redis cluster 动态加入节点

短命女 2022-09-25 13:28 161阅读 0赞

承接上次的cluster实验，这次我想加入7007 master和7008 slave两个节点

./redis-trib.rb add-node 1.1.1.2:7007 1.1.1.2:7001
    
    /usr/local/redis3.0/src/redis-trib.rb reshard 1.1.1.2:7001
    
    根据提示选择all，把其他节点的数据，自动分配一部分到7007上
    >>> Performing Cluster Check (using node 1.1.1.2:7007)
    M: ca0d0138034ce8ce211282dca20a114e4f701430 1.1.1.2:7007
       slots:0-1665,5461-7127,10923-12588 (4999 slots) master
       0 additional replica(s)
    S: 70c02ebfe21fd9de0fe47b0fce4887657babbe21 1.1.1.2:7005
       slots: (0 slots) slave
       replicates 9ce1d76fe3fac744466088050e227859d88875cd
    M: 9ce1d76fe3fac744466088050e227859d88875cd 1.1.1.2:7002
       slots:7128-10922 (3795 slots) master
       1 additional replica(s)
    M: fdf06f99b9ae32fbbddc8b3e196659487dfccf6f 1.1.1.2:7003
       slots:12589-16383 (3795 slots) master
       1 additional replica(s)
    M: c71b628db058d5b7907c91491aa33ed16a76ad66 1.1.1.2:7001
       slots:1666-5460 (3795 slots) master
       1 additional replica(s)
    M: 13a8fcc39ab3b6dc569de343ed63ac20c7906986 1.1.1.2:7008
       slots: (0 slots) master
       0 additional replica(s)
    S: eb0b49e4de19a9af2bf672d579e71e98c5169c7a 1.1.1.2:7006
       slots: (0 slots) slave
       replicates fdf06f99b9ae32fbbddc8b3e196659487dfccf6f
    S: 70670e2a0c7f212306582836b4acf58aae9897f0 1.1.1.2:7004
       slots: (0 slots) slave
       replicates c71b628db058d5b7907c91491aa33ed16a76ad66
    [OK] All nodes agree about slots configuration.
    >>> Check for open slots...
    >>> Check slots coverage...
    [OK] All 16384 slots covered.
    How many slots do you want to move (from 1 to 16384)?

#把7008节点加入到集群，后面只要指定任意一个master节点即可
    ./redis-trib.rb add-node 1.1.1.2:7008 1.1.1.2:7001
    
    #查询7007节点的id
    
    1.1.1.2:7007> CLUSTER nodes
    70c02ebfe21fd9de0fe47b0fce4887657babbe21 1.1.1.2:7005 slave 9ce1d76fe3fac744466088050e227859d88875cd 0 1473583844350 2 connected
    ca0d0138034ce8ce211282dca20a114e4f701430 1.1.1.2:7007 myself,master - 0 0 7 connected 0-1665 5461-7127 10923-12588
    9ce1d76fe3fac744466088050e227859d88875cd 1.1.1.2:7002 master - 0 1473583843337 2 connected 7128-10922
    fdf06f99b9ae32fbbddc8b3e196659487dfccf6f 1.1.1.2:7003 master - 0 1473583843845 3 connected 12589-16383
    c71b628db058d5b7907c91491aa33ed16a76ad66 1.1.1.2:7001 master - 0 1473583842329 1 connected 1666-5460
    13a8fcc39ab3b6dc569de343ed63ac20c7906986 1.1.1.2:7008 master - 0 1473583844855 0 connected
    eb0b49e4de19a9af2bf672d579e71e98c5169c7a 1.1.1.2:7006 slave fdf06f99b9ae32fbbddc8b3e196659487dfccf6f 0 1473583845359 3 connected
    70670e2a0c7f212306582836b4acf58aae9897f0 1.1.1.2:7004 slave c71b628db058d5b7907c91491aa33ed16a76ad66 0 1473583842834 1 connected
    
    
    
    #指定7008工作为slave模式，指定他的master是7007，注意这一步是在7008上操作的！！！
    127.0.0.1:7008> cluster replicate ca0d0138034ce8ce211282dca20a114e4f701430
    OK
    
    #查看cluter状态，验证是否成功，7008为slave
    
    127.0.0.1:7008> cluster nodes
    70670e2a0c7f212306582836b4acf58aae9897f0 1.1.1.2:7004 slave c71b628db058d5b7907c91491aa33ed16a76ad66 0 1473584538734 1 connected
    eb0b49e4de19a9af2bf672d579e71e98c5169c7a 1.1.1.2:7006 slave fdf06f99b9ae32fbbddc8b3e196659487dfccf6f 0 1473584532610 3 connected
    c71b628db058d5b7907c91491aa33ed16a76ad66 1.1.1.2:7001 master - 0 1473584535680 1 connected 1666-5460
    9ce1d76fe3fac744466088050e227859d88875cd 1.1.1.2:7002 master - 0 1473584533638 2 connected 7128-10922
    13a8fcc39ab3b6dc569de343ed63ac20c7906986 1.1.1.2:7008 myself,slave ca0d0138034ce8ce211282dca20a114e4f701430 0 0 0 connected
    70c02ebfe21fd9de0fe47b0fce4887657babbe21 1.1.1.2:7005 slave 9ce1d76fe3fac744466088050e227859d88875cd 0 1473584534658 2 connected
    fdf06f99b9ae32fbbddc8b3e196659487dfccf6f 1.1.1.2:7003 master - 0 1473584537726 3 connected 12589-16383
    ca0d0138034ce8ce211282dca20a114e4f701430 1.1.1.2:7007 master - 0 1473584536710 7 connected 0-1665 5461-7127 10923-12588
    127.0.0.1:7008>