基于Docker的Redis集群搭建
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基于Docker的Redis集群搭建
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Docker redis集群配置。我們會在一臺centos的虛擬機上，配置redis集群
前期規劃：
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redis版本 redis:5.0.14
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網絡配置，我們會創建名稱為redis的網絡，子網掩碼為 172.38.0.0/16的網絡
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我們會啟動六個redis。對應的容器名分別為：redis-1，redis-2，redis-3，redis-4，redis-5，redis-6；對應的IP為：172.38.0.11，172.38.0.12，172.38.0.13，172.38.0.14，172.38.0.15，172.38.0.16；映射到宿主機的端口分別為：6371，6372，6373，6374，6375，6376；配置文件和數據文件分別掛載在宿主機：/usr/local/docker/redis/node-1，/usr/local/docker/redis/node-2，/usr/local/docker/redis/node-3，/usr/local/docker/redis/node-4，/usr/local/docker/redis/node-5，/usr/local/docker/redis/node-6
配置過程：
- 創建網絡
- 下載redis鏡像 # 我們下載redis:5.0.14(docker pull redis:5.0.14) [root@localhost /]# docker pull redis:5.0.14 5.0.14: Pulling from library/redis e5ae68f74026: Pull complete 37c4354629da: Pull complete b065b1b1fa0f: Pull complete 99ab464ba8bb: Pull complete eb5bbe3179d2: Pull complete 2067794f93b6: Pull complete Digest: sha256:310f81701011175dc868e833d73f539282dd18510ca35d6f7b63c4d33ab4f54e Status: Downloaded newer image for redis:5.0.14 docker.io/library/redis:5.0.14 # docker images查看redis鏡像是否下載成功 [root@localhost /]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE redis 5.0.14 071510791e92 2 weeks ago 110MB mysql 5.7 738e7101490b 2 weeks ago 448MB
- 啟動六個redis
- 創建集群
我們會在宿主機上的/usr/local/docker/redis文件夾下，分別創建node-1，node-2，node-3，node-4，node-5，node-6。寫入對應的redis.conf文件的內容。注意cluster-announce-ip對應的ip。
# 1. 創建6個redis對應的配置，下面的命令可以直接復制到xshell里面執行。會生成對應的文件和寫入相應的配置 for index in $(seq 1 6);\ do \ mkdir -p /usr/local/docker/redis/node-${index}/conf touch /usr/local/docker/redis/node-${index}/conf/redis.conf cat << EOF >> /usr/local/docker/redis/node-${index}/conf/redis.conf port 6379 bind 0.0.0.0 cluster-enabled yes cluster-config-file nodes.conf cluster-node-timeout 5000 cluster-announce-ip 172.38.0.1${index} cluster-announce-port 6379 cluster-announce-bus-port 16379 appendonly yes EOF done# 2. 查看相應的文件是否成功，配置文件是否正常寫入 [root@localhost redis]# pwd /usr/local/docker/redis [root@localhost redis]# ll 總用量 0 drwxr-xr-x. 3 root root 18 12月 18 00:59 node-1 drwxr-xr-x. 3 root root 18 12月 18 00:59 node-2 drwxr-xr-x. 3 root root 18 12月 18 00:59 node-3 drwxr-xr-x. 3 root root 18 12月 18 00:59 node-4 drwxr-xr-x. 3 root root 18 12月 18 00:59 node-5 drwxr-xr-x. 3 root root 18 12月 18 00:59 node-6# 3. 啟動6個redis。注意ip的配置。注意docker數據文件和配置文件掛載到宿主機。下面的內容可以直接復制到xshell里面執行 for index in $(seq 1 6);\ do \ docker run -p 637${index}:6379 -p 1637${index}:16379 --name redis-${index} \ -v /usr/local/docker/redis/node-${index}/data:/data \ -v /usr/local/docker/redis/node-${index}/conf/redis.conf:/etc/redis/redis.conf \ -d --net redis --ip 172.38.0.1${index} redis:5.0.14 redis-server /etc/redis/redis.conf done# 4. 查看redis是否啟動成功，沒啥大問題的話，docker ps 我們可以看到我們啟動了6個redis [root@localhost redis]# docker ps創建集群，我們需要進入容器里面輸入命令：redis-cli --cluster create 172.38.0.11:6379 172.38.0.12:6379 172.38.0.13:6379 172.38.0.14:6379 172.38.0.15:6379 172.38.0.16:6379 --cluster-replicas 1
# 1. 創建集群，這里我們有6個redis,我們隨便進入一個redis里面配置，比如這里我們進入redis-1里面配置 docker exec -it redis-1 /bin/sh 進入容器 [root@localhost redis]# docker exec -it redis-1 /bin/sh# 進入容器之后，輸入命令 redis-cli --cluster create 172.38.0.11:6379 172.38.0.12:6379 172.38.0.13:6379 172.38.0.14:6379 172.38.0.15:6379 172.38.0.16:6379 --cluster-replicas 1 # 執行過程中，提示輸入的時候，輸入yes # redis-cli --cluster create 172.38.0.11:6379 172.38.0.12:6379 172.38.0.13:6379 172.38.0.14:6379 172.38.0.15:6379 172.38.0.16:6379 --cluster-replicas 1 >>> Performing hash slots allocation on 6 nodes... Master[0] -> Slots 0 - 5460 Master[1] -> Slots 5461 - 10922 Master[2] -> Slots 10923 - 16383 Adding replica 172.38.0.15:6379 to 172.38.0.11:6379 Adding replica 172.38.0.16:6379 to 172.38.0.12:6379 Adding replica 172.38.0.14:6379 to 172.38.0.13:6379 M: b5afda552e13a82efcbad213159a5f51b1ff5e9e 172.38.0.11:6379slots:[0-5460] (5461 slots) master M: db1d24dd03af679c59543807b918496d185246ec 172.38.0.12:6379slots:[5461-10922] (5462 slots) master M: b33635d04f16c013c85c69bfda59f810a2c63421 172.38.0.13:6379slots:[10923-16383] (5461 slots) master S: e15110b81065f8a882115f068026785803a1e4e1 172.38.0.14:6379replicates b33635d04f16c013c85c69bfda59f810a2c63421 S: 5ea19fe52c450aea5e18c74f8086b9d35ed7183e 172.38.0.15:6379replicates b5afda552e13a82efcbad213159a5f51b1ff5e9e S: 79ae80b43bdbc7eb7acf0ba3965bd1077c9a6d79 172.38.0.16:6379replicates db1d24dd03af679c59543807b918496d185246ec Can I set the above configuration? (type 'yes' to accept): yes >>> 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 172.38.0.11:6379) M: b5afda552e13a82efcbad213159a5f51b1ff5e9e 172.38.0.11:6379slots:[0-5460] (5461 slots) master1 additional replica(s) M: b33635d04f16c013c85c69bfda59f810a2c63421 172.38.0.13:6379slots:[10923-16383] (5461 slots) master1 additional replica(s) M: db1d24dd03af679c59543807b918496d185246ec 172.38.0.12:6379slots:[5461-10922] (5462 slots) master1 additional replica(s) S: 79ae80b43bdbc7eb7acf0ba3965bd1077c9a6d79 172.38.0.16:6379slots: (0 slots) slavereplicates db1d24dd03af679c59543807b918496d185246ec S: 5ea19fe52c450aea5e18c74f8086b9d35ed7183e 172.38.0.15:6379slots: (0 slots) slavereplicates b5afda552e13a82efcbad213159a5f51b1ff5e9e S: e15110b81065f8a882115f068026785803a1e4e1 172.38.0.14:6379slots: (0 slots) slavereplicates b33635d04f16c013c85c69bfda59f810a2c63421 [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK]# 2. 查看集群是否創建成功，進入容器，連接redis,cluster nodes查看集群信息 [root@localhost redis]# docker exec -it redis-1 /bin/sh # redis-cli 127.0.0.1:6379> cluster nodes b33635d04f16c013c85c69bfda59f810a2c63421 172.38.0.13:6379@16379 master - 0 1639808016802 3 connected 10923-16383 db1d24dd03af679c59543807b918496d185246ec 172.38.0.12:6379@16379 master - 0 1639808017000 2 connected 5461-10922 79ae80b43bdbc7eb7acf0ba3965bd1077c9a6d79 172.38.0.16:6379@16379 slave db1d24dd03af679c59543807b918496d185246ec 0 1639808017805 6 connected 5ea19fe52c450aea5e18c74f8086b9d35ed7183e 172.38.0.15:6379@16379 slave b5afda552e13a82efcbad213159a5f51b1ff5e9e 0 1639808017000 5 connected b5afda552e13a82efcbad213159a5f51b1ff5e9e 172.38.0.11:6379@16379 myself,master - 0 1639808016000 1 connected 0-5460 e15110b81065f8a882115f068026785803a1e4e1 172.38.0.14:6379@16379 slave b33635d04f16c013c85c69bfda59f810a2c63421 0 1639808016600 4 connected 127.0.0.1:6379>總結
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