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kvinod
kvinod
Gold ⭐️
August 28, 2019
Solved

CMS is down and cant able to get back that services

Hello Team,

 

All of sudden service monitor was went down and when i checked the logs i can see connection refused error in logs.

I have tried to restart all the CMS services and this time all went down.

What i was did is i have deleted CMS and trying to re-add the CMS to cloudera manager,

This time i am not able to add the CMS and when i am trying to adding it active monitor and reports manager cant able to find databases and DB's in test connection stage.

Can some one please respond ASAP and it would be greatfull.

 

Thanks,

Vinod

 

 

kvinod
kvinodAnswer
Gold ⭐️
September 12, 2019

Hello Team,

 

Sorry for late response, I have created external metastore using MySql and make them up. Now my cluster is looking good.

 

Thanks Team for your efforts .

 

Best Regards,

Vinod

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16 replies

Shelton
Shelton
Gold ⭐️⭐️⭐️
August 28, 2019

@kvinod 

In such a case, you should attach the logs because that's the only source we can use to investigate and get tips of maybe what happened.

How long have you cluster been running before going down? Did you ever purge the CMS database?  On large deployments, it's a good strategy to put the monitor roles on their own hosts and isolation.

Now that you have deleted the CMS hence lost the data therein you can safely create a new backend database and point the new config to that instance.

DB's to recreate

  • Reports Manager 
  • Activity Monitor

Please revert

 

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kvinod
kvinodAuthor
Gold ⭐️
August 28, 2019

Hi Shelton,

 

Thanks for responding.

Actually after deleting the CMS i am not finding the logs to attach, And as you suggested i have already created and trying to test the connections using those credentials.

But i am getting error and you can see it in screen shot.

The same server db also runningCMS_Error_wizard.PNG

Can i install my sql and create a DB and user and can i update them here ?

Was it work for me ?

Please suggest me with your valuable comments.

 

Best Regards,

Vinod

 

 

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bgooley
Gold ⭐️
bgooley
Gold ⭐️
August 28, 2019

@kvinod,

 

The "No database server found running" indicates that your postgres server is either not running on the host you specified or is running on another host.  If you don't know where your database server is or it is missing, make sure you know if you installed and configured your own database or if you are using the "embedded" database from Cloudera that is intended for Proof of Concept installs.

 

If you need to set up your databases again, you can use this:

 

https://www.cloudera.com/documentation/enterprise/latest/topics/cm_ig_extrnl_pstgrs.html

 

After preparing the database, you can retry the install.

 

NOTE:  If you are *not* using MapReduce1 then you do not need Activity Monitor as it does not capture MR2/YARN.  If you are only using YARN for your Map Reduce, then this is a good time to get rid of Activity Monitor.

 

 

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