linux安裝keepalived-2.0.20.tar.gz

參考：https://www.cnblogs.com/Dev0ps/p/11122500.html

參考：https://blog.csdn.net/weixin_30377461/article/details/96655003

一、yum安裝相關依賴

1. gcc 安裝
安裝 nginx 需要先將官網下載的源碼進行編譯，編譯依賴 gcc 環境，如果沒有 gcc 環境，則需要安裝：

yum install gcc-c++

2. OpenSSL 安裝

yum install -y openssl openssl-devel

 

二、解壓編譯安裝

下載keepalived：https://www.keepalived.org/download.html

解壓，編譯

# 解壓
tar -xzvf keepalived-2.0.16.tar.gz

cd keepalived-2.0.16
 
# 執行配置，指定路徑
./configure --prefix=/usr/local/keepalived
# 編譯
make && make install

 

拷貝相關文件到指定目錄

# 拷貝源碼中的keepalived-2.0.20/keepalived/etc/init.d/keepalived 到 /etc/init.d/
cp /usr/local/keepalived-2.0.20/keepalived/etc/init.d/keepalived /etc/init.d/

# 拷貝編譯後的keepalived/etc/sysconfig/keepalived 到 /etc/sysconfig/
cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/

# 創建文件夾
mkdir /etc/keepalived

# 把配置文件移到文件夾中
cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/

# 把執行文件移動到/usr/sbin/
cp /usr/local/keepalived/sbin/keepalived /usr/sbin/

 

三、修改配置文件

節點1

! Configuration File for keepalived

global_defs {
    router_id node1 #標識
}

vrrp_instance VI_1 {
    state BACKUP           #角色是backup
    interface eth0         #當前使用的網卡
    virtual_router_id 51   #讓master 和backup在同一個虛擬路由裏，id 號必須相同
    priority 90            #優先級,因爲我這裏兩個都是backup，不希望故障節點恢復後重新獲取vip，優先級設置成一樣
    advert_int 1           #心跳間隔時間
    authentication {
        auth_type PASS     #認證
        auth_pass shucai   #密碼
    }
    virtual_ipaddress {
        172.16.70.126      #虛擬ip
    }
}

節點2

! Configuration File for keepalived

global_defs {
    router_id node2 #標識
}

vrrp_instance VI_1 {
    state BACKUP           #角色是backup
    interface eth0         #當前使用的網卡
    virtual_router_id 51   #讓master 和backup在同一個虛擬路由裏，id 號必須相同
    priority 90            #優先級,因爲我這裏兩個都是backup，不希望故障節點恢復後重新獲取vip，優先級設置成一樣
    advert_int 1           #心跳間隔時間
    authentication {
        auth_type PASS     #認證
        auth_pass shucai   #密碼
    }
    virtual_ipaddress {
        172.16.70.126      #虛擬ip
    }
}

 

四、啓動服務

systemctl start keepalived


systemctl enable keepalived

 

五、測試ip漂移

關閉其中一個節點的服務器測試ip漂移

ip a | grep 172.16.70.126

返回

inet 172.16.70.126/32 scope global eth0