[Pacemaker] [pacemaker] DRBD + corosync + pacemaker + postgresql
emmanuel segura
emi2fast at gmail.com
Fri Oct 11 12:23:23 EDT 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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