On 07/08/2016 06:15 PM, Ken Gaillot wrote: > On 07/08/2016 05:10 AM, Heiko Reimer wrote: >> Hi, >> >> i am setting up new debian 8 ha cluster with drbd, corosync and >> pacemaker with apache and mysql. In my old environment i had configured >> resources with ocf resource agents. Now i have seen that there is >> systemd. Which agent would you recommend? >> >> >> Mit freundlichen Grüßen / Best regards >> >> Heiko Reimer > > There's no one answer for all services. Some things to consider: > > * Only OCF agents can take parameters, so they may have additional > capabilities that the systemd agent doesn't. > > * Only OCF agents can be used for globally unique clones, clones that > require notifications, and multistate (master/slave) resources. > > * OCF agents are usually written to support a variety of > OSes/distributions, while systemd unit files are often tailored to the > particular system. This can give OCF an advantage if you have a variety > of OSes and want the resource agent to behave as identically as possible > on all of them, or it can give systemd an advantage if you have a > homogeneous environment and want to use OS-specific facilities as much > as possible. > > * A lot depends on the particular service. Is the OCF agent widely used > and actively developed? If so, it is more likely to have better features > and enhanced support for running in a cluster; if not, the systemd unit > may be more up-to-date with recent changes in the underlying service. > > * Your Pacemaker version matters. Pacemaker added systemd resource > support in 1.1.8, but there were significant issues until 1.1.13, and > minor but useful fixes since then. One of the more recent changes you might be interested in if experiencing problem with shutdown order when systemd-services are involved ... https://github.com/ClusterLabs/pacemaker/commit/6aae8542abedc755b90c8c49aa5c429718fd12f1 > > _______________________________________________ > Users mailing list: [email protected] > 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
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