[ClusterLabs] how to properly add/delete qdevice for an existing cluster

[Sherrard Burton]

On 4/8/20 5:13 AM, Jan Friesse wrote:
>> please forgive me if i have overlooked the answer somewhere.
>>
>> i have an existing cluster that is already configured with a qdevice. 
>> i now wish to update that configuration to point at a different qdevice.
>>
>> background:
>> for the sake of working through the initial configuration details, 
>> tuning, etc, i initially spun up a qdevice that lives on the same VM 
>> host as one of the member nodes. obviously this is not robust enough 
>> for production setup, so i have created a new qdevice elsewhere. now i 
>> want to update the existing cluster to point at the new qdevice. 
>> re-running corosync-qdevice-net-certutil results in:
>>
>> Node <NODE1> seems to be already initialized. Please delete 
>> /etc/corosync/qdevice/net/nssdb
>>
>>
>> obviously, i could (and possibly must) muck around in 
>> /etc/corosync/qdevice/net/nssdb, but i thought i would ask on-list, 
>> for the benefit of future googlers, whether there is a proper way to 
>> manage the qdevice without blowing away the existing configuration and 
>> re-initializing.
> 
> You mean different qnetd? If so, then it is enough to update nodes 
> config to point to new IP and copy /etc/corosync/qnetd directory to new 
> qnetd server and make sure to chown directory to coroqnetd:coroqnetd 
> user:group (this gets created dynamically on installation so uid/gid may 
> differ between machines).

yes, a different qnetd server. i will give that a go.

thanks

> 
> Regards,
>    Honza
> 
>>
>> TIA
>> _______________________________________________
>> Manage your subscription:
>> https://lists.clusterlabs.org/mailman/listinfo/users
>>
>> ClusterLabs home: https://www.clusterlabs.org/
>>
>