[ClusterLabs] Location not working

[Andrei Borzenkov]

On Mon, Apr 10, 2023 at 4:26 PM Ken Gaillot <kgaillot at redhat.com> wrote:
>
> On Mon, 2023-04-10 at 14:18 +0300, Miro Igov wrote:
> > Hello,
> > I have a resource with location constraint set to:
> >
> > location intranet-ip_on_any_nginx intranet-ip \
> >         rule -inf: opa-nginx_1_active eq 0 \
> >         rule -inf: opa-nginx_2_active eq 0
>
> You haven't specified a score for the constraint, so it defaults to 0,
> meaning the resource is allowed on those nodes but has no preference
> for them.
>

But each rule has score -INFINITY?

      <rsc_location id="intranet-ip_on_any_nginx" rsc="intranet-ip">
        <rule score="-INFINITY" id="intranet-ip_on_any_nginx-rule">
          <expression operation="eq" attribute="opa-nginx_1_active"
value="0" id="intranet-ip_on_any_nginx-rule-expression"/>
        </rule>
        <rule score="-INFINITY" id="intranet-ip_on_any_nginx-rule-0">
          <expression operation="eq" attribute="opa-nginx_2_active"
value="0" id="intranet-ip_on_any_nginx-rule-0-expression"/>
        </rule>
      </rsc_location>

This exactly matches the example in documentation where score is moved
from rsc_location to rule.

> >
> > In syslog I see the attribute transition:
> > Apr 10 12:11:02 intranet-test2 pacemaker-attrd[1511]:  notice:
> > Setting opa-nginx_1_active[intranet-test1]: 1 -> 0
> >
> > Current cluster status is :
> >
> > Node List:
> >   * Online: [ intranet-test1 intranet-test2 nas-sync-test1 nas-sync-
> > test2 ]
> >
> > * stonith-sbd (stonith:external/sbd):  Started intranet-test2
> >   * admin-ip    (ocf::heartbeat:IPaddr2):        Started nas-sync-
> > test2
> >   * cron_symlink        (ocf::heartbeat:symlink):        Started
> > intranet-test1
> >   * intranet-ip (ocf::heartbeat:IPaddr2):        Started intranet-
> > test1
> >   * mysql_1     (systemd:mariadb at intranet-test1):        Started
> > intranet-test1
> >   * mysql_2     (systemd:mariadb at intranet-test2):        Started
> > intranet-test2
> >   * nginx_1     (systemd:nginx at intranet-test1):  Stopped
> >   * nginx_1_active      (ocf::pacemaker:attribute):      Stopped
> >   * nginx_2     (systemd:nginx at intranet-test2):  Started intranet-
> > test2
> >   * nginx_2_active      (ocf::pacemaker:attribute):      Started
> > intranet-test2
> >   * php_1       (systemd:php5.6-fpm at intranet-test1):     Started
> > intranet-test1
> >   * php_2       (systemd:php5.6-fpm at intranet-test2):     Started
> > intranet-test2
> >   * data_1      (ocf::heartbeat:Filesystem):     Stopped
> >   * data_2      (ocf::heartbeat:Filesystem):     Started intranet-
> > test2
> >   * nfs_export_1        (ocf::heartbeat:exportfs):       Stopped
> >   * nfs_export_2        (ocf::heartbeat:exportfs):       Started nas-
> > sync-test2
> >   * nfs_server_1        (systemd:nfs-server at nas-sync-test1):
> > Stopped
> >   * nfs_server_2        (systemd:nfs-server at nas-sync-test2):
> > Started nas-sync-test2
> >
> > Failed Resource Actions:
> >   * nfs_server_1_start_0 on nas-sync-test1 'error' (1): call=95,
> > status='complete', exitreason='', last-rc-change='2023-04-10 12:35:12
> > +02:00', queued=0ms, exec=209ms
> >
> >
> > Why intranet-ip is located on intranet-test1 while nginx_1_active is
> > 0 ?
> >
> > # crm res constraint intranet-ip
> >
> > cron_symlink
> >         (score=INFINITY, id=c_cron_symlink_on_intranet-ip)
> > * intranet-ip
> >   : Node nas-sync-
> > test2
> > (score=-INFINITY, id=intranet-ip_loc-rule)
> >   : Node nas-sync-
> > test1
> > (score=-INFINITY, id=intranet-ip_loc-rule)
> >
> > Why no constraint entry for intranet-ip_on_any_nginx location ?
> >
> >
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> --
> Ken Gaillot <kgaillot at redhat.com>
>
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