add function to cloud-init to run cloud-config style modules

add 'hostname' cloud-config option for setting hostname
make rsyslog and resizefs run at cloud-init time

1 files changed, 38 insertions, 0 deletions

diff --git a/cloudinit/CloudConfig/cc_set_hostname.py b/cloudinit/CloudConfig/cc_set_hostname.py
new file mode 100644
index 00000000..34621e97
--- /dev/null
+++ b/cloudinit/CloudConfig/cc_set_hostname.py
@@ -0,0 +1,38 @@
+# vi: ts=4 expandtab
+#
+#    Copyright (C) 2011 Canonical Ltd.
+#
+#    Author: Scott Moser <scott.moser@canonical.com>
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License version 3, as
+#    published by the Free Software Foundation.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+import cloudinit.util as util
+import subprocess
+
+def handle(name,cfg,cloud,log,args):
+    if util.get_cfg_option_bool(cfg,"preserve_hostname",False):
+        log.debug("preserve_hostname is set. not setting hostname")
+        return(True)
+
+    try:
+        hostname = util.get_cfg_option_str(cfg,"hostname",cloud.get_hostname())
+        set_hostname(hostname, log)
+    except Exception, e:
+        util.logexc(log)
+        log.warn("failed to set hostname\n")
+
+    return(True)
+
+def set_hostname(hostname, log):
+    subprocess.Popen(['hostname', hostname]).communicate()
+    util.write_file("/etc/hostname","%s\n" % hostname, 0644)
+    log.debug("populated /etc/hostname with %s on first boot", hostname)