keepalived 安裝與配置

keepalived錯誤 請到此處

本文為 “haproxy keepalived 一鍵安裝包” 的 第二篇,主要講解 keepalived 的安裝與配置！

第一篇 haproxy 安裝與配置

第二篇 keepalived 安裝與配置

第三篇 haproxy keepalived 一鍵安裝包(keepalived 為haproxy 做 HA 高可用）

第四篇 haproxy keepalived “一鍵安裝包” 配置與測試HOWTO

下面開始：

1 keepalived 安裝需要的文件！！！

keepalived.conf #配置文檔,將被keepalived_install.sh 腳本調用

keepalived_install.sh #安裝腳本,有三個參數;推薦 backup 與 backup-2

sh keepalived_install.sh  
Usage: keepalived_install.sh {master|backup|backup-2} 
master   安裝類型為: master模式 
backup   安裝類型為: backup 模式(優先順序為 150；  有nopreempt 參數)     
backup-2 安裝類型為: backup 模式(優先順序為 100；  沒有nopreempt 參數)
    
                          

keepalived.sh #keepalived 服務腳本 ,功能 啟動 關閉

keepalived*.tar.gz #keepalived 源碼包

2 keepalived.conf 配置文檔解釋

#全局配置
global_defs {                           #全局定義
notification_email {                    #通知郵件
root@localhost                          #
} 
notification_mail_form root@localhost 
smtp_server 127.0.0.1 
smtp_connect_timeout 30 
 
router_id haproxy                       #keepalived 機器標識
} 
 
#vrrpd配置
vrrp_sync_group VG1 {                   #vrrp同步組定義              
 
group { 
VI_1                                    #vrrp實例 VI_1
} 
 
} 
 
 
vrrp_instance VI_1 {                    #vrrp實例定義
state BACKUP                            #實例初始化狀態,還可以是master!
nopreempt                               #不搶佔,用於state 狀態中,而且優先順序要高於第二個backup
    
                         
interface eth0                          #實例綁定的網卡
 
track_interface {                       #設定額外監控的網卡,以下任意網卡故障,狀態fault
eth0 
eth1 
} 
 
virtual_router_id 51                    #虛擬路由id（0-255）
priority 150                            #優先順序,高優先順序的將競選為 MASTER
advert_int 1                            #檢查間隔,默認1s
 
authentication { 
auth_type PASS                          #認證方式,pass
auth_pass 1111                          #認證密碼
} 
 
 
virtual_ipaddress {                     #虛擬ip地址(vip 可以為多個)
10.0.1.250/24 dev eth0 scope global     #虛擬ip地址 綁定在 eth0 網卡
} 
 
} 

3 啟動 keepalived 日誌

Dec 11 09:35:09 four Keepalived: Starting Keepalived v1.2.2 (12/10,2011)  
Dec 11 09:35:09 four Keepalived_vrrp: Registering Kernel netlink reflector 
Dec 11 09:35:09 four Keepalived_vrrp: Registering Kernel netlink command channel 
Dec 11 09:35:09 four Keepalived_vrrp: Registering gratutious ARP shared channel 
    
                         
Dec 11 09:35:09 four Keepalived: Starting VRRP child process, pid=3607 
Dec 11 09:35:49 four Keepalived_vrrp: Opening file '/usr/local/keepalived/keepalived.conf'.  
Dec 11 09:35:49 four Keepalived_vrrp: Configuration is using : 64151 Bytes 
Dec 11 09:35:49 four Keepalived_vrrp: Using LinkWatch kernel netlink reflector... 
Dec 11 09:35:49 four Keepalived_vrrp: VRRP_Instance(VI_1) Entering BACKUP STATE 

4 vrrp包,vrid 51 ,10.0.1.251 發送vrrp包到 組播地址,224.0.0.18

tcpdump -vv vrrp 
 
20:42:20.703999 IP (tos 0x0, ttl 255, id 8414, offset 0, flags [none], proto: VRRP (112), length: 40) 10.0.1.251 > 224.0.0.18: VRRPv2, Advertisement, vrid 51, prio 150, authtype simple, intvl 1s, length 20, addrs: 10.0.1.250 auth "1111^@^@^@^@" 
20:42:21.707222 IP (tos 0x0, ttl 255, id 8415, offset 0, flags [none], proto: VRRP (112), length: 40) 10.0.1.251 > 224.0.0.18: VRRPv2, Advertisement, vrid 51, prio 150, authtype simple, intvl 1s, length 20, addrs: 10.0.1.250 auth "1111^@^@^@^@" 
20:42:22.702427 IP (tos 0x0, ttl 255, id 8416, offset 0, flags [none], proto: VRRP (112), length: 40) 10.0.1.251 > 224.0.0.18: VRRPv2, Advertisement, vrid 51, prio 150, authtype simple, intvl 1s, length 20, addrs: 10.0.1.250 auth "1111^@^@^@^@" 
20:42:23.704223 IP (tos 0x0, ttl 255, id 8417, offset 0, flags [none], proto: VRRP (112), length: 40) 10.0.1.251 
    
                         > 224.0.0.18: VRRPv2, Advertisement, vrid 51, prio 150, authtype simple, intvl 1s, length 20, addrs: 10.0.1.250 auth "1111^@^@^@^@" 
20:42:24.706683 IP (tos 0x0, ttl 255, id 8418, offset 0, flags [none], proto: VRRP (112), length: 40) 10.0.1.251 > 224.0.0.18: VRRPv2, Advertisement, vrid 51, prio 150, authtype simple, intvl 1s, length 20, addrs: 10.0.1.250 auth "1111^@^@^@^@" 
20:42:25.718362 IP (tos 0x0, ttl 255, id 8419, offset 0, flags [none], proto: VRRP (112), length: 40) 10.0.1.251 > 224.0.0.18: VRRPv2, Advertisement, vrid 51, prio 150, authtype simple, intvl 1s, length 20, addrs: 10.0.1.250 auth "1111^@^@^@^@" 
20:42:26.719005 IP (tos 0x0, ttl 255, id 8420, offset 0, flags [none], proto: VRRP (112), length: 40) 10.0.1.251 > 224.0.0.18: VRRPv2, Advertisement, vrid 51, prio 150, authtype simple, intvl 1s, length 20, addrs: 10.0.1.250 auth "1111^@^@^@^@" 

結束

shell 腳本如有bug ,歡迎反饋！