[AMBARI-25488] Host creation Wizard failed HTTP request

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.7.5
• Component/s: ambari-server, ambari-web

Environment

Standard installation from scratch.

Initial host was removed and now I am trying to recreate it. Thats where the error comes up.

SLES12, Ambari 2.7.5, based on this installation documentation: https://docs.cloudera.com/HDPDocuments/Ambari-2.7.5.0/bk_ambari-installation/content/ch_Getting_Ready.html

 

• Assignee: Unassigned
• Reporter: Jan
• Created: 28/Feb/20 12:30
• Updated: 28/Feb/20 15:36

Description

When creating a new host with the "Add Host Wizard", I get an empty screen on the Slave / Client selection screen:

I then noticed this is due to an error 400 to the API:

URL: http://host:8080/api/v1/stacks/HDP/versions/2.6/validations

Request Body:

 

{"hosts":["host"],"services":[],"validate":"host_groups","recommendations":{"blueprint":{"host_groups":[{"name":"host-group-1","components":[{"name":"JOURNALNODE"},{"name":"ZKFC"},{"name":"GANGLIA_MONITOR"},{"name":"METRICS_MONITOR"},{"name":"LOGSEARCH_LOGFEEDER"},{"name":"HST_AGENT"},{"name":"KERBEROS_CLIENT"}]}]},"blueprint_cluster_binding":{"host_groups":[{"name":"host-group-1","hosts":[{"fqdn":"host"}]}]}}}

(replaced the actual host by "host")

Status Code: 400, Bad Request

Response Body:

Request body is not correct, error: java.util.LinkedHashSet cannot be cast to java.util.List

I guess the json request created seems to be unexpected by the server.