corosync-notifyd - Man Page

corosync-notifyd [-f] [-l] [-o] [-s] [-m manager] [-d] [-h]

corosync-notifyd uses corosync API to listen for important cluster events and can log them, generate dbus signals or generate snmp traps.

-f

Start application in foreground.

-l

Log all events.

-o

Print events to stdout (turns on -l).

-s

Send SNMP traps on all events.

-m

Set the SNMP Manager IP address (defaults to localhost).

-n

No reverse DNS lookup on cmap member change events.

-d

Send DBUS signals on all events.

-h

Print this help.

$ corosync-notifyd -o
corosync-notifyd[18505]: troll[23374016] corosync-notify:18505:12 is now connected to corosync
corosync-notifyd[18505]: troll[23374016] corosync-notify:18505:13 is now disconnected from corosync
corosync-notifyd[18505]: troll[23374016] is now quorate
corosync-notifyd[18505]: r2[1550100672] ip:192.168.100.92 joined
corosync-notifyd[18505]: r2[1550100672] ip:192.168.100.92 left

$ corosync-notifyd -d

Note this output below is from "dbus-monitor --system"

signal sender=:1.216 -> dest=(null destination) serial=2 path=/com/redhat/cluster/corosync;
interface=com.redhat.cluster.corosync; member=ConnectionStateChange
  string "troll"
  uint32 23374016
  string "corosync-notify:18900:12"
  string "connected"
signal sender=:1.216 -> dest=(null destination) serial=3 path=/com/redhat/cluster/corosync;
interface=com.redhat.cluster.corosync; member=ConnectionStateChange
  string "troll"
  uint32 23374016
  string "corosync-notify:18900:13"
  string "disconnected"
signal sender=:1.216 -> dest=(null destination) serial=4 path=/com/redhat/cluster/corosync;
interface=com.redhat.cluster.corosync; member=QorumStateChange
  string "troll"
  uint32 23374016
  string "quorate"
signal sender=:1.216 -> dest=(null destination) serial=5 path=/com/redhat/cluster/corosync;
interface=com.redhat.cluster.corosync; member=NodeStateChange
  string "r2"
  uint32 1550100672
  string "192.168.100.92"
  string "joined"
signal sender=:1.216 -> dest=(null destination) serial=6 path=/com/redhat/cluster/corosync;
interface=com.redhat.cluster.corosync; member=NodeStateChange
  string "r2"
  uint32 1550100672
  string "192.168.100.92"
  string "left"

corosync(8), corosync-cmapctl(8), dbus-monitor(1),

Angus Salkeld