-
- def apply_config_lxc(self, lxc_name, waittime=5, retries=12):
- """Generate and apply VPP configuration for node in a container.
-
- Use data from calls to this class to form a startup.conf file and
- replace /etc/vpp/startup.conf with it on node inside a container.
-
- :param lxc_name: LXC container name.
- :param waittime: Time to wait for VPP to restart (default 5 seconds).
- :param retries: Number of times (default 12) to re-try waiting.
- :type lxc_name: str
- :type waittime: int
- :type retries: int
- :raises RuntimeError: If writing config file failed, or restarting of
- VPP failed.
- """
- self.dump_config(self._nodeconfig)
-
- ssh = SSH()
- ssh.connect(self._node)
-
- # We're using this "| sudo tee" construct because redirecting
- # a sudo's output ("sudo echo xxx > /path/to/file") does not
- # work on most platforms...
- (ret, _, _) = \
- ssh.exec_command_lxc('echo "{0}" | sudo tee {1}'.
- format(self._vpp_config,
- self._vpp_config_filename), lxc_name)
-
- if ret != 0:
- raise RuntimeError('Writing config file failed in {0} to node {1}'.
- format(lxc_name, self._hostname))
-
- # Instead of restarting, we'll do separate start and stop
- # actions. This way we don't care whether VPP was running
- # to begin with.
- ssh.exec_command_lxc('service {0} stop'.
- format(self._vpp_service_name), lxc_name)
- (ret, _, _) = \
- ssh.exec_command_lxc('service {0} start'.
- format(self._vpp_service_name), lxc_name)
- if ret != 0:
- raise RuntimeError('Restarting VPP failed in {0} on node {1}'.
- format(lxc_name, self._hostname))
-
- # Sleep <waittime> seconds, up to <retry> times,
- # and verify if VPP is running.
- for _ in range(retries):
- time.sleep(waittime)
- (ret, _, _) = \
- ssh.exec_command_lxc('echo show hardware-interfaces | '
- 'nc 0 5002 || echo "VPP not yet running"',
- lxc_name)
- if ret == 0:
- break
- else:
- raise RuntimeError('VPP failed to restart in {0} on node {1}'.
- format(lxc_name, self._hostname))