Minimum Viable Cluster 9 minutes readThe is a spectrum for availability solutions, where you fit depends on what assumptions you can make about your application stack.
Receiving Reliable Notification of Cluster Events 3 minutes readA more reliable way to receive notification of cluster events is coming in Pacemaker 1.1.14.
Fencing for Fun and Profit with SBD 6 minutes readSBD can be particularly useful in environments where traditional fencing mechanisms are not possible.
Double Failure - Get out of Jail Free? Not so Fast less than 1 minute readIt’s tempting to explain away some recovery scenarios, but it’s not always appropriate.
Life at the Intersection of Pets and Cattle 5 minutes readThe theory goes that pets have no place in the server room. Everything should be stateless and replicated. If one copy dies, who cares, there are 100 more.
Photo credit: WeGraphics Photo credit: WeGraphics