lp:~johnf-inodes/mysql-mmm/socket_leak

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mysql-mmm-core: Pending requested 2011-09-07

Diff: 114 lines (+57/-3)

1 file modified

lib/Monitor/Checker/Checks.pm (+57/-3)

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148. By John Ferlito on 2011-09-07

Prevent socket leak in checkers

A particular race condition could occur on highly contended servers
which would lead to a socket leak which also manifested as a memory
leak. Once sockets leaked to the system limit connections to MySQL would
fail.

This would happen if the timeout from the ALARM signal handler happened
inside the DBI->connect call. DBI may already have created the socket
but because the signal was raised the socket is never cleaned up.

147. By Pascal Hofmann on 2010-05-07

Release 2.2.1

146. By Pascal Hofmann on 2010-05-05

Removed checks for incorrect state REPLICATION_BACKLOG (it's called REPLICATION_DELAY...).

145. By Pascal Hofmann on 2010-03-09

Added missing changelog entry.

144. By Pascal Hofmann on 2010-03-09

Release 2.2.0

143. By Pascal Hofmann on 2010-03-09

Non-buffered log4perl mail example in docs.

142. By Pascal Hofmann on 2010-03-09

Allow running multiple agents on the same host (bug #525719)

141. By Pascal Hofmann on 2010-03-09

  * Added manual mode (bug #531011), wait mode, config values 'mode' and 'wait_for_other_master'
  * Don't die at startup when no network connection is available - wait for it to appear instead (bug #416572)
  * Changed startup behaviour. mmm_mond will only go into passive mode if it detects the active_master_role on more than one host.
  * Added config value 'careful_startup' (bug #422549). If set to 0 mmm_mond won't ever switch into passive mode at startup.
  * Added check for invalid agent commands (prevents crash when mmmd_mon version 1.x talks to an 2.x agent).

140. By Pascal Hofmann on 2010-03-03

Fixed date format for 'mmm_control checks' (bug #531841)

139. By Pascal Hofmann on 2010-03-02

Cleaned up licensing information.