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Hi Folks,</div>
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I’ve been setting up clusters on RHEL and SLES in Azure just fine for quite a while, but I’ve recently been asked to do the same thing on Ubuntu. Everything has gone fine, but my one challenge is that I can’t get the softdog watchdog driver to load at boot
time. In Azure we need to use softdog because there is no hardware watchdog available at this time. </div>
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In trying to get this to work, I’ve put “softdog” in the proper files (I’ve tried /etc/modules, /etc/modules-load.d/modules.conf and /etc/modules-load.d/softdog.conf).</div>
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I’m getting this error in the syslog:</div>
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<span style="background-color: rgb(255, 255, 255);">systemd-modules-load[175]: Module 'softdog' is deny-listed (by kmod)</span></div>
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<span style="background-color: rgb(255, 255, 255);">However, I can load the softdog module just fine after the machine boots up using modprobe. </span></div>
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<div dir="ltr" style="font-family: Aptos, sans-serif; font-size: 14.666667px;"><span style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">I</span><span style="background-color: rgb(255, 255, 255);">’</span><span style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">ve
checked the normal places for a blacklist entry (eg. /etc/modprobe.d) and there isn</span><span style="background-color: rgb(255, 255, 255);">’</span><span style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">t a single reference to softdog.
I</span><span style="background-color: rgb(255, 255, 255);">’</span><span style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">ve literally searched the whole machine for any reference to softdog (eg. find / | xargs grep softdog > /tmp/softdog.lst)
and all I got was lines from the log files. Also, there is no other watchdog kernel module loaded that I can tell, and before I load the softdog module there is no /dev/watchdog device.</span></div>
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<span style="background-color: rgb(255, 255, 255);">Other than this my cluster seems to work just fine.</span></div>
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<span style="background-color: rgb(255, 255, 255);">Any suggestions on how to fix this? </span></div>
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<span style="background-color: rgb(255, 255, 255);">BTW, there was some conversation about this on the list back in June of 2022, but there was never a mention of how to load this module automatically.</span></div>
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<span style="background-color: rgb(255, 255, 255);">Thanks,</span></div>
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<span style="background-color: rgb(255, 255, 255);">Ross Sponholtz</span></div>
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