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Ceph service


Tarmabal
4 Posts
July 13, 2017, 8:57 am

I would like to know how to manually start and stop ceph services like osd.

There is not ceph file in /etc/init.d/ so i cant use a service o manually start it.

 

I am trying to change jornal to a ram disk, so I need to be able to stop and start service, I know its not good to do this, due to ram is volatil but I want to test speed changes

Last edited on July 13, 2017, 9:03 am · #1

admin
2,930 Posts
July 13, 2017, 1:36 pm

Hi,

it is using systemd, the syntax is:

systemctl start ceph-mon@<monitor_hostname>

systemctl start ceph-osd@<OSD_number>

example:

systemctl start ceph-mon@ps-node-01

systemctl start ceph-osd@0

 

Note version 1.4 and 1,5 will bring performance improvements.

#2

philip.shannon
37 Posts
July 20, 2017, 7:07 pm

Will we be able to upgrade a petasan node from 1.3 to 1.4 without downtime? thanks

#3

admin
2,930 Posts
July 21, 2017, 11:33 am

It will be the same process as before using installer upgrade,  each node will require a reboot but the cluster will continue to function.

#4

philip.shannon
37 Posts
July 21, 2017, 11:46 am

Thanks for the info, I've never upgraded before and look forward to checking out v 1.4

#5