Keepalved hot standby

I,Keepalived installation and Service Control (installed on the master server and backup server)
1) install the supporting software
Before compilation, you must install the kernel development kit kernel-devel openssl-devel popt-devel kernel SADM.
[Root @ localhost ~] # Yum-y install kernel-devel openssl-devel popt-devel
[Root @ localhost ~] # Rpm-ivh/misc/cd/Server/Packages/ipvsadm-1.25-9.e16.i686.rpm
2) Compile and install keepalived
[Root @ localhost ~] # Tar zxf keepalived-1.2.2.tar.gz
[Root @ localhost ~] # Cd keepalived-1.2.2
[Root @ localhost ~] #./Configure -- prefix =/-- with-kernel-dir =/usr/src/kernels/2.6.32-131
. 0.15.e16.i686
[Root @ localhost ~] # Make & make install
3) use the keepalived Service
[Root @ localhost ~] # Ls-l/etc/init. d/keepalived
-Rwxr-xr-x 1 root 1288 November 8 16.23/etc/init. d/keepalived
[Root @ localhost ~] # Chkconfig -- add keepalived
[Root @ localhost ~] # Chkconfig keepalived on

Ii. Use keepalived for hot standby

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1) master server configuration
[Root @ localhost ~] # Cd/etc/keepalived/
[Root @ localhost ~] # Cp keepalived. conf keepalived. conf. bak
[Root @ localhost ~] # Vim keepalived. conf
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[Root @ localhost ~] # Service keepalived start
[Root @ localhost ~] # Ip addr show dev eth0 // view floating address
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2) Backup Server Configuration

Note: vrorouname route_ip): We recommend that you specify different names for each server involved in hot backup.

Hot Standby state): there should be at least one MASTER server, set the state to MASTER; there can be multiple slave

Server, set the status to BACKUP

Priority): a greater value indicates a higher priority for obtaining control over the VIP.

The level should be set to the highest;

# When configuring the backup server, you only need to modify the vro name, hot standby status, and priority.

[Root @ localhost ~] # Cd/etc/keepalived/

[Root @ localhost ~] # Cp keepalived. conf keepalived. conf. bak
[Root @ localhost ~] # Vim keepalived. conf

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[Root @ localhost ~] # Service keepalived start
[Root @ localhost ~] # Ip addr show dev eth0 // the backup server cannot see the floating address,