[Pacemaker] [pacemaker] DRBD + corosync + pacemaker + postgresql

emmanuel segura emi2fast at gmail.com
Fri Oct 11 16:23:23 UTC 2013


try with this constrains

colocation col_postgresql inf: postgresql_cluster ms_drbd_postgresql:Master
order or_postgresql inf: ms_drbd_postgresql:promote postgresql_cluster:start



2013/10/11 Thomaz Luiz Santos <thomaz.santos at gmail.com>

> Dear all!
>
> I'm trying to make a sample cluster, in virtual machine, and after migrate
> to a physical machine, however i have problems to configure the pacemaker (
> crm ),  to startup the resources and failover.
>
> I cant mount the device /dev/drbd0 in the primary node and start
> postgresql manually, but use in crm resource,  dont can mount the device,
> and start de postgresql.
>
>
>
> DRBD Version: 8.3.11 (api:88)
> Corosync Cluster Engine, version '1.4.2'
> Pacemaker 1.1.6
>
>
>
> **** that is my configure on crm ****
>
> crm(live)# configure
> crm(live)configure# show
> node ha-master
> node ha-slave
> primitive drbd_postgresql ocf:heartbeat:drbd \
>         params drbd_resource="postgresql"
> primitive fs_postgresql ocf:heartbeat:Filesystem \
>         params device="/dev/drbd0" directory="/mnt" fstype="ext4" \
>         meta target-role="Started"
> primitive postgresql lsb:postgresql \
>         meta target-role="Started"
> primitive vip_cluster ocf:heartbeat:IPaddr2 \
>         params ip="172.70.65.200" nic="eth0:1" \
>         meta target-role="Started"
> group postgresql_cluster fs_postgresql vip_cluster postgresql
> ms ms_drbd_postgresql drbd_postgresql \
>         meta master-max="1" master-node-max="1" clone-max="2"
> clone-node-max="1" notify="true" target-role="Stopped"
> colocation col_postgresql inf: postgresql_cluster ms_drbd_postgresql
> order or_postgresql inf: ms_drbd_postgresql postgresql_cluster
> property $id="cib-bootstrap-options" \
>         dc-version="1.1.6-9971ebba4494012a93c03b40a2c58ec0eb60f50c" \
>         cluster-infrastructure="openais" \
>         expected-quorum-votes="2" \
>         stonith-enabled="false" \
>         no-quorum-policy="ignore"
> rsc_defaults $id="rsc-options" \
>         resource-stickiness="100"
>
>
> **** that is my global_common on drbd  ****
>
> global {
>         usage-count yes;
>         # minor-count dialog-refresh disable-ip-verification
> }
>
> common {
>         protocol C;
>
>         handlers {
>                 pri-on-incon-degr
> "/usr/lib/drbd/notify-pri-on-incon-degr.sh; /usr/lib/drbd/not
>
>            ify-emergency-reboot.sh; echo b > /proc/sysrq-trigger ; reboot
> -f";
>                 pri-lost-after-sb
> "/usr/lib/drbd/notify-pri-lost-after-sb.sh; /usr/lib/drbd/not
>
>            ify-emergency-reboot.sh; echo b > /proc/sysrq-trigger ; reboot
> -f";
>                 local-io-error "/usr/lib/drbd/notify-io-error.sh;
> /usr/lib/drbd/notify-emergenc
>                                                        y-shutdown.sh; echo
> o > /proc/sysrq-trigger ; halt -f";
>                 fence-peer "/usr/lib/drbd/crm-fence-peer.sh";
>                 after-resync-target "/usr/lib/drbd/crm-unfence-peer.sh";
>                 # split-brain "/usr/lib/drbd/notify-split-brain.sh root";
>                 # out-of-sync "/usr/lib/drbd/notify-out-of-sync.sh root";
>                 # before-resync-target
> "/usr/lib/drbd/snapshot-resync-target-lvm.sh -p 15 -- -c
>
>         16k";
>                 # after-resync-target
> /usr/lib/drbd/unsnapshot-resync-target-lvm.sh;
>         }
>
>         startup {
>                  # wfc-timeout 15;
>                  # degr-wfc-timeout 60;
>                  # outdated-wfc-timeout wait-after-sb
>         }
>
>         disk {
>                 # on-io-error fencing use-bmbv no-disk-barrier
> no-disk-flushes
>                 # no-disk-drain no-md-flushes max-bio-bvecs
>         }
>
>         net {
>                 # cram-hmac-alg sha1;
>                 # shared-secret "secret";
>                 # sndbuf-size rcvbuf-size timeout connect-int ping-int
> ping-timeout max-buffers
>                 # max-epoch-size ko-count allow-two-primaries
> cram-hmac-alg shared-secret
>                 # after-sb-0pri after-sb-1pri after-sb-2pri
> data-integrity-alg no-tcp-cork
>         }
>
>         syncer {
>                 # rate 150M;
>                 # rate after al-extents use-rle cpu-mask verify-alg
> csums-alg
>         }
> }
>
>
> **** that is my postgresql.res ****
>
> resource postgresql {
>   startup {
>     wfc-timeout 15;
>     degr-wfc-timeout 60;
>   }
>
>   syncer {
>     rate 150M;
>     verify-alg md5;
>  }
>
>  disk {
>    on-io-error detach;
>    no-disk-barrier;
>    no-disk-flushes;
>    no-disk-drain;
>    fencing resource-only;
>  }
>
>  on ha-master {
>     device /dev/drbd0;
>     disk /dev/sdb1;
>     address 172.70.65.210:7788;
>     meta-disk internal;
>  }
>
>  on ha-slave {
>     device /dev/drbd0;
>     disk /dev/sdb1;
>     address 172.70.65.220:7788;
>     meta-disk internal;
>  }
>
>
> }
>
>
> **** that is my corosync.conf ****
>
>
> compatibility: whitetank
>
> totem {
>         version: 2
>         secauth: off
>         threads: 0
>         interface {
>                 ringnumber: 0
>                 bindnetaddr: 172.70.65.200
>                 mcastaddr: 226.94.1.1
>                 mcastport: 5405
>                 ttl: 1
>         }
> }
>
> logging {
>         fileline: off
>         to_stderr: yes
>         to_logfile: yes
>         to_syslog: yes
>         logfile: /var/log/cluster/corosync.log
>         debug: on
>         timestamp: on
>         logger_subsys {
>                 subsys: AMF
>                 debug: off
>         }
> }
>
> amf {
>         mode: disabled
> }
>
> aisexec{
>   user : root
>   group : root
> }
>
> service{
>   # Load the Pacemaker Cluster Resource Manager
>   name : pacemaker
>   ver : 0
> }
>
>
>
> DRBD, postgresql, manually start :
>
>
> version: 8.3.13 (api:88/proto:86-96)
> srcversion: 697DE8B1973B1D8914F04DB
>  0: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate C r-----
>     ns:0 nr:0 dw:0 dr:664 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:n oos:0
>
>
> version: 8.3.13 (api:88/proto:86-96)
> srcversion: 697DE8B1973B1D8914F04DB
>  0: cs:Connected ro:Secondary/Primary ds:UpToDate/UpToDate C r-----
>     ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:n oos:0
>
>
>
> root at ha-master:/mnt# df -hT
> Sist. Arq.     Tipo      Tam. Usado Disp. Uso% Montado em
> /dev/sda1      ext4      4,0G  1,8G  2,1G  47% /
> udev           devtmpfs  473M  4,0K  473M   1% /dev
> tmpfs          tmpfs     193M  264K  193M   1% /run
> none           tmpfs     5,0M  4,0K  5,0M   1% /run/lock
> none           tmpfs     482M   17M  466M   4% /run/shm
> /dev/drbd0     ext4      2,0G   69M  1,9G   4% /mnt
>
>
> root at ha-master:/mnt# service postgresql status
> Running clusters: 9.1/main
>
>
>
>
> --
> ------------------------------
> Thomaz Luiz Santos
> Linux User: #359356
>
>
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>
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>
>


-- 
esta es mi vida e me la vivo hasta que dios quiera
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