Re: [ClusterLabs] pacemaker-remote

2023-09-18 Thread Ken Gaillot
On Thu, 2023-09-14 at 18:28 +0800, Mr.R via Users wrote: > Hi all, > > In Pacemaker-Remote 2.1.6, the pacemaker package is required > for guest nodes and not for remote nodes. Why is that? What does > pacemaker do? > After adding guest node, pacemaker package does not seem to be > needed.

Re: [ClusterLabs] Limit the number of resources starting/stoping in parallel possible?

2023-09-18 Thread Ken Gaillot
On Mon, 2023-09-18 at 14:24 +, Knauf Steffen wrote: > Hi, > > we have multiple Cluster (2 node + quorum setup) with more then 100 > Resources ( 10 x VIP + 90 Microservices) per Node. > If the Resources are stopped/started at the same time the Server is > under heavy load, which may result

Re: [ClusterLabs] Limit the number of resources starting/stoping in parallel possible?

2023-09-18 Thread Antony Stone
On Monday 18 September 2023 at 16:24:02, Knauf Steffen wrote: > Hi, > > we have multiple Cluster (2 node + quorum setup) with more then 100 > Resources ( 10 x VIP + 90 Microservices) per Node. If the Resources are > stopped/started at the same time the Server is under heavy load, which may >

[ClusterLabs] Limit the number of resources starting/stoping in parallel possible?

2023-09-18 Thread Knauf Steffen
Hi, we have multiple Cluster (2 node + quorum setup) with more then 100 Resources ( 10 x VIP + 90 Microservices) per Node. If the Resources are stopped/started at the same time the Server is under heavy load, which may result into timeouts and an unresponsive server. We configured some Ordering

Re: [ClusterLabs] [EXTERNE] Re: Centreon HA Cluster - VIP issue

2023-09-18 Thread Ken Gaillot
On Fri, 2023-09-15 at 09:32 +, Adil BOUAZZAOUI wrote: > Hi Ken, > > Any update please? > > The idea is clear; I just need to know more information about this 2 > clusters setup: > > 1. Arbitrator: > 1.1. Only one arbitrator is needed for everything: should I use the > Quorum provided by

Re: [ClusterLabs] PostgreSQL HA on EL9

2023-09-18 Thread Ken Gaillot
Ah, good catch. FYI, we created a hook for situations like this a while back: resource-agents-deps.target. Which reminds me we really need to document it ... To use it, put a drop-in unit under /etc/systemd/system/resource- agents-deps.target.d/ (any name ending in .conf) with: [Unit]