NDB memcache engine is
initialized, it writes a message including a timestamp and version
number to its log file, as shown here:
12-Oct-2011 13:40:00 PDT NDB Memcache 5.5.15-ndb-7.2.1 started [NDB 7.2.1; MySQL 5.5.15]
It also logs its attempt to connect to a primary cluster:
Contacting primary management server (localhost:1186) ... ·Connected to "localhost:1186" as node id 4.
Upon successfully fetching initial configuration data, the memcache engine logs a summary message describing the configuration similar to what is shown here:
Retrieved 3 key prefixes for server role "default_role" The default behavior is that: GET uses NDB only SET uses NDB only DELETE uses NDB only The 2 explicitly defined key prefixes are "mc:" () and "t:" (demo_table_tabs) Server started with 4 threads.
The memcache engine also logs the establishment of each additional cluster connection, as shown here:
Connected to "" as node id 5.
priming the pump... message indicates that
the engine is about to prefetch a pool of transaction objects (API
Connect Records). It is followed by a
message indicating how much time was used by prefetching. The
server is not ready to respond to clients until after the
prefetching is completed.
Priming the pump ... Scheduler: using 2 connections to cluster 0 Scheduler: starting for 1 cluster; c0,f0,t1 done [0.579 sec].
Once the NDB engine has finished initializing, memcached prints a message verifying that the engine was loaded, and enumerating some of its features:
Loaded engine: NDB Memcache 5.5.15-ndb-7.2.1 Supplying the following features: compare and swap, persistent storage, LRU
If online reconfiguration is enabled, the NDB engine logs each reconfiguration, along with a summary of the new configuration, similar to what is shown here:
Received update to server role default_role Retrieved 3 key prefixes for server role "default_role". The default behavior is that: GET uses NDB only SET uses NDB only DELETE uses NDB only. The 2 explicitly defined key prefixes are "mc:" () and "t:" (demo_table_tabs) ONLINE RECONFIGURATION COMPLETE
On shutdown, memcached logs the shutdown sequence'a initialization and completion, and the NDB engine's scheduler logs its own shutdown as well:
Initiating shutdown Shutting down scheduler. Shutdown completed.