Each service which should be manageable by chkconfig needs two or more commented lines
added to its init.d
script. The first line tells chkconfig what runlevels the service should be started in by default, as well as
the start and stop priority levels. If the service should not, by default, be started in any runlevels, a -
should be used in place of the runlevels list. The second line contains a description for the service, and may
be extended across multiple lines with backslash continuation.
For example, random.init has these three lines:
# chkconfig: 2345 20 80
# description: Saves and restores system entropy pool for \
# higher quality random number generation.
This says that the random script should be started in levels 2, 3, 4, and 5, that its start priority should be
20, and that its stop priority should be 80. You should be able to figure out what the description says; the \
causes the line to be continued. The extra space in front of the line is ignored.
chkconfig also supports LSB-style init stanzas, and will apply them in preference to "chkconfig:" lines where
available. A LSB stanza looks like:
### BEGIN INIT INFO
# Provides: foo
# Required-Start: bar
# Defalt-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Description: Foo init script
### END INIT INFO
In this case, the start priority of "foo" would be changed such that it is higher than the "bar" start prior-
ity, if "bar" is enabled. Care must be taken when adding dependencies, as they can cause vast shifts in the
start and stop priorities of many scripts.