How to restore primary using slave node?

Restore primary using slave node

1) Login to the slave node (secondary node)

2) Promote the secondary as Master node by clicking

Web Panel -> Cluster -> "Make Master" (Ref: https://www.ezeelogin.com/user_manual/ConfigureCluster.html)

3) Then remove the other node by

Web Panel -> Cluster -> "Remove" button for "Other Node"

If you are unable to Remove, you can skip(3rd step) this step.

4) Install the same version of Ezeelogin on the new primary server

Download the same version of Ezeelogin package.

wget https://downloads.ezeelogin.com/ezlogin_7.x.x.bin

If the IP Address is different from old primary, migrate the license to new IP from Ezeelogin customer portal .It may display a warning message that the secondary node is having a primary license while installation, you can ignore the message.

5) Execute the following command on primary server(current master) to grant access to ezeelogin database from secondary/slave node

php /usr/local/ezlogin/grant_host.php <ip_address of secondary node/slave>

6) Execute the following command

sh ezlogin_7.x.x.bin -- -secondary <ip_address of secondary/slave node> -othernode <ip_address of master node>

7) Login into the web gui of the current secondary and click on the cluster tab and click make master, so that it becomes master again.

FAQ:

1. Can we disable the slave server since we are currently using only the master node?

Certainly, the choice to disable the slave server is yours, but keep a note that data synchronization between the master and slave servers will not occur if the slave is disabled. It is recommended to keep both servers running and synchronized for real-time data updates, as changes made to the master server will automatically sync with the slave server.