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This replaces cloud-init-run-module (which was probably rarely or never used)
with 'cloud-init-per' which does basically the same thing, but doesn't
support "modules".
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revision 490 missed some required imports.
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the cloud-init programs are never intended to run interactively.
Some programs were being run via subprocess, and would notice that their
input was attached to a terminal (/dev/console). As a result, they
they would try to prompt the user for input (apt-add-repository)
This change simply re-opens standard input as /dev/null so any
subprocesses will not end up blocking on input.
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568139 was fixed because the test for "always" was using "is"
instead of "=="
LP: #568139
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This logging infrastructure in cloudinit:
- uses python logging
- allows user supplied config of logging.config.fileConfig format to be
supplied in /etc/cloud/cloud.cfg or in cloud_config by user data.
- by default, tries to use syslog, if that is not available, writes directly to
/var/log/cloud-init.log (syslog will not be available yet when cloud-init
runs)
- when using syslog, the doc/21-cloudinit.conf file provides a rsyslogd
file to be placed in /etc/rsyslog.d/ that will file [CLOUDINIT] messages
to /var/log/cloud-init.log
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supports user data as mime-multipart and handling types of
text/x-shellscript - execute at rc.local
text/cloud-config - feed to cloud config
text/upstart-job - add to /etc/init as upstart job
text/x-include-url - include urls as if they were in-line
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adding cat-cloud-config.conf, a debug file that just cats the config
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cloud-init-run-module handles some boilerplate code for running
items on a 'frequency'. It has the following usefulness
- a config module can be put into ec2init dir and implement a 'run'
method that takes a list of arguments and the path to a config file
- it handles invoking module.run() only at a given frequency
This is similar to karmic's ec2init's "run_once_ever" or run_once_per_ami
execute.py is an example module that executes the arguments given to it
An example usage in an upstart job would be with a 'exec' line like:
exec cloud-init-run-module once_per_ami clean-core execute rm /var/run/core
The above would then run the command 'rm /var/run/core' only once
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