ntp: fix configuration template rendering for openSUSE and SLES

Add opensuse distro support to cc_ntp module.

LP: #1726572

4 files changed, 121 insertions, 14 deletions

diff --git a/cloudinit/config/cc_ntp.py b/cloudinit/config/cc_ntp.py
index d43d060c..f50bcb35 100644
--- a/cloudinit/config/cc_ntp.py
+++ b/cloudinit/config/cc_ntp.py
@@ -23,7 +23,7 @@ frequency = PER_INSTANCE
 NTP_CONF = '/etc/ntp.conf'
 TIMESYNCD_CONF = '/etc/systemd/timesyncd.conf.d/cloud-init.conf'
 NR_POOL_SERVERS = 4
-distros = ['centos', 'debian', 'fedora', 'opensuse', 'ubuntu']
+distros = ['centos', 'debian', 'fedora', 'opensuse', 'sles', 'ubuntu']
 
 
 # The schema definition for each cloud-config module is a strict contract for
@@ -174,8 +174,13 @@ def rename_ntp_conf(config=None):
 
 def generate_server_names(distro):
     names = []
+    pool_distro = distro
+    # For legal reasons x.pool.sles.ntp.org does not exist,
+    # use the opensuse pool
+    if distro == 'sles':
+        pool_distro = 'opensuse'
     for x in range(0, NR_POOL_SERVERS):
-        name = "%d.%s.pool.ntp.org" % (x, distro)
+        name = "%d.%s.pool.ntp.org" % (x, pool_distro)
         names.append(name)
     return names
 
diff --git a/templates/ntp.conf.opensuse.tmpl b/templates/ntp.conf.opensuse.tmpl
new file mode 100644
index 00000000..f3ab565f
--- /dev/null
+++ b/templates/ntp.conf.opensuse.tmpl
@@ -0,0 +1,88 @@
+## template:jinja
+
+##
+## Radio and modem clocks by convention have addresses in the 
+## form 127.127.t.u, where t is the clock type and u is a unit 
+## number in the range 0-3. 
+##
+## Most of these clocks require support in the form of a 
+## serial port or special bus peripheral. The particular  
+## device is normally specified by adding a soft link 
+## /dev/device-u to the particular hardware device involved, 
+## where u correspond to the unit number above. 
+## 
+## Generic DCF77 clock on serial port (Conrad DCF77)
+## Address:     127.127.8.u
+## Serial Port: /dev/refclock-u
+##  
+## (create soft link /dev/refclock-0 to the particular ttyS?)
+##
+# server 127.127.8.0 mode 5 prefer
+
+##
+## Undisciplined Local Clock. This is a fake driver intended for backup
+## and when no outside source of synchronized time is available.
+##
+# server 127.127.1.0		# local clock (LCL)
+# fudge  127.127.1.0 stratum 10	# LCL is unsynchronized
+
+##
+## Add external Servers using
+## # rcntpd addserver <yourserver>
+## The servers will only be added to the currently running instance, not
+## to /etc/ntp.conf.
+##
+{% if pools %}# pools
+{% endif %}
+{% for pool in pools -%}
+pool {{pool}} iburst
+{% endfor %}
+{%- if servers %}# servers
+{% endif %}
+{% for server in servers -%}
+server {{server}} iburst
+{% endfor %}
+
+# Access control configuration; see /usr/share/doc/packages/ntp/html/accopt.html for
+# details.  The web page <http://support.ntp.org/bin/view/Support/AccessRestrictions>
+# might also be helpful.
+#
+# Note that "restrict" applies to both servers and clients, so a configuration
+# that might be intended to block requests from certain clients could also end
+# up blocking replies from your own upstream servers.
+
+# By default, exchange time with everybody, but don't allow configuration.
+restrict -4 default notrap nomodify nopeer noquery
+restrict -6 default notrap nomodify nopeer noquery
+
+# Local users may interrogate the ntp server more closely.
+restrict 127.0.0.1
+restrict ::1
+
+# Clients from this (example!) subnet have unlimited access, but only if
+# cryptographically authenticated.
+#restrict 192.168.123.0 mask 255.255.255.0 notrust
+
+##
+## Miscellaneous stuff
+##
+
+driftfile /var/lib/ntp/drift/ntp.drift # path for drift file
+
+logfile   /var/log/ntp		# alternate log file
+# logconfig =syncstatus + sysevents
+# logconfig =all
+
+# statsdir /tmp/		# directory for statistics files
+# filegen peerstats  file peerstats  type day enable
+# filegen loopstats  file loopstats  type day enable
+# filegen clockstats file clockstats type day enable
+
+#
+# Authentication stuff
+#
+keys /etc/ntp.keys		# path for keys file
+trustedkey 1			# define trusted keys
+requestkey 1			# key (7) for accessing server variables
+controlkey 1			# key (6) for accessing server variables
+
diff --git a/templates/ntp.conf.sles.tmpl b/templates/ntp.conf.sles.tmpl
index 5c5fc4db..f3ab565f 100644
--- a/templates/ntp.conf.sles.tmpl
+++ b/templates/ntp.conf.sles.tmpl
@@ -1,17 +1,5 @@
 ## template:jinja
 
-################################################################################
-## /etc/ntp.conf
-##
-## Sample NTP configuration file.
-## See package 'ntp-doc' for documentation, Mini-HOWTO and FAQ.
-## Copyright (c) 1998 S.u.S.E. GmbH Fuerth, Germany.
-##
-## Author: Michael Andres,  <ma@suse.de>
-##         Michael Skibbe,  <mskibbe@suse.de>
-##
-################################################################################
-
 ##
 ## Radio and modem clocks by convention have addresses in the 
 ## form 127.127.t.u, where t is the clock type and u is a unit 
diff --git a/tests/unittests/test_handler/test_handler_ntp.py b/tests/unittests/test_handler/test_handler_ntp.py
index 3abe5786..28a8455d 100644
--- a/tests/unittests/test_handler/test_handler_ntp.py
+++ b/tests/unittests/test_handler/test_handler_ntp.py
@@ -430,5 +430,31 @@ class TestNtp(FilesystemMockingTestCase):
             "[Time]\nNTP=192.168.2.1 192.168.2.2 0.mypool.org \n",
             content.decode())
 
+    def test_write_ntp_config_template_defaults_pools_empty_lists_sles(self):
+        """write_ntp_config_template defaults pools servers upon empty config.
+
+        When both pools and servers are empty, default NR_POOL_SERVERS get
+        configured.
+        """
+        distro = 'sles'
+        mycloud = self._get_cloud(distro)
+        ntp_conf = self.tmp_path('ntp.conf', self.new_root)  # Doesn't exist
+        # Create ntp.conf.tmpl
+        with open('{0}.tmpl'.format(ntp_conf), 'wb') as stream:
+            stream.write(NTP_TEMPLATE)
+        with mock.patch('cloudinit.config.cc_ntp.NTP_CONF', ntp_conf):
+            cc_ntp.write_ntp_config_template({}, mycloud, ntp_conf)
+        content = util.read_file_or_url('file://' + ntp_conf).contents
+        default_pools = [
+            "{0}.opensuse.pool.ntp.org".format(x)
+            for x in range(0, cc_ntp.NR_POOL_SERVERS)]
+        self.assertEqual(
+            "servers []\npools {0}\n".format(default_pools),
+            content.decode())
+        self.assertIn(
+            "Adding distro default ntp pool servers: {0}".format(
+                ",".join(default_pools)),
+            self.logs.getvalue())
+
 
 # vi: ts=4 expandtab