[ClusterLabs] Pacemaker/pcs & DRBD not demoting secondary node to Slave (always Stopped)
Jason Gress
jgress at accertify.com
Thu Sep 17 23:36:09 UTC 2015
I can't say whether or not you are right or wrong (you may be!) but I followed the Cluster From Scratch tutorial closely, and it only had a clone-node-max=1 there. (Page 106 of the pdf, for the curious.)
Thanks,
Jason
From: Luke Pascoe <luke at osnz.co.nz<mailto:luke at osnz.co.nz>>
Reply-To: Cluster Labs - All topics related to open-source clustering welcomed <users at clusterlabs.org<mailto:users at clusterlabs.org>>
Date: Thursday, September 17, 2015 at 6:29 PM
To: Cluster Labs - All topics related to open-source clustering welcomed <users at clusterlabs.org<mailto:users at clusterlabs.org>>
Subject: Re: [ClusterLabs] Pacemaker/pcs & DRBD not demoting secondary node to Slave (always Stopped)
I may be wrong, but shouldn't "clone-node-max" be 2 on the ms_drbd_vmfs resource?
Luke Pascoe
[http://osnz.co.nz/logo_blue_80.png]
E luke at osnz.co.nz<mailto:luke at osnz.co.nz>
P +64 (9) 296 2961
M +64 (27) 426 6649
W www.osnz.co.nz<http://www.osnz.co.nz/>
24 Wellington St
Papakura
Auckland, 2110
New Zealand
On 18 September 2015 at 11:02, Jason Gress <jgress at accertify.com<mailto:jgress at accertify.com>> wrote:
I have a simple DRBD + filesystem + NFS configuration that works properly when I manually start/stop DRBD, but will not start the DRBD slave resource properly on failover or recovery. I cannot ever get the Master/Slave set to say anything but 'Stopped'. I am running CentOS 7.1 with the latest packages as of today:
[root at fx201-1a log]# rpm -qa | grep -e pcs -e pacemaker -e drbd
pacemaker-cluster-libs-1.1.12-22.el7_1.4.x86_64
pacemaker-1.1.12-22.el7_1.4.x86_64
pcs-0.9.137-13.el7_1.4.x86_64
pacemaker-libs-1.1.12-22.el7_1.4.x86_64
drbd84-utils-8.9.3-1.1.el7.elrepo.x86_64
pacemaker-cli-1.1.12-22.el7_1.4.x86_64
kmod-drbd84-8.4.6-1.el7.elrepo.x86_64
Here is my pcs config output:
[root at fx201-1a log]# pcs config
Cluster Name: fx201-vmcl
Corosync Nodes:
fx201-1a.ams fx201-1b.ams
Pacemaker Nodes:
fx201-1a.ams fx201-1b.ams
Resources:
Resource: ClusterIP (class=ocf provider=heartbeat type=IPaddr2)
Attributes: ip=10.XX.XX.XX cidr_netmask=24
Operations: start interval=0s timeout=20s (ClusterIP-start-timeout-20s)
stop interval=0s timeout=20s (ClusterIP-stop-timeout-20s)
monitor interval=15s (ClusterIP-monitor-interval-15s)
Master: ms_drbd_vmfs
Meta Attrs: master-max=1 master-node-max=1 clone-max=2 clone-node-max=1 notify=true
Resource: drbd_vmfs (class=ocf provider=linbit type=drbd)
Attributes: drbd_resource=vmfs
Operations: start interval=0s timeout=240 (drbd_vmfs-start-timeout-240)
promote interval=0s timeout=90 (drbd_vmfs-promote-timeout-90)
demote interval=0s timeout=90 (drbd_vmfs-demote-timeout-90)
stop interval=0s timeout=100 (drbd_vmfs-stop-timeout-100)
monitor interval=30s (drbd_vmfs-monitor-interval-30s)
Resource: vmfsFS (class=ocf provider=heartbeat type=Filesystem)
Attributes: device=/dev/drbd0 directory=/exports/vmfs fstype=xfs
Operations: start interval=0s timeout=60 (vmfsFS-start-timeout-60)
stop interval=0s timeout=60 (vmfsFS-stop-timeout-60)
monitor interval=20 timeout=40 (vmfsFS-monitor-interval-20)
Resource: nfs-server (class=systemd type=nfs-server)
Operations: monitor interval=60s (nfs-server-monitor-interval-60s)
Stonith Devices:
Fencing Levels:
Location Constraints:
Ordering Constraints:
promote ms_drbd_vmfs then start vmfsFS (kind:Mandatory) (id:order-ms_drbd_vmfs-vmfsFS-mandatory)
start vmfsFS then start nfs-server (kind:Mandatory) (id:order-vmfsFS-nfs-server-mandatory)
start ClusterIP then start nfs-server (kind:Mandatory) (id:order-ClusterIP-nfs-server-mandatory)
Colocation Constraints:
ms_drbd_vmfs with ClusterIP (score:INFINITY) (id:colocation-ms_drbd_vmfs-ClusterIP-INFINITY)
vmfsFS with ms_drbd_vmfs (score:INFINITY) (with-rsc-role:Master) (id:colocation-vmfsFS-ms_drbd_vmfs-INFINITY)
nfs-server with vmfsFS (score:INFINITY) (id:colocation-nfs-server-vmfsFS-INFINITY)
Cluster Properties:
cluster-infrastructure: corosync
cluster-name: fx201-vmcl
dc-version: 1.1.13-a14efad
have-watchdog: false
last-lrm-refresh: 1442528181
stonith-enabled: false
And status:
[root at fx201-1a log]# pcs status --full
Cluster name: fx201-vmcl
Last updated: Thu Sep 17 17:55:56 2015 Last change: Thu Sep 17 17:18:10 2015 by root via crm_attribute on fx201-1b.ams
Stack: corosync
Current DC: fx201-1b.ams (2) (version 1.1.13-a14efad) - partition with quorum
2 nodes and 5 resources configured
Online: [ fx201-1a.ams (1) fx201-1b.ams (2) ]
Full list of resources:
ClusterIP (ocf::heartbeat:IPaddr2):Started fx201-1a.ams
Master/Slave Set: ms_drbd_vmfs [drbd_vmfs]
drbd_vmfs (ocf::linbit:drbd):Master fx201-1a.ams
drbd_vmfs (ocf::linbit:drbd):Stopped
Masters: [ fx201-1a.ams ]
Stopped: [ fx201-1b.ams ]
vmfsFS (ocf::heartbeat:Filesystem):Started fx201-1a.ams
nfs-server (systemd:nfs-server):Started fx201-1a.ams
PCSD Status:
fx201-1a.ams: Online
fx201-1b.ams: Online
Daemon Status:
corosync: active/enabled
pacemaker: active/enabled
pcsd: active/enabled
If I do a failover, after manually confirming that the DRBD data is synchronized completely, it does work, but then never reconnects the secondary side, and in order to get the resource synchronized again, I have to manually correct it, ad infinitum. I have tried standby/unstandby, pcs resource debug-start (with undesirable results), and so on.
Here are some relevant log messages from pacemaker.log:
Sep 17 17:48:10 [13954] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> crmd: info: crm_timer_popped:PEngine Recheck Timer (I_PE_CALC) just popped (900000ms)
Sep 17 17:48:10 [13954] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> crmd: notice: do_state_transition:State transition S_IDLE -> S_POLICY_ENGINE [ input=I_PE_CALC cause=C_TIMER_POPPED origin=crm_timer_popped ]
Sep 17 17:48:10 [13954] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> crmd: info: do_state_transition:Progressed to state S_POLICY_ENGINE after C_TIMER_POPPED
Sep 17 17:48:10 [5662] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> pengine: info: process_pe_message:Input has not changed since last time, not saving to disk
Sep 17 17:48:10 [5662] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> pengine: info: determine_online_status:Node fx201-1b.ams is online
Sep 17 17:48:10 [5662] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> pengine: info: determine_online_status:Node fx201-1a.ams is online
Sep 17 17:48:10 [5662] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> pengine: info: determine_op_status:Operation monitor found resource drbd_vmfs:0 active in master mode on fx201-1b.ams
Sep 17 17:48:10 [5662] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> pengine: info: determine_op_status:Operation monitor found resource drbd_vmfs:0 active on fx201-1a.ams
Sep 17 17:48:10 [5662] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> pengine: info: native_print:ClusterIP (ocf::heartbeat:IPaddr2):Started fx201-1a.ams
Sep 17 17:48:10 [5662] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> pengine: info: clone_print:Master/Slave Set: ms_drbd_vmfs [drbd_vmfs]
Sep 17 17:48:10 [5662] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> pengine: info: short_print: Masters: [ fx201-1a.ams ]
Sep 17 17:48:10 [5662] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> pengine: info: short_print: Stopped: [ fx201-1b.ams ]
Sep 17 17:48:10 [5662] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> pengine: info: native_print:vmfsFS (ocf::heartbeat:Filesystem):Started fx201-1a.ams
Sep 17 17:48:10 [5662] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> pengine: info: native_print:nfs-server (systemd:nfs-server):Started fx201-1a.ams
Sep 17 17:48:10 [5662] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> pengine: info: native_color:Resource drbd_vmfs:1 cannot run anywhere
Sep 17 17:48:10 [5662] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> pengine: info: master_color:Promoting drbd_vmfs:0 (Master fx201-1a.ams)
Sep 17 17:48:10 [5662] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> pengine: info: master_color:ms_drbd_vmfs: Promoted 1 instances of a possible 1 to master
Sep 17 17:48:10 [5662] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> pengine: info: LogActions:Leave ClusterIP (Started fx201-1a.ams)
Sep 17 17:48:10 [5662] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> pengine: info: LogActions:Leave drbd_vmfs:0 (Master fx201-1a.ams)
Sep 17 17:48:10 [5662] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> pengine: info: LogActions:Leave drbd_vmfs:1 (Stopped)
Sep 17 17:48:10 [5662] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> pengine: info: LogActions:Leave vmfsFS (Started fx201-1a.ams)
Sep 17 17:48:10 [5662] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> pengine: info: LogActions:Leave nfs-server (Started fx201-1a.ams)
Sep 17 17:48:10 [5662] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> pengine: notice: process_pe_message:Calculated Transition 16: /var/lib/pacemaker/pengine/pe-input-61.bz2
Sep 17 17:48:10 [13954] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> crmd: info: do_state_transition:State transition S_POLICY_ENGINE -> S_TRANSITION_ENGINE [ input=I_PE_SUCCESS cause=C_IPC_MESSAGE origin=handle_response ]
Sep 17 17:48:10 [13954] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> crmd: info: do_te_invoke:Processing graph 16 (ref=pe_calc-dc-1442530090-97) derived from /var/lib/pacemaker/pengine/pe-input-61.bz2
Sep 17 17:48:10 [13954] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> crmd: notice: run_graph:Transition 16 (Complete=0, Pending=0, Fired=0, Skipped=0, Incomplete=0, Source=/var/lib/pacemaker/pengine/pe-input-61.bz2): Complete
Sep 17 17:48:10 [13954] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> crmd: info: do_log:FSA: Input I_TE_SUCCESS from notify_crmd() received in state S_TRANSITION_ENGINE
Sep 17 17:48:10 [13954] fx201-1b.ams.accertify.net<http://fx201-1b.ams.accertify.net> crmd: notice: do_state_transition:State transition S_TRANSITION_ENGINE -> S_IDLE [ input=I_TE_SUCCESS cause=C_FSA_INTERNAL origin=notify_crmd ]
Thank you all for your help,
Jason
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