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# -*- coding: utf-8 -*- # Copyright: (c) 2012, Michael DeHaan <michael.dehaan@gmail.com> # GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt) from __future__ import absolute_import, division, print_function __metaclass__ = type DOCUMENTATION = r''' --- module: service version_added: "0.1" short_description: Manage services description: - Controls services on remote hosts. Supported init systems include BSD init, OpenRC, SysV, Solaris SMF, systemd, upstart. - This module acts as a proxy to the underlying service manager module. While all arguments will be passed to the underlying module, not all modules support the same arguments. This documentation only covers the minimum intersection of module arguments that all service manager modules support. - This module is a proxy for multiple more specific service manager modules (such as M(ansible.builtin.systemd) and M(ansible.builtin.sysvinit)). This allows management of a heterogeneous environment of machines without creating a specific task for each service manager. The module to be executed is determined by the I(use) option, which defaults to the service manager discovered by M(ansible.builtin.setup). If C(setup) was not yet run, this module may run it. - For Windows targets, use the M(ansible.windows.win_service) module instead. options: name: description: - Name of the service. type: str required: true state: description: - C(started)/C(stopped) are idempotent actions that will not run commands unless necessary. - C(restarted) will always bounce the service. - C(reloaded) will always reload. - B(At least one of state and enabled are required.) - Note that reloaded will start the service if it is not already started, even if your chosen init system wouldn't normally. type: str choices: [ reloaded, restarted, started, stopped ] sleep: description: - If the service is being C(restarted) then sleep this many seconds between the stop and start command. - This helps to work around badly-behaving init scripts that exit immediately after signaling a process to stop. - Not all service managers support sleep, i.e when using systemd this setting will be ignored. type: int version_added: "1.3" pattern: description: - If the service does not respond to the status command, name a substring to look for as would be found in the output of the I(ps) command as a stand-in for a status result. - If the string is found, the service will be assumed to be started. - While using remote hosts with systemd this setting will be ignored. type: str version_added: "0.7" enabled: description: - Whether the service should start on boot. - B(At least one of state and enabled are required.) type: bool runlevel: description: - For OpenRC init scripts (e.g. Gentoo) only. - The runlevel that this service belongs to. - While using remote hosts with systemd this setting will be ignored. type: str default: default arguments: description: - Additional arguments provided on the command line. - While using remote hosts with systemd this setting will be ignored. type: str aliases: [ args ] use: description: - The service module actually uses system specific modules, normally through auto detection, this setting can force a specific module. - Normally it uses the value of the 'ansible_service_mgr' fact and falls back to the old 'service' module when none matching is found. type: str default: auto version_added: 2.2 extends_documentation_fragment: - action_common_attributes - action_common_attributes.flow attributes: action: support: full async: support: full bypass_host_loop: support: none check_mode: details: support depends on the underlying plugin invoked support: N/A diff_mode: details: support depends on the underlying plugin invoked support: N/A platform: details: The support depends on the availability for the specific plugin for each platform and if fact gathering is able to detect it platforms: all notes: - For AIX, group subsystem names can be used. seealso: - module: ansible.windows.win_service author: - Ansible Core Team - Michael DeHaan ''' EXAMPLES = r''' - name: Start service httpd, if not started ansible.builtin.service: name: httpd state: started - name: Stop service httpd, if started ansible.builtin.service: name: httpd state: stopped - name: Restart service httpd, in all cases ansible.builtin.service: name: httpd state: restarted - name: Reload service httpd, in all cases ansible.builtin.service: name: httpd state: reloaded - name: Enable service httpd, and not touch the state ansible.builtin.service: name: httpd enabled: yes - name: Start service foo, based on running process /usr/bin/foo ansible.builtin.service: name: foo pattern: /usr/bin/foo state: started - name: Restart network service for interface eth0 ansible.builtin.service: name: network state: restarted args: eth0 ''' RETURN = r'''#''' import glob import json import os import platform import re import select import shlex import subprocess import tempfile import time # The distutils module is not shipped with SUNWPython on Solaris. # It's in the SUNWPython-devel package which also contains development files # that don't belong on production boxes. Since our Solaris code doesn't # depend on LooseVersion, do not import it on Solaris. if platform.system() != 'SunOS': from ansible.module_utils.compat.version import LooseVersion from ansible.module_utils._text import to_bytes, to_text from ansible.module_utils.basic import AnsibleModule from ansible.module_utils.common.locale import get_best_parsable_locale from ansible.module_utils.common.sys_info import get_platform_subclass from ansible.module_utils.service import fail_if_missing from ansible.module_utils.six import PY2, b class Service(object): """ This is the generic Service manipulation class that is subclassed based on platform. A subclass should override the following action methods:- - get_service_tools - service_enable - get_service_status - service_control All subclasses MUST define platform and distribution (which may be None). """ platform = 'Generic' distribution = None def __new__(cls, *args, **kwargs): new_cls = get_platform_subclass(Service) return super(cls, new_cls).__new__(new_cls) def __init__(self, module): self.module = module self.name = module.params['name'] self.state = module.params['state'] self.sleep = module.params['sleep'] self.pattern = module.params['pattern'] self.enable = module.params['enabled'] self.runlevel = module.params['runlevel'] self.changed = False self.running = None self.crashed = None self.action = None self.svc_cmd = None self.svc_initscript = None self.svc_initctl = None self.enable_cmd = None self.arguments = module.params.get('arguments', '') self.rcconf_file = None self.rcconf_key = None self.rcconf_value = None self.svc_change = False # =========================================== # Platform specific methods (must be replaced by subclass). def get_service_tools(self): self.module.fail_json(msg="get_service_tools not implemented on target platform") def service_enable(self): self.module.fail_json(msg="service_enable not implemented on target platform") def get_service_status(self): self.module.fail_json(msg="get_service_status not implemented on target platform") def service_control(self): self.module.fail_json(msg="service_control not implemented on target platform") # =========================================== # Generic methods that should be used on all platforms. def execute_command(self, cmd, daemonize=False): locale = get_best_parsable_locale(self.module) lang_env = dict(LANG=locale, LC_ALL=locale, LC_MESSAGES=locale) # Most things don't need to be daemonized if not daemonize: # chkconfig localizes messages and we're screen scraping so make # sure we use the C locale return self.module.run_command(cmd, environ_update=lang_env) # This is complex because daemonization is hard for people. # What we do is daemonize a part of this module, the daemon runs the # command, picks up the return code and output, and returns it to the # main process. pipe = os.pipe() pid = os.fork() if pid == 0: os.close(pipe[0]) # Set stdin/stdout/stderr to /dev/null fd = os.open(os.devnull, os.O_RDWR) if fd != 0: os.dup2(fd, 0) if fd != 1: os.dup2(fd, 1) if fd != 2: os.dup2(fd, 2) if fd not in (0, 1, 2): os.close(fd) # Make us a daemon. Yes, that's all it takes. pid = os.fork() if pid > 0: os._exit(0) os.setsid() os.chdir("/") pid = os.fork() if pid > 0: os._exit(0) # Start the command if PY2: # Python 2.6's shlex.split can't handle text strings correctly cmd = to_bytes(cmd, errors='surrogate_or_strict') cmd = shlex.split(cmd) else: # Python3.x shex.split text strings. cmd = to_text(cmd, errors='surrogate_or_strict') cmd = [to_bytes(c, errors='surrogate_or_strict') for c in shlex.split(cmd)] # In either of the above cases, pass a list of byte strings to Popen # chkconfig localizes messages and we're screen scraping so make # sure we use the C locale p = subprocess.Popen(cmd, shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE, env=lang_env, preexec_fn=lambda: os.close(pipe[1])) stdout = b("") stderr = b("") fds = [p.stdout, p.stderr] # Wait for all output, or until the main process is dead and its output is done. while fds: rfd, wfd, efd = select.select(fds, [], fds, 1) if not (rfd + wfd + efd) and p.poll() is not None: break if p.stdout in rfd: dat = os.read(p.stdout.fileno(), 4096) if not dat: fds.remove(p.stdout) stdout += dat if p.stderr in rfd: dat = os.read(p.stderr.fileno(), 4096) if not dat: fds.remove(p.stderr) stderr += dat p.wait() # Return a JSON blob to parent blob = json.dumps([p.returncode, to_text(stdout), to_text(stderr)]) os.write(pipe[1], to_bytes(blob, errors='surrogate_or_strict')) os.close(pipe[1]) os._exit(0) elif pid == -1: self.module.fail_json(msg="unable to fork") else: os.close(pipe[1]) os.waitpid(pid, 0) # Wait for data from daemon process and process it. data = b("") while True: rfd, wfd, efd = select.select([pipe[0]], [], [pipe[0]]) if pipe[0] in rfd: dat = os.read(pipe[0], 4096) if not dat: break data += dat return json.loads(to_text(data, errors='surrogate_or_strict')) def check_ps(self): # Set ps flags if platform.system() == 'SunOS': psflags = '-ef' else: psflags = 'auxww' # Find ps binary psbin = self.module.get_bin_path('ps', True) (rc, psout, pserr) = self.execute_command('%s %s' % (psbin, psflags)) # If rc is 0, set running as appropriate if rc == 0: self.running = False lines = psout.split("\n") for line in lines: if self.pattern in line and "pattern=" not in line: # so as to not confuse ./hacking/test-module.py self.running = True break def check_service_changed(self): if self.state and self.running is None: self.module.fail_json(msg="failed determining service state, possible typo of service name?") # Find out if state has changed if not self.running and self.state in ["reloaded", "started"]: self.svc_change = True elif self.running and self.state in ["reloaded", "stopped"]: self.svc_change = True elif self.state == "restarted": self.svc_change = True if self.module.check_mode and self.svc_change: self.module.exit_json(changed=True, msg='service state changed') def modify_service_state(self): # Only do something if state will change if self.svc_change: # Control service if self.state in ['started']: self.action = "start" elif not self.running and self.state == 'reloaded': self.action = "start" elif self.state == 'stopped': self.action = "stop" elif self.state == 'reloaded': self.action = "reload" elif self.state == 'restarted': self.action = "restart" if self.module.check_mode: self.module.exit_json(changed=True, msg='changing service state') return self.service_control() else: # If nothing needs to change just say all is well rc = 0 err = '' out = '' return rc, out, err def service_enable_rcconf(self): if self.rcconf_file is None or self.rcconf_key is None or self.rcconf_value is None: self.module.fail_json(msg="service_enable_rcconf() requires rcconf_file, rcconf_key and rcconf_value") self.changed = None entry = '%s="%s"\n' % (self.rcconf_key, self.rcconf_value) with open(self.rcconf_file, "r") as RCFILE: new_rc_conf = [] # Build a list containing the possibly modified file. for rcline in RCFILE: # Parse line removing whitespaces, quotes, etc. rcarray = shlex.split(rcline, comments=True) if len(rcarray) >= 1 and '=' in rcarray[0]: (key, value) = rcarray[0].split("=", 1) if key == self.rcconf_key: if value.upper() == self.rcconf_value: # Since the proper entry already exists we can stop iterating. self.changed = False break else: # We found the key but the value is wrong, replace with new entry. rcline = entry self.changed = True # Add line to the list. new_rc_conf.append(rcline.strip() + '\n') # If we did not see any trace of our entry we need to add it. if self.changed is None: new_rc_conf.append(entry) self.changed = True if self.changed is True: if self.module.check_mode: self.module.exit_json(changed=True, msg="changing service enablement") # Create a temporary file next to the current rc.conf (so we stay on the same filesystem). # This way the replacement operation is atomic. rcconf_dir = os.path.dirname(self.rcconf_file) rcconf_base = os.path.basename(self.rcconf_file) (TMP_RCCONF, tmp_rcconf_file) = tempfile.mkstemp(dir=rcconf_dir, prefix="%s-" % rcconf_base) # Write out the contents of the list into our temporary file. for rcline in new_rc_conf: os.write(TMP_RCCONF, rcline.encode()) # Close temporary file. os.close(TMP_RCCONF) # Replace previous rc.conf. self.module.atomic_move(tmp_rcconf_file, self.rcconf_file) class LinuxService(Service): """ This is the Linux Service manipulation class - it is currently supporting a mixture of binaries and init scripts for controlling services started at boot, as well as for controlling the current state. """ platform = 'Linux' distribution = None def get_service_tools(self): paths = ['/sbin', '/usr/sbin', '/bin', '/usr/bin'] binaries = ['service', 'chkconfig', 'update-rc.d', 'rc-service', 'rc-update', 'initctl', 'systemctl', 'start', 'stop', 'restart', 'insserv'] initpaths = ['/etc/init.d'] location = dict() for binary in binaries: location[binary] = self.module.get_bin_path(binary, opt_dirs=paths) for initdir in initpaths: initscript = "%s/%s" % (initdir, self.name) if os.path.isfile(initscript): self.svc_initscript = initscript def check_systemd(): # tools must be installed if location.get('systemctl', False): # this should show if systemd is the boot init system # these mirror systemd's own sd_boot test http://www.freedesktop.org/software/systemd/man/sd_booted.html for canary in ["/run/systemd/system/", "/dev/.run/systemd/", "/dev/.systemd/"]: if os.path.exists(canary): return True # If all else fails, check if init is the systemd command, using comm as cmdline could be symlink try: f = open('/proc/1/comm', 'r') except IOError: # If comm doesn't exist, old kernel, no systemd return False for line in f: if 'systemd' in line: return True return False # Locate a tool to enable/disable a service if check_systemd(): # service is managed by systemd self.__systemd_unit = self.name self.svc_cmd = location['systemctl'] self.enable_cmd = location['systemctl'] elif location.get('initctl', False) and os.path.exists("/etc/init/%s.conf" % self.name): # service is managed by upstart self.enable_cmd = location['initctl'] # set the upstart version based on the output of 'initctl version' self.upstart_version = LooseVersion('0.0.0') try: version_re = re.compile(r'\(upstart (.*)\)') rc, stdout, stderr = self.module.run_command('%s version' % location['initctl']) if rc == 0: res = version_re.search(stdout) if res: self.upstart_version = LooseVersion(res.groups()[0]) except Exception: pass # we'll use the default of 0.0.0 self.svc_cmd = location['initctl'] elif location.get('rc-service', False): # service is managed by OpenRC self.svc_cmd = location['rc-service'] self.enable_cmd = location['rc-update'] return # already have service start/stop tool too! elif self.svc_initscript: # service is managed by with SysV init scripts if location.get('update-rc.d', False): # and uses update-rc.d self.enable_cmd = location['update-rc.d'] elif location.get('insserv', None): # and uses insserv self.enable_cmd = location['insserv'] elif location.get('chkconfig', False): # and uses chkconfig self.enable_cmd = location['chkconfig'] if self.enable_cmd is None: fail_if_missing(self.module, False, self.name, msg='host') # If no service control tool selected yet, try to see if 'service' is available if self.svc_cmd is None and location.get('service', False): self.svc_cmd = location['service'] # couldn't find anything yet if self.svc_cmd is None and not self.svc_initscript: self.module.fail_json(msg='cannot find \'service\' binary or init script for service, possible typo in service name?, aborting') if location.get('initctl', False): self.svc_initctl = location['initctl'] def get_systemd_service_enabled(self): def sysv_exists(name): script = '/etc/init.d/' + name return os.access(script, os.X_OK) def sysv_is_enabled(name): return bool(glob.glob('/etc/rc?.d/S??' + name)) service_name = self.__systemd_unit (rc, out, err) = self.execute_command("%s is-enabled %s" % (self.enable_cmd, service_name,)) if rc == 0: return True elif out.startswith('disabled'): return False elif sysv_exists(service_name): return sysv_is_enabled(service_name) else: return False def get_systemd_status_dict(self): # Check status first as show will not fail if service does not exist (rc, out, err) = self.execute_command("%s show '%s'" % (self.enable_cmd, self.__systemd_unit,)) if rc != 0: self.module.fail_json(msg='failure %d running systemctl show for %r: %s' % (rc, self.__systemd_unit, err)) elif 'LoadState=not-found' in out: self.module.fail_json(msg='systemd could not find the requested service "%r": %s' % (self.__systemd_unit, err)) key = None value_buffer = [] status_dict = {} for line in out.splitlines(): if '=' in line: if not key: key, value = line.split('=', 1) # systemd fields that are shell commands can be multi-line # We take a value that begins with a "{" as the start of # a shell command and a line that ends with "}" as the end of # the command if value.lstrip().startswith('{'): if value.rstrip().endswith('}'): status_dict[key] = value key = None else: value_buffer.append(value) else: status_dict[key] = value key = None else: if line.rstrip().endswith('}'): status_dict[key] = '\n'.join(value_buffer) key = None else: value_buffer.append(value) else: value_buffer.append(value) return status_dict def get_systemd_service_status(self): d = self.get_systemd_status_dict() if d.get('ActiveState') == 'active': # run-once services (for which a single successful exit indicates # that they are running as designed) should not be restarted here. # Thus, we are not checking d['SubState']. self.running = True self.crashed = False elif d.get('ActiveState') == 'failed': self.running = False self.crashed = True elif d.get('ActiveState') is None: self.module.fail_json(msg='No ActiveState value in systemctl show output for %r' % (self.__systemd_unit,)) else: self.running = False self.crashed = False return self.running def get_service_status(self): if self.svc_cmd and self.svc_cmd.endswith('systemctl'): return self.get_systemd_service_status() self.action = "status" rc, status_stdout, status_stderr = self.service_control() # if we have decided the service is managed by upstart, we check for some additional output... if self.svc_initctl and self.running is None: # check the job status by upstart response initctl_rc, initctl_status_stdout, initctl_status_stderr = self.execute_command("%s status %s %s" % (self.svc_initctl, self.name, self.arguments)) if "stop/waiting" in initctl_status_stdout: self.running = False elif "start/running" in initctl_status_stdout: self.running = True if self.svc_cmd and self.svc_cmd.endswith("rc-service") and self.running is None: openrc_rc, openrc_status_stdout, openrc_status_stderr = self.execute_command("%s %s status" % (self.svc_cmd, self.name)) self.running = "started" in openrc_status_stdout self.crashed = "crashed" in openrc_status_stderr # Prefer a non-zero return code. For reference, see: # http://refspecs.linuxbase.org/LSB_4.1.0/LSB-Core-generic/LSB-Core-generic/iniscrptact.html if self.running is None and rc in [1, 2, 3, 4, 69]: self.running = False # if the job status is still not known check it by status output keywords # Only check keywords if there's only one line of output (some init # scripts will output verbosely in case of error and those can emit # keywords that are picked up as false positives if self.running is None and status_stdout.count('\n') <= 1: # first transform the status output that could irritate keyword matching cleanout = status_stdout.lower().replace(self.name.lower(), '') if "stop" in cleanout: self.running = False elif "run" in cleanout: self.running = not ("not " in cleanout) elif "start" in cleanout and "not " not in cleanout: self.running = True elif 'could not access pid file' in cleanout: self.running = False elif 'is dead and pid file exists' in cleanout: self.running = False elif 'dead but subsys locked' in cleanout: self.running = False elif 'dead but pid file exists' in cleanout: self.running = False # if the job status is still not known and we got a zero for the # return code, assume here that the service is running if self.running is None and rc == 0: self.running = True # if the job status is still not known check it by special conditions if self.running is None: if self.name == 'iptables' and "ACCEPT" in status_stdout: # iptables status command output is lame # TODO: lookup if we can use a return code for this instead? self.running = True return self.running def service_enable(self): if self.enable_cmd is None: self.module.fail_json(msg='cannot detect command to enable service %s, typo or init system potentially unknown' % self.name) self.changed = True action = None # # Upstart's initctl # if self.enable_cmd.endswith("initctl"): def write_to_override_file(file_name, file_contents, ): override_file = open(file_name, 'w') override_file.write(file_contents) override_file.close() initpath = '/etc/init' if self.upstart_version >= LooseVersion('0.6.7'): manreg = re.compile(r'^manual\s*$', re.M | re.I) config_line = 'manual\n' else: manreg = re.compile(r'^start on manual\s*$', re.M | re.I) config_line = 'start on manual\n' conf_file_name = "%s/%s.conf" % (initpath, self.name) override_file_name = "%s/%s.override" % (initpath, self.name) # Check to see if files contain the manual line in .conf and fail if True with open(conf_file_name) as conf_file_fh: conf_file_content = conf_file_fh.read() if manreg.search(conf_file_content): self.module.fail_json(msg="manual stanza not supported in a .conf file") self.changed = False if os.path.exists(override_file_name): with open(override_file_name) as override_fh: override_file_contents = override_fh.read() # Remove manual stanza if present and service enabled if self.enable and manreg.search(override_file_contents): self.changed = True override_state = manreg.sub('', override_file_contents) # Add manual stanza if not present and service disabled elif not (self.enable) and not (manreg.search(override_file_contents)): self.changed = True override_state = '\n'.join((override_file_contents, config_line)) # service already in desired state else: pass # Add file with manual stanza if service disabled elif not (self.enable): self.changed = True override_state = config_line else: # service already in desired state pass if self.module.check_mode: self.module.exit_json(changed=self.changed) # The initctl method of enabling and disabling services is much # different than for the other service methods. So actually # committing the change is done in this conditional and then we # skip the boilerplate at the bottom of the method if self.changed: try: write_to_override_file(override_file_name, override_state) except Exception: self.module.fail_json(msg='Could not modify override file') return # # SysV's chkconfig # if self.enable_cmd.endswith("chkconfig"): if self.enable: action = 'on' else: action = 'off' (rc, out, err) = self.execute_command("%s --list %s" % (self.enable_cmd, self.name)) if 'chkconfig --add %s' % self.name in err: self.execute_command("%s --add %s" % (self.enable_cmd, self.name)) (rc, out, err) = self.execute_command("%s --list %s" % (self.enable_cmd, self.name)) if self.name not in out: self.module.fail_json(msg="service %s does not support chkconfig" % self.name) # TODO: look back on why this is here # state = out.split()[-1] # Check if we're already in the correct state if "3:%s" % action in out and "5:%s" % action in out: self.changed = False return # # Systemd's systemctl # if self.enable_cmd.endswith("systemctl"): if self.enable: action = 'enable' else: action = 'disable' # Check if we're already in the correct state service_enabled = self.get_systemd_service_enabled() # self.changed should already be true if self.enable == service_enabled: self.changed = False return # # OpenRC's rc-update # if self.enable_cmd.endswith("rc-update"): if self.enable: action = 'add' else: action = 'delete' (rc, out, err) = self.execute_command("%s show" % self.enable_cmd) for line in out.splitlines(): service_name, runlevels = line.split('|') service_name = service_name.strip() if service_name != self.name: continue runlevels = re.split(r'\s+', runlevels) # service already enabled for the runlevel if self.enable and self.runlevel in runlevels: self.changed = False # service already disabled for the runlevel elif not self.enable and self.runlevel not in runlevels: self.changed = False break else: # service already disabled altogether if not self.enable: self.changed = False if not self.changed: return # # update-rc.d style # if self.enable_cmd.endswith("update-rc.d"): enabled = False slinks = glob.glob('/etc/rc?.d/S??' + self.name) if slinks: enabled = True if self.enable != enabled: self.changed = True if self.enable: action = 'enable' klinks = glob.glob('/etc/rc?.d/K??' + self.name) if not klinks: if not self.module.check_mode: (rc, out, err) = self.execute_command("%s %s defaults" % (self.enable_cmd, self.name)) if rc != 0: if err: self.module.fail_json(msg=err) else: self.module.fail_json(msg=out) % (self.enable_cmd, self.name, action) else: action = 'disable' if not self.module.check_mode: (rc, out, err) = self.execute_command("%s %s %s" % (self.enable_cmd, self.name, action)) if rc != 0: if err: self.module.fail_json(msg=err) else: self.module.fail_json(msg=out) % (self.enable_cmd, self.name, action) else: self.changed = False return # # insserv (Debian <=7, SLES, others) # if self.enable_cmd.endswith("insserv"): if self.enable: (rc, out, err) = self.execute_command("%s -n -v %s" % (self.enable_cmd, self.name)) else: (rc, out, err) = self.execute_command("%s -n -r -v %s" % (self.enable_cmd, self.name)) self.changed = False for line in err.splitlines(): if self.enable and line.find('enable service') != -1: self.changed = True break if not self.enable and line.find('remove service') != -1: self.changed = True break if self.module.check_mode: self.module.exit_json(changed=self.changed) if not self.changed: return if self.enable: (rc, out, err) = self.execute_command("%s %s" % (self.enable_cmd, self.name)) if (rc != 0) or (err != ''): self.module.fail_json(msg=("Failed to install service. rc: %s, out: %s, err: %s" % (rc, out, err))) return (rc, out, err) else: (rc, out, err) = self.execute_command("%s -r %s" % (self.enable_cmd, self.name)) if (rc != 0) or (err != ''): self.module.fail_json(msg=("Failed to remove service. rc: %s, out: %s, err: %s" % (rc, out, err))) return (rc, out, err) # # If we've gotten to the end, the service needs to be updated # self.changed = True # we change argument order depending on real binary used: # rc-update and systemctl need the argument order reversed if self.enable_cmd.endswith("rc-update"): args = (self.enable_cmd, action, self.name + " " + self.runlevel) elif self.enable_cmd.endswith("systemctl"): args = (self.enable_cmd, action, self.__systemd_unit) else: args = (self.enable_cmd, self.name, action) if self.module.check_mode: self.module.exit_json(changed=self.changed) (rc, out, err) = self.execute_command("%s %s %s" % args) if rc != 0: if err: self.module.fail_json(msg="Error when trying to %s %s: rc=%s %s" % (action, self.name, rc, err)) else: self.module.fail_json(msg="Failure for %s %s: rc=%s %s" % (action, self.name, rc, out)) return (rc, out, err) def service_control(self): # Decide what command to run svc_cmd = '' arguments = self.arguments if self.svc_cmd: if not self.svc_cmd.endswith("systemctl"): if self.svc_cmd.endswith("initctl"): # initctl commands take the form <cmd> <action> <name> svc_cmd = self.svc_cmd arguments = "%s %s" % (self.name, arguments) else: # SysV and OpenRC take the form <cmd> <name> <action> svc_cmd = "%s %s" % (self.svc_cmd, self.name) else: # systemd commands take the form <cmd> <action> <name> svc_cmd = self.svc_cmd arguments = "%s %s" % (self.__systemd_unit, arguments) elif self.svc_cmd is None and self.svc_initscript: # upstart svc_cmd = "%s" % self.svc_initscript # In OpenRC, if a service crashed, we need to reset its status to # stopped with the zap command, before we can start it back. if self.svc_cmd and self.svc_cmd.endswith('rc-service') and self.action == 'start' and self.crashed: self.execute_command("%s zap" % svc_cmd, daemonize=True) if self.action != "restart": if svc_cmd != '': # upstart or systemd or OpenRC rc_state, stdout, stderr = self.execute_command("%s %s %s" % (svc_cmd, self.action, arguments), daemonize=True) else: # SysV rc_state, stdout, stderr = self.execute_command("%s %s %s" % (self.action, self.name, arguments), daemonize=True) elif self.svc_cmd and self.svc_cmd.endswith('rc-service'): # All services in OpenRC support restart. rc_state, stdout, stderr = self.execute_command("%s %s %s" % (svc_cmd, self.action, arguments), daemonize=True) else: # In other systems, not all services support restart. Do it the hard way. if svc_cmd != '': # upstart or systemd rc1, stdout1, stderr1 = self.execute_command("%s %s %s" % (svc_cmd, 'stop', arguments), daemonize=True) else: # SysV rc1, stdout1, stderr1 = self.execute_command("%s %s %s" % ('stop', self.name, arguments), daemonize=True) if self.sleep: time.sleep(self.sleep) if svc_cmd != '': # upstart or systemd rc2, stdout2, stderr2 = self.execute_command("%s %s %s" % (svc_cmd, 'start', arguments), daemonize=True) else: # SysV rc2, stdout2, stderr2 = self.execute_command("%s %s %s" % ('start', self.name, arguments), daemonize=True) # merge return information if rc1 != 0 and rc2 == 0: rc_state = rc2 stdout = stdout2 stderr = stderr2 else: rc_state = rc1 + rc2 stdout = stdout1 + stdout2 stderr = stderr1 + stderr2 return (rc_state, stdout, stderr) class FreeBsdService(Service): """ This is the FreeBSD Service manipulation class - it uses the /etc/rc.conf file for controlling services started at boot and the 'service' binary to check status and perform direct service manipulation. """ platform = 'FreeBSD' distribution = None def get_service_tools(self): self.svc_cmd = self.module.get_bin_path('service', True) if not self.svc_cmd: self.module.fail_json(msg='unable to find service binary') self.sysrc_cmd = self.module.get_bin_path('sysrc') def get_service_status(self): rc, stdout, stderr = self.execute_command("%s %s %s %s" % (self.svc_cmd, self.name, 'onestatus', self.arguments)) if self.name == "pf": self.running = "Enabled" in stdout else: if rc == 1: self.running = False elif rc == 0: self.running = True def service_enable(self): if self.enable: self.rcconf_value = "YES" else: self.rcconf_value = "NO" rcfiles = ['/etc/rc.conf', '/etc/rc.conf.local', '/usr/local/etc/rc.conf'] for rcfile in rcfiles: if os.path.isfile(rcfile): self.rcconf_file = rcfile rc, stdout, stderr = self.execute_command("%s %s %s %s" % (self.svc_cmd, self.name, 'rcvar', self.arguments)) try: rcvars = shlex.split(stdout, comments=True) except Exception: # TODO: add a warning to the output with the failure pass if not rcvars: self.module.fail_json(msg="unable to determine rcvar", stdout=stdout, stderr=stderr) # In rare cases, i.e. sendmail, rcvar can return several key=value pairs # Usually there is just one, however. In other rare cases, i.e. uwsgi, # rcvar can return extra uncommented data that is not at all related to # the rcvar. We will just take the first key=value pair we come across # and hope for the best. for rcvar in rcvars: if '=' in rcvar: self.rcconf_key, default_rcconf_value = rcvar.split('=', 1) break if self.rcconf_key is None: self.module.fail_json(msg="unable to determine rcvar", stdout=stdout, stderr=stderr) if self.sysrc_cmd: # FreeBSD >= 9.2 rc, current_rcconf_value, stderr = self.execute_command("%s -n %s" % (self.sysrc_cmd, self.rcconf_key)) # it can happen that rcvar is not set (case of a system coming from the ports collection) # so we will fallback on the default if rc != 0: current_rcconf_value = default_rcconf_value if current_rcconf_value.strip().upper() != self.rcconf_value: self.changed = True if self.module.check_mode: self.module.exit_json(changed=True, msg="changing service enablement") rc, change_stdout, change_stderr = self.execute_command("%s %s=\"%s\"" % (self.sysrc_cmd, self.rcconf_key, self.rcconf_value)) if rc != 0: self.module.fail_json(msg="unable to set rcvar using sysrc", stdout=change_stdout, stderr=change_stderr) # sysrc does not exit with code 1 on permission error => validate successful change using service(8) rc, check_stdout, check_stderr = self.execute_command("%s %s %s" % (self.svc_cmd, self.name, "enabled")) if self.enable != (rc == 0): # rc = 0 indicates enabled service, rc = 1 indicates disabled service self.module.fail_json(msg="unable to set rcvar: sysrc did not change value", stdout=change_stdout, stderr=change_stderr) else: self.changed = False else: # Legacy (FreeBSD < 9.2) try: return self.service_enable_rcconf() except Exception: self.module.fail_json(msg='unable to set rcvar') def service_control(self): if self.action == "start": self.action = "onestart" if self.action == "stop": self.action = "onestop" if self.action == "reload": self.action = "onereload" ret = self.execute_command("%s %s %s %s" % (self.svc_cmd, self.name, self.action, self.arguments)) if self.sleep: time.sleep(self.sleep) return ret class DragonFlyBsdService(FreeBsdService): """ This is the DragonFly BSD Service manipulation class - it uses the /etc/rc.conf file for controlling services started at boot and the 'service' binary to check status and perform direct service manipulation. """ platform = 'DragonFly' distribution = None def service_enable(self): if self.enable: self.rcconf_value = "YES" else: self.rcconf_value = "NO" rcfiles = ['/etc/rc.conf'] # Overkill? for rcfile in rcfiles: if os.path.isfile(rcfile): self.rcconf_file = rcfile self.rcconf_key = "%s" % self.name.replace("-", "_") return self.service_enable_rcconf() class OpenBsdService(Service): """ This is the OpenBSD Service manipulation class - it uses rcctl(8) or /etc/rc.d scripts for service control. Enabling a service is only supported if rcctl is present. """ platform = 'OpenBSD' distribution = None def get_service_tools(self): self.enable_cmd = self.module.get_bin_path('rcctl') if self.enable_cmd: self.svc_cmd = self.enable_cmd else: rcdir = '/etc/rc.d' rc_script = "%s/%s" % (rcdir, self.name) if os.path.isfile(rc_script): self.svc_cmd = rc_script if not self.svc_cmd: self.module.fail_json(msg='unable to find svc_cmd') def get_service_status(self): if self.enable_cmd: rc, stdout, stderr = self.execute_command("%s %s %s" % (self.svc_cmd, 'check', self.name)) else: rc, stdout, stderr = self.execute_command("%s %s" % (self.svc_cmd, 'check')) if stderr: self.module.fail_json(msg=stderr) if rc == 1: self.running = False elif rc == 0: self.running = True def service_control(self): if self.enable_cmd: return self.execute_command("%s -f %s %s" % (self.svc_cmd, self.action, self.name), daemonize=True) else: return self.execute_command("%s -f %s" % (self.svc_cmd, self.action)) def service_enable(self): if not self.enable_cmd: return super(OpenBsdService, self).service_enable() rc, stdout, stderr = self.execute_command("%s %s %s %s" % (self.enable_cmd, 'getdef', self.name, 'flags')) if stderr: self.module.fail_json(msg=stderr) getdef_string = stdout.rstrip() # Depending on the service the string returned from 'getdef' may be # either a set of flags or the boolean YES/NO if getdef_string == "YES" or getdef_string == "NO": default_flags = '' else: default_flags = getdef_string rc, stdout, stderr = self.execute_command("%s %s %s %s" % (self.enable_cmd, 'get', self.name, 'flags')) if stderr: self.module.fail_json(msg=stderr) get_string = stdout.rstrip() # Depending on the service the string returned from 'get' may be # either a set of flags or the boolean YES/NO if get_string == "YES" or get_string == "NO": current_flags = '' else: current_flags = get_string # If there are arguments from the user we use these as flags unless # they are already set. if self.arguments and self.arguments != current_flags: changed_flags = self.arguments # If the user has not supplied any arguments and the current flags # differ from the default we reset them. elif not self.arguments and current_flags != default_flags: changed_flags = ' ' # Otherwise there is no need to modify flags. else: changed_flags = '' rc, stdout, stderr = self.execute_command("%s %s %s %s" % (self.enable_cmd, 'get', self.name, 'status')) if self.enable: if rc == 0 and not changed_flags: return if rc != 0: status_action = "set %s status on" % (self.name) else: status_action = '' if changed_flags: flags_action = "set %s flags %s" % (self.name, changed_flags) else: flags_action = '' else: if rc == 1: return status_action = "set %s status off" % self.name flags_action = '' # Verify state assumption if not status_action and not flags_action: self.module.fail_json(msg="neither status_action or status_flags is set, this should never happen") if self.module.check_mode: self.module.exit_json(changed=True, msg="changing service enablement") status_modified = 0 if status_action: rc, stdout, stderr = self.execute_command("%s %s" % (self.enable_cmd, status_action)) if rc != 0: if stderr: self.module.fail_json(msg=stderr) else: self.module.fail_json(msg="rcctl failed to modify service status") status_modified = 1 if flags_action: rc, stdout, stderr = self.execute_command("%s %s" % (self.enable_cmd, flags_action)) if rc != 0: if stderr: if status_modified: error_message = "rcctl modified service status but failed to set flags: " + stderr else: error_message = stderr else: if status_modified: error_message = "rcctl modified service status but failed to set flags" else: error_message = "rcctl failed to modify service flags" self.module.fail_json(msg=error_message) self.changed = True class NetBsdService(Service): """ This is the NetBSD Service manipulation class - it uses the /etc/rc.conf file for controlling services started at boot, check status and perform direct service manipulation. Init scripts in /etc/rc.d are used for controlling services (start/stop) as well as for controlling the current state. """ platform = 'NetBSD' distribution = None def get_service_tools(self): initpaths = ['/etc/rc.d'] # better: $rc_directories - how to get in here? Run: sh -c '. /etc/rc.conf ; echo $rc_directories' for initdir in initpaths: initscript = "%s/%s" % (initdir, self.name) if os.path.isfile(initscript): self.svc_initscript = initscript if not self.svc_initscript: self.module.fail_json(msg='unable to find rc.d script') def service_enable(self): if self.enable: self.rcconf_value = "YES" else: self.rcconf_value = "NO" rcfiles = ['/etc/rc.conf'] # Overkill? for rcfile in rcfiles: if os.path.isfile(rcfile): self.rcconf_file = rcfile self.rcconf_key = "%s" % self.name.replace("-", "_") return self.service_enable_rcconf() def get_service_status(self): self.svc_cmd = "%s" % self.svc_initscript rc, stdout, stderr = self.execute_command("%s %s" % (self.svc_cmd, 'onestatus')) if rc == 1: self.running = False elif rc == 0: self.running = True def service_control(self): if self.action == "start": self.action = "onestart" if self.action == "stop": self.action = "onestop" self.svc_cmd = "%s" % self.svc_initscript return self.execute_command("%s %s" % (self.svc_cmd, self.action), daemonize=True) class SunOSService(Service): """ This is the SunOS Service manipulation class - it uses the svcadm command for controlling services, and svcs command for checking status. It also tries to be smart about taking the service out of maintenance state if necessary. """ platform = 'SunOS' distribution = None def get_service_tools(self): self.svcs_cmd = self.module.get_bin_path('svcs', True) if not self.svcs_cmd: self.module.fail_json(msg='unable to find svcs binary') self.svcadm_cmd = self.module.get_bin_path('svcadm', True) if not self.svcadm_cmd: self.module.fail_json(msg='unable to find svcadm binary') if self.svcadm_supports_sync(): self.svcadm_sync = '-s' else: self.svcadm_sync = '' def svcadm_supports_sync(self): # Support for synchronous restart/refresh is only supported on # Oracle Solaris >= 11.2 for line in open('/etc/release', 'r').readlines(): m = re.match(r'\s+Oracle Solaris (\d+)\.(\d+).*', line.rstrip()) if m and m.groups() >= ('11', '2'): return True def get_service_status(self): status = self.get_sunos_svcs_status() # Only 'online' is considered properly running. Everything else is off # or has some sort of problem. if status == 'online': self.running = True else: self.running = False def get_sunos_svcs_status(self): rc, stdout, stderr = self.execute_command("%s %s" % (self.svcs_cmd, self.name)) if rc == 1: if stderr: self.module.fail_json(msg=stderr) else: self.module.fail_json(msg=stdout) lines = stdout.rstrip("\n").split("\n") status = lines[-1].split(" ")[0] # status is one of: online, offline, degraded, disabled, maintenance, uninitialized # see man svcs(1) return status def service_enable(self): # Get current service enablement status rc, stdout, stderr = self.execute_command("%s -l %s" % (self.svcs_cmd, self.name)) if rc != 0: if stderr: self.module.fail_json(msg=stderr) else: self.module.fail_json(msg=stdout) enabled = False temporary = False # look for enabled line, which could be one of: # enabled true (temporary) # enabled false (temporary) # enabled true # enabled false for line in stdout.split("\n"): if line.startswith("enabled"): if "true" in line: enabled = True if "temporary" in line: temporary = True startup_enabled = (enabled and not temporary) or (not enabled and temporary) if self.enable and startup_enabled: return elif (not self.enable) and (not startup_enabled): return if not self.module.check_mode: # Mark service as started or stopped (this will have the side effect of # actually stopping or starting the service) if self.enable: subcmd = "enable -rs" else: subcmd = "disable -s" rc, stdout, stderr = self.execute_command("%s %s %s" % (self.svcadm_cmd, subcmd, self.name)) if rc != 0: if stderr: self.module.fail_json(msg=stderr) else: self.module.fail_json(msg=stdout) self.changed = True def service_control(self): status = self.get_sunos_svcs_status() # if starting or reloading, clear maintenance states if self.action in ['start', 'reload', 'restart'] and status in ['maintenance', 'degraded']: rc, stdout, stderr = self.execute_command("%s clear %s" % (self.svcadm_cmd, self.name)) if rc != 0: return rc, stdout, stderr status = self.get_sunos_svcs_status() if status in ['maintenance', 'degraded']: self.module.fail_json(msg="Failed to bring service out of %s status." % status) if self.action == 'start': subcmd = "enable -rst" elif self.action == 'stop': subcmd = "disable -st" elif self.action == 'reload': subcmd = "refresh %s" % (self.svcadm_sync) elif self.action == 'restart' and status == 'online': subcmd = "restart %s" % (self.svcadm_sync) elif self.action == 'restart' and status != 'online': subcmd = "enable -rst" return self.execute_command("%s %s %s" % (self.svcadm_cmd, subcmd, self.name)) class AIX(Service): """ This is the AIX Service (SRC) manipulation class - it uses lssrc, startsrc, stopsrc and refresh for service control. Enabling a service is currently not supported. Would require to add an entry in the /etc/inittab file (mkitab, chitab and rmitab commands) """ platform = 'AIX' distribution = None def get_service_tools(self): self.lssrc_cmd = self.module.get_bin_path('lssrc', True) if not self.lssrc_cmd: self.module.fail_json(msg='unable to find lssrc binary') self.startsrc_cmd = self.module.get_bin_path('startsrc', True) if not self.startsrc_cmd: self.module.fail_json(msg='unable to find startsrc binary') self.stopsrc_cmd = self.module.get_bin_path('stopsrc', True) if not self.stopsrc_cmd: self.module.fail_json(msg='unable to find stopsrc binary') self.refresh_cmd = self.module.get_bin_path('refresh', True) if not self.refresh_cmd: self.module.fail_json(msg='unable to find refresh binary') def get_service_status(self): status = self.get_aix_src_status() # Only 'active' is considered properly running. Everything else is off # or has some sort of problem. if status == 'active': self.running = True else: self.running = False def get_aix_src_status(self): # Check subsystem status rc, stdout, stderr = self.execute_command("%s -s %s" % (self.lssrc_cmd, self.name)) if rc == 1: # If check for subsystem is not ok, check if service name is a # group subsystem rc, stdout, stderr = self.execute_command("%s -g %s" % (self.lssrc_cmd, self.name)) if rc == 1: if stderr: self.module.fail_json(msg=stderr) else: self.module.fail_json(msg=stdout) else: # Check all subsystem status, if one subsystem is not active # the group is considered not active. lines = stdout.splitlines() for state in lines[1:]: if state.split()[-1].strip() != "active": status = state.split()[-1].strip() break else: status = "active" # status is one of: active, inoperative return status else: lines = stdout.rstrip("\n").split("\n") status = lines[-1].split(" ")[-1] # status is one of: active, inoperative return status def service_control(self): # Check if service name is a subsystem of a group subsystem rc, stdout, stderr = self.execute_command("%s -a" % (self.lssrc_cmd)) if rc == 1: if stderr: self.module.fail_json(msg=stderr) else: self.module.fail_json(msg=stdout) else: lines = stdout.splitlines() subsystems = [] groups = [] for line in lines[1:]: subsystem = line.split()[0].strip() group = line.split()[1].strip() subsystems.append(subsystem) if group: groups.append(group) # Define if service name parameter: # -s subsystem or -g group subsystem if self.name in subsystems: srccmd_parameter = "-s" elif self.name in groups: srccmd_parameter = "-g" if self.action == 'start': srccmd = self.startsrc_cmd elif self.action == 'stop': srccmd = self.stopsrc_cmd elif self.action == 'reload': srccmd = self.refresh_cmd elif self.action == 'restart': self.execute_command("%s %s %s" % (self.stopsrc_cmd, srccmd_parameter, self.name)) if self.sleep: time.sleep(self.sleep) srccmd = self.startsrc_cmd if self.arguments and self.action in ('start', 'restart'): return self.execute_command("%s -a \"%s\" %s %s" % (srccmd, self.arguments, srccmd_parameter, self.name)) else: return self.execute_command("%s %s %s" % (srccmd, srccmd_parameter, self.name)) # =========================================== # Main control flow def main(): module = AnsibleModule( argument_spec=dict( name=dict(type='str', required=True), state=dict(type='str', choices=['started', 'stopped', 'reloaded', 'restarted']), sleep=dict(type='int'), pattern=dict(type='str'), enabled=dict(type='bool'), runlevel=dict(type='str', default='default'), arguments=dict(type='str', default='', aliases=['args']), ), supports_check_mode=True, required_one_of=[['state', 'enabled']], ) service = Service(module) module.debug('Service instantiated - platform %s' % service.platform) if service.distribution: module.debug('Service instantiated - distribution %s' % service.distribution) rc = 0 out = '' err = '' result = {} result['name'] = service.name # Find service management tools service.get_service_tools() # Enable/disable service startup at boot if requested if service.module.params['enabled'] is not None: # FIXME: ideally this should detect if we need to toggle the enablement state, though # it's unlikely the changed handler would need to fire in this case so it's a minor thing. service.service_enable() result['enabled'] = service.enable if module.params['state'] is None: # Not changing the running state, so bail out now. result['changed'] = service.changed module.exit_json(**result) result['state'] = service.state # Collect service status if service.pattern: service.check_ps() else: service.get_service_status() # Calculate if request will change service state service.check_service_changed() # Modify service state if necessary (rc, out, err) = service.modify_service_state() if rc != 0: if err and "Job is already running" in err: # upstart got confused, one such possibility is MySQL on Ubuntu 12.04 # where status may report it has no start/stop links and we could # not get accurate status pass else: if err: module.fail_json(msg=err) else: module.fail_json(msg=out) result['changed'] = service.changed | service.svc_change if service.module.params['enabled'] is not None: result['enabled'] = service.module.params['enabled'] if not service.module.params['state']: status = service.get_service_status() if status is None: result['state'] = 'absent' elif status is False: result['state'] = 'started' else: result['state'] = 'stopped' else: # as we may have just bounced the service the service command may not # report accurate state at this moment so just show what we ran if service.module.params['state'] in ['reloaded', 'restarted', 'started']: result['state'] = 'started' else: result['state'] = 'stopped' module.exit_json(**result) if __name__ == '__main__': main()