1.keepalived二进制安装【Ubuntu20.04】

(1).官网下载二进制源码包

官网：
https://keepalived.org/download.html

下载二进制包：

wget https://keepalived.org/software/keepalived-2.2.7.tar.gz

亦可通过window本地下载并上传

(2).解压文件

[root@ubuntu2004 ~]#tar xf keepalived-2.2.7.tar.gz  -C /usr/local/src

(3).安装编译软件

如下有部分是操作系统自带的，并不是所有的都需要

[root@ubuntu2004 ~]#apt-get -y install libssl-dev libpopt-dev daemon build-essential libssl-dev

(4).编译、安装

[root@ubuntu2004 ~]#mkdir -p /usr/local/keepalived
[root@ubuntu2004 keepalived-2.2.7]#./configure --prefix=/usr/local/keepalived --disable-fwmark
[root@ubuntu2004 keepalived-2.2.7]#make && make install

注意：
--disable-fwmark 可用于禁用iptables规则,可访止VIP无法访问
无此选项默认会启用 ipatbles规则

(5).服务管理

[root@ubuntu2004 ~]#vim /etc/profile.d/keepalived.sh
 
#!/bin/bash
#set keepalived environment
export KEEPALIVED_HOME=/usr/local/keepalived
export PATH=$PATH:$KEEPALIVED_HOME/sbin
   
[root@ubuntu2004 ~]#source /etc/profile.d/keepalived.sh
[root@ubuntu2004 ~]#chmod +x /etc/profile.d/keepalived.sh
[root@ubuntu2004 ~]#export PATH=$PATH:$KEEPALIVED_HOME/sbin
[root@ubuntu2004 ~]#export KEEPALIVED_HOME=/usr/local/keepalived
[root@ubuntu2004 ~]#source /etc/profile.d/keepalived.sh

(6).目录配置

[root@ubuntu2004 ~]#mkdir /etc/keepalived #配置文件存放目录
[root@ubuntu2004 ~]#cp /usr/local/keepalived/etc/keepalived/keepalived.conf.sample /etc/keepalived/ #拷贝模板文件
[root@ubuntu2004 ~]#ln -s /usr/local/keepalived/etc/sysconfig//keepalived /etc/default/keealived #链接启动参数文件

[root@ubuntu2004 ~]#ln -s  /usr/local/keepalived/sbin/keepalived* /usr/sbin/keepalived #链接启动参数文件

(7).配置service文件

[root@ubuntu2004 ~]#cat /lib/systemd/system/keepalived.service
[Unit]
Description=Keepalive Daemon (LVS and VRRP)
After=network-online.target
Wants=network-online.target
# Only start if there is a configuration file
ConditionFileNotEmpty=/etc/keepalived/keepalived.conf
 
[Service]
Type=simple
# Read configuration variable file if it is present
EnvironmentFile=-/etc/default/keepalived
ExecStart=/usr/sbin/keepalived --dont-fork $DAEMON_ARGS
ExecReload=/bin/kill -HUP $MAINPID
 
[Install]
WantedBy=multi-user.target

(8).修改配置文件

• 主
  vi /etc/keepalived/keepalived.conf

! Configuration File for keepalived
global_defs {
}

vrrp_instance VI_1 {
    state MASTER
    interface eth0
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        10.2.32.206/24
    }
}
}

• 备
  vi /etc/keepalived/keepalived.conf

! Configuration File for keepalived

global_defs {
}

vrrp_instance VI_1 {
    state BACKUP
    interface eth0
    virtual_router_id 51
    priority 99
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        10.2.32.206/24
    }
}
}

(9).启动服务

[root@ubuntu2004 ~]#systemctl daemon-reload
[root@ubuntu2004 ~]#systemctl enable --now keepalived.service
Created symlink /etc/systemd/system/multi-user.target.wants/keepalived.service → /lib/systemd/system/keepalived.service.
[root@ubuntu2004 ~]#systemctl status keepalived.service
● keepalived.service - Keepalive Daemon (LVS and VRRP)
     Loaded: loaded (/lib/systemd/system/keepalived.service; enabled; vendor preset: enab>
     Active: active (running) since Tue 2022-03-15 13:22:16 CST; 9s ago
    Process: 73238 ExecStart=/data/apps/keepalived/sbin/keepalived $KEEPALIVED_OPITONS (c>
   Main PID: 73255 (keepalived)
      Tasks: 3 (limit: 1037)
     Memory: 3.6M
     CGroup: /system.slice/keepalived.service
             ├─73255 /data/apps/keepalived/sbin/keepalived
             ├─73256 /data/apps/keepalived/sbin/keepalived
             └─73257 /data/apps/keepalived/sbin/keepalived

2.keepalived yum安装【Centos】

(1).通过yum安装

yum install -y keepalived
yum install –y ipvsadm

(2).修改配置文件

• 主
  vi /etc/keepalived/keepalived.conf

! Configuration File for keepalived
global_defs {
}

vrrp_instance VI_1 {
    state MASTER
    interface eth0
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        10.2.32.206/24
    }
}
}

• 备
  vi /etc/keepalived/keepalived.conf

! Configuration File for keepalived

global_defs {
}

vrrp_instance VI_1 {
    state BACKUP
    interface eth0
    virtual_router_id 51
    priority 99
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        10.2.32.206/24
    }
}
}