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, 5 insertions, 5 deletions

diff --git a/cloudinit/DataSourceEc2.py b/cloudinit/DataSourceEc2.py
index ad88a704..ebee61c6 100644
--- a/cloudinit/DataSourceEc2.py
+++ b/cloudinit/DataSourceEc2.py
@@ -126,14 +126,14 @@ class DataSourceEc2(DataSource.DataSource):
                 reason = "url error [%s]" % e.reason
     
             if x == 0:
-               sys.stderr.write("waiting for metadata service at %s\n" % url)
+                cloudinit.log.warning("waiting for metadata service at %s\n" % url)
 
-            sys.stderr.write("  %s [%02s/%s]: %s\n" %
-                             (time.strftime("%H:%M:%S"), x+1, sleeps, reason))
+            cloudinit.log.warning("  %s [%02s/%s]: %s\n" %
+                (time.strftime("%H:%M:%S"), x+1, sleeps, reason))
             time.sleep(sleeptime)
 
-        sys.stderr.write("giving up on md after %i seconds\n" %
-                         int(time.time()-starttime))
+        log.critical("giving up on md after %i seconds\n" %
+                  int(time.time()-starttime))
         return False
 
     def get_public_ssh_keys(self):