Keepalived monitors the process and automatically restarts the service process

One 、 Download keepalived1.2.2 edition

http://pan.baidu.com/s/1jI5c7EA

Two 、 Decompress first , Compress the contents of the package keepalived-1.2.2.tar.gz The package is uploaded to /home Under the catalogue , Execute in sequence as follows 4 Commands to Install compilation keepalived file

You need to load it first popt package , You can execute commands directly ：yum install popt-devel -y

1、 tar -zxvf keepalived-1.2.2.tar.gz

2、 cd /home/keepalived-1.2.2

3、 ./configure --prefix=/etc/keepalived-1.2.2 // Install and compile to Under this directory

4、 make && make install

3、 ... and 、 Install to system , The default startup script contains the system path , So you need to copy some files to the system directory

1、 cp /etc/keepalived-1.2.2/etc/rc.d/init.d/keepalived /etc/init.d/

2、 cp /etc/keepalived-1.2.2/sbin/keepalived /usr/sbin/

3、cp /etc/keepalived-1.2.2/sbin/keepalived /etc/keepalived-1.2.2/bin/

4、 cp /etc/keepalived-1.2.2/etc/sysconfig/keepalived /etc/sysconfig/

5、 mkdir -p /etc/keepalived

6、 Upload keepalived1.2.2.rar Inside check_haproxy.sh and keepalived.conf To   /etc/keepalived Catalog

Four 、 Start

keepalived start-up ：
/etc/init.d/keepalived start

keepalived stop it ：
/etc/init.d/keepalived stop

keepalived state ：

/etc/init.d/keepalived status

If the startup error , Execute this command to view the exception information ：systemctl status keepalived.service

Exceptions are as follows ：Starting keepalived: keepalived: error while loading shared libraries: libssl.so.1.1: cannot open shared object file: No such ...or directory

Default libssl.so.1.1(openssl Components ） Will be installed in /usr/local/lib64 below ; It needs to be placed to... Through a soft connection /usr/lib64 below ：

ln -s /usr/local/lib64/libssl.so.1.1 /usr/lib64/libssl.so.1.1 ln -s /usr/local/lib64/libcrypto.so.1.1 /usr/lib64/libcrypto.so.1.1

ln It's a soft link , Soft links represent moral and windows The shortcut to is very similar , Soft links are not connected to data blocks , It's just a symbol , Linked to a name of the real database ; The corresponding is hard link , Direct and block （node） Connected to a , Equivalent to an alias of a data block .

Restart and it will be normal , Other anomalies Baidu is looking for a solution