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# Copyright 2014 Huawei Technologies Co. Ltd
#
# 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.
"""Miscellaneous Health Check for Compass."""
import logging
from compass.actions.health_check import base
from compass.actions.health_check import utils as health_check_utils
class MiscCheck(base.BaseCheck):
"""health check for misc."""
NAME = "Miscellaneous Check"
MISC_MAPPING = {
"yum": "rsyslog ntp iproute openssh-clients python git wget "
"python-setuptools "
"amqp mod_wsgi httpd squid "
"dhcp bind rsync yum-utils xinetd tftp-server gcc "
"net-snmp-utils net-snmp".split(" "),
"pip": "netaddr flask flask_script flask_restful amqplib "
"flask_sqlalchemy paramiko mock celery six discover daemon "
"unittest2 chef".split(" "),
"disable": "iptables ip6tables".split(" "),
"enable": "httpd squid xinetd dhcpd named sshd rsyslog cobblerd "
"ntpd compass-celeryd compass-progress-updated".split(" "),
}
def run(self):
"""do health check."""
self.check_linux_dependencies()
print "[Done]"
self.check_pip_dependencies()
print "[Done]"
self.check_ntp()
print "[Done]"
self.check_rsyslogd()
print "[Done]"
self.check_chkconfig()
print "[Done]"
self.check_selinux()
print "[Done]"
if self.code == 1:
self.messages.append(
"[%s]Info: Miscellaneous check has completed "
"No problems found, all systems go." % self.NAME)
return (self.code, self.messages)
def check_linux_dependencies(self):
"""Checks if dependencies are installed."""
print "Checking Linux dependencies....",
if self.dist in ("centos", "redhat", "fedora", "scientific linux"):
pkg_type = "yum"
else:
pkg_type = "apt"
try:
pkg_module = __import__(pkg_type)
except Exception:
self._set_status(
0,
"[%s]Error: No module named %s, "
"please install it first." % (self.NAME, pkg_type))
return True
logging.info('import %s: %s', pkg_type, pkg_module)
method_name = 'self.check_' + pkg_type + '_dependencies(pkg_module)'
eval(method_name)
def check_yum_dependencies(self, pkg_module):
"""Checks if yum dependencies are installed.
:param pkg_module : python yum library
:type pkg_module : python module
"""
print "Checking Yum dependencies......",
yum_base = pkg_module.YumBase()
uninstalled = []
for package in self.MISC_MAPPING["yum"]:
if len(yum_base.rpmdb.searchNevra(name=package)) == 0:
self._set_status(
0,
"[%s]Error: %s package is required"
% (self.NAME, package))
uninstalled.append(package)
if len(uninstalled) != 0:
self._set_status(
0,
"[%s]Info: Uninstalled yum packages: %s"
% (self.NAME, ', '.join(item for item in uninstalled)))
return True
def check_pip_dependencies(self):
"""Checks if required pip packages are installed."""
print "Checking pip dependencies......",
uninstalled = []
for module in self.MISC_MAPPING['pip']:
try:
__import__(module)
except Exception:
self._set_status(
0,
"[%s]Error: pip package %s is requred"
% (self.NAME, module))
uninstalled.append(module)
if len(uninstalled) != 0:
self._set_status(
0,
"[%s]Info: Uninstalled pip packages: %s"
% (self.NAME, ', '.join(item for item in uninstalled)))
return True
def check_ntp(self):
"""Validates ntp configuration and service."""
print "Checking NTP......",
conf_err_msg = health_check_utils.check_path(self.NAME,
'/etc/ntp.conf')
if not conf_err_msg == "":
self._set_status(0, conf_err_msg)
serv_err_msg = health_check_utils.check_service_running(self.NAME,
'ntpd')
if not serv_err_msg == "":
self._set_status(0, serv_err_msg)
return True
def check_rsyslogd(self):
"""Validates rsyslogd configuration and service."""
print "Checking rsyslog......",
conf_err_msg = health_check_utils.check_path(self.NAME,
'/etc/rsyslog.conf')
if not conf_err_msg == "":
self._set_status(0, conf_err_msg)
dir_err_msg = health_check_utils.check_path(self.NAME,
'/etc/rsyslog.d/')
if not dir_err_msg == "":
self._set_status(0, dir_err_msg)
serv_err_msg = health_check_utils.check_service_running(self.NAME,
'rsyslogd')
if not serv_err_msg == "":
self._set_status(0, serv_err_msg)
return True
def check_chkconfig(self):
"""Check if required services are enabled on the start up."""
print "Checking chkconfig......",
serv_to_disable = []
for serv in self.MISC_MAPPING["disable"]:
if health_check_utils.check_chkconfig(serv) is True:
self._set_status(
0,
"[%s]Error: %s is not disabled"
% (self.NAME, serv))
serv_to_disable.append(serv)
if len(serv_to_disable) != 0:
self._set_status(
0,
"[%s]Info: You need to disable these services "
"on system start-up: %s"
% (self.NAME,
", ".join(item for item in serv_to_disable)))
serv_to_enable = []
for serv in self.MISC_MAPPING["enable"]:
if health_check_utils.check_chkconfig(serv) is False:
self._set_status(
0, "[%s]Error: %s is disabled" % (self.NAME, serv))
serv_to_enable.append(serv)
if len(serv_to_enable) != 0:
self._set_status(0, "[%s]Info: You need to enable these "
"services on system start-up: %s"
% (self.NAME,
", ".join(item for item in serv_to_enable)))
return True
def check_selinux(self):
"""Check if SELinux is disabled."""
print "Checking Selinux......",
disabled = False
with open("/etc/selinux/config") as selinux:
for line in selinux:
if "SELINUX=disabled" in line:
disabled = True
break
if disabled is False:
self._set_status(
0,
"[%s]Selinux is not disabled, "
"please disable it in /etc/selinux/config." % self.NAME)
return True
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