This article describes how to restore a Controller to default settings. It can be if for some reason the CMON DB has been corrupted and you quickly want to get it up again.
Pre-requisites:
- a deployment package
- the controller server is reachable by ssh
Process:
There are 11 steps to restore the controller:
In this example our deployment package is located in /root/s9s-galera-percona-2.4.0
1. make sure the cc mysql server is stopped
2. cp -rf <MYSQL_DATADIR>/mysql <MYSQL_DATADIR>/mysql-bak
3. rm -rf <MYSQL_DATADIR>/cmon
4. rm -rf <MYSQL_DATADIR>/dcps
5. rm -rf <MYSQL_DATADIR>/ib*
6. Start the mysql server and make sure it is started:
service mysql start
mysql -ucmon -p -h127.0.0.1
Go into your deployment package, e.g:
6. cd s9s-galera-percona-2.4.0/mysql/scripts/install
7. ./install-cmon.sh -s
8. service cmon restart
9. cat s9s-galera-percona-2.4.0/mysql/scripts/install/.s9s/config |grep token
10. Register the UI:
https://<CC IP ADDR>/cmonapi/
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