1）安装operator，生成对应CRD，以及对应CRD Controller Pod
2) 编写 CRD 清单文件，里面定义用户的需求
3）apply CRD 清单文件
Operator 案例
案例: 基于 Operator 实现 Redis 主从复制
#Redis Operator 国内项目
https://github.com/tongdun/td-redis-operator
#著名Redist Operator项目
https://github.com/OT-CONTAINER-KIT/redis-operator/
安装 Operator
wget https://raw.githubusercontent.com/tongdun/td-redisoperator/main/deploy/deploy.yaml
kubectl apply -f deploy.yaml
#查看CRD
root@master1 stateful]# kubectl get crd |grep redis redisclusters.cache.tongdun.net 2026-05-28T15:29:01Z redisstandbies.cache.tongdun.net 2026-05-28T15:29:01Z
[root@master1 stateful]# kubectl api-resources |grep redis redisclusters cache.tongdun.net/v1alpha1 true RedisCluster redisstandbies cache.tongdun.net/v1alpha1 true RedisStandby
#基于Operator安装redis主从和哨兵
wget https://raw.githubusercontent.com/tongdun/td-redisoperator/main/cr/redis_standby.yaml
#创建redis主从资源清单文件
[root@master1 ~]#vim redis_standby.yaml
apiVersion: cache.tongdun.net/v1alpha1 kind: RedisStandby metadata:name: redis-standby-tomnamespace: redis spec:app: standby-tomcapacity: 2048dc: hzenv: demoimage: tongduncloud/redis-standby:1.0monitorimage: tongduncloud/redis-exporter:1.0 #netmode: ClusterIPnetmode: NodePort #修改SVC类型realname: sasecret: "123456" #指定连接密码sentinelimage: tongduncloud/sentinel-standby:lateststorageclass: "sc-nfs" #指定storageclassvip: 172.17.128.8
#参数说明
https://github.com/tongdun/td-redis-operator/wiki/RedisStandby%E4%BA%A4%E4%BB%98%E4%BB%8B%E7%BB%8D
app 关联应用
capacity 容量，单位Mb
dc 机房
env 可选（demo，production）
image Redis镜像
monitorimage exporter镜像
netmode 网络模式，可选（ClusterIP、NodePort）
realname 负责人
secret 密码
sentinelimage 哨兵镜像
storageclass PVC
vip 外部网络访问地址，无实际功能
root@master1 stateful]# cat redis_standby.yaml apiVersion: cache.tongdun.net/v1alpha1 kind: RedisStandby metadata:name: redis-standby-tomnamespace: redis spec:app: standby-tomcapacity: 2048dc: guangzhouenv: demoimage: tongduncloud/redis-standby:1.0monitorimage: tongduncloud/redis-exporter:1.0netmode: NodePortrealname: sasecret: "123456"sentinelimage: tongduncloud/sentinel-standby:lateststorageclass: "sc-nfs"vip: 172.17.128.8
[root@master1 stateful]# kubectl get pod -n redis NAME READY STATUS RESTARTS AGE operator-66c655b5c8-rhrfc 1/1 Running 0 7m51s
kubectl apply -f redis_standby.yaml
创建出来是 redis主从架构带哨兵
一主一从3个哨兵
#查看生成的Pod
kubectl get pod -n redis -o wide
[root@master1 stateful]# kubectl get pod -o wide -n redis NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES operator-66c655b5c8-rhrfc 1/1 Running 0 48m 10.244.1.49 node1.org <none> <none> redis-standby-tom-0 2/2 Running 0 57s 10.244.2.43 node2.org <none> <none> redis-standby-tom-1 1/2 Running 0 36s 10.244.1.55 node1.org <none> <none> sentinel-standby-tom-0 1/1 Running 0 57s 10.244.1.53 node1.org <none> <none> sentinel-standby-tom-1 1/1 Running 0 54s 10.244.2.44 node2.org <none> <none> sentinel-standby-tom-2 1/1 Running 0 52s 10.244.1.54 node1.org <none> <none>
#查看PVC和PV
pvc pv 自动创建 自动绑定
[root@master1 stateful]# kubectl get pvc,pv -n redis NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS VOLUMEATTRIBUTESCLASS AGE persistentvolumeclaim/redis-data-redis-standby-tom-0 Bound pvc-34274930-2b20-4328-8189-b5c2ba2d3a0f 64Gi RWO sc-nfs <unset> 93s persistentvolumeclaim/redis-data-redis-standby-tom-1 Bound pvc-3cf4c53c-0432-4265-bcff-d4c5ea6e7d84 64Gi RWO sc-nfs <unset> 72sNAME CAPACITY ACCESS MODES RECLAIM POLICY STATUS CLAIM STORAGECLASS VOLUMEATTRIBUTESCLASS REASON AGE persistentvolume/pvc-34274930-2b20-4328-8189-b5c2ba2d3a0f 64Gi RWO Delete Bound redis/redis-data-redis-standby-tom-0 sc-nfs <unset> 93s persistentvolume/pvc-3cf4c53c-0432-4265-bcff-d4c5ea6e7d84 64Gi RWO Delete Bound redis/redis-data-redis-standby-tom-1 sc-nfs <unset> 72s
[root@master1 stateful]# ls /data/sc-nfs/ redis-redis-data-redis-standby-tom-0-pvc-34274930-2b20-4328-8189-b5c2ba2d3a0f redis-redis-data-redis-standby-tom-1-pvc-3cf4c53c-0432-4265-bcff-d4c5ea6e7d84 [root@master1 stateful]#
测试功能
#测试主从复制功能
#连接到第一个redis节点
kubectl exec -it -n redis redis-standby-tom-0 -c redis-standby-tom -- sh
[root@master1 stateful]# kubectl exec -it -n redis redis-standby-tom-0 -c redis-standby-tom -- sh sh-4.2# sh-4.2# redis-cli -a 123456 Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe. 127.0.0.1:6379>
查看主从复制信息
127.0.0.1:6379> info replication # Replication role:master connected_slaves:1 slave0:ip=10.244.1.55,port=6379,state=online,offset=44417,lag=0 master_replid:1c60033a39a97d76e4d148b4053f97834cc02082 master_replid2:0000000000000000000000000000000000000000 master_repl_offset:44417 second_repl_offset:-1 repl_backlog_active:1 repl_backlog_size:134217728 repl_backlog_first_byte_offset:1 repl_backlog_histlen:44417
[root@master1 ~]# kubectl get pod -o wide -n redis NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES operator-66c655b5c8-rhrfc 1/1 Running 0 53m 10.244.1.49 node1.org <none> <none> redis-standby-tom-0 2/2 Running 0 5m10s 10.244.2.43 node2.org <none> <none> redis-standby-tom-1 1/2 Running 0 4m49s 10.244.1.55 node1.org <none> <none> sentinel-standby-tom-0 1/1 Running 0 5m10s 10.244.1.53 node1.org <none> <none> sentinel-standby-tom-1 1/1 Running 0 5m7s 10.244.2.44 node2.org <none> <none> sentinel-standby-tom-2 1/1 Running 0 5m5s 10.244.1.54 node1.org <none> <none>
127.0.0.1:6379> role 1) "master" 2) (integer) 72333 3) 1) 1) "10.244.1.55"2) "6379"3) "72333"
写数据
127.0.0.1:6379> 127.0.0.1:6379> set name ming OK 127.0.0.1:6379> get name "ming"
#连接到第二个redis节点
kubectl exec -it -n redis redis-standby-tom-1 -c redis-standby-tom -- sh
root@master1 stateful]# kubectl exec -it -n redis redis-standby-tom-1 -c redis-standby-tom -- sh sh-4.2# redis-cli -a 123456 Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe. 127.0.0.1:6379> 127.0.0.1:6379> role 1) "slave" 2) "10.244.2.43" 3) (integer) 6379 4) "connected" 5) (integer) 92372 127.0.0.1:6379>
127.0.0.1:6379> info replication # Replication role:slave master_host:10.244.2.43 master_port:6379 master_link_status:up master_last_io_seconds_ago:1 master_sync_in_progress:0 slave_repl_offset:101108 slave_priority:100 slave_read_only:0 connected_slaves:0 master_replid:1c60033a39a97d76e4d148b4053f97834cc02082 master_replid2:0000000000000000000000000000000000000000 master_repl_offset:101108 second_repl_offset:-1 repl_backlog_active:1 repl_backlog_size:134217728 repl_backlog_first_byte_offset:1 repl_backlog_histlen:101108
127.0.0.1:6379> get name "ming"