The most notable changes/fixes since Pacemaker-1.1.10 include:
- attrd: Implementation of a truely atomic attrd for use with corosync 2.x
- cib: Allow values to be added/updated and removed in a single update
- cib: Support XML comments in diffs
- Core: Allow blackbox logging to be disabled with SIGUSR2
- crmd: Do not block on proxied calls from pacemaker_remoted
- crmd: Enable cluster-wide throttling when the cib heavily exceeds its target load
- crmd: Use the load on our peers to know how many jobs to send them
- crm_mon: add --hide-headers option to hide all headers
- crm_report: Collect logs directly from journald if available
- Fencing: On timeout, clean up the agent's entire process group
- Fencing: Support agents that need the host to be unfenced at startup
- ipc: Raise the default buffer size to 128k
- PE: Add a special attribute for distinguishing between real nodes and containers in constraint rules
- PE: Allow location constraints to take a regex pattern to match against resource IDs
- pengine: Distinguish between the agent being missing and something the agent needs being missing
- remote: Properly version the remote connection protocol
- services: Detect missing agents and permission errors before forking
- Bug cl#5171 - pengine: Don't prevent clones from running due to dependant resources
- Bug cl#5179 - Corosync: Attempt to retrieve a peer's node name if it is not already known
- Bug cl#5181 - corosync: Ensure node IDs are written to the CIB as unsigned integers
If you are a user of pacemaker_remoted, you should take the time to read about changes to the online wire protocol that are present in this release.