add initial logging support

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

1 files changed, 8 insertions, 2 deletions

diff --git a/cloud-init-cfg.py b/cloud-init-cfg.py
index 8684c532..2ef9bb04 100755
--- a/cloud-init-cfg.py
+++ b/cloud-init-cfg.py
@@ -19,6 +19,9 @@
 
 import sys
 import cloudinit
+import cloudinit.CloudConfig
+import logging
+import os
 
 def Usage(out = sys.stdout):
     out.write("Usage: %s name\n" % sys.argv[0])
@@ -33,8 +36,11 @@ def main():
     name=sys.argv[1]
     run_args=sys.argv[2:]
 
-    import cloudinit.CloudConfig
-    import os
+    cloudinit.logging_set_from_cfg_file()
+    log = logging.getLogger()
+    log.info("cloud-init-cfg %s" % sys.argv[1:])
+
+    cloud = cloudinit.CloudInit()
 
     cfg_path = cloudinit.cloud_config
     cfg_env_name = cloudinit.cfg_env_name