Managing Serviceguard Eighteenth Edition, September 2010

• A package in maintenance mode still has its configured (or default) weight,
meaning that its weight, if any, is counted against the node's capacity; this applies
whether the package is up or down. (See “About Package Weights” (page 187) for
a discussion of weights and capacities.)
• Node-wide and cluster-wide events affect the package as follows:
— If the node the package is running on is halted or crashes, the package will no
longer be in maintenance mode but will not be automatically started.
— If the cluster is halted or crashes, the package will not be in maintenance mode
when the cluster comes back up. Serviceguard will attempt to start it if auto_run
is set to yes in the package configuration file.
• If node_fail_fast_enabled (page 290) is set to yes, Serviceguard will not halt the node
under any of the following conditions:
— Subnet failure
— EMS resource failure
— A script does not exist or cannot run because of file permissions
— A script times out
— The limit of a restart count is exceeded
Rules for a Package in Maintenance Mode or Partial-Startup Maintenance Mode
IMPORTANT: See the latest Serviceguard release notes for important information
about version requirements for package maintenance.
• The package must have package switching disabled before you can put it in
maintenance mode.
• You can put a package in maintenance mode only on one node.
— The node must be active in the cluster and must be eligible to run the package
(on the package's node_name list).
— If the package is not running, you must specify the node name when you run
cmmodpkg (1m) to put the package in maintenance mode.
— If the package is running, you can put it into maintenance only on the node on
which it is running.
— While the package is in maintenance mode on a node, you can run the package
only on that node.
• You cannot put a package in maintenance mode, or take it out maintenance mode,
if doing so will cause another running package to halt.
• Since package failures are ignored while in maintenance mode, you can take a
running package out of maintenance mode only if the package is healthy.
Serviceguard checks the state of the package’s services, subnets and EMS resources
to determine if the package is healthy. If it is not, you must halt the package before
taking it out of maintenance mode.
Managing Packages and Services 355