添加Helm仓库
sh
[root@node1 ~]# helm repo add bitnami https://charts.bitnami.com/bitnami查找Redis相关Chart
sh
[root@node1 ~]# helm search repo redis
NAME CHART VERSION APP VERSION DESCRIPTION
bitnami/redis 18.1.2 7.2.1 Redis(R) is an open source, advanced key-value ...
bitnami/redis-cluster 9.0.7 7.2.1 Redis(R) is an open source, scalable, distribut...下载部署Redis使用的Chart
sh
[root@node1 redis]# helm fetch bitnami/redis
[root@node1 redis]# ls
redis-18.1.2.tgz
[root@node1 redis]# 解压缩
sh
[root@node1 redis]# tar -xf redis-18.1.2.tgz
[root@node1 redis]# ls
redis redis-18.1.2.tgz
[root@node1 redis]# cd redis
[root@node1 redis]# ls
Chart.lock charts Chart.yaml img README.md templates values.schema.json values.yaml
[root@node1 redis]# 修改values.yaml文件的配置
yaml
global:
imageRegistry: ""
## E.g.
## imagePullSecrets:
## - myRegistryKeySecretName
##
imagePullSecrets: []
storageClass: "rook-ceph-block" # 此处修改为K8s集群上的storageClass名称
redis:
password: "pass_123456" # 连接Redis所使用的密码
sentinel:
## @param sentinel.enabled Use Redis® Sentinel on Redis® pods.
## IMPORTANT: this will disable the master and replicas services and
## create a single Redis® service exposing both the Redis and Sentinel ports
##
enabled: true # 开启sentinel哨兵模式 安装Redis复制集群
sh
[root@node1 redis]# helm install redis . -f values.yaml
NAME: redis
LAST DEPLOYED: Wed Oct 4 21:06:27 2023
NAMESPACE: default
STATUS: deployed
REVISION: 1
TEST SUITE: None
NOTES:
CHART NAME: redis
CHART VERSION: 18.1.2
APP VERSION: 7.2.1
** Please be patient while the chart is being deployed **
Redis® can be accessed via port 6379 on the following DNS name from within your cluster:
redis.default.svc.cluster.local for read only operations
For read/write operations, first access the Redis® Sentinel cluster, which is available in port 26379 using the same domain name above.
To get your password run:
export REDIS_PASSWORD=$(kubectl get secret --namespace default redis -o jsonpath="{.data.redis-password}" | base64 -d)
To connect to your Redis® server:
1. Run a Redis® pod that you can use as a client:
kubectl run --namespace default redis-client --restart='Never' --env REDIS_PASSWORD=$REDIS_PASSWORD --image docker.io/bitnami/redis:7.2.1-debian-11-r0 --command -- sleep infinity
Use the following command to attach to the pod:
kubectl exec --tty -i redis-client \
--namespace default -- bash
2. Connect using the Redis® CLI:
REDISCLI_AUTH="$REDIS_PASSWORD" redis-cli -h redis -p 6379 # Read only operations
REDISCLI_AUTH="$REDIS_PASSWORD" redis-cli -h redis -p 26379 # Sentinel access
To connect to your database from outside the cluster execute the following commands:
kubectl port-forward --namespace default svc/redis 6379:6379 &
REDISCLI_AUTH="$REDIS_PASSWORD" redis-cli -h 127.0.0.1 -p 6379查看Pod部署情况
sh
[root@node1 redis]# kubectl get pods
NAME READY STATUS RESTARTS AGE
redis-node-0 2/2 Running 0 6m15s
redis-node-1 2/2 Running 0 4m58s
redis-node-2 2/2 Running 0 3m9s查看Service
sh
[root@node1 redis]# kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 5d14h
redis ClusterIP 10.96.225.57 <none> 6379/TCP,26379/TCP 8m7s
redis-headless ClusterIP None <none> 6379/TCP,26379/TCP 8m7s连接测试
sh
kubectl run --namespace default redis-client --restart='Never' --env REDIS_PASSWORD=$REDIS_PASSWORD --image docker.io/bitnami/redis:7.2.1-debian-11-r0 --command -- sleep infinity
[root@node1 redis]# kubectl exec --tty -i redis-client \
--namespace default -- bash
I have no name!@redis-client:/$ redis-cli -h redis-node-0.redis-headless.default.svc.cluster.local -p 6379 -a pass_123456
Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.
redis-node-0.redis-headless.default.svc.cluster.local:6379> info replication
# Replication
role:master
connected_slaves:2
slave0:ip=redis-node-1.redis-headless.default.svc.cluster.local,port=6379,state=online,offset=68433,lag=0
slave1:ip=redis-node-2.redis-headless.default.svc.cluster.local,port=6379,state=online,offset=68433,lag=1
master_failover_state:no-failover
master_replid:6010cb66d9586e7518d2ec1572b59e8577373bb2
master_replid2:0000000000000000000000000000000000000000
master_repl_offset:68433
second_repl_offset:-1
repl_backlog_active:1
repl_backlog_size:1048576
repl_backlog_first_byte_offset:1
repl_backlog_histlen:68433
redis-node-0.redis-headless.default.svc.cluster.local:6379> 访问redis-node-0.redis-headless.default.svc.cluster.local即可连接到master
更新集群信息
当修改values.yaml文件后，可以使用如下命令修改部署的集群信息
sh
[root@node1 redis]# helm upgrade -f values.yaml redis .