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Вкратце:

Replica — включает в себя Redis Master, который выполняет чтение-запись, и копирует данные на Redis Slaves, которые обслуживает запросы на чтение. При этом слейвы могут заменить мастера, если он упадёт
Cluster — имеет смысл, если у вас данных больше, чем памяти на отдельном сервере. Кластер умеет Sharding, и клиент, запрашивающий определённый ключ, будет направлен на ту ноду, которая этот ключ хранит.

Варианты запуска Redis в Kubernetes

Что надо — это Redis с репликацией.

Как можно реализовать:

ручной сетап —
Redis Operator — redis-operator
Helm чарт с кластером — https://bitnami.com/stack/redis-cluster
Helm чарт с обычной репликацией мастер-слейв — https://bitnami.com/stack/redis

Сначала добавим пользователя gitlab - kubernetes в котором у нас будут храниться конфиги и образа.

заходим под рутом и создаём нового пользователя:

далее надо задать ему пароль

выходим из под рута

авторизуемся под нашим пользователем:

указываем новый пароль

нас выкинуло, пароль успешно задан:

создаём новый проект:

и задаём SSH ключ

генерим ключ если нету:

[root@minikub ~]# ssh-keygen

и добавляем его в гитлаб

[root@minikub ~]# cat /root/.ssh/id_rsa.pub

переходим в наш проект:

копируем URL

и выкачиваем:

[root@minikub ~]# git clone git@192.168.1.190:kubernetes/street-terminal.git

[root@minikub ~]# cd street-terminal/

Создаём namespace :

[root@minikub ~]# kubectl create namespace terminal-soft

Добавляем репозиторий и выкачиваем helm:
helm repo add bitnami https://charts.bitnami.com/bitnami
helm pull bitnami/redis
tar xvfz redis-11.0.6.tgz

выкачиваем образа:
[root@minikub redis]# docker pull bitnami/redis:6.0.8-debian-10-r0
[root@minikub redis]# docker pull bitnami/redis-exporter:1.11.1-debian-10-r12

далее перетегируем их и добавим в наш гитлаб.

[root@minikub redis]# docker tag bitnami/redis:6.0.8-debian-10-r0 192.168.1.190:4567/kubernetes/street-terminal/bitnami/redis:v1

[root@minikub redis]# docker tag bitnami/redis-exporter:1.11.1-debian-10-r12 192.168.1.190:4567/kubernetes/street-terminal/bitnami/redis-exporter:v1

чтобы можно было залить образ в gitlab registry надо добавить insecure

[root@minikub street-terminal]# cat /etc/docker/daemon.json
{ "insecure-registries":["192.168.1.190:4567"] }

[root@minikub street-terminal]# systemctl restart docker

после чего можем логиниться под нашим пользователем kubernetes:

[root@minikub street-terminal]# docker login 192.168.1.190:4567
Username: kubernetes
Password:
WARNING! Your password will be stored unencrypted in /root/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store

и грузим наши образа:

[root@minikub street-terminal]# docker push 192.168.1.190:4567/kubernetes/street-terminal/bitnami/redis:v1

[root@minikub street-terminal]# docker push 192.168.1.190:4567/kubernetes/street-terminal/bitnami/redis-exporter:v1

проверяем:

теперь переходим в нашу папку с redis

[root@minikub street-terminal]# cd redis/

Генерируем пароль с которым будем подключаться:
echo -n "Asergsdg2345KHJ" | base64
Получаем результат:
QXNlcmdzZGcyMzQ1S0hK

Создаём файл с паролем доступа
[root@minikub redis]# cat secret-password.yaml

[codesyntax lang="php"]

apiVersion: v1
kind: Secret
metadata:
  name: secret-redis-terminal-soft
  namespace: terminal-soft
type: Opaque
data:
  redis-password: QXNlcmdzZGcyMzQ1S0hK

apiVersion: v1

kind: Secret

metadata:

name: secret-redis-terminal-soft

namespace: terminal-soft

type: Opaque

data:

redis-password: QXNlcmdzZGcyMzQ1S0hK

[/codesyntax]

Смотрим название сторэдж класса(у нас предварительно поставлен nfs-provisoner):

[root@minikub redis]# kubectl get storageclasses.storage.k8s.io

NAME                  PROVISIONER                RECLAIMPOLICY   VOLUMEBINDINGMODE   ALLOWVOLUMEEXPANSION   AGE
<strong>managed-nfs-storage</strong>   test.ru/nfs                Retain          Immediate           false                  129d
standard (default)    k8s.io/minikube-hostpath   Delete          Immediate           false                  183d

NAME PROVISIONER RECLAIMPOLICY VOLUMEBINDINGMODE ALLOWVOLUMEEXPANSION AGE

managed-nfs-storage test.ru/nfs Retain Immediate false 129d

standard (default) k8s.io/minikube-hostpath Delete Immediate false 183d

Далее делаем бекап

[root@minikub redis]# cp /root/street-terminal/redis/values-production.yaml /root/street-terminal/redis/values-gitlab-production.yaml

Правим в переменных сторедж класс и дисковый объём:

[root@minikub redis]# cat /root/street-terminal/redis/values-gitlab-production.yaml | grep -iE 'storageClass|size' | grep -v '#'
storageClass: managed-nfs-storage
size: 2Gi
size: 2Gi

В этом же файле правим clusterDomain: cluster.local

[root@minikub redis]# cat values-gitlab-production.yaml | grep clusterDomain
clusterDomain: cluster.local

Если в кластере сеть используется FLANEL то отключаем networkPolicy
[root@minikub redis]# cat values-gitlab-production.yaml | grep -A3 networkPolicy
networkPolicy:
## Specifies whether a NetworkPolicy should be created
##
enabled: false

правим имена образов вот с этого:

[codesyntax lang="php"]

[root@minikub redis]# cat /root/street-terminal/redis/values-gitlab-production.yaml |grep -E 'registry|repository|image|tag' | grep -v '#'
image:
  registry: docker.io
  repository: bitnami/redis
  tag: 6.0.8-debian-10-r0
  image:
    registry: docker.io
    repository: bitnami/redis-sentinel
    tag: 6.0.8-debian-10-r1
  image:
    registry: docker.io
    repository: bitnami/redis-exporter
    tag: 1.11.1-debian-10-r12
  image:
    registry: docker.io
    repository: bitnami/minideb
    tag: buster
  registry: docker.io
  repository: bitnami/minideb
  tag: buster

image:

registry: docker.io

repository: bitnami/redis

tag: 6.0.8-debian-10-r0

image:

registry: docker.io

repository: bitnami/redis-sentinel

tag: 6.0.8-debian-10-r1

image:

registry: docker.io

repository: bitnami/redis-exporter

tag: 1.11.1-debian-10-r12

image:

registry: docker.io

repository: bitnami/minideb

tag: buster

registry: docker.io

repository: bitnami/minideb

tag: buster

[/codesyntax]

на это:

[codesyntax lang="php"]

[root@minikub redis]# cat /root/street-terminal/redis/values-gitlab-production.yaml |grep -E 'registry|repository|image|tag' | grep -v '#'
image:
  registry: 192.168.1.190:4567
  repository: kubernetes/street-terminal/bitnami/redis
  tag: v1
  image:
    registry: docker.io
    repository: bitnami/redis-sentinel
    tag: 6.0.8-debian-10-r1
  image:
    registry: 192.168.1.190:4567
    repository: kubernetes/street-terminal/bitnami/redis-exporter
    tag: v1
  image:
    registry: docker.io
    repository: bitnami/minideb
    tag: buster
  registry: docker.io
  repository: bitnami/minideb
  tag: buster

image:

registry: 192.168.1.190:4567

repository: kubernetes/street-terminal/bitnami/redis

tag: v1

image:

registry: docker.io

repository: bitnami/redis-sentinel

tag: 6.0.8-debian-10-r1

image:

registry: 192.168.1.190:4567

repository: kubernetes/street-terminal/bitnami/redis-exporter

tag: v1

image:

registry: docker.io

repository: bitnami/minideb

tag: buster

registry: docker.io

repository: bitnami/minideb

tag: buster

[/codesyntax]

Так же правим
## Use password authentication
usePassword: true
existingSecret: secret-redis-terminal-soft
usePasswordFile: true

[codesyntax lang="php"]

[root@minikub redis]# cat /root/street-terminal/redis/values-gitlab-production.yaml | grep -E 'existingSecret|usePassword|usePasswordFile' | grep -v '#'
  usePassword: true
usePassword: true
existingSecret: secret-redis-terminal-soft
usePasswordFile: true

[root@minikub redis]# cat /root/street-terminal/redis/values-gitlab-production.yaml | grep -E 'existingSecret|usePassword|usePasswordFile' | grep -v '#'

usePassword: true

existingSecret: secret-redis-terminal-soft

usePasswordFile: true

[/codesyntax]

полностью файл выглядит следующим образом:

[root@minikub redis]# cat /root/street-terminal/redis/values-gitlab-production.yaml

[codesyntax lang="php"]

## Global Docker image parameters
## Please, note that this will override the image parameters, including dependencies, configured to use the global value
## Current available global Docker image parameters: imageRegistry and imagePullSecrets
##
global:
  # imageRegistry: myRegistryName
  # imagePullSecrets:
  #   - myRegistryKeySecretName
  # storageClass: myStorageClass
  redis: {}

## Bitnami Redis image version
## ref: https://hub.docker.com/r/bitnami/redis/tags/
##
image:
  registry: 192.168.1.190:4567
  repository: kubernetes/street-terminal/bitnami/redis
  ## Bitnami Redis image tag
  ## ref: https://github.com/bitnami/bitnami-docker-redis#supported-tags-and-respective-dockerfile-links
  ##
  tag: v1
  ## Specify a imagePullPolicy
  ## Defaults to 'Always' if image tag is 'latest', else set to 'IfNotPresent'
  ## ref: http://kubernetes.io/docs/user-guide/images/#pre-pulling-images
  ##
  pullPolicy: IfNotPresent
  ## Optionally specify an array of imagePullSecrets.
  ## Secrets must be manually created in the namespace.
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
  ##
  # pullSecrets:
  #   - myRegistryKeySecretName

## String to partially override redis.fullname template (will maintain the release name)
##
# nameOverride:

## String to fully override redis.fullname template
##
# fullnameOverride:

## Cluster settings
cluster:
  enabled: true
  slaveCount: 3

## Use redis sentinel in the redis pod. This will disable the master and slave services and
## create one redis service with ports to the sentinel and the redis instances
sentinel:
  enabled: false
  ## Require password authentication on the sentinel itself
  ## ref: https://redis.io/topics/sentinel
  usePassword: true
  ## Bitnami Redis Sentintel image version
  ## ref: https://hub.docker.com/r/bitnami/redis-sentinel/tags/
  ##
  image:
    registry: docker.io
    repository: bitnami/redis-sentinel
    ## Bitnami Redis image tag
    ## ref: https://github.com/bitnami/bitnami-docker-redis-sentinel#supported-tags-and-respective-dockerfile-links
    ##
    tag: 6.0.8-debian-10-r1
    ## Specify a imagePullPolicy
    ## Defaults to 'Always' if image tag is 'latest', else set to 'IfNotPresent'
    ## ref: http://kubernetes.io/docs/user-guide/images/#pre-pulling-images
    ##
    pullPolicy: IfNotPresent
    ## Optionally specify an array of imagePullSecrets.
    ## Secrets must be manually created in the namespace.
    ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
    ##
    # pullSecrets:
    #   - myRegistryKeySecretName
  masterSet: mymaster
  initialCheckTimeout: 5
  quorum: 2
  downAfterMilliseconds: 60000
  failoverTimeout: 18000
  parallelSyncs: 1
  port: 26379
  ## Additional Redis configuration for the sentinel nodes
  ## ref: https://redis.io/topics/config
  ##
  configmap:
  ## Enable or disable static sentinel IDs for each replicas
  ## If disabled each sentinel will generate a random id at startup
  ## If enabled, each replicas will have a constant ID on each start-up
  ##
  staticID: false
  ## Configure extra options for Redis Sentinel liveness and readiness probes
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-probes/#configure-probes)
  ##
  livenessProbe:
    enabled: true
    initialDelaySeconds: 5
    periodSeconds: 5
    timeoutSeconds: 5
    successThreshold: 1
    failureThreshold: 5
  readinessProbe:
    enabled: true
    initialDelaySeconds: 5
    periodSeconds: 5
    timeoutSeconds: 1
    successThreshold: 1
    failureThreshold: 5
  customLivenessProbe: {}
  customReadinessProbe: {}
  ## Redis Sentinel resource requests and limits
  ## ref: http://kubernetes.io/docs/user-guide/compute-resources/
  # resources:
  #   requests:
  #     memory: 256Mi
  #     cpu: 100m
  ## Redis Sentinel Service properties
  service:
    ##  Redis Sentinel Service type
    type: ClusterIP
    sentinelPort: 26379
    redisPort: 6379

    ## Specify the nodePort value for the LoadBalancer and NodePort service types.
    ## ref: https://kubernetes.io/docs/concepts/services-networking/service/#type-nodeport
    ##
    # sentinelNodePort:
    # redisNodePort:

    ## Provide any additional annotations which may be required. This can be used to
    ## set the LoadBalancer service type to internal only.
    ## ref: https://kubernetes.io/docs/concepts/services-networking/service/#internal-load-balancer
    ##
    annotations: {}
    labels: {}
    loadBalancerIP:

## Specifies the Kubernetes Cluster's Domain Name.
##
clusterDomain: cluster.local

networkPolicy:
  ## Specifies whether a NetworkPolicy should be created
  ##
  enabled: false

  ## The Policy model to apply. When set to false, only pods with the correct
  ## client label will have network access to the port Redis is listening
  ## on. When true, Redis will accept connections from any source
  ## (with the correct destination port).
  ##
  # allowExternal: true

  ## Allow connections from other namespaces. Just set label for namespace and set label for pods (optional).
  ##
  ingressNSMatchLabels: {}
  ingressNSPodMatchLabels: {}

serviceAccount:
  ## Specifies whether a ServiceAccount should be created
  ##
  create: false
  ## The name of the ServiceAccount to use.
  ## If not set and create is true, a name is generated using the fullname template
  name:

rbac:
  ## Specifies whether RBAC resources should be created
  ##
  create: false

  role:
    ## Rules to create. It follows the role specification
    # rules:
    #  - apiGroups:
    #    - extensions
    #    resources:
    #      - podsecuritypolicies
    #    verbs:
    #      - use
    #    resourceNames:
    #      - gce.unprivileged
    rules: []

## Redis pod Security Context
securityContext:
  enabled: true
  fsGroup: 1001
  runAsUser: 1001
  ## sysctl settings for master and slave pods
  ##
  ## Uncomment the setting below to increase the net.core.somaxconn value
  ##
  # sysctls:
  # - name: net.core.somaxconn
  #   value: "10000"

## Use password authentication
usePassword: true
## Redis password (both master and slave)
## Defaults to a random 10-character alphanumeric string if not set and usePassword is true
## ref: https://github.com/bitnami/bitnami-docker-redis#setting-the-server-password-on-first-run
##
password:
## Use existing secret (ignores previous password)
existingSecret: secret-redis-terminal-soft
## Password key to be retrieved from Redis secret
##
# existingSecretPasswordKey:

## Mount secrets as files instead of environment variables
usePasswordFile: true

## Persist data to a persistent volume (Redis Master)
persistence:
  ## A manually managed Persistent Volume and Claim
  ## Requires persistence.enabled: true
  ## If defined, PVC must be created manually before volume will be bound
  existingClaim:

# Redis port
redisPort: 6379

##
## TLS configuration
##
tls:
  # Enable TLS traffic
  enabled: false
  #
  # Whether to require clients to authenticate or not.
  authClients: true
  #
  # Name of the Secret that contains the certificates
  certificatesSecret:
  #
  # Certificate filename
  certFilename:
  #
  # Certificate Key filename
  certKeyFilename:
  #
  # CA Certificate filename
  certCAFilename:
  #
  # File containing DH params (in order to support DH based ciphers)
  # dhParamsFilename:

##
## Redis Master parameters
##
master:
  ## Redis command arguments
  ##
  ## Can be used to specify command line arguments, for example:
  ## Note `exec` is prepended to command
  ##
  command: "/run.sh"
  ## Additional commands to run prior to starting Redis
  ##
  preExecCmds: ""
  ## Additional Redis configuration for the master nodes
  ## ref: https://redis.io/topics/config
  ##
  configmap:
  ## Redis additional command line flags
  ##
  ## Can be used to specify command line flags, for example:
  ## extraFlags:
  ##  - "--maxmemory-policy volatile-ttl"
  ##  - "--repl-backlog-size 1024mb"
  extraFlags: []
  ## Comma-separated list of Redis commands to disable
  ##
  ## Can be used to disable Redis commands for security reasons.
  ## Commands will be completely disabled by renaming each to an empty string.
  ## ref: https://redis.io/topics/security#disabling-of-specific-commands
  ##
  disableCommands:
    - FLUSHDB
    - FLUSHALL

  ## Redis Master additional pod labels and annotations
  ## ref: https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/
  podLabels: {}
  podAnnotations: {}

  ## Redis Master resource requests and limits
  ## ref: http://kubernetes.io/docs/user-guide/compute-resources/
  # resources:
  #   requests:
  #     memory: 256Mi
  #     cpu: 100m
  ## Use an alternate scheduler, e.g. "stork".
  ## ref: https://kubernetes.io/docs/tasks/administer-cluster/configure-multiple-schedulers/
  ##
  # schedulerName:

  # Enable shared process namespace in a pod.
  # If set to false (default), each container will run in separate namespace, redis will have PID=1.
  # If set to true, the /pause will run as init process and will reap any zombie PIDs,
  # for example, generated by a custom exec probe running longer than a probe timeoutSeconds.
  # Enable this only if customLivenessProbe or customReadinessProbe is used and zombie PIDs are accumulating.
  # Ref: https://kubernetes.io/docs/tasks/configure-pod-container/share-process-namespace/
  shareProcessNamespace: false
  ## Configure extra options for Redis Master liveness and readiness probes
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-probes/#configure-probes)
  ##
  livenessProbe:
    enabled: true
    initialDelaySeconds: 5
    periodSeconds: 5
    timeoutSeconds: 5
    successThreshold: 1
    failureThreshold: 5
  readinessProbe:
    enabled: true
    initialDelaySeconds: 5
    periodSeconds: 5
    timeoutSeconds: 1
    successThreshold: 1
    failureThreshold: 5

  ## Configure custom probes for images other images like
  ## rhscl/redis-32-rhel7 rhscl/redis-5-rhel7
  ## Only used if readinessProbe.enabled: false / livenessProbe.enabled: false
  ##
  # customLivenessProbe:
  #  tcpSocket:
  #    port: 6379
  #  initialDelaySeconds: 10
  #  periodSeconds: 5
  # customReadinessProbe:
  #  initialDelaySeconds: 30
  #  periodSeconds: 10
  #  timeoutSeconds: 5
  #  exec:
  #    command:
  #    - "container-entrypoint"
  #    - "bash"
  #    - "-c"
  #    - "redis-cli set liveness-probe \"`date`\" | grep OK"
  customLivenessProbe: {}
  customReadinessProbe: {}

  ## Redis Master Node selectors and tolerations for pod assignment
  ## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#nodeselector
  ## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#taints-and-tolerations-beta-feature
  ##
  # nodeSelector: {"beta.kubernetes.io/arch": "amd64"}
  # tolerations: []
  ## Redis Master pod/node affinity/anti-affinity
  ##
  affinity: {}

  ## Redis Master Service properties
  service:
    ##  Redis Master Service type
    type: ClusterIP
    port: 6379

    ## Specify the nodePort value for the LoadBalancer and NodePort service types.
    ## ref: https://kubernetes.io/docs/concepts/services-networking/service/#type-nodeport
    ##
    # nodePort:

    ## Provide any additional annotations which may be required. This can be used to
    ## set the LoadBalancer service type to internal only.
    ## ref: https://kubernetes.io/docs/concepts/services-networking/service/#internal-load-balancer
    ##
    annotations: {}
    labels: {}
    loadBalancerIP:
    # loadBalancerSourceRanges: ["10.0.0.0/8"]

  ## Enable persistence using Persistent Volume Claims
  ## ref: http://kubernetes.io/docs/user-guide/persistent-volumes/
  ##
  persistence:
    enabled: true
    ## The path the volume will be mounted at, useful when using different
    ## Redis images.
    path: /data
    ## The subdirectory of the volume to mount to, useful in dev environments
    ## and one PV for multiple services.
    subPath: ""
    ## redis data Persistent Volume Storage Class
    ## If defined, storageClassName: &lt;storageClass&gt;
    ## If set to "-", storageClassName: "", which disables dynamic provisioning
    ## If undefined (the default) or set to null, no storageClassName spec is
    ##   set, choosing the default provisioner.  (gp2 on AWS, standard on
    ##   GKE, AWS &amp; OpenStack)
    ##
    storageClass: managed-nfs-storage
    accessModes:
      - ReadWriteOnce
    size: 2Gi
    ## Persistent Volume selectors
    ## https://kubernetes.io/docs/concepts/storage/persistent-volumes/#selector
    matchLabels: {}
    matchExpressions: {}

  ## Update strategy, can be set to RollingUpdate or onDelete by default.
  ## https://kubernetes.io/docs/tutorials/stateful-application/basic-stateful-set/#updating-statefulsets
  statefulset:
    updateStrategy: RollingUpdate
    ## Partition update strategy
    ## https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/#partitions
    # rollingUpdatePartition:

  ## Redis Master pod priorityClassName
  ##
  priorityClassName: {}

  ## An array to add extra env vars
  ## For example:
  ## extraEnvVars:
  ##  - name: name
  ##    value: value
  ##  - name: other_name
  ##    valueFrom:
  ##      fieldRef:
  ##        fieldPath: fieldPath
  ##
  extraEnvVars: []

  ## ConfigMap with extra env vars:
  ##
  extraEnvVarsCM: []

  ## Secret with extra env vars:
  ##
  extraEnvVarsSecret: []

##
## Redis Slave properties
## Note: service.type is a mandatory parameter
## The rest of the parameters are either optional or, if undefined, will inherit those declared in Redis Master
##
slave:
  ## Slave Service properties
  service:
    ## Redis Slave Service type
    type: ClusterIP
    ## Redis port
    port: 6379
    ## Specify the nodePort value for the LoadBalancer and NodePort service types.
    ## ref: https://kubernetes.io/docs/concepts/services-networking/service/#type-nodeport
    ##
    # nodePort:

    ## Provide any additional annotations which may be required. This can be used to
    ## set the LoadBalancer service type to internal only.
    ## ref: https://kubernetes.io/docs/concepts/services-networking/service/#internal-load-balancer
    ##
    annotations: {}
    labels: {}
    loadBalancerIP:
    # loadBalancerSourceRanges: ["10.0.0.0/8"]

  ## Redis slave port
  port: 6379
  ## Can be used to specify command line arguments, for example:
  ## Note `exec` is prepended to command
  ##
  command: "/run.sh"
  ## Additional commands to run prior to starting Redis
  ##
  preExecCmds: ""
  ## Additional Redis configuration for the slave nodes
  ## ref: https://redis.io/topics/config
  ##
  configmap:
  ## Redis extra flags
  extraFlags: []
  ## List of Redis commands to disable
  disableCommands:
    - FLUSHDB
    - FLUSHALL

  ## Redis Slave pod/node affinity/anti-affinity
  ##
  affinity: {}

  ## Kubernetes Spread Constraints for pod assignment
  ## ref: https://kubernetes.io/docs/concepts/workloads/pods/pod-topology-spread-constraints/
  ##
  # - maxSkew: 1
  #   topologyKey: node
  #   whenUnsatisfiable: DoNotSchedule
  spreadConstraints: {}

  # Enable shared process namespace in a pod.
  # If set to false (default), each container will run in separate namespace, redis will have PID=1.
  # If set to true, the /pause will run as init process and will reap any zombie PIDs,
  # for example, generated by a custom exec probe running longer than a probe timeoutSeconds.
  # Enable this only if customLivenessProbe or customReadinessProbe is used and zombie PIDs are accumulating.
  # Ref: https://kubernetes.io/docs/tasks/configure-pod-container/share-process-namespace/
  shareProcessNamespace: false
  ## Configure extra options for Redis Slave liveness and readiness probes
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-probes/#configure-probes)
  ##
  livenessProbe:
    enabled: true
    initialDelaySeconds: 30
    periodSeconds: 10
    timeoutSeconds: 5
    successThreshold: 1
    failureThreshold: 5
  readinessProbe:
    enabled: true
    initialDelaySeconds: 5
    periodSeconds: 10
    timeoutSeconds: 10
    successThreshold: 1
    failureThreshold: 5

  ## Configure custom probes for images other images like
  ## rhscl/redis-32-rhel7 rhscl/redis-5-rhel7
  ## Only used if readinessProbe.enabled: false / livenessProbe.enabled: false
  ##
  # customLivenessProbe:
  #  tcpSocket:
  #    port: 6379
  #  initialDelaySeconds: 10
  #  periodSeconds: 5
  # customReadinessProbe:
  #  initialDelaySeconds: 30
  #  periodSeconds: 10
  #  timeoutSeconds: 5
  #  exec:
  #    command:
  #    - "container-entrypoint"
  #    - "bash"
  #    - "-c"
  #    - "redis-cli set liveness-probe \"`date`\" | grep OK"
  customLivenessProbe: {}
  customReadinessProbe: {}

  ## Redis slave Resource
  # resources:
  #   requests:
  #     memory: 256Mi
  #     cpu: 100m

  ## Redis slave selectors and tolerations for pod assignment
  # nodeSelector: {"beta.kubernetes.io/arch": "amd64"}
  # tolerations: []

  ## Use an alternate scheduler, e.g. "stork".
  ## ref: https://kubernetes.io/docs/tasks/administer-cluster/configure-multiple-schedulers/
  ##
  # schedulerName:

  ## Redis slave pod Annotation and Labels
  podLabels: {}
  podAnnotations: {}

  ## Redis slave pod priorityClassName
  # priorityClassName: {}

  ## Enable persistence using Persistent Volume Claims
  ## ref: http://kubernetes.io/docs/user-guide/persistent-volumes/
  ##
  persistence:
    enabled: true
    ## The path the volume will be mounted at, useful when using different
    ## Redis images.
    path: /data
    ## The subdirectory of the volume to mount to, useful in dev environments
    ## and one PV for multiple services.
    subPath: ""
    ## redis data Persistent Volume Storage Class
    ## If defined, storageClassName: &lt;storageClass&gt;
    ## If set to "-", storageClassName: "", which disables dynamic provisioning
    ## If undefined (the default) or set to null, no storageClassName spec is
    ##   set, choosing the default provisioner.  (gp2 on AWS, standard on
    ##   GKE, AWS &amp; OpenStack)
    ##
    storageClass: managed-nfs-storage
    accessModes:
      - ReadWriteOnce
    size: 2Gi
    ## Persistent Volume selectors
    ## https://kubernetes.io/docs/concepts/storage/persistent-volumes/#selector
    matchLabels: {}
    matchExpressions: {}

  ## Update strategy, can be set to RollingUpdate or onDelete by default.
  ## https://kubernetes.io/docs/tutorials/stateful-application/basic-stateful-set/#updating-statefulsets
  statefulset:
    updateStrategy: RollingUpdate
    ## Partition update strategy
    ## https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/#partitions
    # rollingUpdatePartition:

  ## An array to add extra env vars
  ## For example:
  ## extraEnvVars:
  ##  - name: name
  ##    value: value
  ##  - name: other_name
  ##    valueFrom:
  ##      fieldRef:
  ##        fieldPath: fieldPath
  ##
  extraEnvVars: []

  ## ConfigMap with extra env vars:
  ##
  extraEnvVarsCM: []

  ## Secret with extra env vars:
  ##
  extraEnvVarsSecret: []

## Prometheus Exporter / Metrics
##
metrics:
  enabled: true

  image:
    registry: 192.168.1.190:4567
    repository: kubernetes/street-terminal/bitnami/redis-exporter
    tag: v1
    pullPolicy: IfNotPresent
    ## Optionally specify an array of imagePullSecrets.
    ## Secrets must be manually created in the namespace.
    ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
    ##
    # pullSecrets:
    #   - myRegistryKeySecretName

  ## Metrics exporter resource requests and limits
  ## ref: http://kubernetes.io/docs/user-guide/compute-resources/
  ##
  # resources: {}

  ## Extra arguments for Metrics exporter, for example:
  ## extraArgs:
  ##   check-keys: myKey,myOtherKey
  # extraArgs: {}

  ## Metrics exporter pod Annotation and Labels
  podAnnotations:
    prometheus.io/scrape: "true"
    prometheus.io/port: "9121"
  # podLabels: {}

  # Enable this if you're using https://github.com/coreos/prometheus-operator
  serviceMonitor:
    enabled: false
    ## Specify a namespace if needed
    # namespace: monitoring
    # fallback to the prometheus default unless specified
    # interval: 10s
    ## Defaults to what's used if you follow CoreOS [Prometheus Install Instructions](https://github.com/bitnami/charts/tree/master/bitnami/prometheus-operator#tldr)
    ## [Prometheus Selector Label](https://github.com/bitnami/charts/tree/master/bitnami/prometheus-operator#prometheus-operator-1)
    ## [Kube Prometheus Selector Label](https://github.com/bitnami/charts/tree/master/bitnami/prometheus-operator#exporters)
    selector:
      prometheus: kube-prometheus

  ## Custom PrometheusRule to be defined
  ## The value is evaluated as a template, so, for example, the value can depend on .Release or .Chart
  ## ref: https://github.com/coreos/prometheus-operator#customresourcedefinitions
  prometheusRule:
    enabled: false
    additionalLabels: {}
    namespace: ""
    ## Redis prometheus rules
    ## These are just examples rules, please adapt them to your needs.
    ## Make sure to constraint the rules to the current redis service.
    # rules:
    #   - alert: RedisDown
    #     expr: redis_up{service="{{ template "redis.fullname" . }}-metrics"} == 0
    #     for: 2m
    #     labels:
    #       severity: error
    #     annotations:
    #       summary: Redis instance {{ "{{ $labels.instance }}" }} down
    #       description: Redis instance {{ "{{ $labels.instance }}" }} is down
    #    - alert: RedisMemoryHigh
    #      expr: &gt;
    #        redis_memory_used_bytes{service="{{ template "redis.fullname" . }}-metrics"} * 100
    #        /
    #        redis_memory_max_bytes{service="{{ template "redis.fullname" . }}-metrics"}
    #        &gt; 90 =&lt; 100
    #      for: 2m
    #      labels:
    #        severity: error
    #      annotations:
    #        summary: Redis instance {{ "{{ $labels.instance }}" }} is using too much memory
    #        description: |
    #          Redis instance {{ "{{ $labels.instance }}" }} is using {{ "{{ $value }}" }}% of its available memory.
    #    - alert: RedisKeyEviction
    #      expr: |
    #        increase(redis_evicted_keys_total{service="{{ template "redis.fullname" . }}-metrics"}[5m]) &gt; 0
    #      for: 1s
    #      labels:
    #        severity: error
    #      annotations:
    #        summary: Redis instance {{ "{{ $labels.instance }}" }} has evicted keys
    #        description: |
    #          Redis instance {{ "{{ $labels.instance }}" }} has evicted {{ "{{ $value }}" }} keys in the last 5 minutes.
    rules: []

  ## Metrics exporter pod priorityClassName
  # priorityClassName: {}
  service:
    type: ClusterIP
    ## Use serviceLoadBalancerIP to request a specific static IP,
    ## otherwise leave blank
    # loadBalancerIP:
    annotations: {}
    labels: {}

##
## Init containers parameters:
## volumePermissions: Change the owner of the persist volume mountpoint to RunAsUser:fsGroup
##
volumePermissions:
  enabled: false
  image:
    registry: docker.io
    repository: bitnami/minideb
    tag: buster
    pullPolicy: Always
    ## Optionally specify an array of imagePullSecrets.
    ## Secrets must be manually created in the namespace.
    ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
    ##
    # pullSecrets:
    #   - myRegistryKeySecretName
  resources: {}
  # resources:
  #   requests:
  #     memory: 128Mi
  #     cpu: 100m

## Redis config file
## ref: https://redis.io/topics/config
##
configmap: |-
  # Enable AOF https://redis.io/topics/persistence#append-only-file
  appendonly yes
  # Disable RDB persistence, AOF persistence already enabled.
  save ""

## Sysctl InitContainer
## used to perform sysctl operation to modify Kernel settings (needed sometimes to avoid warnings)
sysctlImage:
  enabled: false
  command: []
  registry: docker.io
  repository: bitnami/minideb
  tag: buster
  pullPolicy: Always
  ## Optionally specify an array of imagePullSecrets.
  ## Secrets must be manually created in the namespace.
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
  ##
  # pullSecrets:
  #   - myRegistryKeySecretName
  mountHostSys: false
  resources: {}
  # resources:
  #   requests:
  #     memory: 128Mi
  #     cpu: 100m

## PodSecurityPolicy configuration
## ref: https://kubernetes.io/docs/concepts/policy/pod-security-policy/
##
podSecurityPolicy:
  ## Specifies whether a PodSecurityPolicy should be created
  ##
  create: false

## Define a disruption budget
## ref: https://kubernetes.io/docs/concepts/workloads/pods/disruptions/
##
podDisruptionBudget:
  enabled: false
  minAvailable: 1
  # maxUnavailable: 1

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## Global Docker image parameters

## Please, note that this will override the image parameters, including dependencies, configured to use the global value

## Current available global Docker image parameters: imageRegistry and imagePullSecrets

global:

# imageRegistry: myRegistryName

# imagePullSecrets:

# - myRegistryKeySecretName

# storageClass: myStorageClass

redis: {}

## Bitnami Redis image version

## ref: https://hub.docker.com/r/bitnami/redis/tags/

image:

registry: 192.168.1.190:4567

repository: kubernetes/street-terminal/bitnami/redis

## Bitnami Redis image tag

## ref: https://github.com/bitnami/bitnami-docker-redis#supported-tags-and-respective-dockerfile-links

tag: v1

## Specify a imagePullPolicy

## Defaults to 'Always' if image tag is 'latest', else set to 'IfNotPresent'

## ref: http://kubernetes.io/docs/user-guide/images/#pre-pulling-images

pullPolicy: IfNotPresent

## Optionally specify an array of imagePullSecrets.

## Secrets must be manually created in the namespace.

## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/

# pullSecrets:

# - myRegistryKeySecretName

## String to partially override redis.fullname template (will maintain the release name)

# nameOverride:

## String to fully override redis.fullname template

# fullnameOverride:

## Cluster settings

cluster:

enabled: true

slaveCount: 3

## Use redis sentinel in the redis pod. This will disable the master and slave services and

## create one redis service with ports to the sentinel and the redis instances

sentinel:

enabled: false

## Require password authentication on the sentinel itself

## ref: https://redis.io/topics/sentinel

usePassword: true

## Bitnami Redis Sentintel image version

## ref: https://hub.docker.com/r/bitnami/redis-sentinel/tags/

image:

registry: docker.io

repository: bitnami/redis-sentinel

## Bitnami Redis image tag

## ref: https://github.com/bitnami/bitnami-docker-redis-sentinel#supported-tags-and-respective-dockerfile-links

tag: 6.0.8-debian-10-r1

## Specify a imagePullPolicy

## Defaults to 'Always' if image tag is 'latest', else set to 'IfNotPresent'

## ref: http://kubernetes.io/docs/user-guide/images/#pre-pulling-images

pullPolicy: IfNotPresent

## Optionally specify an array of imagePullSecrets.

## Secrets must be manually created in the namespace.

## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/

# pullSecrets:

# - myRegistryKeySecretName

masterSet: mymaster

initialCheckTimeout: 5

quorum: 2

downAfterMilliseconds: 60000

failoverTimeout: 18000

parallelSyncs: 1

port: 26379

## Additional Redis configuration for the sentinel nodes

## ref: https://redis.io/topics/config

configmap:

## Enable or disable static sentinel IDs for each replicas

## If disabled each sentinel will generate a random id at startup

## If enabled, each replicas will have a constant ID on each start-up

staticID: false

## Configure extra options for Redis Sentinel liveness and readiness probes

## ref: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-probes/#configure-probes)

livenessProbe:

enabled: true

initialDelaySeconds: 5

periodSeconds: 5

timeoutSeconds: 5

successThreshold: 1

failureThreshold: 5

readinessProbe:

enabled: true

initialDelaySeconds: 5

periodSeconds: 5

timeoutSeconds: 1

successThreshold: 1

failureThreshold: 5

customLivenessProbe: {}

customReadinessProbe: {}

## Redis Sentinel resource requests and limits

## ref: http://kubernetes.io/docs/user-guide/compute-resources/

# resources:

# requests:

# memory: 256Mi

# cpu: 100m

## Redis Sentinel Service properties

service:

## Redis Sentinel Service type

type: ClusterIP

sentinelPort: 26379

redisPort: 6379

## Specify the nodePort value for the LoadBalancer and NodePort service types.

## ref: https://kubernetes.io/docs/concepts/services-networking/service/#type-nodeport

# sentinelNodePort:

# redisNodePort:

## Provide any additional annotations which may be required. This can be used to

## set the LoadBalancer service type to internal only.

## ref: https://kubernetes.io/docs/concepts/services-networking/service/#internal-load-balancer

annotations: {}

labels: {}

loadBalancerIP:

## Specifies the Kubernetes Cluster's Domain Name.

clusterDomain: cluster.local

networkPolicy:

## Specifies whether a NetworkPolicy should be created

enabled: false

## The Policy model to apply. When set to false, only pods with the correct

## client label will have network access to the port Redis is listening

## on. When true, Redis will accept connections from any source

## (with the correct destination port).

# allowExternal: true

## Allow connections from other namespaces. Just set label for namespace and set label for pods (optional).

ingressNSMatchLabels: {}

ingressNSPodMatchLabels: {}

serviceAccount:

## Specifies whether a ServiceAccount should be created

create: false

## The name of the ServiceAccount to use.

## If not set and create is true, a name is generated using the fullname template

name:

rbac:

## Specifies whether RBAC resources should be created

create: false

role:

## Rules to create. It follows the role specification

# rules:

# - apiGroups:

# - extensions

# resources:

# - podsecuritypolicies

# verbs:

# - use

# resourceNames:

# - gce.unprivileged

rules: []

## Redis pod Security Context

securityContext:

enabled: true

fsGroup: 1001

runAsUser: 1001

## sysctl settings for master and slave pods

## Uncomment the setting below to increase the net.core.somaxconn value

# sysctls:

# - name: net.core.somaxconn

# value: "10000"

## Use password authentication

usePassword: true

## Redis password (both master and slave)

## Defaults to a random 10-character alphanumeric string if not set and usePassword is true

## ref: https://github.com/bitnami/bitnami-docker-redis#setting-the-server-password-on-first-run

password:

## Use existing secret (ignores previous password)

existingSecret: secret-redis-terminal-soft

## Password key to be retrieved from Redis secret

# existingSecretPasswordKey:

## Mount secrets as files instead of environment variables

usePasswordFile: true

## Persist data to a persistent volume (Redis Master)

persistence:

## A manually managed Persistent Volume and Claim

## Requires persistence.enabled: true

## If defined, PVC must be created manually before volume will be bound

existingClaim:

# Redis port

redisPort: 6379

## TLS configuration

tls:

# Enable TLS traffic

enabled: false

# Whether to require clients to authenticate or not.

authClients: true

# Name of the Secret that contains the certificates

certificatesSecret:

# Certificate filename

certFilename:

# Certificate Key filename

certKeyFilename:

# CA Certificate filename

certCAFilename:

# File containing DH params (in order to support DH based ciphers)

# dhParamsFilename:

## Redis Master parameters

master:

## Redis command arguments

## Can be used to specify command line arguments, for example:

## Note `exec` is prepended to command

command: "/run.sh"

## Additional commands to run prior to starting Redis

preExecCmds: ""

## Additional Redis configuration for the master nodes

## ref: https://redis.io/topics/config

configmap:

## Redis additional command line flags

## Can be used to specify command line flags, for example:

## extraFlags:

## - "--maxmemory-policy volatile-ttl"

## - "--repl-backlog-size 1024mb"

extraFlags: []

## Comma-separated list of Redis commands to disable

## Can be used to disable Redis commands for security reasons.

## Commands will be completely disabled by renaming each to an empty string.

## ref: https://redis.io/topics/security#disabling-of-specific-commands

disableCommands:

- FLUSHDB

- FLUSHALL

## Redis Master additional pod labels and annotations

## ref: https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/

podLabels: {}

podAnnotations: {}

## Redis Master resource requests and limits

## ref: http://kubernetes.io/docs/user-guide/compute-resources/

# resources:

# requests:

# memory: 256Mi

# cpu: 100m

## Use an alternate scheduler, e.g. "stork".

## ref: https://kubernetes.io/docs/tasks/administer-cluster/configure-multiple-schedulers/

# schedulerName:

# Enable shared process namespace in a pod.

# If set to false (default), each container will run in separate namespace, redis will have PID=1.

# If set to true, the /pause will run as init process and will reap any zombie PIDs,

# for example, generated by a custom exec probe running longer than a probe timeoutSeconds.

# Enable this only if customLivenessProbe or customReadinessProbe is used and zombie PIDs are accumulating.

# Ref: https://kubernetes.io/docs/tasks/configure-pod-container/share-process-namespace/

shareProcessNamespace: false

## Configure extra options for Redis Master liveness and readiness probes

## ref: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-probes/#configure-probes)

livenessProbe:

enabled: true

initialDelaySeconds: 5

periodSeconds: 5

timeoutSeconds: 5

successThreshold: 1

failureThreshold: 5

readinessProbe:

enabled: true

initialDelaySeconds: 5

periodSeconds: 5

timeoutSeconds: 1

successThreshold: 1

failureThreshold: 5

## Configure custom probes for images other images like

## rhscl/redis-32-rhel7 rhscl/redis-5-rhel7

## Only used if readinessProbe.enabled: false / livenessProbe.enabled: false

# customLivenessProbe:

# tcpSocket:

# port: 6379

# initialDelaySeconds: 10

# periodSeconds: 5

# customReadinessProbe:

# initialDelaySeconds: 30

# periodSeconds: 10

# timeoutSeconds: 5

# exec:

# command:

# - "container-entrypoint"

# - "bash"

# - "-c"

# - "redis-cli set liveness-probe \"`date`\" | grep OK"

customLivenessProbe: {}

customReadinessProbe: {}

## Redis Master Node selectors and tolerations for pod assignment

## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#nodeselector

## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#taints-and-tolerations-beta-feature

# nodeSelector: {"beta.kubernetes.io/arch": "amd64"}

# tolerations: []

## Redis Master pod/node affinity/anti-affinity

affinity: {}

## Redis Master Service properties

service:

## Redis Master Service type

type: ClusterIP

port: 6379

## Specify the nodePort value for the LoadBalancer and NodePort service types.

## ref: https://kubernetes.io/docs/concepts/services-networking/service/#type-nodeport

# nodePort:

## Provide any additional annotations which may be required. This can be used to

## set the LoadBalancer service type to internal only.

## ref: https://kubernetes.io/docs/concepts/services-networking/service/#internal-load-balancer

annotations: {}

labels: {}

loadBalancerIP:

# loadBalancerSourceRanges: ["10.0.0.0/8"]

## Enable persistence using Persistent Volume Claims

## ref: http://kubernetes.io/docs/user-guide/persistent-volumes/

persistence:

enabled: true

## The path the volume will be mounted at, useful when using different

## Redis images.

path: /data

## The subdirectory of the volume to mount to, useful in dev environments

## and one PV for multiple services.

subPath: ""

## redis data Persistent Volume Storage Class

## If defined, storageClassName: <storageClass>

## If set to "-", storageClassName: "", which disables dynamic provisioning

## If undefined (the default) or set to null, no storageClassName spec is

## set, choosing the default provisioner. (gp2 on AWS, standard on

## GKE, AWS & OpenStack)

storageClass: managed-nfs-storage

accessModes:

- ReadWriteOnce

size: 2Gi

## Persistent Volume selectors

## https://kubernetes.io/docs/concepts/storage/persistent-volumes/#selector

matchLabels: {}

matchExpressions: {}

## Update strategy, can be set to RollingUpdate or onDelete by default.

## https://kubernetes.io/docs/tutorials/stateful-application/basic-stateful-set/#updating-statefulsets

statefulset:

updateStrategy: RollingUpdate

## Partition update strategy

## https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/#partitions

# rollingUpdatePartition:

## Redis Master pod priorityClassName

priorityClassName: {}

## An array to add extra env vars

## For example:

## extraEnvVars:

## - name: name

## value: value

## - name: other_name

## valueFrom:

## fieldRef:

## fieldPath: fieldPath

extraEnvVars: []

## ConfigMap with extra env vars:

extraEnvVarsCM: []

## Secret with extra env vars:

extraEnvVarsSecret: []

## Redis Slave properties

## Note: service.type is a mandatory parameter

## The rest of the parameters are either optional or, if undefined, will inherit those declared in Redis Master

slave:

## Slave Service properties

service:

## Redis Slave Service type

type: ClusterIP

## Redis port

port: 6379

## Specify the nodePort value for the LoadBalancer and NodePort service types.

## ref: https://kubernetes.io/docs/concepts/services-networking/service/#type-nodeport

# nodePort:

## Provide any additional annotations which may be required. This can be used to

## set the LoadBalancer service type to internal only.

## ref: https://kubernetes.io/docs/concepts/services-networking/service/#internal-load-balancer

annotations: {}

labels: {}

loadBalancerIP:

# loadBalancerSourceRanges: ["10.0.0.0/8"]

## Redis slave port

port: 6379

## Can be used to specify command line arguments, for example:

## Note `exec` is prepended to command

command: "/run.sh"

## Additional commands to run prior to starting Redis

preExecCmds: ""

## Additional Redis configuration for the slave nodes

## ref: https://redis.io/topics/config

configmap:

## Redis extra flags

extraFlags: []

## List of Redis commands to disable

disableCommands:

- FLUSHDB

- FLUSHALL

## Redis Slave pod/node affinity/anti-affinity

affinity: {}

## Kubernetes Spread Constraints for pod assignment

## ref: https://kubernetes.io/docs/concepts/workloads/pods/pod-topology-spread-constraints/

# - maxSkew: 1

# topologyKey: node

# whenUnsatisfiable: DoNotSchedule

spreadConstraints: {}

# Enable shared process namespace in a pod.

# If set to false (default), each container will run in separate namespace, redis will have PID=1.

# If set to true, the /pause will run as init process and will reap any zombie PIDs,

# for example, generated by a custom exec probe running longer than a probe timeoutSeconds.

# Enable this only if customLivenessProbe or customReadinessProbe is used and zombie PIDs are accumulating.

# Ref: https://kubernetes.io/docs/tasks/configure-pod-container/share-process-namespace/

shareProcessNamespace: false

## Configure extra options for Redis Slave liveness and readiness probes

## ref: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-probes/#configure-probes)

livenessProbe:

enabled: true

initialDelaySeconds: 30

periodSeconds: 10

timeoutSeconds: 5

successThreshold: 1

failureThreshold: 5

readinessProbe:

enabled: true

initialDelaySeconds: 5

periodSeconds: 10

timeoutSeconds: 10

successThreshold: 1

failureThreshold: 5

## Configure custom probes for images other images like

## rhscl/redis-32-rhel7 rhscl/redis-5-rhel7

## Only used if readinessProbe.enabled: false / livenessProbe.enabled: false

# customLivenessProbe:

# tcpSocket:

# port: 6379

# initialDelaySeconds: 10

# periodSeconds: 5

# customReadinessProbe:

# initialDelaySeconds: 30

# periodSeconds: 10

# timeoutSeconds: 5

# exec:

# command:

# - "container-entrypoint"

# - "bash"

# - "-c"

# - "redis-cli set liveness-probe \"`date`\" | grep OK"

customLivenessProbe: {}

customReadinessProbe: {}

## Redis slave Resource

# resources:

# requests:

# memory: 256Mi

# cpu: 100m

## Redis slave selectors and tolerations for pod assignment

# nodeSelector: {"beta.kubernetes.io/arch": "amd64"}

# tolerations: []

## Use an alternate scheduler, e.g. "stork".

## ref: https://kubernetes.io/docs/tasks/administer-cluster/configure-multiple-schedulers/

# schedulerName:

## Redis slave pod Annotation and Labels

podLabels: {}

podAnnotations: {}

## Redis slave pod priorityClassName

# priorityClassName: {}

## Enable persistence using Persistent Volume Claims

## ref: http://kubernetes.io/docs/user-guide/persistent-volumes/

persistence:

enabled: true

## The path the volume will be mounted at, useful when using different

## Redis images.

path: /data

## The subdirectory of the volume to mount to, useful in dev environments

## and one PV for multiple services.

subPath: ""

## redis data Persistent Volume Storage Class

## If defined, storageClassName: <storageClass>

## If set to "-", storageClassName: "", which disables dynamic provisioning

## If undefined (the default) or set to null, no storageClassName spec is

## set, choosing the default provisioner. (gp2 on AWS, standard on

## GKE, AWS & OpenStack)

storageClass: managed-nfs-storage

accessModes:

- ReadWriteOnce

size: 2Gi

## Persistent Volume selectors

## https://kubernetes.io/docs/concepts/storage/persistent-volumes/#selector

matchLabels: {}

matchExpressions: {}

## Update strategy, can be set to RollingUpdate or onDelete by default.

## https://kubernetes.io/docs/tutorials/stateful-application/basic-stateful-set/#updating-statefulsets

statefulset:

updateStrategy: RollingUpdate

## Partition update strategy

## https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/#partitions

# rollingUpdatePartition:

## An array to add extra env vars

## For example:

## extraEnvVars:

## - name: name

## value: value

## - name: other_name

## valueFrom:

## fieldRef:

## fieldPath: fieldPath

extraEnvVars: []

## ConfigMap with extra env vars:

extraEnvVarsCM: []

## Secret with extra env vars:

extraEnvVarsSecret: []

## Prometheus Exporter / Metrics

metrics:

enabled: true

image:

registry: 192.168.1.190:4567

repository: kubernetes/street-terminal/bitnami/redis-exporter

tag: v1

pullPolicy: IfNotPresent

## Optionally specify an array of imagePullSecrets.

## Secrets must be manually created in the namespace.

## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/

# pullSecrets:

# - myRegistryKeySecretName

## Metrics exporter resource requests and limits

## ref: http://kubernetes.io/docs/user-guide/compute-resources/

# resources: {}

## Extra arguments for Metrics exporter, for example:

## extraArgs:

## check-keys: myKey,myOtherKey

# extraArgs: {}

## Metrics exporter pod Annotation and Labels

podAnnotations:

prometheus.io/scrape: "true"

prometheus.io/port: "9121"

# podLabels: {}

# Enable this if you're using https://github.com/coreos/prometheus-operator

serviceMonitor:

enabled: false

## Specify a namespace if needed

# namespace: monitoring

# fallback to the prometheus default unless specified

# interval: 10s

## Defaults to what's used if you follow CoreOS [Prometheus Install Instructions](https://github.com/bitnami/charts/tree/master/bitnami/prometheus-operator#tldr)

## [Prometheus Selector Label](https://github.com/bitnami/charts/tree/master/bitnami/prometheus-operator#prometheus-operator-1)

## [Kube Prometheus Selector Label](https://github.com/bitnami/charts/tree/master/bitnami/prometheus-operator#exporters)

selector:

prometheus: kube-prometheus

## Custom PrometheusRule to be defined

## The value is evaluated as a template, so, for example, the value can depend on .Release or .Chart

## ref: https://github.com/coreos/prometheus-operator#customresourcedefinitions

prometheusRule:

enabled: false

additionalLabels: {}

namespace: ""

## Redis prometheus rules

## These are just examples rules, please adapt them to your needs.

## Make sure to constraint the rules to the current redis service.

# rules:

# - alert: RedisDown

# expr: redis_up{service="{{ template "redis.fullname" . }}-metrics"} == 0

# for: 2m

# labels:

# severity: error

# annotations:

# summary: Redis instance {{ "{{ $labels.instance }}" }} down

# description: Redis instance {{ "{{ $labels.instance }}" }} is down

# - alert: RedisMemoryHigh

# expr: >

# redis_memory_used_bytes{service="{{ template "redis.fullname" . }}-metrics"} * 100

# /

# redis_memory_max_bytes{service="{{ template "redis.fullname" . }}-metrics"}

# > 90 =< 100

# for: 2m

# labels:

# severity: error

# annotations:

# summary: Redis instance {{ "{{ $labels.instance }}" }} is using too much memory

# description: |

# Redis instance {{ "{{ $labels.instance }}" }} is using {{ "{{ $value }}" }}% of its available memory.

# - alert: RedisKeyEviction

# expr: |

# increase(redis_evicted_keys_total{service="{{ template "redis.fullname" . }}-metrics"}[5m]) > 0

# for: 1s

# labels:

# severity: error

# annotations:

# summary: Redis instance {{ "{{ $labels.instance }}" }} has evicted keys

# description: |

# Redis instance {{ "{{ $labels.instance }}" }} has evicted {{ "{{ $value }}" }} keys in the last 5 minutes.

rules: []

## Metrics exporter pod priorityClassName

# priorityClassName: {}

service:

type: ClusterIP

## Use serviceLoadBalancerIP to request a specific static IP,

## otherwise leave blank

# loadBalancerIP:

annotations: {}

labels: {}

## Init containers parameters:

## volumePermissions: Change the owner of the persist volume mountpoint to RunAsUser:fsGroup

volumePermissions:

enabled: false

image:

registry: docker.io

repository: bitnami/minideb

tag: buster

pullPolicy: Always

## Optionally specify an array of imagePullSecrets.

## Secrets must be manually created in the namespace.

## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/

# pullSecrets:

# - myRegistryKeySecretName

resources: {}

# resources:

# requests:

# memory: 128Mi

# cpu: 100m

## Redis config file

## ref: https://redis.io/topics/config

configmap: |-

# Enable AOF https://redis.io/topics/persistence#append-only-file

appendonly yes

# Disable RDB persistence, AOF persistence already enabled.

save ""

## Sysctl InitContainer

## used to perform sysctl operation to modify Kernel settings (needed sometimes to avoid warnings)

sysctlImage:

enabled: false

command: []

registry: docker.io

repository: bitnami/minideb

tag: buster

pullPolicy: Always

## Optionally specify an array of imagePullSecrets.

## Secrets must be manually created in the namespace.

## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/

# pullSecrets:

# - myRegistryKeySecretName

mountHostSys: false

resources: {}

# resources:

# requests:

# memory: 128Mi

# cpu: 100m

## PodSecurityPolicy configuration

## ref: https://kubernetes.io/docs/concepts/policy/pod-security-policy/

podSecurityPolicy:

## Specifies whether a PodSecurityPolicy should be created

create: false

## Define a disruption budget

## ref: https://kubernetes.io/docs/concepts/workloads/pods/disruptions/

podDisruptionBudget:

enabled: false

minAvailable: 1

# maxUnavailable: 1

[/codesyntax]

Теперь можно запускать:

[root@minikub redis]# kubectl apply -f secret-password.yaml

kubectl apply -f secret-password.yaml
helm install redis-terminal-soft --namespace terminal-soft /root/git/developer-projects/street-terminal/redis/ --values /root/git/developer-projects/street-terminal/redis/values-gitlab-production.yaml

Проверяем

[root@minikub redis]# <strong>kubectl get service -n terminal-soft</strong>
NAME                           TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)    AGE
redis-terminal-soft-headless   ClusterIP   None            &lt;none&gt;        6379/TCP   59m
redis-terminal-soft-master     ClusterIP   10.111.36.163   &lt;none&gt;        6379/TCP   59m
redis-terminal-soft-metrics    ClusterIP   10.110.216.48   &lt;none&gt;        9121/TCP   59m
redis-terminal-soft-slave      ClusterIP   10.101.32.49    &lt;none&gt;        6379/TCP   59m

[root@minikub redis]# kubectl get service -n terminal-soft

NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE

redis-terminal-soft-headless ClusterIP None <none> 6379/TCP 59m

redis-terminal-soft-master ClusterIP 10.111.36.163 <none> 6379/TCP 59m

redis-terminal-soft-metrics ClusterIP 10.110.216.48 <none> 9121/TCP 59m

redis-terminal-soft-slave ClusterIP 10.101.32.49 <none> 6379/TCP 59m

[root@minikub redis]# <strong>kubectl get pod -n terminal-soft</strong>
NAME                           READY   STATUS    RESTARTS   AGE
redis-terminal-soft-master-0   2/2     Running   0          60m
redis-terminal-soft-slave-0    2/2     Running   0          60m
redis-terminal-soft-slave-1    2/2     Running   0          59m
redis-terminal-soft-slave-2    2/2     Running   0          59m

[root@minikub redis]# kubectl get pod -n terminal-soft

NAME READY STATUS RESTARTS AGE

redis-terminal-soft-master-0 2/2 Running 0 60m

redis-terminal-soft-slave-0 2/2 Running 0 60m

redis-terminal-soft-slave-1 2/2 Running 0 59m

redis-terminal-soft-slave-2 2/2 Running 0 59m

[root@minikub redis]# <strong>kubectl get pv -n terminal-soft</strong>
NAME                                       CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS   CLAIM                                                   STORAGECLASS          REASON   AGE
pvc-2fdb53a6-5546-4f05-a425-7c9d3cda47bb   2Gi        RWO            Retain           Bound    terminal-soft/redis-data-redis-terminal-soft-master-0   managed-nfs-storage            121m
pvc-5c1bf476-1c7e-4924-8da3-2d19225ca46e   2Gi        RWO            Retain           Bound    terminal-soft/redis-data-redis-terminal-soft-slave-2    managed-nfs-storage            60m
pvc-648b7c49-2242-4497-860e-323e60425892   2Gi        RWO            Retain           Bound    terminal-soft/redis-data-redis-terminal-soft-slave-1    managed-nfs-storage            60m
pvc-ec4e6051-b364-42e1-a7fe-97d7242ade5d   2Gi        RWO            Retain           Bound    terminal-soft/redis-data-redis-terminal-soft-slave-0    managed-nfs-storage            121m

[root@minikub redis]# kubectl get pv -n terminal-soft

NAME CAPACITY ACCESS MODES RECLAIM POLICY STATUS CLAIM STORAGECLASS REASON AGE

pvc-2fdb53a6-5546-4f05-a425-7c9d3cda47bb 2Gi RWO Retain Bound terminal-soft/redis-data-redis-terminal-soft-master-0 managed-nfs-storage 121m

pvc-5c1bf476-1c7e-4924-8da3-2d19225ca46e 2Gi RWO Retain Bound terminal-soft/redis-data-redis-terminal-soft-slave-2 managed-nfs-storage 60m

pvc-648b7c49-2242-4497-860e-323e60425892 2Gi RWO Retain Bound terminal-soft/redis-data-redis-terminal-soft-slave-1 managed-nfs-storage 60m

pvc-ec4e6051-b364-42e1-a7fe-97d7242ade5d 2Gi RWO Retain Bound terminal-soft/redis-data-redis-terminal-soft-slave-0 managed-nfs-storage 121m

(на более старых версиях кубера можно использовать команду:
kubectl run client --image=airdock/redis-client -i --tty --rm -n terminal-soft /bin/bash)

мы же запускаем:

[root@minikub redis]# kubectl run --generator=run-pod/v1 -i --tty load-generator --image=airdock/redis-client -i --rm -n terminal-soft /bin/bash

проверяем подключение с неверным паролем:

root@load-generator:~#  <strong>redis-cli -a Asergsdg2345K -h redis-terminal-soft-master -p 6379 ping</strong>
(error) NOAUTH Authentication required.

1 2	root@load-generator:~# <strong>redis-cli -a Asergsdg2345K -h redis-terminal-soft-master -p 6379 ping</strong> (error) NOAUTH Authentication required.

проверяем подключение с верным паролем:

root@load-generator:~# <strong>redis-cli -a Asergsdg2345KHJ -h redis-terminal-soft-master -p 6379 ping</strong>
PONG

1 2	root@load-generator:~# <strong>redis-cli -a Asergsdg2345KHJ -h redis-terminal-soft-master -p 6379 ping</strong> PONG

как видим пришёл ответ PONG значит redis корректно запустился

если не удаётся удалить подвисшие PV можно использовать:

kubectl get pv | tail -n+2 | awk '{print $1}' | xargs -I{} kubectl patch pv {} -p '{"metadata":{"finalizers": null}}'

теперь можно грузить наш проект в gitlab:

[root@minikub street-terminal]# git config --global user.email "example@test.ru"
[root@minikub street-terminal]# git config --global user.name "testru"
[root@minikub street-terminal]# git add .
[root@minikub street-terminal]# git commit -m "first commit"
[root@minikub street-terminal]# git push -u origin master

как видим проект появился:

Centos

Kubernetes - запуск redis

Варианты запуска Redis в Kubernetes

https://github.com/midnight47/

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