Linux下搭建 redis

一、下载redis

这个可以到官网下载，直接在百度里面搜索redis

二、安装redis

1、安装gcc

1	yum install gcc-c++

 2、解压redis文件并且重命名

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[root@localhost local]#tar -zxvf /root/redis-3.2.12.tar.gz -C /usr/local/ [root@localhost local]# cd /usr/local/ [root@localhost local]# mv redis-3.2.12/  mv redis

3、编译redis

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[root@localhost local]# cd redis [root@localhost local]# make [root@localhost local]# make PREFIX=/usr/local/redis install

4、测试一下是否已经安装好

1 2	[root@localhost redis]# cd /usr/local/redis/bin [root@localhost bin]# ./redis-server

显示内容如下：

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9190:C 03 Sep 10:19:09.291 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo 9190:C 03 Sep 10:19:09.292 # Redis version=4.0.1, bits=32, commit=00000000, modified=0, pid=9190, just started 9190:C 03 Sep 10:19:09.292 # Warning: no config file specified, using the default config. In order to specify a config file use redis-server /path/to/redis.conf 9190:M 03 Sep 10:19:09.295 * Increased maximum number of open files to 10032 (it was originally set to 1024). 9190:M 03 Sep 10:19:09.312 # Warning: 32 bit instance detected but no memory limit set. Setting 3 GB maxmemory limit with 'noeviction' policy now.                 _._            _.-``__ ''-._       _.-``    `.  `_.  ''-._           Redis 4.0.1 (00000000/0) 32 bit   .-`` .-```.  ```\/    _.,_ ''-._  (    '      ,       .-`  | `,    )     Running in standalone mode  |`-._`-...-` __...-.``-._|'` _.-'|     Port: 6379  |    `-._   `._    /     _.-'    |     PID: 9190   `-._    `-._  `-./  _.-'    _.-'  |`-._`-._    `-.__.-'    _.-'_.-'|  |    `-._`-._        _.-'_.-'    |           http://redis.io   `-._    `-._`-.__.-'_.-'    _.-'  |`-._`-._    `-.__.-'    _.-'_.-'|  |    `-._`-._        _.-'_.-'    |   `-._    `-._`-.__.-'_.-'    _.-'       `-._    `-.__.-'    _.-'           `-._        _.-'               `-.__.-'   9190:M 03 Sep 10:19:09.316 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128. 9190:M 03 Sep 10:19:09.316 # Server initialized 9190:M 03 Sep 10:19:09.318 # WARNING overcommit_memory is set to 0! Background save may fail under low memory condition. 9190:M 03 Sep 10:19:09.318 * Ready to accept connections

三、加入开机启动

1、加入开机启动

1 2	[root@localhost local]# cd /usr/local/redis/utils [root@localhost utils]#  cp redis_init_script /etc/init.d/redis

2、编辑启动文件

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[root@localhost utils]# vim  /etc/init.d/redis #!/bin/sh # # Simple Redis init.d script conceived to work on Linux systems # as it does use of the /proc filesystem.   REDISPORT=6379 EXEC=/usr/local/redis/bin/redis-server   #指向正确的bin地址 CLIEXEC=/usr/local/redis/bin/redis-cli    #这边同上   PIDFILE=/var/run/redis_${REDISPORT}.pid CONF="/etc/redis/${REDISPORT}.conf"   case "$1" in     start)         if [ -f $PIDFILE ]         then                 echo "$PIDFILE exists, process is already running or crashed"         else                 echo "Starting Redis server..."                 $EXEC $CONF         fi         ;;     stop)         if [ ! -f $PIDFILE ]         then                 echo "$PIDFILE does not exist, process is not running"         else                 PID=$(cat $PIDFILE)                 echo "Stopping ..."                 $CLIEXEC -p $REDISPORT shutdown                 while [ -x /proc/${PID} ]                 do                     echo "Waiting for Redis to shutdown ..."                     sleep 1                 done                 echo "Redis stopped"         fi         ;;     *)         echo "Please use start or stop as first argument"         ;; esac

3、创建配置文件

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[root@localhost local]# mkdir /etc/redis [root@localhost local]# cp /usr/local/redis/redis.conf  /etc/redis/6379.conf [root@localhost local]# cd /etc/redis/ [root@localhost redis]# vim 6379.conf #bind 127.0.0.1   #这一行注释 protected-mode no  #改成no 表示无需密码登录 daemonize yes  #改成yes

4、启动redis

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[root@localhost local]# service redis start [root@localhost local]# ps -ef|grep redis root     60252     1  0 15:27 ?        00:00:00 /usr/local/redis/bin/redis-server *:6379 root     61165 48206  0 15:44 pts/0    00:00:00 grep --color=auto redis

四、redis集群配置

 4.1、yum安装下载依赖的插件

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yum install ruby -y yum install rubygems -y yum -y install ruby ruby-devel rubygems rpm-build ruby -version yum install centos-release-scl-rh scl  enable  rh-ruby23 bash gem install redis

4.2、必须准备6个redis，因为是3主3从，所以不得小于6台：

安装上述安装redis的办法，在装5台，分别是，分别装在:/usr/local目录下：

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redis_6379 redis_6380 redis_6381 redis_6382 redis_6383 redis_6384

同时启动文件和配置文件也，配置文件在: /etc/redis/下：

1 2	[root@shtw-redisserver09 redis]# ls 6379.conf  6380.conf  6381.conf  6382.conf  6383.conf  6384.conf

 配置文件内容如下：

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#bind 127.0.0.1  #注释掉 port 6380   #端口号需要修改 tcp-backlog 511 timeout 0 tcp-keepalive 300 supervised no pidfile /var/run/redis_6380.pid   #进程号修改 loglevel notice logfile "" databases 16 save 900 1 save 300 10 save 60 10000 stop-writes-on-bgsave-error yes rdbcompression yes rdbchecksum yes dbfilename dump.rdb dir ./ slave-serve-stale-data yes slave-read-only yes repl-diskless-sync no repl-diskless-sync-delay 5 repl-disable-tcp-nodelay no slave-priority 100 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   #开启集群模式 appendonly yes cluster-config-file nodes-6380.conf latency-monitor-threshold 0 notify-keyspace-events "" list-max-ziplist-size -2 list-compress-depth 0 zset-max-ziplist-entries 128 zset-max-ziplist-value 64 hll-sparse-max-bytes 3000 activerehashing yes hz 10 aof-rewrite-incremental-fsync yes

完整的文件内容：

 

上传 redis-trib.rb 文件至/usr/local下：

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[root@shtw-redisserver09 local]# cd /usr/local/ [root@shtw-redisserver09 local]# rz -y [root@shtw-redisserver09 local]# ll -rwxr-xr-x  1 root root 60852 Aug 23  2019 redis-trib.rb

 redis-trib.rb下载地址：https://pan.baidu.com/s/1NqwED60Z9ggiZPOJIco7rA  提取码：tn8d

然后执行如下命令：

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[root@shtw-redisserver09 local]#./redis-trib.rb create --replicas 1 10.10.202.236:6379  10.10.202.236:6380 10.10.202.236:6381 10.10.202.236:6382 10.10.202.236:6383 10.10.202.236:6384  #如果上述成功了之后，下面的就不要执行了   [root@shtw-redisserver09 local]#./redis-trib.rb create --replicas 2 10.10.202.236:6379  10.10.202.236:6380 10.10.202.236:6381 10.10.202.236:6382 10.10.202.236:6383 10.10.202.236:6384

重启报错:

>>> Creating cluster

[ERR] Node 127.0.0.1:6379 is not empty. Either the node already knows other nodes (check with CLUSTER NODES) or contains some key in database 0.

 

解决方法:删除nodes-xxx.conf配置文件，删除pid文件，删除各节点aof,rdb文件,杀掉所有redis进程，然后重启redis集群搞定