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colben
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---
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title: "CentOS7 安装 Redis 集群"
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date: 2019-11-29T15:14:29+08:00
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lastmod: 2019-11-29T15:14:29+08:00
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lastmod: 2023-03-01T20:03:00+08:00
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tags: ["redis"]
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categories: ["database"]
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---
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## 环境
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- 操作系统: CentOS7.7，关闭 firewalld 和 selinux
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- Redis: 5.0.6
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- 操作系统: CentOS7.9，关闭 firewalld 和 selinux
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- Redis: 5.0.14
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- master 实例
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- 10.0.4.110:6371
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- 10.0.4.110:6372
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- 10.0.4.110:6373
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- slave 实例
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- 10.0.4.111:6371
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- 10.0.4.111:6372
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- 10.0.4.111:6373
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## 编译 redis server
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- 在 CentOS7.7 测试服务器上下载、编译
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- 在 CentOS7.9 测试服务器上下载、编译
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```bash
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wget http://download.redis.io/releases/redis-5.0.6.tar.gz
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tar xzf redis-5.0.6.tar.gz
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cd redis-5.0.6
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curl -LO http://download.redis.io/releases/redis-5.0.14.tar.gz
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tar zxf redis-5.0.14.tar.gz
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cd redis-5.0.14
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make
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```
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- 抽取安装文件
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```bash
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mkdir -p /opt/redis_cluster/{bin,conf}
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cp src/{redis-server,redis-cli,redis-benchmark} /opt/redis_cluster/bin/
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# redis-check-rdb 和 redis-check-aof 与 redis-server 校验值一致，无需复制
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mkdir -p /opt/redis/{bin,conf}
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cp src/{redis-server,redis-cli,redis-benchmark} /opt/redis/bin/
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cd /opt/redis/bin
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ln -s redis-server redis-check-aof
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ln -s redis-server redis-check-rdb
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ln -s redis-server redis-sentinel
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```
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- 创建 /opt/redis/conf/redis-6379.conf，常用配置如下
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```
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- 创建 /opt/redis_cluster/conf/redis.conf，常用配置如下
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```bash
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bind 0.0.0.0
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protected-mode yes
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tcp-backlog 511
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timeout 3600
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tcp-keepalive 300
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daemonize no
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protected-mode no
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port 6379
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daemonize yes
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supervised no
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pidfile log/redis-6379.pid
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loglevel notice
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logfile log/redis-6379.log
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always-show-logo no
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#save ""
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save 900 1
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save 300 10
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save 60 10000
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stop-writes-on-bgsave-error yes
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rdbcompression yes
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rdbchecksum yes
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dbfilename dump.rdb
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#masterauth "123456"
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replica-serve-stale-data yes
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replica-read-only yes
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repl-diskless-sync no
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repl-diskless-sync-delay 5
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repl-disable-tcp-nodelay no
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replica-priority 100
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#requirepass "123456"
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maxclients 10000
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maxmemory 4294967296
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maxmemory-policy volatile-lru
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lazyfree-lazy-eviction no
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lazyfree-lazy-expire no
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lazyfree-lazy-server-del no
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replica-lazy-flush no
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dir db-6379
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maxclients 8192
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maxmemory 6442450944
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#requirepass xxxx
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#masterauth xxxx
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#cluster-enabled yes
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#cluster-config-file nodes-6379.conf
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maxmemory-policy volatile-random
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appendonly no
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appendfilename "appendonly.aof"
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appendfsync everysec
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no-appendfsync-on-rewrite no
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auto-aof-rewrite-percentage 100
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auto-aof-rewrite-min-size 64mb
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aof-load-truncated yes
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aof-use-rdb-preamble yes
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lua-time-limit 5000
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cluster-enabled yes
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cluster-node-timeout 5000
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slowlog-log-slower-than 10000
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slowlog-max-len 128
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latency-monitor-threshold 0
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notify-keyspace-events ""
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hash-max-ziplist-entries 512
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hash-max-ziplist-value 64
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list-max-ziplist-size -2
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list-compress-depth 0
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set-max-intset-entries 512
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zset-max-ziplist-entries 128
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zset-max-ziplist-value 64
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hll-sparse-max-bytes 3000
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stream-node-max-bytes 4096
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stream-node-max-entries 100
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activerehashing yes
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client-output-buffer-limit normal 0 0 0
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client-output-buffer-limit replica 256mb 64mb 60
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client-output-buffer-limit pubsub 32mb 8mb 60
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hz 10
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dynamic-hz yes
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aof-rewrite-incremental-fsync yes
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rdb-save-incremental-fsync yes
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```
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- 创建 /opt/redis_cluster/redis@.service，配置如下
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- 创建 /opt/redis/conf/redis-637{1..3}.conf
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```bash
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cd /opt/redis/conf
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cp redis-6379.conf redis-6371.conf
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cp redis-6379.conf redis-6372.conf
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cp redis-6379.conf redis-6373.conf
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sed -i \
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-e 's/6379/6371/g' \
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-e '/daemonize/cdaemonize no' \
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-e '/supervised/csupervised systemd' \
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-e '/requirepass/crequirepass 123456' \
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-e '/masterauth/cmasterauth 123456' \
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-e '/cluster/^#//' \
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redis-6371.conf
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sed -i \
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-e 's/6379/6372/g' \
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-e '/daemonize/cdaemonize no' \
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-e '/supervised/csupervised systemd' \
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-e '/requirepass/crequirepass 123456' \
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-e '/masterauth/cmasterauth 123456' \
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-e '/cluster/^#//' \
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redis-6372.conf
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sed -i \
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-e 's/6379/6373/g' \
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-e '/daemonize/cdaemonize no' \
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-e '/supervised/csupervised systemd' \
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-e '/requirepass/crequirepass 123456' \
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-e '/masterauth/cmasterauth 123456' \
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-e '/cluster/^#//' \
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redis-6373.conf
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```
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- 创建日志目录和数据目录
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```bash
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cd /opt/redis
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mkdir -p db-{6371..6373} log
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```
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- 创建 /opt/redis/redis@.service，内容如下
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```ini
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[Unit]
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Description=Redis cluster -- node %i
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After=network.target
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[Service]
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ExecStartPre=/usr/bin/ls -d /var/lib/redis_cluster/%i
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ExecStart=/opt/redis_cluster/bin/redis-server /opt/redis_cluster/conf/redis.conf \
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--daemonize no \
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--port %i \
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--pidfile /var/run/redis_%i.pid \
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--logfile /var/log/redis_cluster/%i.log \
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--dir /var/lib/redis_cluster/%i \
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--cluster-config-file /var/lib/redis_cluster/%i/nodes.conf
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ExecStop=/opt/redis_cluster/bin/redis-cli -h 127.0.0.1 -p %i shutdown
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WorkingDirectory=/opt/redis
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ExecStart=/opt/redis/bin/redis-server conf/redis-%i.conf
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Restart=on-failure
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RestartSec=1
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RestartSec=2
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[Install]
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WantedBy=multi-user.target
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```
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## 部署
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- 把测试机的 /opt/redis_cluster 目录复制到 10.0.4.110 和 10.0.4.111 上
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- 把 /opt/redis 目录复制到 10.0.4.110 和 10.0.4.111 上
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```bash
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scp -r /opt/redis_cluster 10.0.4.110:/opt/
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scp -r /opt/redis_cluster 10.0.4.111:/opt/
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scp -r /opt/redis 10.0.4.110:/opt/
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scp -r /opt/redis 10.0.4.111:/opt/
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```
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- 在 10.0.4.110 和 10.0.4.111 上都执行以下操作
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```bash
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mv /opt/redis_cluster/redis@.service /usr/lib/systemd/system/
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cp /opt/redis/redis@.service /usr/lib/systemd/system/
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systemctl daemon-reload
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mkdir -p /var/lib/redis_cluster/{6371..6373}
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mkdir -p /var/log/redis_cluster
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```
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- 在 10.0.4.110 和 10.0.4.111 上配置实例开机启动
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```bash
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systemctl enable redis@6371
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systemctl enable redis@6372
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systemctl enable redis@6373
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```
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- 在 10.0.4.110 和 10.0.4.111 上启动全部实例
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```bash
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systemctl start redis@6371
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@ -149,24 +147,31 @@ categories: ["database"]
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```
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## 配置集群
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- 在 10.0.4.110 或 10.0.4.111 上创建集群，指定三个 master 实例
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- 在 10.0.4.110 上创建集群，指定三个 master 实例
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```bash
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/opt/redis_cluster/bin/redis-cli \
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/opt/redis/bin/redis-cli \
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-a 123456 \
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--cluster create 10.0.4.110:6371 10.0.4.110:6372 10.0.4.110:6373
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```
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- 输出如下图
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- 同意配置，输入 "yes"，回车后输出如下图
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- 查看集群当前实例
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```bash
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/opt/redis_cluster/bin/redis-cli -p 6371 cluster nodes
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/opt/redis/bin/redis-cli -p 6371 cluster nodes
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```
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- 输出如下图
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- 添加 slave 实例 10.0.4.111:6371，同步 master 10.0.4.110:6371
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```bash
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/opt/redis_cluster/bin/redis-cli \
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/opt/redis/bin/redis-cli \
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-a 123456 \
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--cluster add-node 10.0.4.111:6371 10.0.4.110:6371 \
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--cluster-slave \
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--cluster-master-id 5be0edaf74d1eec50bbe675f9698397023a943b7
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@ -174,32 +179,39 @@ categories: ["database"]
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# --cluster-slave 指定添加 slave 实例
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# --cluster-master-id 指定 10.0.4.110:6371 的 id，即本次添加实例的 master
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```
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- 输出如下图
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- 添加 slave 实例 10.0.4.111:6372，同步 master 10.0.4.110:6372
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```bash
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/opt/redis_cluster/bin/redis-cli \
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/opt/redis/bin/redis-cli \
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--cluster add-node 10.0.4.111:6372 10.0.4.110:6371 \
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--cluster-slave \
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--cluster-master-id 96f2225fdd054d8a16b31726fd1eb0b66c612646
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```
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- 输出如下图
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- 添加 slave 实例 10.0.4.111:6373，同步 master 10.0.4.110:6373
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```bash
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/opt/redis_cluster/bin/redis-cli \
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/opt/redis/bin/redis-cli \
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--cluster add-node 10.0.4.111:6373 10.0.4.110:6371 \
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--cluster-slave \
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--cluster-master-id cd60c238e66c8b4a31355bee4610444a47acef86
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```
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- 输出如下图
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- 查看集群当前实例
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```bash
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/opt/redis_cluster/bin/redis-cli -p 6371 cluster nodes
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/opt/redis/bin/redis-cli -p 6371 cluster nodes
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```
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- 输出如下图
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## Docker 部署
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- 安装 docker-ce，参考[这里](https://www.colben.cn/post/docker/#%E5%AE%89%E8%A3%85)
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