Steps to enable Watchdog:
1. sudo vi /etc/watchdog.conf
uncomment watchdog-device = /dev/watchdog
2. Execute the below at the shell prompt
sudo modprobe i2c-i801
sudo modprobe i2c-smbus
sudo modprobe iTCO-wdt heartbeat="60"
Note: check if blacklist-watchdog.conf is present in /etc/modprobe.d directory, and if there is a line iTCO_wdt in this file - if so please remove this link or comment it out
3. Add the following modules to vi /etc/modules è For subsequent reboots, modules are loaded by default
i2c-i801
i2c-smbus
iTCO-wdt heartbeat=60
. Toggle the watchdog once as below
[admin@versa-flexvnf: ~] $ sudo /usr/sbin/service watchdog stop
* Stopping watchdog daemon... [ OK ]
* Starting watchdog keepalive daemon... [ OK ]
[admin@versa-flexvnf: ~] $ sudo /usr/sbin/service watchdog start
* Stopping watchdog keepalive daemon... [ OK ]
* Starting watchdog daemon... [ OK ]
Check the status as below
[root@abc: aaaadmin]# sudo /usr/sbin/service watchdog status
* watchdog.service - watchdog daemon
Loaded: loaded (/lib/systemd/system/watchdog.service; enabled; vendor preset: enabled)
Active: active (running) since Tue 2023-10-03 12:55:08 GMT; 56s ago
Process: 22878 ExecStopPost=/bin/sh -c [ $run_wd_keepalive != 1 ] || false (code=exited, status=1/FAILURE)
Process: 22922 ExecStart=/bin/sh -c [ $run_watchdog != 1 ] || exec /usr/sbin/watchdog $watchdog_options (code=exited, status=0/SUCCESS)
Process: 22921 ExecStartPre=/bin/sh -c [ -z "${watchdog_module}" ] || [ "${watchdog_module}" = "none" ] || /sbin/modprobe $watchdog_module (code=exited, status=0/SUCCESS)
Main PID: 22924 (watchdog)
Tasks: 1 (limit: 4915)
CGroup: /system.slice/watchdog.service
`-22924 /usr/sbin/watchdog
Oct 03 12:55:08 abc watchdog[22924]: interface: no interface to check
Oct 03 12:55:08 abc watchdog[22924]: temperature: no sensors to check
Oct 03 12:55:08 abc watchdog[22924]: no test binary files
Oct 03 12:55:08 abc watchdog[22924]: no repair binary files
Oct 03 12:55:08 abc watchdog[22924]: error retry time-out = 60 seconds
Oct 03 12:55:08 abc watchdog[22924]: repair attempts = 1
Oct 03 12:55:08 abc watchdog[22924]: alive=/dev/watchdog heartbeat=[none] to=root no_act=no force=no
Oct 03 12:55:08 abc watchdog[22924]: watchdog now set to 60 seconds
Oct 03 12:55:08 abc watchdog[22924]: hardware watchdog identity: iTCO_wdt
Oct 03 12:55:08 abc systemd[1]: Started watchdog daemon.
[root@abc: aaaadmin]#
Note: In 22.1.3 iTCO driver/module will be auto installed on all systems that support iTCO (CSG as well as White-box devices), so the above steps would not be needed. However, watchdog will be disabled by default on the non-CSG/White-box devices and would need to be enabled via cli by executing "request system cpu-watchdog enable"
<for example>
For a white-box, initial state
cat /etc/watchdog.conf (we see watchdog-device is commented)
Enable watchdog via cli
Check /etc/watchdog.conf, you will see watchdog-device is now uncommented
You can check the status and state, it will show up as active
[root@abc: aaaadmin]# sudo /usr/sbin/service watchdog status
