Redis cluster日常管理【二】

前面在Redis集群架构搭建详解博文中搭建了一个redis集群，这篇博文就是在那个redis集群基础上进行操作的。

一、添加新节点

在10.220.5.172上在新配置两个实例

①新增配置

# cd /redis/
# mkdir 6379 6380
# cp 26379/redis-26379.conf  6379/redis-6379.conf  && sed -i "s/26379/6379/g" 6379/redis-6379.conf
# cp 26380/redis-26380.conf  6380/redis-6380.conf  && sed -i "s/26380/6380/g" 6380/redis-6380.conf

②启动

# /root/redis-4.0.11/src/redis-server /redis/6380/redis-6380.conf
# /root/redis-4.0.11/src/redis-server /redis/6379/redis-6379.conf

③查看是否启动成功

# ss -tnl
State      Recv-Q Send-Q        Local Address:Port                       Peer Address:Port
LISTEN     0      128            10.220.5.172:16380                                 *:*
LISTEN     0      128            10.220.5.172:36380                                 *:*
LISTEN     0      128            10.220.5.172:6379                                  *:*
LISTEN     0      128            10.220.5.172:26379                                 *:*
LISTEN     0      128            10.220.5.172:6380                                  *:*
LISTEN     0      128            10.220.5.172:26380                                 *:*
LISTEN     0      128                       *:22                                    *:*
LISTEN     0      100               127.0.0.1:25                                    *:*
LISTEN     0      128            10.220.5.172:16379                                 *:*
LISTEN     0      128            10.220.5.172:36379                                 *:*
LISTEN     0      128                      :::22                                   :::*
LISTEN     0      100                     ::1:25                                   :::*

添加主节点

① 在10.220.5.173节点执行如下命令

# /root/redis-4.0.11/src/redis-trib.rb add-node 10.220.5.172:6379 10.220.5.171:16379说明：10.220.5.172:6379是新增节点，后面的可以是集群中任意一个旧节点>>> Adding node 10.220.5.172:6379 to cluster 10.220.5.171:16379
>>> Performing Cluster Check (using node 10.220.5.171:16379)
M: 56d2348f3eb66f669405b8064fb8c068cca94105 10.220.5.171:16379slots:0-5460 (5461 slots) master1 additional replica(s)
M: 93a37f72f33752779183d70835a101c086bbad01 10.220.5.172:26379slots:5461-10922 (5462 slots) master1 additional replica(s)
S: 2c978644384445bf1bdfd3ed2b585f949f574f63 10.220.5.172:26380slots: (0 slots) slavereplicates 56d2348f3eb66f669405b8064fb8c068cca94105
S: 8540a124e3a876ad2357d6bd10e09091612b3291 10.220.5.173:36380slots: (0 slots) slavereplicates 93a37f72f33752779183d70835a101c086bbad01
S: 35c6cc6fb84b3c1a76e4f225bb8477f519abb559 10.220.5.171:16380slots: (0 slots) slavereplicates 66d902b3ad7b4342720f5aeb98dfffa2b9c013fc
M: 66d902b3ad7b4342720f5aeb98dfffa2b9c013fc 10.220.5.173:36379slots:10923-16383 (5461 slots) master1 additional replica(s)
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.
>>> Send CLUSTER MEET to node 10.220.5.172:6379 to make it join the cluster.
[OK] New node added correctly.

②检查一下是否加入成功

#  redis-4.0.11/src/redis-trib.rb  check 10.220.5.172:26379
>>> Performing Cluster Check (using node 10.220.5.172:26379)
M: 93a37f72f33752779183d70835a101c086bbad01 10.220.5.172:26379slots:5461-10922 (5462 slots) master1 additional replica(s)
S: 8540a124e3a876ad2357d6bd10e09091612b3291 10.220.5.173:36380slots: (0 slots) slavereplicates 93a37f72f33752779183d70835a101c086bbad01
S: 2c978644384445bf1bdfd3ed2b585f949f574f63 10.220.5.172:26380slots: (0 slots) slavereplicates 56d2348f3eb66f669405b8064fb8c068cca94105
M: f523db5333150607a347fa9e55a282bcbe67b5aa 10.220.5.172:6379slots: (0 slots) master0 additional replica(s)
M: 66d902b3ad7b4342720f5aeb98dfffa2b9c013fc 10.220.5.173:36379slots:10923-16383 (5461 slots) master1 additional replica(s)
M: 56d2348f3eb66f669405b8064fb8c068cca94105 10.220.5.171:16379slots:0-5460 (5461 slots) master1 additional replica(s)
S: 35c6cc6fb84b3c1a76e4f225bb8477f519abb559 10.220.5.171:16380slots: (0 slots) slavereplicates 66d902b3ad7b4342720f5aeb98dfffa2b9c013fc
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.
可以看到10.220.5.172:6379已经加入到了集群中并且还是主节点其id为：f523db5333150607a347fa9e55a282bcbe67b5aa

添加从节点

①在10.220.5.173节点执行如下命令

# /root/redis-4.0.11/src/redis-trib.rb  add-node --slave --master-id f523db5333150607a347fa9e55a282bcbe67b5aa 10.220.5.172:6380 10.220.5.171:16380说明：--slave，表示添加的是从节点
--master-id，后面跟的是主节点的node-d这里是签名上一步添加的那个6379的node id
10.220.5.172:6380，是即将添加入集群的节点，最后面的是原集群的任意一个节点即可>>> Adding node 10.220.5.172:6380 to cluster 10.220.5.171:16380
>>> Performing Cluster Check (using node 10.220.5.171:16380)
S: 35c6cc6fb84b3c1a76e4f225bb8477f519abb559 10.220.5.171:16380slots: (0 slots) slavereplicates 66d902b3ad7b4342720f5aeb98dfffa2b9c013fc
M: 93a37f72f33752779183d70835a101c086bbad01 10.220.5.172:26379slots:5461-10922 (5462 slots) master1 additional replica(s)
S: 8540a124e3a876ad2357d6bd10e09091612b3291 10.220.5.173:36380slots: (0 slots) slavereplicates 93a37f72f33752779183d70835a101c086bbad01
S: 2c978644384445bf1bdfd3ed2b585f949f574f63 10.220.5.172:26380slots: (0 slots) slavereplicates 56d2348f3eb66f669405b8064fb8c068cca94105
M: 56d2348f3eb66f669405b8064fb8c068cca94105 10.220.5.171:16379slots:0-5460 (5461 slots) master1 additional replica(s)
M: 66d902b3ad7b4342720f5aeb98dfffa2b9c013fc 10.220.5.173:36379slots:10923-16383 (5461 slots) master1 additional replica(s)
M: f523db5333150607a347fa9e55a282bcbe67b5aa 10.220.5.172:6379slots: (0 slots) master0 additional replica(s)
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.
>>> Send CLUSTER MEET to node 10.220.5.172:6380 to make it join the cluster.
Waiting for the cluster to join.......
>>> Configure node as replica of 10.220.5.172:6379.
[OK] New node added correctly.

重新分配slot

新增加的节点是没有slots的M: f523db5333150607a347fa9e55a282bcbe67b5aa 10.220.5.172:6379 slots: (0 slots) master主节点没有slots存取数据的时候就不会被选中，为其分配slots的方式有两种：

所有节点的slots收回重新分配
从某个节点抽取部分slots分配给新节点

①在10.220.5.173节点执行下面命令

# /root/redis-4.0.11/src/redis-trib.rb reshard 10.220.5.172:6379
How many slots do you want to move (from 1 to 16384)? 1000  >>>设置slot个数
What is the receiving node ID?  f523db5333150607a347fa9e55a282bcbe67b5aa  >>>新节点的node  id 这里就是那个新添加的10.220.5.172:6379的node id
Source node #1:all >>>表示全部节点重新分配槽，此处输入某节点的node id的话表示从某个节点抽取slots分配给新节点
Do you want to proceed with the proposed reshard plan (yes/no)? yes  >>>确认重新分配

查看一下集群的状态

 redis-4.0.11/src/redis-trib.rb  check 10.220.5.172:26379
>>> Performing Cluster Check (using node 10.220.5.172:26379)
M: 93a37f72f33752779183d70835a101c086bbad01 10.220.5.172:26379slots:6129-10922 (4794 slots) master1 additional replica(s)
S: 76b5218ca0729fbe305c65a8a4aefae4462a58fc 10.220.5.172:6380slots: (0 slots) slavereplicates f523db5333150607a347fa9e55a282bcbe67b5aa
S: 8540a124e3a876ad2357d6bd10e09091612b3291 10.220.5.173:36380slots: (0 slots) slavereplicates 93a37f72f33752779183d70835a101c086bbad01
S: 2c978644384445bf1bdfd3ed2b585f949f574f63 10.220.5.172:26380slots: (0 slots) slavereplicates 56d2348f3eb66f669405b8064fb8c068cca94105
M: f523db5333150607a347fa9e55a282bcbe67b5aa 10.220.5.172:6379slots:0-665,5461-6128,10923-11588 (2000 slots) master1 additional replica(s)可以看到我们新加入的节点已经被分配了slots，我这里为了演示第四步做了两次所以我这里是有2000个slotsM: 66d902b3ad7b4342720f5aeb98dfffa2b9c013fc 10.220.5.173:36379slots:11589-16383 (4795 slots) master1 additional replica(s)
M: 56d2348f3eb66f669405b8064fb8c068cca94105 10.220.5.171:16379slots:666-5460 (4795 slots) master1 additional replica(s)
S: 35c6cc6fb84b3c1a76e4f225bb8477f519abb559 10.220.5.171:16380slots: (0 slots) slavereplicates 66d902b3ad7b4342720f5aeb98dfffa2b9c013fc
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.

二、删除节点

删除从节点，10.220.5.172:6380

# /root/redis-4.0.11/src/redis-trib.rb del-node 10.220.5.171:16379 76b5218ca0729fbe305c65a8a4aefae4462a58fc说明：
10.220.5.171:16379，集群入口76b5218ca0729fbe305c65a8a4aefae4462a58fc，要删除的10.220.5.176:6380节点的node id>>> Removing node 76b5218ca0729fbe305c65a8a4aefae4462a58fc from cluster 10.220.5.172:6380
>>> Sending CLUSTER FORGET messages to the cluster...
>>> SHUTDOWN the node.

删除主节点,10.220.5.172:6379
如果主节点有从节点，将从节点转移到其他主节点，如果主节点有slot，去掉分配的slot然后再删除主节点

# /root/redis-4.0.11/src/redis-trib.rb reshard 10.220.5.172:6379
How many slots do you want to move (from 1 to 16384)? 1000  >>>这里写被删除的master的全部slot数量
What is the receiving node ID? 56d2348f3eb66f669405b8064fb8c068cca94105  >>>接收被删除节点的slot的master的node id
Source node #1:f523db5333150607a347fa9e55a282bcbe67b5aa >>>被删除的master的node-id
Source node #2:done
Do you want to proceed with the proposed reshard plan (yes/no)? yes  >>>是否希望取消slot以后，reshard#删除节点
# /root/redis-4.0.11/src/redis-trib.rb del-node 10.220.5.171:16379 f523db5333150607a347fa9e55a282bcbe67b5aa
>>> Removing node f523db5333150607a347fa9e55a282bcbe67b5aa from cluster 10.220.5.171:16379
>>> Sending CLUSTER FORGET messages to the cluster...
>>> SHUTDOWN the node.

做到这里开篇新添加的一个master和一个slave节点都被删除了，也就是回到这篇博文开始没有添加节点的状态了。

Redis cluster日常管理【二】相关推荐

Redis cluster日常管理【一】
一.管理操作集群 cluster info:打印集群的信息 cluster nodes:列出集群当前已知的所有节点,以及节点的相关信息 cluster meet<ip><port& ...
Redis Cluster日常操作命令梳理
在之前的一篇文章已经介绍了Redis Cluster及其部署,下面说下Redis Cluster日常操作命令: 一.以下命令是Redis Cluster集群所独有的,执行下面命令需要先登录redis: ...
Redis Cluster部署、管理和测试
背景: Redis 3.0之后支持了Cluster,大大增强了Redis水平扩展的能力.Redis Cluster是Redis官方的集群实现方案,在此之前已经有第三方Redis集群解决方案,如Twen ...
redis05_springboot+mybatis整合redis cluster
一.springboot+mybatis整合redis cluster整合流程图二.springboot+mybatis整合redis cluster具体实现 2.1 创建springboot+ ...
StackExchange.Redis 官方文档(二) Configuration
配置有多种方式可以配置redis,StackExchange.Redis提供了一个丰富的配置模型,在执行Connect (or ConnectAsync) 时被调用: var conn = Conn ...
python连接redis集群如何释放内存_python 连接 redis cluster 集群
一. redis集群模式有多种, cluster模式只是其中的一种实现方式, 其原理请自行谷歌或者百度, 这里只举例如何使用Python操作 redis cluster 集群二. python 连接 ...
redis cluster管理工具redis-trib.rb详解
redis cluster管理工具redis-trib.rb详解 redis-trib.rb是redis官方推出的管理redis集群的工具,集成在redis的源码src目录下,是基于redis提供的集 ...
Redis Cluster 集群管理维护
2.5:Redis Cluster 管理维护 2.5.1:动态添加节点增加 Redis Node,需要与之前的 Redis 版本相同.配置一致: 添加一个 Redis Node 需要启动两台 Red ...
vcs oracle 双机,赛门铁克VCS(Veritas Cluster Server)双机日常管理，vcsveritas
赛门铁克VCS(Veritas Cluster Server)双机日常管理,vcsveritas 1. 查看VCS版本及License信息 PSDB01:~ # vxlicrep Symantec L ...

Redis cluster日常管理【二】

一、添加新节点

二、删除节点

Redis cluster日常管理【二】相关推荐

最新文章

热门文章