搭建環境node
系統:centos7.4linux
服務器金山雲redis
安裝ruby環境vim
[root@jsy-bj-test00 ~]# yum install -y ruby rubygems
複製6份redis服務centos
[work@jsy-bj-test00 ~]$ cp -rp redis redis1 [work@jsy-bj-test00 ~]$ cp -rp redis redis2 [work@jsy-bj-test00 ~]$ cp -rp redis redis3
redis配置文件修改ruby
#六個節點需作以下更改 [work@jsy-bj-test00 ~]$ vim redis1/etc/redis.conf [work@jsy-bj-test00 ~]$ sed -i 's/port 6379/port 6380/g' redis5/etc/redis.conf #修改端口 port 6380 #打開註釋,開啓集羣模式 cluster-enabled yes #集羣的配置文件 cluster-config-file nodes-6380.conf [work@jsy-bj-test00 ~]$ sed -i 's/cluster-config-file nodes-6379.conf/cluster-config-file nodes-6380.conf/g' redis5/etc/redis.conf #pidfile文件 pidfile /var/run/redis_6380.pid [work@jsy-bj-test00 ~]$ sed -i 's/pidfile \/var\/run\/redis_6380.pid/pidfile \/var\/run\/redis_6380.pid/g' redis5/etc/redis.conf #日誌文件 logfile "/home/work/logs/redis/6380.log" [work@jsy-bj-test00 ~]$ sed -i 's/logfile "\/home\/work\/logs\/redis\/6379.log"/logfile "\/home\/work\/logs\/redis\/6380.log"/g' redis5/etc/redis.conf #rdb持久化文件 dbfilename dump6380.rdb [work@jsy-bj-test00 ~]$ sed -i 's/dbfilename dump6379.rdb/dbfilename dump6380.rdb/g' redis5/etc/redis.conf #請求超時,單位毫秒 cluster-node-timeout 5000 #開啓aof持久化方式 appendonly yes #配置持久化文件 appendfilename "appendonly6379.aof" [work@jsy-bj-test00 ~]$ sed -i 's/appendfilename "appendonly6379.aof"/appendfilename "appendonly6383.aof"/g' redis5/etc/redis.conf
啓動腳本start_all.shapp
/home/work/redis/bin/redis-server /home/work/redis/etc/redis.conf & /home/work/redis/bin/redis-server /home/work/redis/etc/redis6380.conf & /home/work/redis/bin/redis-server /home/work/redis/etc/redis6381.conf & /home/work/redis/bin/redis-server /home/work/redis/etc/redis6382.conf & /home/work/redis/bin/redis-server /home/work/redis/etc/redis6383.conf & /home/work/redis/bin/redis-server /home/work/redis/etc/redis6384.conf &
關閉腳本stop_all.shide
/home/work/redis/bin/redis-cli -p 6379 -a test shutdown /home/work/redis/bin/redis-cli -p 6380 -a test shutdown /home/work/redis/bin/redis-cli -p 6381 -a test shutdown /home/work/redis/bin/redis-cli -p 6382 -a test shutdown /home/work/redis/bin/redis-cli -p 6383 -a test shutdown /home/work/redis/bin/redis-cli -p 6384 -a test shutdown
執行建立集羣命令工具
有以下報錯
[work@jsy-bj-test00 src]$ ./redis-trib.rb create --replicas 1 127.0.0.1:6379 127.0.0.1:6380 127.0.0.1:6381 127.0.0.1:6382 127.0.0.1:6383 127.0.0.1:6384 /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require': cannot load such file -- redis (LoadError) from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require' from ./redis-trib.rb:25:in `
'緣由:安裝redis接口報錯ruby版本太低
[root@jsy-bj-test00 ~]# gem install redis Fetching: redis-4.1.3.gem (100%) ERROR: Error installing redis: redis requires Ruby version >= 2.3.0.
解決辦法到官網下載最新穩定版源代碼 http://www.ruby-lang.org/en/downloads/ 進行編譯安裝
[work@jsy-bj-test00 soft]$ tar zxvf ruby-2.7.0.tar.gz [work@jsy-bj-test00 soft]$ cd ruby-2.7.0 [work@jsy-bj-test00 ruby-2.7.0]$ ./configure --prefix=/home/work/ruby && make && make install
安裝redis接口
[work@jsy-bj-test00 bin]$ gem install redis
再次執行建立集羣命令
[work@jsy-bj-test00 src]$ ./redis-trib.rb create --replicas 1 127.0.0.1:6379 127.0.0.1:6380 127.0.0.1:6381 127.0.0.1:6382 127.0.0.1:6383 127.0.0.1:6384 >>> Creating cluster >>> Performing hash slots allocation on 6 nodes... ...... >>> Nodes configuration updated >>> Assign a different config epoch to each node >>> Sending CLUSTER MEET messages to join the cluster Waiting for the cluster to join... >>> Performing Cluster Check (using node 127.0.0.1:6379) ...... [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered.
建立成功,查看集羣狀態
[work@jsy-bj-test00 ~]$ ./redis/bin/redis-cli -h 127.0.0.1 -p 6379 -c 127.0.0.1:6379> cluster info cluster_state:ok cluster_slots_assigned:16384 cluster_slots_ok:16384 cluster_slots_pfail:0 cluster_slots_fail:0 cluster_known_nodes:6 cluster_size:3 cluster_current_epoch:6 cluster_my_epoch:1 cluster_stats_messages_sent:627 cluster_stats_messages_received:627
查看集羣節點信息
127.0.0.1:6379> cluster nodes 565246bf31d8e05e464db7455521b1a9f165a9cd 127.0.0.1:6380 master - 0 1578447776230 2 connected 5461-10922 1b99b2a1e4b530501476ab48422c75f30423fd19 127.0.0.1:6383 slave 565246bf31d8e05e464db7455521b1a9f165a9cd 0 1578447778233 5 connected 735ad5778458059316794b9378d4b81aaff20322 127.0.0.1:6379 myself,master - 0 0 1 connected 0-5460 757c2c11ecebfc607aa10a6877e348d0e2da484f 127.0.0.1:6381 master - 0 1578447777732 3 connected 10923-16383 f22efc2bcfcd11cee6487ebc9c75de3b59f5e1d0 127.0.0.1:6382 slave 735ad5778458059316794b9378d4b81aaff20322 0 1578447776230 4 connected b8bba94b9647caa8600363144fd7108082e45f56 127.0.0.1:6384 slave 757c2c11ecebfc607aa10a6877e348d0e2da484f 0 1578447777232 6 connected #這是很重要的命令,咱們須要關心的信息有: #第一個參數:節點ID #第二個參數:IP:PORT@TCP 這裏一個坑,jedis-2.9.0以前的版本解析@出錯 #第三個參數:標誌(Master,Slave,Myself,Fail...) #第四個參數:若是是從機則是主機的節點ID #最後兩個參數:鏈接的狀態和槽的位置。
集羣管理相關命令
#集羣增長節點,先複製兩個配置文件,並修改配置文件內容 [work@jsy-bj-test00 etc]$ cp -p redis.conf redis6385.conf [work@jsy-bj-test00 etc]$ cp -p redis.conf redis6386.conf [work@jsy-bj-test00 etc]$ sed -i 's/6379/6385/g' redis6385.conf [work@jsy-bj-test00 etc]$ sed -i 's/6379/6386/g' redis6386.conf
啓動6385節點
[work@jsy-bj-test00 bin]$ ./redis-server /home/work/redis/etc/redis6385.conf &
將集羣管理工具軟連到redis的bin下
[work@jsy-bj-test00 bin]$ ln -s /home/work/soft/redis-3.2.11/src/redis-trib.rb /home/work/redis/bin/redis-trib.rb
將新節點加入集羣master
[work@jsy-bj-test00 bin]$ ./redis-trib.rb add-node 127.0.0.1:6385 127.0.0.1:6379 >>> Adding node 127.0.0.1:6385 to cluster 127.0.0.1:6379 >>> Performing Cluster Check (using node 127.0.0.1:6379) ...... [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered. >>> Send CLUSTER MEET to node 127.0.0.1:6385 to make it join the cluster. [OK] New node added correctly.
查看集羣狀態,未分配槽位
[work@jsy-bj-test00 bin]$ ./redis-cli -h 127.0.0.1 -p 6379 -c cluster nodes d00d05f601df0b69df0c2cc532b636d2c83347be 127.0.0.1:6385 master - 0 1578450280191 0 connected
給6385節點分配槽位
[work@jsy-bj-test00 bin]$ ./redis-trib.rb reshard 127.0.0.1:6379 >>> Performing Cluster Check (using node 127.0.0.1:6379) ...... [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)? 500 What is the receiving node ID? d00d05f601df0b69df0c2cc532b636d2c83347be Please enter all the source node IDs. Type 'all' to use all the nodes as source nodes for the hash slots. Type 'done' once you entered all the source nodes IDs. Source node #1:all Do you want to proceed with the proposed reshard plan (yes/no)? yes #第一個參數:須要移動槽的個數, #第二個參數:接受槽的節點ID, #第三個參數:輸入"all"表示從全部原節點中獲取槽, #第四個參數:輸入"yes"開始移動槽到目標結點id #查看6385節點信息,已經分配槽位 [work@jsy-bj-test00 bin]$ ./redis-cli -h 127.0.0.1 -p 6379 -c cluster nodes d00d05f601df0b69df0c2cc532b636d2c83347be 127.0.0.1:6385 master - 0 1578452422167 7 connected 0-165 5461-5627 10923-11088
添加從節點,啓動6386節點並加入集羣
[work@jsy-bj-test00 bin]$ ./redis-server /home/work/redis/etc/redis6386.conf & [work@jsy-bj-test00 bin]$ ./redis-trib.rb add-node --slave --master-id d00d05f601df0b69df0c2cc532b636d2c83347be 127.0.0.1:6386 127.0.0.1:6385 >>> Adding node 127.0.0.1:6386 to cluster 127.0.0.1:6385 >>> Performing Cluster Check (using node 127.0.0.1:6385) ...... [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered. >>> Send CLUSTER MEET to node 127.0.0.1:6386 to make it join the cluster. Waiting for the cluster to join. >>> Configure node as replica of 127.0.0.1:6385. [OK] New node added correctly.
查看6386節點狀態
[work@jsy-bj-test00 bin]$ ./redis-cli -h 127.0.0.1 -p 6379 -c cluster nodes 6845878cbef3fe25f19a70a8db3eb29abb1b9ea6 127.0.0.1:6386 slave d00d05f601df0b69df0c2cc532b636d2c83347be 0 1578452805439 7 connected
刪除節點
[work@jsy-bj-test00 bin]$ ./redis-trib.rb del-node 127.0.0.1:6383 1b99b2a1e4b530501476ab48422c75f30423fd19 >>> Removing node 1b99b2a1e4b530501476ab48422c75f30423fd19 from cluster 127.0.0.1:6383 >>> Sending CLUSTER FORGET messages to the cluster... >>> SHUTDOWN the node.