Replace ntp-config and ntpd with chrony

Signed-off-by: Saikrishna Arcot <sarcot@microsoft.com>

config/main.py

@@ -7083,10 +7083,10 @@ def add_ntp_server(ctx, ntp_ip_address, association_type, iburst, version):
             ctx.fail("Invalid ConfigDB. Error: {}".format(e))
         click.echo("NTP server {} added to configuration".format(ntp_ip_address))
         try:
-            click.echo("Restarting ntp-config service...")
-            clicommon.run_command(['systemctl', 'restart', 'ntp-config'], display_cmd=False)
+            click.echo("Restarting chrony service...")
+            clicommon.run_command(['systemctl', 'restart', 'chrony'], display_cmd=False)
         except SystemExit as e:
-            ctx.fail("Restart service ntp-config failed with error {}".format(e))
+            ctx.fail("Restart service chrony failed with error {}".format(e))
 
 @ntp.command('del')
 @click.argument('ntp_ip_address', metavar='<ntp_ip_address>', required=True)
@@ -7107,10 +7107,10 @@ def del_ntp_server(ctx, ntp_ip_address):
     else:
         ctx.fail("NTP server {} is not configured.".format(ntp_ip_address))
     try:
-        click.echo("Restarting ntp-config service...")
-        clicommon.run_command(['systemctl', 'restart', 'ntp-config'], display_cmd=False)
+        click.echo("Restarting chrony service...")
+        clicommon.run_command(['systemctl', 'restart', 'chrony'], display_cmd=False)
     except SystemExit as e:
-        ctx.fail("Restart service ntp-config failed with error {}".format(e))
+        ctx.fail("Restart service chrony failed with error {}".format(e))
 
 #
 # 'sflow' group ('config sflow ...')

show/main.py

@@ -1928,22 +1928,15 @@ def bgp(verbose):
 @click.option('--verbose', is_flag=True, help="Enable verbose output")
 def ntp(ctx, verbose):
     """Show NTP information"""
-    from pkg_resources import parse_version
-    ntpstat_cmd = ["ntpstat"]
-    ntpcmd = ["ntpq", "-p", "-n"]
+    chronyc_tracking_cmd = ["chronyc", "tracking"]
+    chronyc_sources_cmd = ["chronyc", "sources"]
     if is_mgmt_vrf_enabled(ctx) is True:
-        #ManagementVRF is enabled. Call ntpq using "ip vrf exec" or cgexec based on linux version
-        os_info =  os.uname()
-        release = os_info[2].split('-')
-        if parse_version(release[0]) > parse_version("4.9.0"):
-            ntpstat_cmd = ['sudo', 'ip', 'vrf', 'exec', 'mgmt', 'ntpstat']
-            ntpcmd = ['sudo', 'ip', 'vrf', 'exec', 'mgmt', 'ntpq', '-p', '-n']
-        else:
-            ntpstat_cmd = ['sudo', 'cgexec', '-g', 'l3mdev:mgmt', 'ntpstat']
-            ntpcmd = ['sudo', 'cgexec', '-g', 'l3mdev:mgmt', 'ntpq', '-p', '-n']
+        #ManagementVRF is enabled. Call chronyc using "ip vrf exec" based on linux version
+        chronyc_tracking_cmd = ["sudo", "ip", "vrf", "exec", "mgmt"] + chronyc_tracking_cmd
+        chronyc_sources_cmd = ["sudo", "ip", "vrf", "exec", "mgmt"] + chronyc_sources_cmd
 
-    run_command(ntpstat_cmd, display_cmd=verbose)
-    run_command(ntpcmd, display_cmd=verbose)
+    run_command(chronyc_tracking_cmd, display_cmd=verbose)
+    run_command(chronyc_sources_cmd, display_cmd=verbose)
 
 #
 # 'uptime' command ("show uptime")

tests/conftest.py

@@ -27,7 +27,6 @@
 sys.path.insert(0, modules_path)
 
 generated_services_list = [
-    'ntp-config.service',
     'warmboot-finalizer.service',
     'watchdog-control.service',
     'rsyslog-config.service',