Use docker to create mysql service in master and slave mode with keepalived as HA.
We create mysql service in docker and let it work in master-slave mode to sync database with each other. to keep HA, we use keepalived which works as docker also.
To deploy mysql service, we suggest to prepare two nodes. one is used to deploy mysql-master service, another is used to deployed msyql-slave.
To use the script, please install mysql-master firstly, then install mysql-slave, please follow the steps below:
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copy the config and mysql-master.sh files to mysql-master host node. and specify one VIP to substitute the value of env variable VIP in the mysql-master.sh file according your deployment env as well as the variable INTERFACE. and then run it.
bash ./mysql-master.sh
if you see the log [OK]: master deploy finished, it means mysql-master service deployed successfully.
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copy the config and mysql-slave.sh files to mysql-slave host node. also, we should specify the same VIP and INTERFACE in mysql-slave.sh as in mysql-master.sh. please note that we should specify the mysql-master host IP, then run it.
bash ./mysql-slave.sh
if you see the log [OK]: slave deploy finished, it means mysql-slave service deployed successfully.
Now you get a mysql worked in master-slave mode. congratulations!!!
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we can stop keepalived or mysql-master service, it will demoted mysqld in mysql-master host, and VIP shifts it to mysql-slave.
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we can
telnet VIP:13388to use mysql in your workstation.