REDIS CLUSTER简单安装配置

朱雀 2022-08-22 00:26 139阅读 0赞

1 redis简单的配置文件

[root@192.168.56.159 7007]cat redis.conf 
    daemonize yes
    pidfile /var/run/redis7007.pid
    port 7007
    tcp-backlog 511
    timeout 0
    tcp-keepalive 0
    loglevel notice
    logfile "/tmp/redis7007.log"
    databases 16
    save 900 1
    save 300 10
    save 60 10000
    stop-writes-on-bgsave-error yes
    rdbcompression yes
    rdbchecksum yes
    dbfilename dump7007.rdb
    dir /data/redis/7007/
    slave-serve-stale-data yes
    slave-read-only yes
    repl-diskless-sync no
    repl-diskless-sync-delay 5
    repl-ping-slave-period 10
    repl-timeout 60
    repl-disable-tcp-nodelay no
    slave-priority 100
    #requirepass fangyali
    maxmemory 50000000
    maxmemory-policy volatile-lru
    appendonly yes
    appendfilename "appendonly.aof"
    appendfsync everysec
    no-appendfsync-on-rewrite no
    auto-aof-rewrite-percentage 100
    auto-aof-rewrite-min-size 64mb
    aof-load-truncated yes
    lua-time-limit 5000
    cluster-enabled yes
    cluster-config-file nodes.conf
    cluster-node-timeout 5000
    slowlog-log-slower-than 10000
    slowlog-max-len 128
    latency-monitor-threshold 0
    notify-keyspace-events ""
    hash-max-ziplist-entries 512
    hash-max-ziplist-value 64
    list-max-ziplist-entries 512
    list-max-ziplist-value 64
    set-max-intset-entries 512
    zset-max-ziplist-entries 128
    zset-max-ziplist-value 64
    hll-sparse-max-bytes 3000
    activerehashing yes
    client-output-buffer-limit normal 0 0 0
    client-output-buffer-limit slave 256mb 64mb 60
    client-output-buffer-limit pubsub 32mb 8mb 60
    hz 10
    aof-rewrite-incremental-fsync yes

新建dir目录 /data/redis/7007/    计划端口为7000-7005

把配置文件分别copy到相应目录，注意修改端口

启动redis

redis-server /data/redis/7000/redis.conf 
    redis-server /data/redis/7001/redis.conf 
    redis-server /data/redis/7002/redis.conf 
    redis-server /data/redis/7003/redis.conf 
    redis-server /data/redis/7004/redis.conf 
    redis-server /data/redis/7005/redis.conf

安装ruby

http://www.ruby-lang.org/en/downloads/
    ./configure -prefix=/usr/local/ruby
    make
    make install

安装rubygem

https://rubygems.org/pages/download
    ruby setup.rb

安装gem-redis

https://rubygems.org/gems/redis/versions/3.2.2
    gem install -l /data/soft/redis-3.2.2.gem 
    
    cp /usr/local/redis-3.0.7/src/redis-trib.rb /usr/local/bin/

创建集群

[root@192.168.56.160 soft]redis-trib.rb create --replicas 1 127.0.0.1:7000  127.0.0.1:7001 127.0.0.1:7002 192.168.56.159:7003 192.168.56.159:7004 192.168.56.159:7005
    >>> Creating cluster
    [ERR] Sorry, can't connect to node 127.0.0.1:7000
    配置了密码，取消掉OK

简单操作

新添加主节点
    redis-trib.rb add-node 127.0.0.1:7006 127.0.0.1:7000
    分配slot
    redis-trib.rb reshard 127.0.0.1:7006
    给主节点新加从节点
    redis-trib.rb add-node --slave --master-id 2e30017779471ea0c2609b5badf2733951fb9f46 127.0.0.1:7007 192.168.56.160:7006
    
    查看节点信息
    127.0.0.1:7004> CLUSTER NODES
    68cc9ca44041627308b176841da689b56b599a42 192.168.56.160:7001 master - 0 1462783984818 2 connected 10923-16383
    b0b592510b6140b994c0c4d5a7e0016e75478911 192.168.56.159:7005 slave 68cc9ca44041627308b176841da689b56b599a42 0 1462783984817 6 connected
    8de4c186553cd6cba9ef72ec3549916ce1d5bcd8 192.168.56.159:7007 slave 2e30017779471ea0c2609b5badf2733951fb9f46 0 1462783983810 7 connected
    80655f860c39d2f0f46f29a9d11a6dfac227431c 192.168.56.159:7003 master - 0 1462783985824 4 connected 5512-10922
    2e30017779471ea0c2609b5badf2733951fb9f46 192.168.56.160:7006 master - 0 1462783984314 7 connected 0-48 5461-5511
    72cf83dd2da22e7239075abd75fcc713492187e7 192.168.56.160:7002 slave 80655f860c39d2f0f46f29a9d11a6dfac227431c 0 1462783983811 4 connected
    097c31f3d8c283e327a975889630fc79c7376352 192.168.56.159:7004 myself,slave 9995d337a11da3487a393c546d6547c5a3229d39 0 0 5 connected
    9995d337a11da3487a393c546d6547c5a3229d39 192.168.56.160:7000 master - 0 1462783983811 1 connected 49-5460
    kill 主节点7006后，7007提升为主节点
    127.0.0.1:7004> CLUSTER NODES
    68cc9ca44041627308b176841da689b56b599a42 192.168.56.160:7001 master - 0 1462784014543 2 connected 10923-16383
    8de4c186553cd6cba9ef72ec3549916ce1d5bcd8 192.168.56.159:7007 master - 0 1462784016056 8 connected 0-48 5461-5511
    097c31f3d8c283e327a975889630fc79c7376352 192.168.56.159:7004 myself,slave 9995d337a11da3487a393c546d6547c5a3229d39 0 0 5 connected
    b0b592510b6140b994c0c4d5a7e0016e75478911 192.168.56.159:7005 slave 68cc9ca44041627308b176841da689b56b599a42 0 1462784016056 6 connected
    80655f860c39d2f0f46f29a9d11a6dfac227431c 192.168.56.159:7003 master - 0 1462784015046 4 connected 5512-10922
    72cf83dd2da22e7239075abd75fcc713492187e7 192.168.56.160:7002 slave 80655f860c39d2f0f46f29a9d11a6dfac227431c 0 1462784015046 4 connected
    2e30017779471ea0c2609b5badf2733951fb9f46 192.168.56.160:7006 master,fail - 1462784002036 1462784001935 7 disconnected
    9995d337a11da3487a393c546d6547c5a3229d39 192.168.56.160:7000 master - 0 1462784015550 1 connected 49-5460
    再次启动7006后，7006自动替换为7007 slave
    127.0.0.1:7004> CLUSTER NODES
    68cc9ca44041627308b176841da689b56b599a42 192.168.56.160:7001 master - 0 1462784108358 2 connected 10923-16383
    8de4c186553cd6cba9ef72ec3549916ce1d5bcd8 192.168.56.159:7007 master - 0 1462784108860 8 connected 0-48 5461-5511
    097c31f3d8c283e327a975889630fc79c7376352 192.168.56.159:7004 myself,slave 9995d337a11da3487a393c546d6547c5a3229d39 0 0 5 connected
    b0b592510b6140b994c0c4d5a7e0016e75478911 192.168.56.159:7005 slave 68cc9ca44041627308b176841da689b56b599a42 0 1462784107351 6 connected
    80655f860c39d2f0f46f29a9d11a6dfac227431c 192.168.56.159:7003 master - 0 1462784108860 4 connected 5512-10922
    72cf83dd2da22e7239075abd75fcc713492187e7 192.168.56.160:7002 slave 80655f860c39d2f0f46f29a9d11a6dfac227431c 0 1462784106850 4 connected
    2e30017779471ea0c2609b5badf2733951fb9f46 192.168.56.160:7006 slave 8de4c186553cd6cba9ef72ec3549916ce1d5bcd8 0 1462784107352 8 connected
    9995d337a11da3487a393c546d6547c5a3229d39 192.168.56.160:7000 master - 0 1462784107856 1 connected 49-5460

基本命令

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（node），以及这些节点的相关信息。  
    节点  
    CLUSTER MEET <ip> <port> 将 ip 和 port 所指定的节点添加到集群当中，让它成为集群的一份子。  
    CLUSTER FORGET <node_id> 从集群中移除 node_id 指定的节点。  
    CLUSTER REPLICATE <node_id> 将当前节点设置为 node_id 指定的节点的从节点。  
    CLUSTER SAVECONFIG 将节点的配置文件保存到硬盘里面。  
    槽(slot)  
    CLUSTER ADDSLOTS <slot> [slot ...] 将一个或多个槽（slot）指派（assign）给当前节点。  
    CLUSTER DELSLOTS <slot> [slot ...] 移除一个或多个槽对当前节点的指派。  
    CLUSTER FLUSHSLOTS 移除指派给当前节点的所有槽，让当前节点变成一个没有指派任何槽的节点。  
    CLUSTER SETSLOT <slot> NODE <node_id> 将槽 slot 指派给 node_id 指定的节点，如果槽已经指派给另一个节点，那么先让另一个节点删除该槽>，然后再进行指派。  
    CLUSTER SETSLOT <slot> MIGRATING <node_id> 将本节点的槽 slot 迁移到 node_id 指定的节点中。  
    CLUSTER SETSLOT <slot> IMPORTING <node_id> 从 node_id 指定的节点中导入槽 slot 到本节点。  
    CLUSTER SETSLOT <slot> STABLE 取消对槽 slot 的导入（import）或者迁移（migrate）。  
    键  
    CLUSTER KEYSLOT <key> 计算键 key 应该被放置在哪个槽上。  
    CLUSTER COUNTKEYSINSLOT <slot> 返回槽 slot 目前包含的键值对数量。  
    CLUSTER GETKEYSINSLOT <slot> <count> 返回 count 个 slot 槽中的键。