Heat templates for deploying OpenStack
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tripleo-heat-templates/container_config_scripts/monitoring/collectd_check_health.py

95 lines
3.4 KiB

#!/usr/bin/env python3
#
# Copyright 2022 Red Hat Inc.
#
# 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.
import json
import os
import shutil
import subprocess
import sys
SOCKET = "unix:/run/podman/podman.sock"
FORMAT = ("{service: .Name, container: .Id, status: .State.Running, "
"healthy: .State.Health.Status}")
SKIP_LIST = ['_bootstrap', 'container-puppet-', '_db_sync',
'_ensure_', '_fix_', '_init_', '_map_', '_wait_',
'mysql_data_ownership', 'configure_cms_options']
def execute(cmd, workdir: str = None,
prev_proc: subprocess.Popen = None) -> subprocess.Popen:
# Note(mmagr): When this script is executed by collectd-sensubility started
# via collectd the script has non-root permission but inherits
# environment from collectd with root permission. We need
# to avoid sensubility access /root when using podman-remote.
# See https://bugzilla.redhat.com/show_bug.cgi?id=2091076 for
# more info.
proc_env = os.environ.copy()
proc_env["HOME"] = "/tmp"
if type(cmd[0]) is list: # multiple piped commands
last = prev_proc
for c in cmd:
last = execute(c, workdir, last)
return last
else: # single command
inpipe = prev_proc.stdout if prev_proc is not None else None
proc = subprocess.Popen(cmd, cwd=workdir, env=proc_env, stdin=inpipe,
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
if prev_proc is not None:
prev_proc.stdout.close()
prev_proc.stderr.close()
return proc
def fetch_container_health(containers):
out = []
for cont in set(containers.split('\n')) - set(SKIP_LIST):
if not cont:
continue
proc = execute([
[shutil.which('podman-remote'),
'--url', SOCKET, 'inspect', cont],
[shutil.which('jq'), '.[] | %s' % FORMAT]
])
o, e = proc.communicate()
if proc.returncode != 0:
msg = "Failed to fetch status of %s: %s" % (cont, e.decode())
return proc.returncode, msg
item = json.loads(o.decode())
if len(item['healthy']) > 0:
item['status'] = item['healthy']
else:
item['status'] = 'running' if item['status'] else 'stopped'
item['healthy'] = int(item['healthy'] == 'healthy')
out.append(item)
return 0, out
if __name__ == "__main__":
proc = execute([shutil.which('podman-remote'), '--url', SOCKET,
'ps', '--all', '--format', '{{.Names}}'])
o, e = proc.communicate()
if proc.returncode != 0:
print("Failed to list containers:\n%s\n%s" % (o.decode(), e.decode()))
sys.exit(1)
rc, status = fetch_container_health(o.decode())
if rc != 0:
print("Failed to inspect containers:\n%s" % status)
sys.exit(rc)
print(json.dumps(status))