[ClusterLabs] 2 node mariadb-cluster - constraint-problems ?
fatcharly at gmx.de
fatcharly at gmx.de
Tue May 11 10:43:32 EDT 2021
Hi,
I'm using a CentOS 8.3.2011 with a pacemaker-2.0.4-6.el8_3.1.x86_64 + corosync-3.0.3-4.el8.x86_64 and kmod-drbd90-9.0.25-2.el8_3.elrepo.x86_64.
The cluster consists of two nodes which are providing a ha-mariadb with the help of two drbd devices for the database and the logfiles. The corosync is working over two rings and both machines are virtual kvm-guests.
Problem:
Node susanne is the active node and lisbon is changing from standby to active, susanna is trying to demote one drbd-device but is failling to. The cluster is working on properly, but the error stays.
This is the what happens:
Cluster Summary:
* Stack: corosync
* Current DC: lisbon (version 2.0.4-6.el8_3.1-2deceaa3ae) - partition with quo rum
* Last updated: Tue May 11 16:15:54 2021
* Last change: Tue May 11 16:15:42 2021 by root via cibadmin on susanne
* 2 nodes configured
* 11 resource instances configured
Node List:
* Online: [ lisbon susanne ]
Active Resources:
* HA_IP (ocf::heartbeat:IPaddr2): Started susanne
* Clone Set: database_drbd-clone [database_drbd] (promotable):
* Masters: [ susanne ]
* Slaves: [ lisbon ]
* Clone Set: drbd_logsfiles-clone [drbd_logsfiles] (promotable):
* drbd_logsfiles (ocf::linbit:drbd): Demoting susanne
* fs_logfiles (ocf::heartbeat:Filesystem): Started susanne
* fs_database (ocf::heartbeat:Filesystem): Started susanne
* mysql-server (ocf::heartbeat:mysql): Started susanne
* Clone Set: ping_fw-clone [ping_fw]:
* Started: [ lisbon susanne ]
-------------------------------------------------------------------------------------------
after a few seconds it switches over:
Cluster Summary:
* Stack: corosync
* Current DC: lisbon (version 2.0.4-6.el8_3.1-2deceaa3ae) - partition with quo rum
* Last updated: Tue May 11 16:17:59 2021
* Last change: Tue May 11 16:15:42 2021 by root via cibadmin on susanne
* 2 nodes configured
* 11 resource instances configured
Node List:
* Online: [ lisbon susanne ]
Active Resources:
* HA_IP (ocf::heartbeat:IPaddr2): Started susanne
* Clone Set: database_drbd-clone [database_drbd] (promotable):
* Masters: [ susanne ]
* Slaves: [ lisbon ]
* Clone Set: drbd_logsfiles-clone [drbd_logsfiles] (promotable):
* Masters: [ susanne ]
* Slaves: [ lisbon ]
* fs_logfiles (ocf::heartbeat:Filesystem): Started susanne
* fs_database (ocf::heartbeat:Filesystem): Started susanne
* mysql-server (ocf::heartbeat:mysql): Started susanne
* Resource Group: apache:
* httpd_srv (ocf::heartbeat:apache): Started susanne
* Clone Set: ping_fw-clone [ping_fw]:
* Started: [ lisbon susanne ]
Failed Resource Actions:
* drbd_logsfiles_demote_0 on susanne 'error' (1): call=736, status='Timed Out'
, exitreason='', last-rc-change='2021-05-11 16:15:42 +02:00', queued=0ms, exec=9 0001ms
----------------------------------------------------------------------------------------------
I think it is a constraint-problem, but I can't find it.
This is my config:
[root at susanne pacemaker]# pcs config show Cluster Name: mysql_cluster Corosync Nodes:
susanne lisbon
Pacemaker Nodes:
lisbon susanne
Resources:
Resource: HA_IP (class=ocf provider=heartbeat type=IPaddr2)
Attributes: cidr_netmask=24 ip=192.168.18.154
Operations: monitor interval=15s (HA_IP-monitor-interval-15s)
start interval=0s timeout=20s (HA_IP-start-interval-0s)
stop interval=0s timeout=20s (HA_IP-stop-interval-0s)
Clone: database_drbd-clone
Meta Attrs: clone-max=2 clone-node-max=1 notify=true promotable=true promoted-max=1 promoted-node-max=1
Resource: database_drbd (class=ocf provider=linbit type=drbd)
Attributes: drbd_resource=drbd1
Operations: demote interval=0s timeout=90 (database_drbd-demote-interval-0s)
monitor interval=20 role=Slave timeout=20 (database_drbd-monitor-interval-20)
monitor interval=10 role=Master timeout=20 (database_drbd-monitor-interval-10)
notify interval=0s timeout=90 (database_drbd-notify-interval-0s)
promote interval=0s timeout=90 (database_drbd-promote-interval-0s)
reload interval=0s timeout=30 (database_drbd-reload-interval-0s)
start interval=0s timeout=240 (database_drbd-start-interval-0s)
stop interval=0s timeout=100 (database_drbd-stop-interval-0s)
Clone: drbd_logsfiles-clone
Meta Attrs: clone-max=2 clone-node-max=1 notify=true promotable=true promoted-max=1 promoted-node-max=1
Resource: drbd_logsfiles (class=ocf provider=linbit type=drbd)
Attributes: drbd_resource=drbd2
Operations: demote interval=0s timeout=90 (drbd_logsfiles-demote-interval-0s)
monitor interval=20 role=Slave timeout=20 (drbd_logsfiles-monitor-interval-20)
monitor interval=10 role=Master timeout=20 (drbd_logsfiles-monitor-interval-10)
notify interval=0s timeout=90 (drbd_logsfiles-notify-interval-0s)
promote interval=0s timeout=90 (drbd_logsfiles-promote-interval-0s)
reload interval=0s timeout=30 (drbd_logsfiles-reload-interval-0s)
start interval=0s timeout=240 (drbd_logsfiles-start-interval-0s)
stop interval=0s timeout=100 (drbd_logsfiles-stop-interval-0s)
Resource: fs_logfiles (class=ocf provider=heartbeat type=Filesystem)
Attributes: device=/dev/drbd2 directory=/mnt/clusterfs2 fstype=ext4
Operations: monitor interval=20s timeout=40s (fs_logfiles-monitor-interval-20s)
start interval=0s timeout=60s (fs_logfiles-start-interval-0s)
stop interval=0s timeout=60s (fs_logfiles-stop-interval-0s)
Resource: fs_database (class=ocf provider=heartbeat type=Filesystem)
Attributes: device=/dev/drbd1 directory=/mnt/clusterfs1 fstype=ext4
Operations: monitor interval=20s timeout=40s (fs_database-monitor-interval-20s)
start interval=0s timeout=60s (fs_database-start-interval-0s)
stop interval=0s timeout=60s (fs_database-stop-interval-0s)
Resource: mysql-server (class=ocf provider=heartbeat type=mysql)
Attributes: additional_parameters=--bind-address=0.0.0.0 binary=/usr/bin/mysqld_safe config=/etc/my.cnf datadir=/mnt/clusterfs1/mysql pid=/var/lib/mysql/run/mariadb.pid socket=/var/lib/mysql/mysql.sock
Operations: demote interval=0s timeout=120s (mysql-server-demote-interval-0s)
monitor interval=20s timeout=30s (mysql-server-monitor-interval-20s)
notify interval=0s timeout=90s (mysql-server-notify-interval-0s)
promote interval=0s timeout=120s (mysql-server-promote-interval-0s)
start interval=0s timeout=60s (mysql-server-start-interval-0s)
stop interval=0s timeout=60s (mysql-server-stop-interval-0s)
Group: apache
Resource: httpd_srv (class=ocf provider=heartbeat type=apache)
Attributes: configfile=/etc/httpd/conf/httpd.conf statusurl=http://127.0.0.1/server-status
Operations: monitor interval=10s timeout=20s (httpd_srv-monitor-interval-10s)
start interval=0s timeout=40s (httpd_srv-start-interval-0s)
stop interval=0s timeout=60s (httpd_srv-stop-interval-0s)
Clone: ping_fw-clone
Resource: ping_fw (class=ocf provider=pacemaker type=ping)
Attributes: dampen=10s host_list=192.168.18.1 multiplier=1000
Operations: monitor interval=10s timeout=60s (ping_fw-monitor-interval-10s)
start interval=0s timeout=60s (ping_fw-start-interval-0s)
stop interval=0s timeout=20s (ping_fw-stop-interval-0s)
Stonith Devices:
Fencing Levels:
Location Constraints:
Resource: mysql-server
Constraint: location-mysql-server
Rule: boolean-op=or score=-INFINITY (id:location-mysql-server-rule)
Expression: pingd lt 1 (id:location-mysql-server-rule-expr)
Expression: not_defined pingd (id:location-mysql-server-rule-expr-1)
Ordering Constraints:
start mysql-server then start httpd_srv (kind:Mandatory) (id:order-mysql-server-httpd_srv-mandatory)
start database_drbd-clone then start drbd_logsfiles-clone (kind:Mandatory) (id:order-database_drbd-clone-drbd_logsfiles-clone-mandatory)
start drbd_logsfiles-clone then start fs_database (kind:Mandatory) (id:order-drbd_logsfiles-clone-fs_database-mandatory)
start fs_database then start fs_logfiles (kind:Mandatory) (id:order-fs_database-fs_logfiles-mandatory)
start fs_logfiles then start mysql-server (kind:Mandatory) (id:order-fs_logfiles-mysql-server-mandatory)
Colocation Constraints:
fs_logfiles with drbd_logsfiles-clone (score:INFINITY) (with-rsc-role:Master) (id:colocation-fs_logfiles-drbd_logsfiles-clone-INFINITY)
fs_database with database_drbd-clone (score:INFINITY) (with-rsc-role:Master) (id:colocation-fs_database-database_drbd-clone-INFINITY)
drbd_logsfiles-clone with database_drbd-clone (score:INFINITY) (rsc-role:Master) (with-rsc-role:Master) (id:colocation-drbd_logsfiles-clone-database_drbd-clone-INFINITY)
HA_IP with database_drbd-clone (score:INFINITY) (rsc-role:Started) (with-rsc-role:Master) (id:colocation-HA_IP-database_drbd-clone-INFINITY)
mysql-server with fs_database (score:INFINITY) (id:colocation-mysql-server-fs_database-INFINITY)
httpd_srv with mysql-server (score:INFINITY) (id:colocation-httpd_srv-mysql-server-INFINITY)
Ticket Constraints:
Alerts:
No alerts defined
Resources Defaults:
No defaults set
Operations Defaults:
No defaults set
Cluster Properties:
cluster-infrastructure: corosync
cluster-name: mysql_cluster
dc-version: 2.0.4-6.el8_3.1-2deceaa3ae
have-watchdog: false
last-lrm-refresh: 1620742514
stonith-enabled: FALSE
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Any suggestions are welcome
best regards stay safe, take care
fatcharly
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