heartbeat之part2
部署高可用
业务需求描述
假设有两台服务器data-1-1/data-1-2 其实际ip分别为192.168.0.107和192.168.0.108（data-1-2），
配置目标，要求heartbeat服务启动后，data-1-1初始启动vip192.168.0.07，data-1-2初始启动vip192.168.0.08.
一旦任意一台服务器宕机，在宕机的机器上初始启动的虚拟vip就会切换到运转正常的机器上，实现了ip资源的
自动接管，从而达到高可用的目的
环境里的虚拟机双网卡桥接
[root@localhost ~]# setup空格切换
-->network configuration-->device configuration
eth0
Name eth0________________ │
│ Device eth0________________ │
│ Use DHCP [ ] │
│ Static IP 192.168.0.107____________ │
│ Netmask 255.255.255_________ │
│ Default gateway IP 10.0.0.254__________ │
│ Primary DNS Server ____________________ │
│ Secondary DNS Server _____________
eth1
Name eth1________________ │
│ Device eth1________________ │
│ Use DHCP [ ] │
│ Static IP 192.168.1.107___________ │
│ Netmask 255.255.255.0_______ │
│ Default gateway IP ____________________ │
│ Primary DNS Server ____________________ │
│ Secondary DNS Server ____________________
[root@localhost ~]# /etc/init.d/network restart
Shutting down interface eth0: Device state: 3 (disconnected)
[ OK ]
Shutting down interface eth1: [ OK ]
Shutting down loopback interface: [ OK ]
Bringing up loopback interface: [ OK ]
Bringing up interface eth0: Active connection state: activating
Active connection path: /org/freedesktop/NetworkManager/ActiveConnection/1
state: activated
Connection activated
[ OK ]
data-1-2
[root@localhost ~]# setup
-->network configuration-->device configuration
eth0
Name eth0________________ │
│ Device eth0________________ │
│ Use DHCP [ ] │
│ Static IP 192.168.0.108___________ │
│ Netmask 255.255.255.0_______ │
│ Default gateway IP 10.0.0.254__________ │
│ Primary DNS Server ____________________ │
│ Secondary DNS Server ____________________
Name eth1________________ │
eth1
│ Device eth1________________ │
│ Use DHCP [ ] │
│ Static IP 192.168.1.108___________ │
│ Netmask 255.255.255.0______
若出现Bringing up interface eth0: Error: Unknown connection: cfae0b8b-6a2e-4df8-a009-9c6570ca906d.
[FAILED]
那么
[root@localhost ~]# chkconfig NetworkManager off
[root@localhost ~]# service NetworkManager stop
分别配置主机名与hosts
[data-1-1]
[root@localhost ~]# hostname data-1-1
[root@localhost etc]# vi /etc/sysconfig/network
HOSTNAME=data-1-1
[root@localhost etc]# cd /etc
[root@localhost etc]# cp hosts hosts_bak
[root@localhost etc]#vi hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.0.107 data-1-1
192.168.88.108 data-1-2
[root@data-1-1 ~]# tail -2 /etc/hosts
192.168.0.107 data-1-1
192.168.0.108 data-1-2
[root@data-1-1 ~]# uname -n
data-1-1
[data-1-2]
[root@localhost ~]# hostname data-1-2
[root@localhost etc]# vi /etc/sysconfig/network
HOSTNAME=data-1-2
[root@localhost etc]# cd /etc
[root@localhost etc]# cp hosts hosts_bak
[root@localhost etc]#vi hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.0.107 data-1-1
192.168.0.108 data-1-2
[root@data-1-2 ~]# tail -2 /etc/hosts
192.168.0.107 data-1-1
192.168.0.108 data-1-2
[root@data-1-2 ~]# uname -n
data-1-2
[root@data-1-1 ~]# ifconfig eth1[若ip为broadcast]就 ifup eth1；同理data-1-2
eth1 Link encap:Ethernet HWaddr 00:0C:29:34:72:3F
inet addr:192.168.1.107 Bcast:10.0.10.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe34:723f/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:7 errors:0 dropped:0 overruns:0 frame:0
TX packets:24 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:801 (801.0 b) TX bytes:1440 (1.4 KiB)
Interrupt:16 Base address:0x2024
添加主机路由
[data-1-1]
[root@data-1-1 ~]# route add -host 192.168.1.108 dev eth1 [/sbin/route add -host 192.168.1.108 dev eth1]
[root@data-1-1 ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.1.108 0.0.0.0 255.255.255.255 UH 0 0 0 eth1已经配置好了
10.0.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
10.0.10.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
169.254.0.0 0.0.0.0 255.255.0.0 U 1002 0 0 eth1
169.254.0.0 0.0.0.0 255.255.0.0 U 1003 0 0 eth0
0.0.0.0 10.0.0.254 0.0.0.0 UG 0 0 0 eth0
echo '/sbin/route add -host 192.168.1.108 dev eth1' >>/etc/rc.local永久生效
[data-1-2]
[root@data-1-2 ~]# route add -host 192.168.1.107 dev eth1 [/sbin/route add -host 192.168.1.107 dev eth1]
[root@data-1-2 ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.1.107 0.0.0.0 255.255.255.255 UH 0 0 0 eth1
10.0.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
10.0.10.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
169.254.0.0 0.0.0.0 255.255.0.0 U 1002 0 0 eth1
169.254.0.0 0.0.0.0 255.255.0.0 U 1003 0 0 eth0
0.0.0.0 10.0.0.254 0.0.0.0 UG 0 0 0 eth0
echo '/sbin/route add -host 192.168.1.107 dev eth1' >>/etc/rc.local
[root@data-1-2 ~]#
安装heart beat软件