How to reinstall an ambari-agent in HDP cluster？

[#1 · Accepted solution]

That's easy, if you are on CentOS/RHEL

yum remove ambari-agent ... make sure it's gone: yum list ambari-agent
yum install ambari-agent

Before removal save the config file if needed, it's in /etc/ambari-agent/conf/ambari-agent.ini. By the way, you can upgrade it by "yum upgrade" after providing a new repo file in /etc/yum.repos.d

[#2]

There are already some service on that node before reinstall the agent,is that OK?

[#3]

Usually no problems, provided port 8670 is available for the agent to listen to, and iptables or a firewall etc is not blocking the agent to connect to Ambari server on ports 8080, 8440 and 8441. Also need Python-2.6.x.

[#4]

Ths,i'll have a try