goland连接虚拟机的redis redis虚拟ip

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数据探索者 2023-11-11 12:22:04

文章标签 goland连接虚拟机的redis 数据库运维 ruby redis 文章分类 Redis 数据库

安装redis

我这里装的是一主三从，其中有一个从一直不能切换到主，所以这台机器上不需要配置keepalived，只需要在redis.conf文件配置上加上slaveof 20.200.45.95 6479，这个IP配置的是虚拟IP的地址，因为你不知道主机到时候会是哪一台IP地址。

机器信息：20.200.45.72 主

从

从（永远不能升为主）

申请的虚拟IP：20.200.45.95

一．需要gubby环境和gc++环境

yum install gcc zib ruby rubygems tcl

二．下载解压redis

解压：tar -zxvf redis-4.0.2.tar.gz

> cd redis-4.0.2

> make

> make test

> make install

安装成功后，在/usr/local/bin/目录下，会出现6个文件，如下图

goland连接虚拟机的redis redis虚拟ip_ruby

你可以在redis-4.0.2目录下，创建bin文件夹，把/usr/local/bin/下的文件拷贝到

redis-4.0.2/bin目录下，在创建个logs文件夹，步骤如下：

> cd redis-4.0.2

> mkdir bin

> mkdir logs

> cp /usr/local/bin /home/user1/redis-4.0.2/bin

给其中三个文件赋予高一点的权限，最高是777

>chmod 777 redis-cli

>chmod 777 redis-server

>chmod 777 redis-sentinel

三．修改配置文件

每个redis配置文件都一致，注意：永远不能升为主的机器上，再加上slaveof 20.200.45.95 6479 这个配置就好了，别的机器不需要这个配置。

redis.conf基本配置：

bind 0.0.0.0
port 6479
protected-mode no
daemonize yes
pidfile "app/redis1z3c/redis/redis_6479.pid"
logfile "app/redis1z3c/redis/logs/redis.log"
stop-writes-on-bgsave-error no
dir "app/redis1z3c/redis/bin"
slave-serve-stale-data yes
slave-read-only no
slave-priority 80
appendonly yes

四．启动redis

我redis安装在/app/redis1z3c/redis目录下

启动72机器：后面73,74,75依次都是这个命令

> cd /app/redis1z3c/redis/bin

> ./redis-server ../redis.conf ##启动redis

> /redis-cli -h 20.200.45.72 -p 6479

输入info，可以看到redis信息，

goland连接虚拟机的redis redis虚拟ip_redis_02

会发现除了75的机器，每一台都是master

75机器显示是slave,如图：

goland连接虚拟机的redis redis虚拟ip_redis_03

因为keepalived没有启动，所以虚拟IP显示的是down机状态。

安装keepalived

一、安装依赖环境：

yum install kernel-devel openssl-devel popt-devel ipvsadm libnl libnl-devel

二、下载解压keepalived

我是安装在/app/redis1z3c/目录下

解压：tar -zxvf keepalived-2.0.10.tar.gz

> cd keepalived-2.0.10

> ./configure --prefix=/usr/local/keepalived

> make && make install

在/usr/local/keepalived相应的生成4个文件夹，如图：

goland连接虚拟机的redis redis虚拟ip_goland连接虚拟机的redis_04

三、把相应的文件移到系统相应的目录中

注意：keepalived启动，读取的配置文件一定是/etc/keepalived/keepalived.conf文件

> cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/keepalived

> cp /usr/local/keepalived/sbin/keepalived /usr/sbin/keepalived

在/etc目录下，创建keepalived文件夹

> mkdir keepalived

> cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived ##这是keepalived配置文件

> cp /app/redis1z3c/keepalived-2.0.10/keepalived/etc/init.d/keepalived /etc/init.d ##这是启动脚本

四、修改keepalived日志文件存放的地方

默认是放在/var/log/message下面，但是这个文件有很多别的日志信息，所以我们单独配置keepalived日志文件

修改/etc/sysconfig/keepalived文件：

> vi /etc/sysconfig/keepalived

把KEEPALIVED_OPTIONS="-D" 修改成KEEPALIVED_OPTIONS="-D -d -S 0"，保存

修改 /etc/rsyslog.conf

在最后一行添加：

local0.* /etc/keepalived/keepalived.log

systemctl restart rsyslog ##重启rsyslog

五、修改配置文件和脚本

脚本文件我放在/etc/keepalived/scripts文件下，在/etc/keepalived文件下在创建log文件

如图：

goland连接虚拟机的redis redis虚拟ip_ruby_05

1. 修改keepalived.conf文件

这是20.200.45.72的配置：

! Configuration File for keepalived
 
global_defs {
 
   router_id ocs_keepalived
}
 
vrrp_script chk_redis {
    script "/etc/keepalived/scripts/redis_check.sh 127.0.0.1 6379"
    interval 2
    }
 
vrrp_instance VI_1 {
    state MASTER  ###主节点，从机器要把MASTER  换成BACKUP
    interface eth0 ###网卡
    virtual_router_id 25 ###设置VRID,决定多播的MAC地址
    mcast_src_ip 20.200.45.72  ###多播地址，73的机器上配置20.200.45.73的IP，74的机器上配置20.200.45.74的IP地址
    priority 100  ###优先级，73的机器上配置98,74的机器上配置95
    advert_int 1 ###检查间隔
    authentication { ###设置的认证
        auth_type PASS
        auth_pass 1111
    }
     track_script {
        chk_redis
    }
    virtual_ipaddress { ###虚拟IP地址
        20.200.45.95
    } 
    notify_master "/etc/keepalived/scripts/redis_master.sh 127.0.0.1 20.200.45.95 6479"
    notify_backup "/etc/keepalived/scripts/redis_backup.sh 127.0.0.1 20.200.45.95 6479"
    notify_fault  /etc/keepalived/scripts/redis_fault.sh  
    notify_stop   "/etc/keepalived/scripts/redis_stop.sh 127.0.0.1 20.200.45.95 6479"
}

2.添加redis_check.sh脚本

#!/bin/bash 
ALIVE=`/app/redis1z3c/redis/bin/redis-cli -h $1 -p $2 PING`
LOGFILE="/etc/keepalived/log/keepalived-redis-check.log"
echo "[CHECK]" >> $LOGFILE
date >> $LOGFILE
if [ $ALIVE == "PONG" ]; then :
   echo "Success: redis-cli -h $1 -p $2 PING $ALIVE" >> $LOGFILE 2>&1
   exit 0
else
   echo "Failed:redis-cli -h $1 -p $2 PING $ALIVE " >> $LOGFILE 2>&1
   exit 1
fi

3.添加redis_master.sh脚本

#!/bin/bash 
REDISCLI="/app/redis1z3c/redis/bin/redis-cli -h $1 -p $3"
LOGFILE="/etc/keepalived/log/keepalived-redis-state.log"
echo "[master]" >> $LOGFILE
echo "$2 $3" >>$LOGFILE
echo "关闭备份,转换成主机模式" >> $LOGFILE
date >> $LOGFILE
echo "Being master...." >> $LOGFILE 2>&1
echo "Run SLAVEOF NO ONE cmd ... " >> $LOGFILE
$REDISCLI SLAVEOF NO ONE >> $LOGFILE 2>&1
echo "close slaver ,become master " >> $LOGFILE
sleep 5
 
echo "发送消息给监控" >> $LOGFILE

4.添加redis_stop.sh脚本

#!/bin/bash
LOGFILE=/etc/keepalived/log/keepalived-redis-state.log
echo "[stop]" >> $LOGFILE
date >> $LOGFILE
echo "$2 $3" >> $LOGFILE
echo "keepalived 出现故障,redis变为备机">> $LOGFILE
REDISCLI="/app/redis1z3c/redis/bin/redis-cli -h $1 -p $3"
echo "Being slave...." >> $LOGFILE 2>&1
echo "Run SLAVEOF cmd ..." >> $LOGFILE 2>&1
$REDISCLI SLAVEOF $2 $3 >> $LOGFILE

5.添加redis_backup.sh脚本

#!/bin/bash 
REDISCLI="/app/redis1z3c/redis/bin/redis-cli -h $1 -p $3"
LOGFILE="/etc/keepalived/log/keepalived-redis-state.log"
echo "[BACKUP]" >> $LOGFILE
echo "$1 $3" >> $LOGFILE
echo "关闭主机模式,转为备机模式" >> $LOGFILE
date >> $LOGFILE
echo "Being slave...." >> $LOGFILE 2>&1
echo "Run SLAVEOF cmd ..." >> $LOGFILE 2>&1
$REDISCLI SLAVEOF $2 $3 >> $LOGFILE
 
echo "发送消息给监控" >> $LOGFILE

6.添加redis_fault.sh 脚本

#/bin/bash 
LOGFILE="/etc/keepalived/log/keepalived-redis-state.log"
echo "[fault]" >> $LOGFILE
date >> $LOGFILE
echo "redis 出现故障,无法ping通,请检查redis服务" >> $LOGFILE