add suport for setting debconf selections through debconf-set-selections

cloudinit/CloudConfig/cc_apt_update_upgrade.py

@@ -1,5 +1,6 @@
 import cloudinit.util as util
 import subprocess
+import traceback
 import os
 
 def handle(name,cfg,cloud,log,args):
@@ -23,6 +24,15 @@ def handle(name,cfg,cloud,log,args):
         for e in errors:
             log.warn("Source Error: %s\n" % ':'.join(e))
 
+    dconf_sel = util.get_cfg_option_str(cfg, 'debconf_selections', False)
+    if dconf_sel:
+        log.debug("setting debconf selections per cloud config")
+        try:
+            util.subp(('debconf-set-selections', '-'), dconf_sel)
+        except:
+            log.error("Failed to run debconf-set-selections")
+            log.debug(traceback.format_exc())
+
     pkglist = []
     if 'packages' in cfg:
         if isinstance(cfg['packages'],list):

doc/examples/cloud-config-TODO.txt

@@ -18,18 +18,3 @@ apt_conf:
  - content: |
     DPkg::Pre-Install-Pkgs:: "/usr/sbin/dpkg-preconfigure --apt -p critical|| true";
 
-# Provide debconf answers
-#
-# See debconf-set-selections man page.
-#
-# Default: none
-# 
-debconf_selections: |     # Need to perserve newlines
-        # Force debconf priority to critical.
-        debconf debconf/priority select critical
-
-        # Override default frontend to readline, but allow user to select.
-        debconf debconf/frontend select readline
-        debconf debconf/frontend seen false
- 
-

doc/examples/cloud-config.txt

@@ -212,3 +212,17 @@ cloud_config_modules:
 #  can easily be imported into the configured user
 # This can be a single string ('smoser') or a list ([smoser, kirkland])
 ssh_import_id: [smoser]
+
+# Provide debconf answers
+#
+# See debconf-set-selections man page.
+#
+# Default: none
+# 
+debconf_selections: |     # Need to perserve newlines
+        # Force debconf priority to critical.
+        debconf debconf/priority select critical
+
+        # Override default frontend to readline, but allow user to select.
+        debconf debconf/frontend select readline
+        debconf debconf/frontend seen false