dns-forwarding: T2298: verify pdns path is exists

1 files changed, 11 insertions, 4 deletions

diff --git a/src/conf_mode/host_name.py b/src/conf_mode/host_name.py
index a669580ae..f181a7b35 100755
--- a/src/conf_mode/host_name.py
+++ b/src/conf_mode/host_name.py
@@ -164,10 +164,17 @@ def apply(config):
     if process_named_running('snmpd'):
         call('systemctl restart snmpd.service')
 
-    # restart pdns if it is used
-    ret = run('/usr/bin/rec_control --socket-dir=/run/powerdns ping')
-    if ret == 0:
-        call('systemctl restart pdns-recursor.service')
+    # restart pdns if it is used - we check for the control dir to not raise
+    # an exception on system startup
+    #
+    #   File "/usr/lib/python3/dist-packages/vyos/configsession.py", line 128, in __run_command
+    #     raise ConfigSessionError(output)
+    # vyos.configsession.ConfigSessionError: [ system domain-name vyos.io ]
+    # Fatal: Unable to generate local temporary file in directory '/run/powerdns': No such file or directory
+    if os.path.isdir('/run/powerdns'):
+        ret = run('/usr/bin/rec_control --socket-dir=/run/powerdns ping')
+        if ret == 0:
+            call('systemctl restart pdns-recursor.service')
 
     return None