Re: [ClusterLabs] Howto restart resource
On 08/29/2016 04:03 PM, Ken Gaillot wrote: > On 08/29/2016 01:38 AM, Stefano Ruberti wrote: >> Dear all, >> >> I have following situation and I need an advice from you: >> >> in my Active/Passive Cluster (Ubuntu_16.04 corosync + pacemaker , no pcs) >> >> Node_ANode_B >> Resource1Resource1 >> Resource2Resource2 >> Resource3Resource3 >> rsyslogd rsyslogd >> >> 1. is possible to configure rsyslogd to restarting when node (Node_A or >> Node_B) go on-line and take resource? >> >> >> Best Regards >> Stefano > Is rsyslogd a cluster resource? That might not be ideal, since pacemaker > itself needs to use syslog (unless you've configured it not to), and you > probably want syslog running even if the cluster services are stopped > (for an upgrade, for example). > > If your goal is simply to reload rsyslogd when a resource state changes, > I would think one of these approaches would be suitable: > > Use the new alerts interface (pacemaker 1.1.15+) with an alert script > that reloads rsyslogd at the desired events; Be aware that you are not root right away inside these alert-scripts! > > Or, write a custom resource agent that reloads rsyslogd, and set up > colocation/ordering constraints between it and the desired resources. > Pacemaker will then "start" it after starting the resources, and "stop" > it before stopping the resources. Note that the agent must know whether > it is "running", and there is a ha_pseudo_resource() function in the OCF > libraries to handle that. > > ___ > Users mailing list: Users@clusterlabs.org > http://clusterlabs.org/mailman/listinfo/users > > Project Home: http://www.clusterlabs.org > Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > Bugs: http://bugs.clusterlabs.org ___ Users mailing list: Users@clusterlabs.org http://clusterlabs.org/mailman/listinfo/users Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org
Re: [ClusterLabs] Howto restart resource
On 08/29/2016 01:38 AM, Stefano Ruberti wrote: > Dear all, > > I have following situation and I need an advice from you: > > in my Active/Passive Cluster (Ubuntu_16.04 corosync + pacemaker , no pcs) > > Node_ANode_B > Resource1Resource1 > Resource2Resource2 > Resource3Resource3 > rsyslogd rsyslogd > > 1. is possible to configure rsyslogd to restarting when node (Node_A or > Node_B) go on-line and take resource? > > > Best Regards > Stefano Is rsyslogd a cluster resource? That might not be ideal, since pacemaker itself needs to use syslog (unless you've configured it not to), and you probably want syslog running even if the cluster services are stopped (for an upgrade, for example). If your goal is simply to reload rsyslogd when a resource state changes, I would think one of these approaches would be suitable: Use the new alerts interface (pacemaker 1.1.15+) with an alert script that reloads rsyslogd at the desired events; Or, write a custom resource agent that reloads rsyslogd, and set up colocation/ordering constraints between it and the desired resources. Pacemaker will then "start" it after starting the resources, and "stop" it before stopping the resources. Note that the agent must know whether it is "running", and there is a ha_pseudo_resource() function in the OCF libraries to handle that. ___ Users mailing list: Users@clusterlabs.org http://clusterlabs.org/mailman/listinfo/users Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org
[ClusterLabs] Howto restart resource
Dear all, I have following situation and I need an advice from you: in my Active/Passive Cluster (Ubuntu_16.04 corosync + pacemaker , no pcs) Node_ANode_B Resource1Resource1 Resource2Resource2 Resource3Resource3 rsyslogd rsyslogd 1. is possible to configure rsyslogd to restarting when node (Node_A or Node_B) go on-line and take resource? Best Regards Stefano ___ Users mailing list: Users@clusterlabs.org http://clusterlabs.org/mailman/listinfo/users Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org
[ClusterLabs] Howto restart resource
Dear all, I have following situation and I need an advice from you: in my Active/Passive Cluster (Ubuntu_16.04 corosync + pacemaker , no pcs) Node_ANode_B Resource1Resource1 Resource2Resource2 Resource3Resource3 rsyslogd rsyslogd 1. is possible to configure a restart of rsyslogd when node (Node_A or Node_B) go on-line and take resource? Best Regards Stefano ___ Users mailing list: Users@clusterlabs.org http://clusterlabs.org/mailman/listinfo/users Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org
