+ command = 'modprobe {module}'.format(module=module)
+ message = 'Failed to load {module} on host {host}'.\
+ format(module=module, host=node['host'])
+
+ exec_cmd_no_error(node, command, timeout=30, sudo=True, message=message)
+
+ @staticmethod
+ def install_vpp_on_all_duts(nodes, vpp_pkg_dir):
+ """Install VPP on all DUT nodes. Start the VPP service in case of
+ systemd is not available or does not support autostart.
+
+ :param nodes: Nodes in the topology.
+ :param vpp_pkg_dir: Path to directory where VPP packages are stored.
+ :type nodes: dict
+ :type vpp_pkg_dir: str
+ :raises RuntimeError: If failed to remove or install VPP.
+ """
+ for node in nodes.values():
+ message = 'Failed to install VPP on host {host}!'.\
+ format(host=node['host'])
+ if node['type'] == NodeType.DUT:
+ command = 'ln -s /dev/null /etc/sysctl.d/80-vpp.conf || true'
+ exec_cmd_no_error(node, command, sudo=True)
+
+ command = '. /etc/lsb-release; echo "${DISTRIB_ID}"'
+ stdout, _ = exec_cmd_no_error(node, command)
+
+ if stdout.strip() == 'Ubuntu':
+ exec_cmd_no_error(node, 'apt-get purge -y "*vpp*" || true',
+ timeout=120, sudo=True)
+ exec_cmd_no_error(node, 'dpkg -i --force-all {dir}*.deb'.
+ format(dir=vpp_pkg_dir), timeout=120,
+ sudo=True, message=message)
+ exec_cmd_no_error(node, 'dpkg -l | grep vpp', sudo=True)
+ if DUTSetup.running_in_container(node):
+ DUTSetup.restart_service(node, Constants.VPP_UNIT)
+ else:
+ exec_cmd_no_error(node, 'yum -y remove "*vpp*" || true',
+ timeout=120, sudo=True)
+ exec_cmd_no_error(node, 'rpm -ivh {dir}*.rpm'.
+ format(dir=vpp_pkg_dir), timeout=120,
+ sudo=True, message=message)
+ exec_cmd_no_error(node, 'rpm -qai *vpp*', sudo=True)
+ DUTSetup.restart_service(node, Constants.VPP_UNIT)
+
+ @staticmethod
+ def running_in_container(node):
+ """This method tests if topology node is running inside container.
+
+ :param node: Topology node.
+ :type node: dict
+ :returns: True if running in docker container, false if not or failed
+ to detect.
+ :rtype: bool
+ """
+ command = "fgrep docker /proc/1/cgroup"
+ message = 'Failed to get cgroup settings.'
+ try:
+ exec_cmd_no_error(node, command, timeout=30, sudo=False,
+ message=message)
+ except RuntimeError:
+ return False
+ return True