Have you tried with ping and a location constraint for avoiding hosts that cannot ping an extrrnal system.<div id="yMail_cursorElementTracker_1636965251531"><br></div><div id="yMail_cursorElementTracker_1636965251720">Best Regards,</div><div id="yMail_cursorElementTracker_1636965254781">Strahil Nikolov<br> <br> <blockquote style="margin: 0 0 20px 0;"> <div style="font-family:Roboto, sans-serif; color:#6D00F6;"> <div>On Mon, Nov 15, 2021 at 0:07, S Rogers</div><div><sa.rogers1342@gmail.com> wrote:</div> </div> <div style="padding: 10px 0 0 20px; margin: 10px 0 0 0; border-left: 1px solid #6D00F6;"> Using on-fail=fence is what I initially tried, but it doesn't work <br clear="none">unfortunately.<br clear="none"><br clear="none">It looks like this is because the ethmonitor monitor operation won't <br clear="none">actually fail when it detects a downed interface. It'll only fail if it <br clear="none">is unable to update the CIB, as per this comment: <br clear="none"><a shape="rect" href="https://github.com/ClusterLabs/resource-agents/blob/4824a7a83765a0596b7d9856d00102f53c8ce123/heartbeat/ethmonitor#L518" target="_blank">https://github.com/ClusterLabs/resource-agents/blob/4824a7a83765a0596b7d9856d00102f53c8ce123/heartbeat/ethmonitor#L518</a><div class="yqt6499098885" id="yqtfd04967"><br clear="none"><br clear="none">_______________________________________________<br clear="none">Manage your subscription:<br clear="none"><a shape="rect" href="https://lists.clusterlabs.org/mailman/listinfo/users" target="_blank">https://lists.clusterlabs.org/mailman/listinfo/users</a><br clear="none"><br clear="none">ClusterLabs home: <a shape="rect" href="https://www.clusterlabs.org/" target="_blank">https://www.clusterlabs.org/</a><br clear="none"></div> </div> </blockquote></div>