Keepalived+redis高可用redis主从环境搭建

最新推荐文章于 2025-03-11 11:28:52 发布

DataGiant

最新推荐文章于 2025-03-11 11:28:52 发布

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分类专栏： redis手记文章标签： redis keepalived linux

DoubleJing

本文链接：https://blog.youkuaiyun.com/qq_41944882/article/details/106858376

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本文档详细介绍了如何在Linux环境中利用Keepalived搭建Redis主从高可用架构。首先，确认并安装了LVS和IPVS模块，接着部署Keepalived，分别配置主、备节点的keepalived.conf文件，并编写监控脚本。然后，安装Redis主从，确保不使用bind指令。最后，启动Redis和Keepalived，通过虚拟IP进行连接测试，模拟故障验证高可用性。当主节点宕机时，Keepalived能够将服务切换到备节点，保持服务不间断。

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环境信息：

master ： 10.1.58.19
slave：10.1.58.29
VIP：10.1.58.150

安装软件包关联

#yum -y install libnl-devel
#yum -y install libnfnetlink-devel

1、确认lvs是否安装
如下命令检查kernel是否已经支持LVS的IPVS模块：

#modprobe -l |grep ipvs
kernel/net/netfilter/ipvs/ip_vs.ko
kernel/net/netfilter/ipvs/ip_vs_rr.ko
kernel/net/netfilter/ipvs/ip_vs_wrr.ko
kernel/net/netfilter/ipvs/ip_vs_lc.ko
kernel/net/netfilter/ipvs/ip_vs_wlc.ko
kernel/net/netfilter/ipvs/ip_vs_lblc.ko
kernel/net/netfilter/ipvs/ip_vs_lblcr.ko
kernel/net/netfilter/ipvs/ip_vs_dh.ko
kernel/net/netfilter/ipvs/ip_vs_sh.ko
kernel/net/netfilter/ipvs/ip_vs_sed.ko
kernel/net/netfilter/ipvs/ip_vs_nq.ko
kernel/net/netfilter/ipvs/ip_vs_ftp.ko
kernel/net/netfilter/ipvs/ip_vs_pe_sip.ko

安装IPVS管理软件

#yum install ipvsadm -y

2、部署keepalived
主/备：

# wget http://www.keepalived.org/software/keepalived-1.3.6.tar.gz
# tar xzvf keepalived-1.3.6.tar.gz
# cd keepalived-1.3.6
# ./configure --prefix=/home/yzkf/app/keepalived 
# make
# make  install
# ln -s /home/yzkf/app/keepalived/sbin/keepalived /sbin/keepalived
# ll /sbin/keepalived
lrwxrwxrwx 1 root root 41 Oct 25 11:20 /sbin/keepalived -> /home/yzkf/app/keepalived/sbin/keepalived

制作随机启动，在源代码目录下(如果需要制作随机启动，可以用下面的方法)

#cp /home/yzkf/src_soft/keepalived-1.3.6/keepalived/etc/init.d/keepalived.rh.init /etc/init.d/keepalived
#chkconfig --add keepalived
#chkconfig  keepalived on

备注：因为启动脚本启动时会去读取默认的配置文件,即/etc/keepalived/keepalived.conf，所以需要修改/etc/init.d/keepalived的内容：如下

start() {
        echo -n "Starting Keepalived for LVS: "
        daemon keepalived  -f /home/yzkf/app/keepalived/etc/keepalived/keepalived.conf -D
        RETVAL=$?
        echo
        [ $RETVAL -eq 0 ] && touch /var/lock/subsys/keepalived
        return $RETVAL
}

3、部署redis主从
redis配置文件不能使用bind