Re: [ClusterLabs] Announcing the first ClusterLabs video karaoke contest!

2018-04-01 Thread Digimer 
On 2018-04-01 05:30 PM, Ken Gaillot wrote:
> In honor of the recent 10th anniversary of the first public release of
> Pacemaker, ClusterLabs is proud to announce its first video karaoke
> contest!
> 
> To participate, simply record video of yourself singing karaoke to this
> tune:
> 
>   https://www.youtube.com/watch?v=r7TADGV2fLI
> 
> using these lyrics:
> 
>   Sometimes it's hard to be a sysop
>   Running all your jobs on just one host.
>   You'll have bad times
>   And it'll have downtimes,
>   Doin' things that you don't understand.
>   But if you need it, you'll cluster it,
>   even though logs are hard to understand.
>   And if you built it, Oh be proud of it,
>   'Cause after all it's just a node.
>   Standby your node,
>   Because you want to upgrade
>   And watch your resource migrate.
>   Five nines are bold and lovely.
>   Standby your node,
>   And serve the world your resource.
>   Keep serving all the things you can.
>   Standby your node.
>   Standby your node,
>   And show the world your uptime.
>   Keep serving all the things you can.
>   Standby your node.
> 
> Users list members will vote on all submissions, and the winner will
> receive a COMPLETE SET of all available ClusterLabs swag!*

Ah crap, I'm already sobering up... Probably for the best; No known HA
cluster would survive my singing.

-- 
Digimer
Papers and Projects: https://alteeve.com/w/
"I am, somehow, less interested in the weight and convolutions of
Einstein’s brain than in the near certainty that people of equal talent
have lived and died in cotton fields and sweatshops." - Stephen Jay Gould
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[ClusterLabs] Announcing the first ClusterLabs video karaoke contest!

2018-04-01 Thread Ken Gaillot 
In honor of the recent 10th anniversary of the first public release of
Pacemaker, ClusterLabs is proud to announce its first video karaoke
contest!

To participate, simply record video of yourself singing karaoke to this
tune:

  https://www.youtube.com/watch?v=r7TADGV2fLI

using these lyrics:

  Sometimes it's hard to be a sysop
  Running all your jobs on just one host.
  You'll have bad times
  And it'll have downtimes,
  Doin' things that you don't understand.
  But if you need it, you'll cluster it,
  even though logs are hard to understand.
  And if you built it, Oh be proud of it,
  'Cause after all it's just a node.
  Standby your node,
  Because you want to upgrade
  And watch your resource migrate.
  Five nines are bold and lovely.
  Standby your node,
  And serve the world your resource.
  Keep serving all the things you can.
  Standby your node.
  Standby your node,
  And show the world your uptime.
  Keep serving all the things you can.
  Standby your node.

Users list members will vote on all submissions, and the winner will
receive a COMPLETE SET of all available ClusterLabs swag!*

-- 
Ken Gaillot 

* DISCLAIMERS: ClusterLabs currently has no available swag. Some
restrictions may apply. Not responsible for damaged or lost
submissions, unless you configured fencing. Your mileage may vary.
Offer valid only for submissions received by April Fools Day 2018.
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Re: [ClusterLabs] How to cancel a fencing request?

2018-04-01 Thread Andrei Borzenkov 
31.03.2018 23:29, Jehan-Guillaume de Rorthais пишет:
> Hi all,
> 
> I experienced a problem in a two node cluster. It has one FA per node and
> location constraints to avoid the node each of them are supposed to interrupt.
> 

If you mean stonith resource - for all I know location it does not
affect stonith operations and only changes where monitoring action is
performed. You can create two stonith resources and declare that each
can fence only single node, but that is not location constraint, it is
resource configuration. Showing your configuration would be helpflul to
avoid guessing.

> During some tests, a ms resource raised an error during the stop action on
> both nodes. So both nodes were supposed to be fenced.
> 

In two-node cluster you can set pcmk_delay_max so that both nodes do not
attempt fencing simultaneously.

> The first node did, but no FA was then able to fence the second one. So the
> node stayed DC and was reported as "UNCLEAN (online)".
> 
> We were able to fix the original ressource problem, but not to avoid the
> useless second node fencing.
> 
> My questions are:
> 
> 1. is it possible to cancel the fencing request > 2. is it possible reset the 
> node status to "online" ?
> 

Not that I'm aware of.
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