StefanoStrozzi.it

drbd:

global {
      usage-count yes;
      # minor-count dialog-refresh disable-ip-verification
}

common {
      handlers {
              # These are EXAMPLE handlers only.
              # They may have severe implications,
              # like hard resetting the node under certain circumstances.
              # Be careful when chosing your poison.

              pri-on-incon-degr "/usr/lib/drbd/notify-pri-on-incon-degr.sh; /usr/lib/drbd/notify-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/notify-emergency-reboot.sh; echo b > /proc/sysrq-trigger ; reboot -f";
              local-io-error "/usr/lib/drbd/notify-io-error.sh; /usr/lib/drbd/notify-emergency-shutdown.sh; echo o > /proc/sysrq-trigger ; halt -f";
              # fence-peer "/usr/lib/drbd/crm-fence-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 60;
              degr-wfc-timeout 120;
              #outdated-wfc-timeout wait-after-sb
      }

      options {
              # cpu-mask on-no-data-accessible
      }

      disk {
              # size max-bio-bvecs on-io-error fencing disk-barrier disk-flushes
              # disk-drain md-flushes resync-rate resync-after al-extents
              # c-plan-ahead c-delay-target c-fill-target c-max-rate
              # c-min-rate disk-timeout
      }

      net {
              # protocol timeout max-epoch-size max-buffers unplug-watermark
                # connect-int ping-int sndbuf-size rcvbuf-size ko-count
              # allow-two-primaries cram-hmac-alg shared-secret
              after-sb-0pri discard-zero-changes;
              after-sb-1pri discard-secondary;
              after-sb-2pri disconnect;
              #always-asbp rr-conflict
              # ping-timeout data-integrity-alg tcp-cork on-congestion
              # congestion-fill congestion-extents csums-alg verify-alg
              # use-rle
      }
}

global-originale 8.4.4

global {
      usage-count no;
      # minor-count dialog-refresh disable-ip-verification
}

common {
      handlers {
              # These are EXAMPLE handlers only.
              # They may have severe implications,
              # like hard resetting the node under certain circumstances.
              # Be careful when chosing your poison.

              # pri-on-incon-degr "/usr/lib/drbd/notify-pri-on-incon-degr.sh; /usr/lib/drbd/notify-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/notify-emergency-reboot.sh; echo b > /proc/sysrq-trigger ; reboot -f";
              # local-io-error "/usr/lib/drbd/notify-io-error.sh; /usr/lib/drbd/notify-emergency-shutdown.sh; echo o > /proc/sysrq-trigger ; halt -f";
              # fence-peer "/usr/lib/drbd/crm-fence-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 degr-wfc-timeout outdated-wfc-timeout wait-after-sb
      }

      options {
              # cpu-mask on-no-data-accessible
      }

      disk {
              # size max-bio-bvecs on-io-error fencing disk-barrier disk-flushes
              # disk-drain md-flushes resync-rate resync-after al-extents
              # c-plan-ahead c-delay-target c-fill-target c-max-rate
              # c-min-rate disk-timeout
      }

      net {
              # protocol timeout max-epoch-size max-buffers unplug-watermark
              # connect-int ping-int sndbuf-size rcvbuf-size ko-count
              # allow-two-primaries cram-hmac-alg shared-secret after-sb-0pri
              # after-sb-1pri after-sb-2pri always-asbp rr-conflict
              # ping-timeout data-integrity-alg tcp-cork on-congestion
              # congestion-fill congestion-extents csums-alg verify-alg
              # use-rle
        }
}

risorse:

resource resa {
       protocol C;
       net {
              allow-two-primaries ;
      }
      startup {
             become-primary-on both;
      }

on n4 {
  device    /dev/drbd0;
  disk      /dev/sda6;
  address   192.168.1.117:7788;
  meta-disk internal;
}

on n5 {
  device    /dev/drbd0;
  disk      /dev/sda6;
  address   192.168.1.107:7788;
  meta-disk internal;
}
}

cluster

<?xml version="1.0"?>
<cluster name="clstr" config_version="3">
<fence_daemon clean_start="1" post_fail_delay="0" post_join_delay="5"/>
<clusternodes>
      <clusternode name="n4" nodeid="1">
    <fence>
      <method name="ack-redirect">
        <device name="manual" port="n4"/>
      </method>
    </fence>
      </clusternode>
<clusternode name="n5" nodeid="2">
    <fence>
      <method name="ack-redirect">
        <device name="manual" port="n5"/>
      </method>
    </fence>
      </clusternode>
</clusternodes>
<cman expected_votes="1" two_node="1" transport="udpu"/>
<fencedevices>
      <fencedevice name="manual" agent="fence_pcmk"/>
</fencedevices>

<rm>
  <failoverdomains/>
  <resources/>
</rm>
<dlm enable_quorum="0" enable_fencing="0"/>

<gfs_controld enable_withdraw="0"/>
</cluster>

agenti fence:
dovrebbe essere:
fence_ack_manual
oppure:
fence_pcmk
ma con l'aggiunta dell'opzione port=“nomenodo” nel device method
esempio:

<?xml version="1.0"?>
<cluster name="clstr" config_version="4">

  <clusternodes>
    <clusternode name="n4" votes="1" nodeid="1">
      <fence>
        <method name="single">
          <device name="manual" port="n4"/>
        </method>
      </fence>
    </clusternode>
    <clusternode name="n5" votes="1" nodeid="2">
      <fence>
        <method name="single">
          <device name="manual" port="n4"/>
        </method>
      </fence>
    </clusternode>
  </clusternodes>

  <fencedevices>
  <fencedevice name="manual" agent="fence_ack_manual"/></fencedevices>

  <rm>
    <failoverdomains/>
    <resources/>
  </rm>
</cluster>

oppure:

<?xml version="1.0"?>
<cluster config_version="1" name="mycluster">
  <logging debug="off"/>
  <clusternodes>
    <clusternode name="pcmk-1" nodeid="1">
      <fence>
        <method name="pcmk-redirect">
          <device name="pcmk" port="pcmk-1"/>
        </method>
      </fence>
    </clusternode>
    <clusternode name="pcmk-2" nodeid="2">
      <fence>
        <method name="pcmk-redirect">
          <device name="pcmk" port="pcmk-2"/>
        </method>
      </fence>
    </clusternode>
  </clusternodes>
  <fencedevices>
    <fencedevice name="pcmk" agent="fence_pcmk"/>
  </fencedevices>
</cluster>

hosts

127.0.0.1       localhost
192.168.1.117   n4
192.168.1.107   n5

::1             localhost ip6-localhost ip6-loopback
fe00::0         ip6-localnet
ff00::0         ip6-mcastprefix
ff02::1         ip6-allnodes
ff02::2         ip6-allrouters

#127.0.1.1      n4

interface

auto eth0
iface eth0 inet static
address 192.168.1.117
netmask 255.255.255.0
gateway 192.168.1.1
                 

servizi default rcS

K05hwclock.sh	   S03keyboard-setup	      S09mountall-bootclean.sh	S15console-setup
K12rpcbind	   S04mountdevsubfs.sh	      S10procps			S16alsa-utils
K13nfs-common	   S05checkroot.sh	      S10udev-mtab		S16bootmisc.sh
README	   S06checkroot-bootclean.sh  S10urandom		S16plymouth-log
S01fake-hwclock  S06kmod		      S11networking		S16x11-common
S01hostname.sh   S06mtab.sh		      S12mountnfs.sh
S01mountkernfs.sh  S07checkfs.sh	      S13mountnfs-bootclean.sh
S02udev	   S08mountall.sh	      S14kbd

servizi default rc2

K01lightdm     README	      S01ifplugd  S01triggerhappy    S02ntp	      S05plymouth
K03drbd        S01bootlogs    S01motd	  S02cron	     S02rsync	      S05rc.local
K05nfs-common  S01cgroup-bin  S01rsyslog  S02dbus	     S02ssh	      S05rmnologin
K05rpcbind     S01dhcpcd      S01sudo	  S02dphys-swapfile  S04avahi-daemon

dopo inst cman e gfs2

K05hwclock.sh	   S04mountdevsubfs.sh	      S10urandom
K12rpcbind	   S05checkroot.sh	      S11networking
K13nfs-common	   S06checkroot-bootclean.sh  S12mountnfs.sh
K16alsa-utils	   S06kmod		      S13mountnfs-bootclean.sh
K16x11-common	   S06lvm2		      S14kbd
README	   S06mtab.sh		      S15console-setup
S01fake-hwclock    S07checkfs.sh	      S16bootmisc.sh
S01hostname.sh	   S08mountall.sh     S16cman
S01mountkernfs.sh  S09mountall-bootclean.sh   S16plymouth-log
S02udev	   S10procps		      S17gfs2-tools
S03keyboard-setup  S10udev-mtab

dopo inst cman e gfs2 rc2

K01avahi-daemon  K06rpcbind   S01triggerhappy	 S02ssh
K01cgroup-bin	 README       S02cron		 S03drbd
K01dhcpcd	 S01bootlogs  S02dbus		 S04corosync
K01ifplugd	 S01motd      S02dphys-swapfile  S05plymouth
K01lightdm	 S01rsyslog   S02ntp		 S05rc.local
K06nfs-common	 S01sudo      S02rsync		 S05rmnologin

inserire l'avvio del drbd qui:

vi /etc/rcS.d/S12mountnfs.sh