mirror of
https://github.com/thegeeklab/ansible-later.git
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235 lines
9.1 KiB
Python
235 lines
9.1 KiB
Python
#!/usr/bin/python
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# (c) 2017, Ansible Project
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# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
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# originally copied from AWX's scan_services module to bring this functionality
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# into Core
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from __future__ import absolute_import, division, print_function
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__metaclass__ = type
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ANSIBLE_METADATA = {'metadata_version': '1.1',
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'status': ['preview'],
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'supported_by': 'community'}
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DOCUMENTATION = '''
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---
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module: service_facts
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short_description: Return service state information as fact data
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description:
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- Return service state information as fact data for various service management utilities
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version_added: "2.5"
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requirements: ["Any of the following supported init systems: systemd, sysv, upstart"]
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notes:
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- When accessing the C(ansible_facts.services) facts collected by this module,
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it is recommended to not use "dot notation" because services can have a C(-)
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character in their name which would result in invalid "dot notation", such as
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C(ansible_facts.services.zuul-gateway). It is instead recommended to
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using the string value of the service name as the key in order to obtain
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the fact data value like C(ansible_facts.services['zuul-gateway'])
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author:
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- Matthew Jones
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- Adam Miller (@maxamillion)
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'''
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EXAMPLES = '''
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- name: populate service facts
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service_facts:
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- debug:
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var: ansible_facts.services
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'''
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RETURN = '''
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ansible_facts:
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description: Facts to add to ansible_facts about the services on the system
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returned: always
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type: complex
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contains:
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services:
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description: States of the services with service name as key.
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returned: always
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type: complex
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contains:
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source:
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description: Init system of the service. One of C(systemd), C(sysv), C(upstart).
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returned: always
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type: string
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sample: sysv
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state:
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description: State of the service. Either C(running) or C(stopped).
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returned: always
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type: string
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sample: running
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name:
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description: Name of the service.
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returned: always
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type: string
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sample: arp-ethers.service
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'''
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import re
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from ansible.module_utils.basic import AnsibleModule
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class BaseService(object):
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def __init__(self, module):
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self.module = module
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self.incomplete_warning = False
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class ServiceScanService(BaseService):
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def gather_services(self):
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services = {}
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service_path = self.module.get_bin_path("service")
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if service_path is None:
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return None
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initctl_path = self.module.get_bin_path("initctl")
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chkconfig_path = self.module.get_bin_path("chkconfig")
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# sysvinit
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if service_path is not None and chkconfig_path is None:
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rc, stdout, stderr = self.module.run_command("%s --status-all 2>&1 | grep -E \"\\[ (\\+|\\-) \\]\"" % service_path, use_unsafe_shell=True)
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for line in stdout.split("\n"):
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line_data = line.split()
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if len(line_data) < 4:
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continue # Skipping because we expected more data
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service_name = " ".join(line_data[3:])
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if line_data[1] == "+":
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service_state = "running"
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else:
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service_state = "stopped"
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services[service_name] = {"name": service_name, "state": service_state, "source": "sysv"}
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# Upstart
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if initctl_path is not None and chkconfig_path is None:
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p = re.compile(r'^\s?(?P<name>.*)\s(?P<goal>\w+)\/(?P<state>\w+)(\,\sprocess\s(?P<pid>[0-9]+))?\s*$')
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rc, stdout, stderr = self.module.run_command("%s list" % initctl_path)
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real_stdout = stdout.replace("\r", "")
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for line in real_stdout.split("\n"):
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m = p.match(line)
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if not m:
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continue
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service_name = m.group('name')
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service_goal = m.group('goal')
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service_state = m.group('state')
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if m.group('pid'):
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pid = m.group('pid')
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else:
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pid = None # NOQA
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payload = {"name": service_name, "state": service_state, "goal": service_goal, "source": "upstart"}
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services[service_name] = payload
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# RH sysvinit
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elif chkconfig_path is not None:
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# print '%s --status-all | grep -E "is (running|stopped)"' % service_path
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p = re.compile(
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r'(?P<service>.*?)\s+[0-9]:(?P<rl0>on|off)\s+[0-9]:(?P<rl1>on|off)\s+[0-9]:(?P<rl2>on|off)\s+'
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r'[0-9]:(?P<rl3>on|off)\s+[0-9]:(?P<rl4>on|off)\s+[0-9]:(?P<rl5>on|off)\s+[0-9]:(?P<rl6>on|off)')
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rc, stdout, stderr = self.module.run_command('%s' % chkconfig_path, use_unsafe_shell=True)
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# Check for special cases where stdout does not fit pattern
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match_any = False
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for line in stdout.split('\n'):
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if p.match(line):
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match_any = True
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if not match_any:
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p_simple = re.compile(r'(?P<service>.*?)\s+(?P<rl0>on|off)')
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match_any = False
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for line in stdout.split('\n'):
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if p_simple.match(line):
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match_any = True
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if match_any:
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# Try extra flags " -l --allservices" needed for SLES11
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rc, stdout, stderr = self.module.run_command('%s -l --allservices' % chkconfig_path, use_unsafe_shell=True)
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elif '--list' in stderr:
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# Extra flag needed for RHEL5
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rc, stdout, stderr = self.module.run_command('%s --list' % chkconfig_path, use_unsafe_shell=True)
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for line in stdout.split('\n'):
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m = p.match(line)
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if m:
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service_name = m.group('service')
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service_state = 'stopped'
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if m.group('rl3') == 'on':
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rc, stdout, stderr = self.module.run_command('%s %s status' % (service_path, service_name), use_unsafe_shell=True)
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service_state = rc
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if rc in (0,):
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service_state = 'running'
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# elif rc in (1,3):
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else:
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if 'root' in stderr or 'permission' in stderr.lower() or 'not in sudoers' in stderr.lower():
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self.incomplete_warning = True
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continue
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else:
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service_state = 'stopped'
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service_data = {"name": service_name, "state": service_state, "source": "sysv"}
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services[service_name] = service_data
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return services
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class SystemctlScanService(BaseService):
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def systemd_enabled(self):
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# Check if init is the systemd command, using comm as cmdline could be symlink
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try:
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f = open('/proc/1/comm', 'r')
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except IOError:
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# If comm doesn't exist, old kernel, no systemd
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return False
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for line in f:
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if 'systemd' in line:
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return True
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return False
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def gather_services(self):
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services = {}
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if not self.systemd_enabled():
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return None
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systemctl_path = self.module.get_bin_path("systemctl", opt_dirs=["/usr/bin", "/usr/local/bin"])
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if systemctl_path is None:
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return None
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rc, stdout, stderr = self.module.run_command("%s list-units --no-pager --type service --all" % systemctl_path, use_unsafe_shell=True)
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for line in [svc_line for svc_line in stdout.split('\n') if '.service' in svc_line and 'not-found' not in svc_line]:
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service_name = line.split()[0]
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if "running" in line:
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state_val = "running"
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else:
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if 'failed' in line:
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service_name = line.split()[1]
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state_val = "stopped"
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services[service_name] = {"name": service_name, "state": state_val, "source": "systemd"}
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return services
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def main():
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module = AnsibleModule(argument_spec=dict(), supports_check_mode=True)
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module.run_command_environ_update = dict(LANG="C", LC_ALL="C")
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service_modules = (ServiceScanService, SystemctlScanService)
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all_services = {}
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incomplete_warning = False
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for svc_module in service_modules:
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svcmod = svc_module(module)
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svc = svcmod.gather_services()
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if svc is not None:
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all_services.update(svc)
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if svcmod.incomplete_warning:
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incomplete_warning = True
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if len(all_services) == 0:
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results = dict(skipped=True, msg="Failed to find any services. Sometimes this is due to insufficient privileges.")
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else:
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results = dict(ansible_facts=dict(services=all_services))
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if incomplete_warning:
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results['msg'] = "WARNING: Could not find status for all services. Sometimes this is due to insufficient privileges."
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module.exit_json(**results)
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if __name__ == '__main__':
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main()
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