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-rwxr-xr-xsrc/op_mode/restart_frr.py40
1 files changed, 36 insertions, 4 deletions
diff --git a/src/op_mode/restart_frr.py b/src/op_mode/restart_frr.py
index d94465603..085b8c355 100755
--- a/src/op_mode/restart_frr.py
+++ b/src/op_mode/restart_frr.py
@@ -24,6 +24,8 @@ from logging.handlers import SysLogHandler
# some default values
watchfrr = '/usr/lib/frr/watchfrr.sh'
vtysh = '/usr/bin/vtysh'
+frrconfig = '/etc/frr/frr.conf'
+frrconfig_tmp = '/etc/frr/frr.conf.temporary'
# configure logging
logger = logging.getLogger(__name__)
@@ -32,15 +34,32 @@ logs_handler.setFormatter(logging.Formatter('%(filename)s: %(message)s'))
logger.addHandler(logs_handler)
logger.setLevel(logging.INFO)
+# save or restore current config file
+def _save_and_restore(action):
+ if action == "save":
+ command = "sudo mv {} {}".format(frrconfig, frrconfig_tmp)
+ logmsg = "Permanent configuration saved to {}".format(frrconfig_tmp)
+ if action == "restore":
+ command = "sudo mv {} {}".format(frrconfig_tmp, frrconfig)
+ logmsg = "Permanent configuration restored from {}".format(frrconfig_tmp)
+
+ return_code = subprocess.call(command, shell=True)
+ if not return_code == 0:
+ logger.error("Failed to rename permanent config: \"{}\" returned exit code: {}".format(command, return_code))
+ return False
+
+ logger.info(logmsg)
+ return True
+
# write active config to file
def _write_config():
command = "sudo {} -n -c write ".format(vtysh)
return_code = subprocess.call(command, shell=True)
if not return_code == 0:
logger.error("Failed to save active config: \"{}\" returned exit code: {}".format(command, return_code))
- print("Failed to save active config: \"{}\" returned exit code: {}".format(command, return_code))
- sys.exit(1)
- logger.info("Active config saved to /etc/frr/frr.conf")
+ return False
+ logger.info("Active config saved to {}".format(frrconfig))
+ return True
# check if daemon is running
def _daemon_check(daemon):
@@ -83,7 +102,16 @@ cmd_args = cmd_args_parser.parse_args()
# main logic
# restart daemon
if cmd_args.action == 'restart':
- _write_config()
+ if not _save_and_restore('save'):
+ logger.error("Failed to rename permanent comfig")
+ print("Failed to rename permanent comfig")
+ sys.exit(1)
+
+ if not _write_config():
+ print("Failed to save active config")
+ _save_and_restore('restore')
+ sys.exit(1)
+
if cmd_args.daemon:
# check all daemons if they are running
if not _check_args_daemon(cmd_args.daemon):
@@ -93,11 +121,15 @@ if cmd_args.action == 'restart':
for daemon in cmd_args.daemon:
if not _daemon_restart(daemon):
print("Failed to restart daemon: {}".format(daemon))
+ _save_and_restore('restore')
sys.exit(1)
else:
# run command to restart FRR
if not _daemon_restart(''):
print("Failed to restart FRRouting")
+ _save_and_restore('restore')
sys.exit(1)
+ _save_and_restore('restore')
+
sys.exit(0)