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Juanes
Juanes
Gold ⭐️
February 15, 2022
Solved

Manage Kudu from command line when CM is down

Hello,

i'm using a small 3Master+3workers cluster [Cloudera Manager 7.3.1 (Runtime 7.1.6)]

Postgresql HA configured (not embedded)

The thing is that I need to restart a tablet server if hte CM host is down, and obviously I can't do it using the CM.

is there any way to restart these Kudu tablet servers without CM?

NOTE: I've already tried sudo service kudu-tserver stop

but

Failed to stop kudu-tserver.service: Unit kudu-tserver.service not loaded.

Juanes
JuanesAnswer
Gold ⭐️
August 24, 2022

I'm finally using the binaries in the parcel dir:

# sudo -u kudu /opt/cloudera/parcels/CDH-7.1.6-1.cdh7.1.6.p0.10506313/bin/kudu master list Master1,Master2,Master3

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4 replies

aakulov
Platinum ⭐️
aakulov
Platinum ⭐️
February 15, 2022

Hi @Juanes,

 

The command you shared should work, given that kudu-tserver process is actually running on the host. Can you list all processes and grep for "kudu" on that host? 

 

For more information see this documentation page on starting kudu on the host. 

 

If this helps, please accept as a solution.

Regards,

Alex

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Juanes
JuanesAuthor
Gold ⭐️
February 16, 2022

Good morning and thanks for your help,

I already read this page but the command wasn't loaded as systemctl proccess:

# sudo service kudu-tserver restart
Redirecting to /bin/systemctl restart kudu-tserver.service
Failed to restart kudu-tserver.service: Unit not found.

I checked the kudu-tablet proccess and it was executed from the /opt/parcel:

kudu 30973 30965 99 07:47 ? 00:05:51 /opt/cloudera/parcels/CDH-7.1.6-1.cdh7.1.6.p0.10506313/lib/kudu/sbin/kudu-tserver --tserver_master_addrs=master1,master2,master3 --flagfile=/var/run/cloudera-scm-agent/process/1546342994-kudu-KUDU_TSERVER/gflagfile

 

I tried as well executing this kudu-tserver but it doesn't work:

# sudo /opt/cloudera/parcels/CDH-7.1.6-1.cdh7.1.6.p0.10506313/lib/kudu/sbin/kudu-tserver stop
usage: /opt/cloudera/parcels/CDH-7.1.6-1.cdh7.1.6.p0.10506313/lib/kudu/sbin/kudu-tserver

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Juanes
JuanesAuthorAnswer
Gold ⭐️
August 24, 2022

I'm finally using the binaries in the parcel dir:

# sudo -u kudu /opt/cloudera/parcels/CDH-7.1.6-1.cdh7.1.6.p0.10506313/bin/kudu master list Master1,Master2,Master3

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