Am 13.06.2018 um 16:18 schrieb Ken Gaillot: > On Wed, 2018-06-13 at 14:25 +0200, Michael Schwartzkopff wrote: >> On Wednesday, June 13, 2018 10:01 CEST, "Michael Schwartzkopff" <ms@s >> ys4.de> wrote: >> >>> Hi, >>> >>> we have a cluster with several IP addresses that can start after an >>> other resource. In the logs we see that only 2 IP addresses start >>> in parallel, not all. Can anyone please explain, why not all IP >>> addresses start in parallel? >>> >>> Config: >>> primitive resProc ocf:myprovider:Proc >>> (ten times:) primitive resIP1 ocf:heartbeat:IPaddr2 params >>> ip="192.168.100.1" >>> order ord_Proc_IP Mandatory: resProc ( resIP1 resIP2 ... ) >>> collocation col_IP_Proc inf: (resIP1 resIP2 ...) resProc >>> >>> No batch-limit in properties. >>> Any ideas? Thanks. >>> >>> Michael > Each node has a limit of how many jobs it can execute in parallel. In > order of most preferred to least, it will be: > > * The value of the (undocumented) PCMK_node_action_limit environment > variable on that node (no limit if not existing) > > * The value of the (also undocumented) node-action-limit cluster > property (defaulting to 0 meaning no limit) > > * Twice the node's number of CPU cores (as reported by /proc/stat) > > Also, the cluster will auto-calculate a cluster-wide batch-limit if > high load is observed on any node. > > So, you could mostly override throttling by setting a high node-action- > limit. > >> Hi, >> >> additional remark: >> >> With some tweaks I made my cluster start two resources (i.e. IP1 and >> IP2) at the same time. But it takes about 4 seconds to that the >> cluster starts the next resources (i.e. IP3 and IP4). >> >> Did anybody see this behaviour before? >> >> Why does my cluster do not start all "parallel" resources together? >> >> Michael. > Ken Gaillot <kgail...@redhat.com>
Thanks for this clarification. Mit freundlichen Grüßen, -- [*] sys4 AG https://sys4.de, +49 (89) 30 90 46 64 Schleißheimer Straße 26/MG,80333 München Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 Vorstand: Patrick Ben Koetter, Marc Schiffbauer, Wolfgang Stief Aufsichtsratsvorsitzender: Florian Kirstein
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