[AMBARI-13507] Ability to change host names for a stopped cluster

• Type: Task
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.2.0
• Fix Version/s: 2.2.0
• Component/s: ambari-server
• Assignee: Vitaly Brodetskyi
• Reporter: Vitaly Brodetskyi
• Created: 21/Oct/15 17:58
• Updated: 26/Dec/15 16:23
• Resolved: 27/Oct/15 11:34

Description

1) If Kerberos security is enabled, please disable it using Ambari Web > Admin > Kerberos > Disable Kerberos button.
2) Stop all pending commands/jobs.
3) Stop all services.
4) Backup Ambari db.
5) Stop ambari-server and all ambari-agents.
6) Create *.json file with host names changes. Example: host_names_changes.json

{
  "cluster1" : {
      "c6400.ambari.apache.org" : "c6410.ambari.apache.org",
      "c6401.ambari.apache.org" : "c6411.ambari.apache.org",
     ....
  }
}

where cluster1 is cluster name and "c6400.ambari.apache.org" : "c6410.ambari.apache.org" are host names pair in the format "current_host_name" : "new_host_name".
7) Execute this command on the ambari-server host:

ambari-server update-host-names host_names_changes.json

8) After successful end of this action, please update host names for all nodes, according to changes that you added to *.json file.
9) If host name was changed for node with ambari-server, then you should update it for every ambari-agent in /etc/ambari-agent/conf/ambari-agent.ini, field "hostname" for server.
10) Start ambari-server and all ambari-agents.
11) Start services.

Issue Links

• duplicates: AMBARI-14499 Wrong warning on ambari
• relates to: AMBARI-14410 It failed to change the host name from Upper to Lower case for the cluster
• links to: review request