[jira] [Updated] (AMBARI-21868) Implement host recovery - backend changes

["Eugene Chekanskiy (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AMBARI-21868?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eugene Chekanskiy updated AMBARI-21868:
---------------------------------------
    Summary: Implement host recovery - backend changes  (was: Allow state transition from INSTALLED to INIT for host recovery)

> Implement host recovery - backend changes
> -----------------------------------------
>
>                 Key: AMBARI-21868
>                 URL: https://issues.apache.org/jira/browse/AMBARI-21868
>             Project: Ambari
>          Issue Type: Task
>          Components: ambari-server
>    Affects Versions: 2.6.0
>            Reporter: Dmytro Sen
>            Assignee: Eugene Chekanskiy
>            Priority: Blocker
>             Fix For: 2.6.0
>
>         Attachments: AMBARI-21868_2.patch, AMBARI-21868.patch, AMBARI-21868.patch
>
>
> *Problem Statement*:
> Allow user to bring back a host/VM that is dead with the same hostname and allow an action to recover the state of the host to what it was before the incident
> *Solution*:
> - User gets the host/VM back with same hostname (different IP address is ok)
> - The UI state would be INSTALLED for all host components as soon as the host starts heart beating
> - User will initiate a Recover user action that will do the following (batch operation):
> -- Move the state of the components back to INIT (allow this state transition)
> {code}
> curl -H "X-Requested-By:ambari" -u admin:admin -i -X PUT -d {"RequestInfo":{"context":"Reset All Host Components","operation_level":{"level":"HOST","cluster_name":"c1","host_names":"c6401.ambari.apahe.org"},"query":"HostRoles/component_name.in(DATANODE,NODEMANAGER,METRICS_MONITOR)"},"Body":{"HostRoles":{"state":"INIT"}}} http://c6401.ambari.apache.org:8080/api/v1/clusters/c1/hosts/c6401.ambari.apache.org/host_components
> {code}
> -- Issue an INSTALL operation on all hostcomponents (Same call as above with state = "INSTALLED")
> -- Issue a START operation on all hostcomponents (Same call as above with state = "STARTED")
> *Note*: The above operation is expected to recover the security state of the host.



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