A batch of machines newly purchased by the company need to be moved to a third-party computer room after the company has installed the environment, and the IP address needs to be changed after arriving in the computer room, so I checked the relevant information on Baidu, and referred to a successful blog.
1. First close the cdh cluster and cloudera manager service.
2. Stop cloudera-scm-server.service and cloudera-scm-agent.service
systemctl stop cloudera-scm-server.service
systemctl stop cloudera-scm-server-db.service
All agents are to be stopped.
1.1 Login to mysql
mysql -u root -p
Enter password: 123456
1.2 Select the database
use cm;
1.3 View table information
select NAME,IP_ADDRESS,HOST_IDENTIFIER from HOSTS;
Modify information:
The next steps are the same as the postgresql above.
Operations under the postgresql database. https://my.oschina.net/u/3197158/blog/1786890