添加helm仓库
# 添加bitnami仓库
[root@master redis]# helm repo add bitnami https://charts.bitnami.com/bitnami
"bitnami" already exists with the same configuration, skipping
# 查看所有的仓库
[root@master redis]# helm repo list
NAME URL
appscode https://charts.appscode.com/stable/
harbor https://helm.goharbor.io
kvaps https://kvaps.github.io/charts
stable http://mirror.azure.cn/kubernetes/charts/
bitnami https://charts.bitnami.com/bitnami
查找redis Chart
[root@master redis]# helm search repo redis
NAME CHART VERSION APP VERSION DESCRIPTION
appscode/redis-alerts v2023.05.09 v0.2.0 A Helm chart for Redis Alert by AppsCode
bitnami/redis 18.0.4 7.2.1 Redis(R) is an open source, advanced key-value ...
bitnami/redis-cluster 9.0.5 7.2.1 Redis(R) is an open source, scalable, distribut...
stable/prometheus-redis-exporter 3.5.1 1.3.4 DEPRECATED Prometheus exporter for Redis metrics
stable/redis 10.5.7 5.0.7 DEPRECATED Open source, advanced key-value stor...
stable/redis-ha 4.4.6 5.0.6 DEPRECATED - Highly available Kubernetes implem...
stable/sensu 0.2.5 0.28 DEPRECATED Sensu monitoring framework backed by...
下载bitnami的redis Chart包
[root@master redis]# helm fetch bitnami/redis-cluster
[root@master redis]# ls
redis-cluster-9.0.5.tgz
解压缩并进入目录
[root@master redis]# tar -xf redis-cluster-9.0.5.tgz
[root@master redis]# cd redis-cluster/
[root@master redis-cluster]#
修改values.yaml中的一些变量
# 修改下其中的密码和默认的storageclass
global:
imageRegistry: ""
## E.g.
## imagePullSecrets:
## - myRegistryKeySecretName
##
imagePullSecrets: []
storageClass: "rook-ceph-block"
redis:
password: "pass_12345678"
创建命名空间
后面使用helm部署的话将资源都创建在namespace下
[root@master redis-cluster]# kubectl create ns redis
namespace/redis created
使用helm部署redis集群
# -n 指定名称空间
# . 表示使用当前修改后的Chart进行部署
[root@master redis-cluster]# helm install redis-cluster . -n redis
查看部署情况
[root@node1 redis-cluster]# kubectl get pods -n redis -owide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
redis-cluster-0 1/1 Running 1 (39s ago) 109s 10.244.6.3 desktop <none> <none>
redis-cluster-1 1/1 Running 1 (42s ago) 109s 10.244.4.22 node4 <none> <none>
redis-cluster-2 1/1 Running 1 (16s ago) 109s 10.244.5.15 node5 <none> <none>
redis-cluster-3 1/1 Running 2 (7s ago) 109s 10.244.1.78 node2 <none> <none>
redis-cluster-4 1/1 Running 1 (39s ago) 109s 10.244.3.56 node3 <none> <none>
redis-cluster-5 1/1 Running 0 109s 10.244.0.60 node <none> <none>
测试连接
# 查看Service的IP
[root@node1 redis-cluster]# kubectl get service -n redis
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
redis-cluster ClusterIP 10.103.8.250 <none> 6379/TCP 90s
redis-cluster-headless ClusterIP None <none> 6379/TCP,16379/TCP 90s
# 先不用密码连接测试操作失败
[root@node1 ~]# redis-cli -c -h 10.103.8.250
10.110.217.13:6379>
10.110.217.13:6379>
10.110.217.13:6379> info
NOAUTH Authentication required.
10.110.217.13:6379>
# 使用密码登陆，可以获取到集群信息
# -c 参数为开启集群模式
# -h 指定连接哪个redis
# -a 指定密码
[root@node1 ~]# redis-cli -c -h 10.103.8.250 -a pass_12345678
Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.
10.110.217.13:6379> info
# Server
redis_version:7.2.1
redis_git_sha1:00000000
redis_git_dirty:0
redis_build_id:ed7eac84dd41e25a
redis_mode:cluster
os:Linux 5.14.0-284.30.1.el9_2.x86_64 x86_64
arch_bits:64
monotonic_clock:POSIX clock_gettime
multiplexing_api:epoll
atomicvar_api:c11-builtin
gcc_version:10.2.1
process_id:1
更新redis集群的密码
修改values.yaml文件
global:
imageRegistry: ""
## E.g.
## imagePullSecrets:
## - myRegistryKeySecretName
##
imagePullSecrets: []
storageClass: "rook-ceph-block" # 修改为自己服务器上的StorageClass名称
redis:
password: "pass_12345678" # 这里修改为新的密码
更新密码
# 注意修改密码的时候要使用--set password=123456指定以前的密码才能操作成功
# 更新密码过程中会重新创建pod,过程可能会比较慢
helm upgrade redis-cluster bitnami/redis-cluster -f values.yaml -n redis --set password=pass_12345678
测试
# 使用新的密码可以登陆了
[root@node1 ~]# redis-cli -c -h 10.103.8.250 -a new_password
Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.
10.103.8.250:6379> info
# Server
redis_version:7.2.1
redis_git_sha1:00000000
redis_git_dirty:0
redis_build_id:ed7eac84dd41e25a
