Hi
I have asymmetric cluster. After upgrade pacemaker to version 1.1.18 I
tried to use "resource-discovery=exclusive" attr to limit probes when
resources (VirtualDomain) start.
But I dont see records in log on nodes where cluster does probes before
start resource. Moreover, I have run the guest manually and then tried to
run appropriate resource with cluster, without succes - cluster doesnt see
already running guest and launch another instance on different node.
May be I have wrong understand about "resource-discovery=exclusive"
behavior? Pls, clarify it for me.
Sample configuration.
Cluster properties
[root@n01 mmike]# pcs property show
Cluster Properties:
batch-limit: 3
cluster-infrastructure: corosync
cluster-name: smo01
cluster-recheck-interval: 5min
dc-version: 1.1.18-11.el7_5.2-2b07d5c5a9
have-watchdog: false
last-lrm-refresh: 1527458783
maintenance-mode: false
migration-limit: 2
no-quorum-policy: freeze
placement-strategy: balanced
start-failure-is-fatal: false
stonith-enabled: true
symmetric-cluster: false
Resource
[root@n01 mmike]# pcs resource show vm-sl-gate-01
Resource: vm-sl-gate-01 (class=ocf provider=heartbeat type=VirtualDomain)
Attributes: autoset_utilization_cpu=yes autoset_utilization_hv_memory=yes
config=/etc/libvirt/shared/sl-gate-01.xml hypervisor=qemu:///system
migration_downtime=3000 migration_network_suffix=-libvirt
migration_speed=32 migration_transport=tls
Meta Attrs: allow-migrate=true remote-node=sl-gate-01
remote-addr=remote-sl-gate-01 remote-connect-timeout=120s
Utilization: cpu=2 hv_memory=4096
Operations: migrate_from interval=0s timeout=1800s
(vm-sl-gate-01-migrate_from-interval-0s)
migrate_to interval=0s timeout=1800s
(vm-sl-gate-01-migrate_to-interval-0s)
monitor interval=30s timeout=120s
(vm-sl-gate-01-monitor-interval-30s)
start interval=0s timeout=60s
(vm-sl-gate-01-start-interval-0s)
stop interval=0s on-fail=block timeout=120s
(vm-sl-gate-01-stop-interval-0s)
Location constraint
[root@n01 mmike]# pcs constraint location show resources vm-sl-gate-01
--full
Location Constraints:
Resource: vm-sl-gate-01
Constraint: location-vm-sl-gate-01 (resource-discovery=exclusive)
Rule: score=100 (id:location-vm-sl-gate-01-score100)
Expression: #kind eq cluster
(id:location-vm-sl-gate-01-score100-expr)
Result
[root@n02 mmike]# LANG=C virsh list
Id Name State
----------------------------------------------------
9 sl-gate-01 running
[root@n03 mmike]# LANG=C virsh list
Id Name State
----------------------------------------------------
4 sl-gate-01 running
--
Michael Kolomiets
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