keepalived注册服务

1、下载keepalived包：

执行命令：

wget http://www.keepalived.org/software/keepalived-1.2.18.tar.gz
这是一个不是很新的版本。centos上用就可以了。由于最后Ubuntu上出了好些问题，主要是搭完后keepalived启动之后，就停不了的问题，后来在网上找了一些帖子，他们都是用的keepalived的最新版本，我当时以为是版本问题，所以，最后在ubuntu搭建的时候选择的是最新版的keepalived（2.2.7）。地址如下：

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

当然也可以用命令直接下载，将上面wget地址的最后版本号改掉即可。

2、安装keepalived之前，需要先确保openssl等一些插件处于已安装状态。而且，ubuntu和centos所需插件名称还不一样，具体来说：

ubuntu需下载：

sudo apt-get install openssl
sudo apt-get install libssl-dev

centos需下载：

yum install -y openssl openssl-devel

3、安装

Ubuntu：

# 按照如下命令执行完

tar -xvf keepalived-2.2.7.tar.gz
cd keepalived-2.2.7/
./configure -prefix=/usr/local/keepalived --sysconf=/etc
make
sudo make install

然后添加软连接：

sudo ln -s /usr/local/keepalived/sbin/keepalived /usr/sbin/
sudo ln -s /usr/local/keepalived/etc/sysconfig/keepalived /etc/default/keepalived

# 采用systemd的方式添加到系统服务，执行如下命令，执行下面一整陀：

cd /etc/systemd/system
vim keepalived.service
[Unit]
Description=Keepalive Daemon (LVS and VRRP)
After=syslog.target network-online.target
Wants=network-online.target
# Only start if there is a configuration file
ConditionFileNotEmpty=/etc/keepalived/keepalived.conf

[Service]
Type=forking
KillMode=process
# Read configuration variable file if it is present
EnvironmentFile=-/etc/default/keepalived
ExecStart=/usr/sbin/keepalived $KEEPALIVED_OPTIONS
ExecReload=/bin/kill -HUP $MAINPID

[Install]
WantedBy=multi-user.target

wq!保存，完成后执行：

sudo systemctl daemon-reload
sudo systemctl enable keepalived
sudo systemctl start keepalived
sudo systemctl stop  keepalived

keepalived默认配置文件参考：

! Configuration File for keepalived
global_defs {
   router_id 123
}

vrrp_script check_apiserver {         
 script "/etc/keepalived/check-apiserver.sh"    #健康监测脚本路径
 interval 3
 weight -2
}

vrrp_instance VI_1 {
    state MASTER
    mcast_src_ip 192.168.10.130     #自己的ip，也可不设置
    interface ens33     # 监听的网卡
    virtual_router_id 51   # 虚拟路由编号，同一实例可以一致，但是其权重一定不能一致
    priority 100     # 权重，两个节点不能一样
    advert_int 1  # 用于设定MASTER与BACKUP主机之间同步检查的时间间隔，单位秒
    authentication {   # 用于设定节点间通信验证码类型和密码 ,主要类型有PASS和AH两种，在一个vrrp_instance下，MASTER和BACKUP必须使用相同的密码才能正常通信；
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.10.138        # 虚拟IP地址
    }
    track_script {
       check_apiserver     # 健康检查配置(调用上面的 check_apiserver )
   }
}

原文链接：https://blog.csdn.net/m0_46900715/article/details/130746498

keepalived注册服务

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