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reinstall ambari or add existing HDP cluster in the new ambari

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Contributor

Hi all

I have a question if I it is possible install new ambari server and then add existing working HDP 2.6 cluster in it, in case if existing ambari is damaged or completely lost?

If it is possible then will it change or reset HDP services existing configurations?

Thank you

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@Shota Akhalaia, You can re-install/recover the ambari for a existing cluster only if you have the backup of ambari database. Otherwise there is no easy way to point existing cluster to existing HDP cluster. The only option is to install a fresh ambari along with fresh HDP.

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@Shota Akhalaia

If there was no Ambari Server installed already or if the Ambari DB is lost (corrupted / no backups) then Ambari Takeover is a process which can be used. But it completely depends on which kind of components you have installed and it is usually a tough process to setup Ambari over an existing HDP cluster.

But it can be achieved. Similar threads you can find here: https://community.hortonworks.com/questions/34197/can-ambari-manage-an-exists-hadoop-cluster-an-upda...

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https://community.hortonworks.com/questions/96817/monitoring-non-ambari-cluster-health-and-status.ht...

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Contributor

Thank you very much for reply such a great answers

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New Contributor

Hi Team,

I have same problem like @Shota Akhalaia in AWS ambari-server instance, Please suggest us how to avoid this in future and what are preventive measures should takeoff to avoid disaster.


Regards,

Tayyab