xos/tools/openstack-healthcheck.py

# Copyright 2017-present Open Networking Foundation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


#! /usr/bin/env python

"""
    Check the status of libvirt, openstack-nova-compute, and
    quantum-openvswitch-agent. If these services are enabled and have failed,
    then restart them.
"""

from __future__ import print_function
import os
import sys
import subprocess
import time


def get_systemd_status(service):
    p = subprocess.Popen(
        ["/bin/systemctl", "is-active", service],
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE,
    )
    (out, err) = p.communicate()
    out = out.strip()
    return out


libvirt_enabled = os.system("systemctl -q is-enabled libvirtd.service") == 0
nova_compute_enabled = (
    os.system("systemctl -q is-enabled openstack-nova-compute.service") == 0
)
openvswitch_agent_enabled = (
    os.system("systemctl -q is-enabled quantum-openvswitch-agent.service") == 0
)

print("enabled:")
print("  libvirtd=", libvirt_enabled)
print("  openstack-nova-compute=", nova_compute_enabled)
print("  quantum-openvswitch-agent=", openvswitch_agent_enabled)

if (
    (not libvirt_enabled)
    or (not nova_compute_enabled)
    or (not openvswitch_agent_enabled)
):
    print("services are not enabled. exiting")
    sys.exit(0)

libvirt_status = get_systemd_status("libvirtd.service")
nova_compute_status = get_systemd_status("openstack-nova-compute.service")
openvswitch_agent_status = get_systemd_status("quantum-openvswitch-agent.service")

print("status:")
print("  libvirtd=", libvirt_status)
print("  openstack-nova-compute=", nova_compute_status)
print("  quantum-openvswitch-agent=", openvswitch_agent_status)

if (
    (libvirt_status == "failed")
    or (nova_compute_status == "failed")
    or (openvswitch_agent_status == "failed")
):
    print("services have failed. doing the big restart")
    os.system("systemctl stop openstack-nova-compute.service")
    os.system("systemctl stop quantum-openvswitch-agent.service")
    os.system("systemctl stop libvirtd.service")
    time.sleep(5)
    os.system("systemctl start libvirtd.service")
    time.sleep(5)
    os.system("systemctl start quantum-openvswitch-agent.service")
    time.sleep(5)
    os.system("systemctl start openstack-nova-compute.service")
    print("done")