keepalived错误 请到此处
本文为 “haproxy + keepalived 一键安装包” 的 第二篇,主要讲解 keepalived 的安装与配置！
第二篇 keepalived 安装与配置
第三篇 haproxy + keepalived 一键安装包(keepalived 为haproxy 做 HA 高可用）
第四篇 haproxy + keepalived “一键安装包” 配置与测试HOWTO
下面开始：
1 keepalived 安装需要的文件！！！
keepalived.conf #配置文档，将被keepalived_install.sh 脚本调用
keepalived_install.sh #安装脚本，有三个参数;推荐 backup 与 backup-2
- sh keepalived_install.sh
- Usage: keepalived_install.sh {master|backup|backup-2}
- master 安装类型为: master模式
- backup 安装类型为: backup 模式(优先级为 150； 有nopreempt 参数)
- backup-2 安装类型为: backup 模式(优先级为 100； 没有nopreempt 参数)
keepalived.sh #keepalived 服务脚本 ,功能 启动 关闭
keepalived*.tar.gz #keepalived 源码包
2 keepalived.conf 配置文档解释
- #全局配置
- global_defs { #全局定义
- notification_email { #通知邮件
- root@localhost #
- }
- notification_mail_form root@localhost
- smtp_server 127.0.0.1
- smtp_connect_timeout 30
- router_id haproxy #keepalived 机器标识
- }
- #vrrpd配置
- vrrp_sync_group VG1 { #vrrp同步组定义
- group {
- VI_1 #vrrp实例 VI_1
- }
- }
- vrrp_instance VI_1 { #vrrp实例定义
- state BACKUP #实例初始化状态，还可以是master!
- nopreempt #不抢占，用于state 状态中，而且优先级要高于第二个backup
- interface eth0 #实例绑定的网卡
- track_interface { #设定额外监控的网卡，以下任意网卡故障，状态fault
- eth0
- eth1
- }
- virtual_router_id 51 #虚拟路由id（0-255）
- priority 150 #优先级，高优先级的将竞选为 MASTER
- advert_int 1 #检查间隔，默认1s
- authentication {
- auth_type PASS #认证方式，pass
- auth_pass 1111 #认证密码
- }
- virtual_ipaddress { #虚拟ip地址(vip 可以为多个)
- 10.0.1.250/24 dev eth0 scope global #虚拟ip地址 绑定在 eth0 网卡
- }
- }
3 启动 keepalived 日志
- 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 发送vrrp包到 组播地址，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^@^@^@^@"
结束
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本文转自 dongnan 51CTO博客，原文链接：http://blog.51cto.com/dngood/740925
