[bradm] Really fix text conflicts
This commit is contained in:
commit
20c8ccda19
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@ -8,3 +8,4 @@ include:
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- payload.execd
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- contrib.network.ip
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- contrib.database
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- contrib.charmsupport
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|
|
17
config.yaml
17
config.yaml
|
@ -77,4 +77,19 @@ options:
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type: boolean
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default: False
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description: Adds two config options (wsrep_drupal_282555_workaround and wsrep_retry_autocommit) as a workaround for Percona Primary Key bug (see lplp1366997).
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nagios_context:
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default: "juju"
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type: string
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description: |
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Used by the nrpe-external-master subordinate charm.
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A string that will be prepended to instance name to set the host name
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in nagios. So for instance the hostname would be something like:
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juju-myservice-0
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If you're running multiple environments with the same services in them
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this allows you to differentiate between them.
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nagios_servicegroups:
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default: ""
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type: string
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description: |
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A comma-separated list of nagios servicegroups.
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If left empty, the nagios_context will be used as the servicegroup
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|
|
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@ -0,0 +1,15 @@
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# Copyright 2014-2015 Canonical Limited.
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#
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# This file is part of charm-helpers.
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#
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# charm-helpers is free software: you can redistribute it and/or modify
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||||
# it under the terms of the GNU Lesser General Public License version 3 as
|
||||
# published by the Free Software Foundation.
|
||||
#
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||||
# charm-helpers is distributed in the hope that it will be useful,
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||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
# GNU Lesser General Public License for more details.
|
||||
#
|
||||
# You should have received a copy of the GNU Lesser General Public License
|
||||
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
|
|
@ -0,0 +1,358 @@
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# Copyright 2014-2015 Canonical Limited.
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#
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# This file is part of charm-helpers.
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#
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# charm-helpers is free software: you can redistribute it and/or modify
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||||
# it under the terms of the GNU Lesser General Public License version 3 as
|
||||
# published by the Free Software Foundation.
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#
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# charm-helpers is distributed in the hope that it will be useful,
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||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
# GNU Lesser General Public License for more details.
|
||||
#
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||||
# You should have received a copy of the GNU Lesser General Public License
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||||
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
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"""Compatibility with the nrpe-external-master charm"""
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# Copyright 2012 Canonical Ltd.
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#
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# Authors:
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# Matthew Wedgwood <matthew.wedgwood@canonical.com>
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import subprocess
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import pwd
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import grp
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import os
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import glob
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import shutil
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import re
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import shlex
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import yaml
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from charmhelpers.core.hookenv import (
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config,
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local_unit,
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log,
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relation_ids,
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relation_set,
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relations_of_type,
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)
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from charmhelpers.core.host import service
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# This module adds compatibility with the nrpe-external-master and plain nrpe
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# subordinate charms. To use it in your charm:
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#
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# 1. Update metadata.yaml
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#
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# provides:
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# (...)
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# nrpe-external-master:
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# interface: nrpe-external-master
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# scope: container
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#
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# and/or
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#
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# provides:
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# (...)
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# local-monitors:
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# interface: local-monitors
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# scope: container
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#
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# 2. Add the following to config.yaml
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#
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# nagios_context:
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# default: "juju"
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# type: string
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# description: |
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# Used by the nrpe subordinate charms.
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# A string that will be prepended to instance name to set the host name
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# in nagios. So for instance the hostname would be something like:
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# juju-myservice-0
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# If you're running multiple environments with the same services in them
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# this allows you to differentiate between them.
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# nagios_servicegroups:
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# default: ""
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# type: string
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# description: |
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# A comma-separated list of nagios servicegroups.
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# If left empty, the nagios_context will be used as the servicegroup
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#
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# 3. Add custom checks (Nagios plugins) to files/nrpe-external-master
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#
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# 4. Update your hooks.py with something like this:
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#
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# from charmsupport.nrpe import NRPE
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# (...)
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# def update_nrpe_config():
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# nrpe_compat = NRPE()
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# nrpe_compat.add_check(
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# shortname = "myservice",
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# description = "Check MyService",
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# check_cmd = "check_http -w 2 -c 10 http://localhost"
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# )
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# nrpe_compat.add_check(
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# "myservice_other",
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# "Check for widget failures",
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# check_cmd = "/srv/myapp/scripts/widget_check"
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# )
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# nrpe_compat.write()
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#
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# def config_changed():
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# (...)
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# update_nrpe_config()
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#
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# def nrpe_external_master_relation_changed():
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# update_nrpe_config()
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#
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# def local_monitors_relation_changed():
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# update_nrpe_config()
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#
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# 5. ln -s hooks.py nrpe-external-master-relation-changed
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# ln -s hooks.py local-monitors-relation-changed
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class CheckException(Exception):
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pass
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class Check(object):
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shortname_re = '[A-Za-z0-9-_]+$'
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service_template = ("""
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#---------------------------------------------------
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# This file is Juju managed
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#---------------------------------------------------
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define service {{
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use active-service
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host_name {nagios_hostname}
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service_description {nagios_hostname}[{shortname}] """
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"""{description}
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check_command check_nrpe!{command}
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servicegroups {nagios_servicegroup}
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}}
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""")
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def __init__(self, shortname, description, check_cmd):
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super(Check, self).__init__()
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# XXX: could be better to calculate this from the service name
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if not re.match(self.shortname_re, shortname):
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raise CheckException("shortname must match {}".format(
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Check.shortname_re))
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self.shortname = shortname
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self.command = "check_{}".format(shortname)
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# Note: a set of invalid characters is defined by the
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# Nagios server config
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# The default is: illegal_object_name_chars=`~!$%^&*"|'<>?,()=
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self.description = description
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self.check_cmd = self._locate_cmd(check_cmd)
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def _locate_cmd(self, check_cmd):
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search_path = (
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'/usr/lib/nagios/plugins',
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'/usr/local/lib/nagios/plugins',
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)
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parts = shlex.split(check_cmd)
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for path in search_path:
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if os.path.exists(os.path.join(path, parts[0])):
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command = os.path.join(path, parts[0])
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if len(parts) > 1:
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command += " " + " ".join(parts[1:])
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return command
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log('Check command not found: {}'.format(parts[0]))
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return ''
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def write(self, nagios_context, hostname, nagios_servicegroups):
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nrpe_check_file = '/etc/nagios/nrpe.d/{}.cfg'.format(
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self.command)
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with open(nrpe_check_file, 'w') as nrpe_check_config:
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nrpe_check_config.write("# check {}\n".format(self.shortname))
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nrpe_check_config.write("command[{}]={}\n".format(
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self.command, self.check_cmd))
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if not os.path.exists(NRPE.nagios_exportdir):
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log('Not writing service config as {} is not accessible'.format(
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NRPE.nagios_exportdir))
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else:
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self.write_service_config(nagios_context, hostname,
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nagios_servicegroups)
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def write_service_config(self, nagios_context, hostname,
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nagios_servicegroups):
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for f in os.listdir(NRPE.nagios_exportdir):
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if re.search('.*{}.cfg'.format(self.command), f):
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os.remove(os.path.join(NRPE.nagios_exportdir, f))
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templ_vars = {
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'nagios_hostname': hostname,
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'nagios_servicegroup': nagios_servicegroups,
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'description': self.description,
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'shortname': self.shortname,
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'command': self.command,
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}
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nrpe_service_text = Check.service_template.format(**templ_vars)
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nrpe_service_file = '{}/service__{}_{}.cfg'.format(
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NRPE.nagios_exportdir, hostname, self.command)
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with open(nrpe_service_file, 'w') as nrpe_service_config:
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nrpe_service_config.write(str(nrpe_service_text))
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def run(self):
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subprocess.call(self.check_cmd)
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class NRPE(object):
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nagios_logdir = '/var/log/nagios'
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nagios_exportdir = '/var/lib/nagios/export'
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nrpe_confdir = '/etc/nagios/nrpe.d'
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def __init__(self, hostname=None):
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super(NRPE, self).__init__()
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self.config = config()
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self.nagios_context = self.config['nagios_context']
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if 'nagios_servicegroups' in self.config and self.config['nagios_servicegroups']:
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self.nagios_servicegroups = self.config['nagios_servicegroups']
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else:
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self.nagios_servicegroups = self.nagios_context
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self.unit_name = local_unit().replace('/', '-')
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if hostname:
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self.hostname = hostname
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else:
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self.hostname = "{}-{}".format(self.nagios_context, self.unit_name)
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self.checks = []
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def add_check(self, *args, **kwargs):
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self.checks.append(Check(*args, **kwargs))
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def write(self):
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try:
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nagios_uid = pwd.getpwnam('nagios').pw_uid
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nagios_gid = grp.getgrnam('nagios').gr_gid
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except:
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log("Nagios user not set up, nrpe checks not updated")
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||||
return
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|
||||
if not os.path.exists(NRPE.nagios_logdir):
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os.mkdir(NRPE.nagios_logdir)
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os.chown(NRPE.nagios_logdir, nagios_uid, nagios_gid)
|
||||
|
||||
nrpe_monitors = {}
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monitors = {"monitors": {"remote": {"nrpe": nrpe_monitors}}}
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for nrpecheck in self.checks:
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||||
nrpecheck.write(self.nagios_context, self.hostname,
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self.nagios_servicegroups)
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||||
nrpe_monitors[nrpecheck.shortname] = {
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"command": nrpecheck.command,
|
||||
}
|
||||
|
||||
service('restart', 'nagios-nrpe-server')
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||||
|
||||
for rid in relation_ids("local-monitors"):
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relation_set(relation_id=rid, monitors=yaml.dump(monitors))
|
||||
|
||||
|
||||
def get_nagios_hostcontext(relation_name='nrpe-external-master'):
|
||||
"""
|
||||
Query relation with nrpe subordinate, return the nagios_host_context
|
||||
|
||||
:param str relation_name: Name of relation nrpe sub joined to
|
||||
"""
|
||||
for rel in relations_of_type(relation_name):
|
||||
if 'nagios_hostname' in rel:
|
||||
return rel['nagios_host_context']
|
||||
|
||||
|
||||
def get_nagios_hostname(relation_name='nrpe-external-master'):
|
||||
"""
|
||||
Query relation with nrpe subordinate, return the nagios_hostname
|
||||
|
||||
:param str relation_name: Name of relation nrpe sub joined to
|
||||
"""
|
||||
for rel in relations_of_type(relation_name):
|
||||
if 'nagios_hostname' in rel:
|
||||
return rel['nagios_hostname']
|
||||
|
||||
|
||||
def get_nagios_unit_name(relation_name='nrpe-external-master'):
|
||||
"""
|
||||
Return the nagios unit name prepended with host_context if needed
|
||||
|
||||
:param str relation_name: Name of relation nrpe sub joined to
|
||||
"""
|
||||
host_context = get_nagios_hostcontext(relation_name)
|
||||
if host_context:
|
||||
unit = "%s:%s" % (host_context, local_unit())
|
||||
else:
|
||||
unit = local_unit()
|
||||
return unit
|
||||
|
||||
|
||||
def add_init_service_checks(nrpe, services, unit_name):
|
||||
"""
|
||||
Add checks for each service in list
|
||||
|
||||
:param NRPE nrpe: NRPE object to add check to
|
||||
:param list services: List of services to check
|
||||
:param str unit_name: Unit name to use in check description
|
||||
"""
|
||||
for svc in services:
|
||||
upstart_init = '/etc/init/%s.conf' % svc
|
||||
sysv_init = '/etc/init.d/%s' % svc
|
||||
if os.path.exists(upstart_init):
|
||||
nrpe.add_check(
|
||||
shortname=svc,
|
||||
description='process check {%s}' % unit_name,
|
||||
check_cmd='check_upstart_job %s' % svc
|
||||
)
|
||||
elif os.path.exists(sysv_init):
|
||||
cronpath = '/etc/cron.d/nagios-service-check-%s' % svc
|
||||
cron_file = ('*/5 * * * * root '
|
||||
'/usr/local/lib/nagios/plugins/check_exit_status.pl '
|
||||
'-s /etc/init.d/%s status > '
|
||||
'/var/lib/nagios/service-check-%s.txt\n' % (svc,
|
||||
svc)
|
||||
)
|
||||
f = open(cronpath, 'w')
|
||||
f.write(cron_file)
|
||||
f.close()
|
||||
nrpe.add_check(
|
||||
shortname=svc,
|
||||
description='process check {%s}' % unit_name,
|
||||
check_cmd='check_status_file.py -f '
|
||||
'/var/lib/nagios/service-check-%s.txt' % svc,
|
||||
)
|
||||
|
||||
|
||||
def copy_nrpe_checks():
|
||||
"""
|
||||
Copy the nrpe checks into place
|
||||
|
||||
"""
|
||||
NAGIOS_PLUGINS = '/usr/local/lib/nagios/plugins'
|
||||
nrpe_files_dir = os.path.join(os.getenv('CHARM_DIR'), 'hooks',
|
||||
'charmhelpers', 'contrib', 'openstack',
|
||||
'files')
|
||||
|
||||
if not os.path.exists(NAGIOS_PLUGINS):
|
||||
os.makedirs(NAGIOS_PLUGINS)
|
||||
for fname in glob.glob(os.path.join(nrpe_files_dir, "check_*")):
|
||||
if os.path.isfile(fname):
|
||||
shutil.copy2(fname,
|
||||
os.path.join(NAGIOS_PLUGINS, os.path.basename(fname)))
|
||||
|
||||
|
||||
def add_haproxy_checks(nrpe, unit_name):
|
||||
"""
|
||||
Add checks for each service in list
|
||||
|
||||
:param NRPE nrpe: NRPE object to add check to
|
||||
:param str unit_name: Unit name to use in check description
|
||||
"""
|
||||
nrpe.add_check(
|
||||
shortname='haproxy_servers',
|
||||
description='Check HAProxy {%s}' % unit_name,
|
||||
check_cmd='check_haproxy.sh')
|
||||
nrpe.add_check(
|
||||
shortname='haproxy_queue',
|
||||
description='Check HAProxy queue depth {%s}' % unit_name,
|
||||
check_cmd='check_haproxy_queue_depth.sh')
|
|
@ -0,0 +1,175 @@
|
|||
# Copyright 2014-2015 Canonical Limited.
|
||||
#
|
||||
# This file is part of charm-helpers.
|
||||
#
|
||||
# charm-helpers is free software: you can redistribute it and/or modify
|
||||
# it under the terms of the GNU Lesser General Public License version 3 as
|
||||
# published by the Free Software Foundation.
|
||||
#
|
||||
# charm-helpers is distributed in the hope that it will be useful,
|
||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
# GNU Lesser General Public License for more details.
|
||||
#
|
||||
# You should have received a copy of the GNU Lesser General Public License
|
||||
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
'''
|
||||
Functions for managing volumes in juju units. One volume is supported per unit.
|
||||
Subordinates may have their own storage, provided it is on its own partition.
|
||||
|
||||
Configuration stanzas::
|
||||
|
||||
volume-ephemeral:
|
||||
type: boolean
|
||||
default: true
|
||||
description: >
|
||||
If false, a volume is mounted as sepecified in "volume-map"
|
||||
If true, ephemeral storage will be used, meaning that log data
|
||||
will only exist as long as the machine. YOU HAVE BEEN WARNED.
|
||||
volume-map:
|
||||
type: string
|
||||
default: {}
|
||||
description: >
|
||||
YAML map of units to device names, e.g:
|
||||
"{ rsyslog/0: /dev/vdb, rsyslog/1: /dev/vdb }"
|
||||
Service units will raise a configure-error if volume-ephemeral
|
||||
is 'true' and no volume-map value is set. Use 'juju set' to set a
|
||||
value and 'juju resolved' to complete configuration.
|
||||
|
||||
Usage::
|
||||
|
||||
from charmsupport.volumes import configure_volume, VolumeConfigurationError
|
||||
from charmsupport.hookenv import log, ERROR
|
||||
def post_mount_hook():
|
||||
stop_service('myservice')
|
||||
def post_mount_hook():
|
||||
start_service('myservice')
|
||||
|
||||
if __name__ == '__main__':
|
||||
try:
|
||||
configure_volume(before_change=pre_mount_hook,
|
||||
after_change=post_mount_hook)
|
||||
except VolumeConfigurationError:
|
||||
log('Storage could not be configured', ERROR)
|
||||
|
||||
'''
|
||||
|
||||
# XXX: Known limitations
|
||||
# - fstab is neither consulted nor updated
|
||||
|
||||
import os
|
||||
from charmhelpers.core import hookenv
|
||||
from charmhelpers.core import host
|
||||
import yaml
|
||||
|
||||
|
||||
MOUNT_BASE = '/srv/juju/volumes'
|
||||
|
||||
|
||||
class VolumeConfigurationError(Exception):
|
||||
'''Volume configuration data is missing or invalid'''
|
||||
pass
|
||||
|
||||
|
||||
def get_config():
|
||||
'''Gather and sanity-check volume configuration data'''
|
||||
volume_config = {}
|
||||
config = hookenv.config()
|
||||
|
||||
errors = False
|
||||
|
||||
if config.get('volume-ephemeral') in (True, 'True', 'true', 'Yes', 'yes'):
|
||||
volume_config['ephemeral'] = True
|
||||
else:
|
||||
volume_config['ephemeral'] = False
|
||||
|
||||
try:
|
||||
volume_map = yaml.safe_load(config.get('volume-map', '{}'))
|
||||
except yaml.YAMLError as e:
|
||||
hookenv.log("Error parsing YAML volume-map: {}".format(e),
|
||||
hookenv.ERROR)
|
||||
errors = True
|
||||
if volume_map is None:
|
||||
# probably an empty string
|
||||
volume_map = {}
|
||||
elif not isinstance(volume_map, dict):
|
||||
hookenv.log("Volume-map should be a dictionary, not {}".format(
|
||||
type(volume_map)))
|
||||
errors = True
|
||||
|
||||
volume_config['device'] = volume_map.get(os.environ['JUJU_UNIT_NAME'])
|
||||
if volume_config['device'] and volume_config['ephemeral']:
|
||||
# asked for ephemeral storage but also defined a volume ID
|
||||
hookenv.log('A volume is defined for this unit, but ephemeral '
|
||||
'storage was requested', hookenv.ERROR)
|
||||
errors = True
|
||||
elif not volume_config['device'] and not volume_config['ephemeral']:
|
||||
# asked for permanent storage but did not define volume ID
|
||||
hookenv.log('Ephemeral storage was requested, but there is no volume '
|
||||
'defined for this unit.', hookenv.ERROR)
|
||||
errors = True
|
||||
|
||||
unit_mount_name = hookenv.local_unit().replace('/', '-')
|
||||
volume_config['mountpoint'] = os.path.join(MOUNT_BASE, unit_mount_name)
|
||||
|
||||
if errors:
|
||||
return None
|
||||
return volume_config
|
||||
|
||||
|
||||
def mount_volume(config):
|
||||
if os.path.exists(config['mountpoint']):
|
||||
if not os.path.isdir(config['mountpoint']):
|
||||
hookenv.log('Not a directory: {}'.format(config['mountpoint']))
|
||||
raise VolumeConfigurationError()
|
||||
else:
|
||||
host.mkdir(config['mountpoint'])
|
||||
if os.path.ismount(config['mountpoint']):
|
||||
unmount_volume(config)
|
||||
if not host.mount(config['device'], config['mountpoint'], persist=True):
|
||||
raise VolumeConfigurationError()
|
||||
|
||||
|
||||
def unmount_volume(config):
|
||||
if os.path.ismount(config['mountpoint']):
|
||||
if not host.umount(config['mountpoint'], persist=True):
|
||||
raise VolumeConfigurationError()
|
||||
|
||||
|
||||
def managed_mounts():
|
||||
'''List of all mounted managed volumes'''
|
||||
return filter(lambda mount: mount[0].startswith(MOUNT_BASE), host.mounts())
|
||||
|
||||
|
||||
def configure_volume(before_change=lambda: None, after_change=lambda: None):
|
||||
'''Set up storage (or don't) according to the charm's volume configuration.
|
||||
Returns the mount point or "ephemeral". before_change and after_change
|
||||
are optional functions to be called if the volume configuration changes.
|
||||
'''
|
||||
|
||||
config = get_config()
|
||||
if not config:
|
||||
hookenv.log('Failed to read volume configuration', hookenv.CRITICAL)
|
||||
raise VolumeConfigurationError()
|
||||
|
||||
if config['ephemeral']:
|
||||
if os.path.ismount(config['mountpoint']):
|
||||
before_change()
|
||||
unmount_volume(config)
|
||||
after_change()
|
||||
return 'ephemeral'
|
||||
else:
|
||||
# persistent storage
|
||||
if os.path.ismount(config['mountpoint']):
|
||||
mounts = dict(managed_mounts())
|
||||
if mounts.get(config['mountpoint']) != config['device']:
|
||||
before_change()
|
||||
unmount_volume(config)
|
||||
mount_volume(config)
|
||||
after_change()
|
||||
else:
|
||||
before_change()
|
||||
mount_volume(config)
|
||||
after_change()
|
||||
return config['mountpoint']
|
|
@ -48,6 +48,9 @@ from charmhelpers.core.hookenv import (
|
|||
from charmhelpers.core.decorators import (
|
||||
retry_on_exception,
|
||||
)
|
||||
from charmhelpers.core.strutils import (
|
||||
bool_from_string,
|
||||
)
|
||||
|
||||
|
||||
class HAIncompleteConfig(Exception):
|
||||
|
@ -164,7 +167,8 @@ def https():
|
|||
.
|
||||
returns: boolean
|
||||
'''
|
||||
if config_get('use-https') == "yes":
|
||||
use_https = config_get('use-https')
|
||||
if use_https and bool_from_string(use_https):
|
||||
return True
|
||||
if config_get('ssl_cert') and config_get('ssl_key'):
|
||||
return True
|
||||
|
|
|
@ -17,11 +17,11 @@
|
|||
# You should have received a copy of the GNU Lesser General Public License
|
||||
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
__author__ = 'Jorge Niedbalski R. <jorge.niedbalski@canonical.com>'
|
||||
|
||||
import io
|
||||
import os
|
||||
|
||||
__author__ = 'Jorge Niedbalski R. <jorge.niedbalski@canonical.com>'
|
||||
|
||||
|
||||
class Fstab(io.FileIO):
|
||||
"""This class extends file in order to implement a file reader/writer
|
||||
|
@ -77,7 +77,7 @@ class Fstab(io.FileIO):
|
|||
for line in self.readlines():
|
||||
line = line.decode('us-ascii')
|
||||
try:
|
||||
if line.strip() and not line.startswith("#"):
|
||||
if line.strip() and not line.strip().startswith("#"):
|
||||
yield self._hydrate_entry(line)
|
||||
except ValueError:
|
||||
pass
|
||||
|
@ -104,7 +104,7 @@ class Fstab(io.FileIO):
|
|||
|
||||
found = False
|
||||
for index, line in enumerate(lines):
|
||||
if not line.startswith("#"):
|
||||
if line.strip() and not line.strip().startswith("#"):
|
||||
if self._hydrate_entry(line) == entry:
|
||||
found = True
|
||||
break
|
||||
|
|
|
@ -305,11 +305,11 @@ def restart_on_change(restart_map, stopstart=False):
|
|||
ceph_client_changed function.
|
||||
"""
|
||||
def wrap(f):
|
||||
def wrapped_f(*args):
|
||||
def wrapped_f(*args, **kwargs):
|
||||
checksums = {}
|
||||
for path in restart_map:
|
||||
checksums[path] = file_hash(path)
|
||||
f(*args)
|
||||
f(*args, **kwargs)
|
||||
restarts = []
|
||||
for path in restart_map:
|
||||
if checksums[path] != file_hash(path):
|
||||
|
|
|
@ -0,0 +1,42 @@
|
|||
#!/usr/bin/env python
|
||||
# -*- coding: utf-8 -*-
|
||||
|
||||
# Copyright 2014-2015 Canonical Limited.
|
||||
#
|
||||
# This file is part of charm-helpers.
|
||||
#
|
||||
# charm-helpers is free software: you can redistribute it and/or modify
|
||||
# it under the terms of the GNU Lesser General Public License version 3 as
|
||||
# published by the Free Software Foundation.
|
||||
#
|
||||
# charm-helpers is distributed in the hope that it will be useful,
|
||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
# GNU Lesser General Public License for more details.
|
||||
#
|
||||
# You should have received a copy of the GNU Lesser General Public License
|
||||
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
import six
|
||||
|
||||
|
||||
def bool_from_string(value):
|
||||
"""Interpret string value as boolean.
|
||||
|
||||
Returns True if value translates to True otherwise False.
|
||||
"""
|
||||
if isinstance(value, six.string_types):
|
||||
value = six.text_type(value)
|
||||
else:
|
||||
msg = "Unable to interpret non-string value '%s' as boolean" % (value)
|
||||
raise ValueError(msg)
|
||||
|
||||
value = value.strip().lower()
|
||||
|
||||
if value in ['y', 'yes', 'true', 't']:
|
||||
return True
|
||||
elif value in ['n', 'no', 'false', 'f']:
|
||||
return False
|
||||
|
||||
msg = "Unable to interpret string value '%s' as boolean" % (value)
|
||||
raise ValueError(msg)
|
|
@ -17,8 +17,6 @@
|
|||
# You should have received a copy of the GNU Lesser General Public License
|
||||
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
__author__ = 'Jorge Niedbalski R. <jorge.niedbalski@canonical.com>'
|
||||
|
||||
import yaml
|
||||
|
||||
from subprocess import check_call
|
||||
|
@ -29,6 +27,8 @@ from charmhelpers.core.hookenv import (
|
|||
ERROR,
|
||||
)
|
||||
|
||||
__author__ = 'Jorge Niedbalski R. <jorge.niedbalski@canonical.com>'
|
||||
|
||||
|
||||
def create(sysctl_dict, sysctl_file):
|
||||
"""Creates a sysctl.conf file from a YAML associative array
|
||||
|
|
|
@ -0,0 +1,477 @@
|
|||
#!/usr/bin/env python
|
||||
# -*- coding: utf-8 -*-
|
||||
#
|
||||
# Copyright 2014-2015 Canonical Limited.
|
||||
#
|
||||
# This file is part of charm-helpers.
|
||||
#
|
||||
# charm-helpers is free software: you can redistribute it and/or modify
|
||||
# it under the terms of the GNU Lesser General Public License version 3 as
|
||||
# published by the Free Software Foundation.
|
||||
#
|
||||
# charm-helpers is distributed in the hope that it will be useful,
|
||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
# GNU Lesser General Public License for more details.
|
||||
#
|
||||
# You should have received a copy of the GNU Lesser General Public License
|
||||
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
|
||||
#
|
||||
#
|
||||
# Authors:
|
||||
# Kapil Thangavelu <kapil.foss@gmail.com>
|
||||
#
|
||||
"""
|
||||
Intro
|
||||
-----
|
||||
|
||||
A simple way to store state in units. This provides a key value
|
||||
storage with support for versioned, transactional operation,
|
||||
and can calculate deltas from previous values to simplify unit logic
|
||||
when processing changes.
|
||||
|
||||
|
||||
Hook Integration
|
||||
----------------
|
||||
|
||||
There are several extant frameworks for hook execution, including
|
||||
|
||||
- charmhelpers.core.hookenv.Hooks
|
||||
- charmhelpers.core.services.ServiceManager
|
||||
|
||||
The storage classes are framework agnostic, one simple integration is
|
||||
via the HookData contextmanager. It will record the current hook
|
||||
execution environment (including relation data, config data, etc.),
|
||||
setup a transaction and allow easy access to the changes from
|
||||
previously seen values. One consequence of the integration is the
|
||||
reservation of particular keys ('rels', 'unit', 'env', 'config',
|
||||
'charm_revisions') for their respective values.
|
||||
|
||||
Here's a fully worked integration example using hookenv.Hooks::
|
||||
|
||||
from charmhelper.core import hookenv, unitdata
|
||||
|
||||
hook_data = unitdata.HookData()
|
||||
db = unitdata.kv()
|
||||
hooks = hookenv.Hooks()
|
||||
|
||||
@hooks.hook
|
||||
def config_changed():
|
||||
# Print all changes to configuration from previously seen
|
||||
# values.
|
||||
for changed, (prev, cur) in hook_data.conf.items():
|
||||
print('config changed', changed,
|
||||
'previous value', prev,
|
||||
'current value', cur)
|
||||
|
||||
# Get some unit specific bookeeping
|
||||
if not db.get('pkg_key'):
|
||||
key = urllib.urlopen('https://example.com/pkg_key').read()
|
||||
db.set('pkg_key', key)
|
||||
|
||||
# Directly access all charm config as a mapping.
|
||||
conf = db.getrange('config', True)
|
||||
|
||||
# Directly access all relation data as a mapping
|
||||
rels = db.getrange('rels', True)
|
||||
|
||||
if __name__ == '__main__':
|
||||
with hook_data():
|
||||
hook.execute()
|
||||
|
||||
|
||||
A more basic integration is via the hook_scope context manager which simply
|
||||
manages transaction scope (and records hook name, and timestamp)::
|
||||
|
||||
>>> from unitdata import kv
|
||||
>>> db = kv()
|
||||
>>> with db.hook_scope('install'):
|
||||
... # do work, in transactional scope.
|
||||
... db.set('x', 1)
|
||||
>>> db.get('x')
|
||||
1
|
||||
|
||||
|
||||
Usage
|
||||
-----
|
||||
|
||||
Values are automatically json de/serialized to preserve basic typing
|
||||
and complex data struct capabilities (dicts, lists, ints, booleans, etc).
|
||||
|
||||
Individual values can be manipulated via get/set::
|
||||
|
||||
>>> kv.set('y', True)
|
||||
>>> kv.get('y')
|
||||
True
|
||||
|
||||
# We can set complex values (dicts, lists) as a single key.
|
||||
>>> kv.set('config', {'a': 1, 'b': True'})
|
||||
|
||||
# Also supports returning dictionaries as a record which
|
||||
# provides attribute access.
|
||||
>>> config = kv.get('config', record=True)
|
||||
>>> config.b
|
||||
True
|
||||
|
||||
|
||||
Groups of keys can be manipulated with update/getrange::
|
||||
|
||||
>>> kv.update({'z': 1, 'y': 2}, prefix="gui.")
|
||||
>>> kv.getrange('gui.', strip=True)
|
||||
{'z': 1, 'y': 2}
|
||||
|
||||
When updating values, its very helpful to understand which values
|
||||
have actually changed and how have they changed. The storage
|
||||
provides a delta method to provide for this::
|
||||
|
||||
>>> data = {'debug': True, 'option': 2}
|
||||
>>> delta = kv.delta(data, 'config.')
|
||||
>>> delta.debug.previous
|
||||
None
|
||||
>>> delta.debug.current
|
||||
True
|
||||
>>> delta
|
||||
{'debug': (None, True), 'option': (None, 2)}
|
||||
|
||||
Note the delta method does not persist the actual change, it needs to
|
||||
be explicitly saved via 'update' method::
|
||||
|
||||
>>> kv.update(data, 'config.')
|
||||
|
||||
Values modified in the context of a hook scope retain historical values
|
||||
associated to the hookname.
|
||||
|
||||
>>> with db.hook_scope('config-changed'):
|
||||
... db.set('x', 42)
|
||||
>>> db.gethistory('x')
|
||||
[(1, u'x', 1, u'install', u'2015-01-21T16:49:30.038372'),
|
||||
(2, u'x', 42, u'config-changed', u'2015-01-21T16:49:30.038786')]
|
||||
|
||||
"""
|
||||
|
||||
import collections
|
||||
import contextlib
|
||||
import datetime
|
||||
import json
|
||||
import os
|
||||
import pprint
|
||||
import sqlite3
|
||||
import sys
|
||||
|
||||
__author__ = 'Kapil Thangavelu <kapil.foss@gmail.com>'
|
||||
|
||||
|
||||
class Storage(object):
|
||||
"""Simple key value database for local unit state within charms.
|
||||
|
||||
Modifications are automatically committed at hook exit. That's
|
||||
currently regardless of exit code.
|
||||
|
||||
To support dicts, lists, integer, floats, and booleans values
|
||||
are automatically json encoded/decoded.
|
||||
"""
|
||||
def __init__(self, path=None):
|
||||
self.db_path = path
|
||||
if path is None:
|
||||
self.db_path = os.path.join(
|
||||
os.environ.get('CHARM_DIR', ''), '.unit-state.db')
|
||||
self.conn = sqlite3.connect('%s' % self.db_path)
|
||||
self.cursor = self.conn.cursor()
|
||||
self.revision = None
|
||||
self._closed = False
|
||||
self._init()
|
||||
|
||||
def close(self):
|
||||
if self._closed:
|
||||
return
|
||||
self.flush(False)
|
||||
self.cursor.close()
|
||||
self.conn.close()
|
||||
self._closed = True
|
||||
|
||||
def _scoped_query(self, stmt, params=None):
|
||||
if params is None:
|
||||
params = []
|
||||
return stmt, params
|
||||
|
||||
def get(self, key, default=None, record=False):
|
||||
self.cursor.execute(
|
||||
*self._scoped_query(
|
||||
'select data from kv where key=?', [key]))
|
||||
result = self.cursor.fetchone()
|
||||
if not result:
|
||||
return default
|
||||
if record:
|
||||
return Record(json.loads(result[0]))
|
||||
return json.loads(result[0])
|
||||
|
||||
def getrange(self, key_prefix, strip=False):
|
||||
stmt = "select key, data from kv where key like '%s%%'" % key_prefix
|
||||
self.cursor.execute(*self._scoped_query(stmt))
|
||||
result = self.cursor.fetchall()
|
||||
|
||||
if not result:
|
||||
return None
|
||||
if not strip:
|
||||
key_prefix = ''
|
||||
return dict([
|
||||
(k[len(key_prefix):], json.loads(v)) for k, v in result])
|
||||
|
||||
def update(self, mapping, prefix=""):
|
||||
for k, v in mapping.items():
|
||||
self.set("%s%s" % (prefix, k), v)
|
||||
|
||||
def unset(self, key):
|
||||
self.cursor.execute('delete from kv where key=?', [key])
|
||||
if self.revision and self.cursor.rowcount:
|
||||
self.cursor.execute(
|
||||
'insert into kv_revisions values (?, ?, ?)',
|
||||
[key, self.revision, json.dumps('DELETED')])
|
||||
|
||||
def set(self, key, value):
|
||||
serialized = json.dumps(value)
|
||||
|
||||
self.cursor.execute(
|
||||
'select data from kv where key=?', [key])
|
||||
exists = self.cursor.fetchone()
|
||||
|
||||
# Skip mutations to the same value
|
||||
if exists:
|
||||
if exists[0] == serialized:
|
||||
return value
|
||||
|
||||
if not exists:
|
||||
self.cursor.execute(
|
||||
'insert into kv (key, data) values (?, ?)',
|
||||
(key, serialized))
|
||||
else:
|
||||
self.cursor.execute('''
|
||||
update kv
|
||||
set data = ?
|
||||
where key = ?''', [serialized, key])
|
||||
|
||||
# Save
|
||||
if not self.revision:
|
||||
return value
|
||||
|
||||
self.cursor.execute(
|
||||
'select 1 from kv_revisions where key=? and revision=?',
|
||||
[key, self.revision])
|
||||
exists = self.cursor.fetchone()
|
||||
|
||||
if not exists:
|
||||
self.cursor.execute(
|
||||
'''insert into kv_revisions (
|
||||
revision, key, data) values (?, ?, ?)''',
|
||||
(self.revision, key, serialized))
|
||||
else:
|
||||
self.cursor.execute(
|
||||
'''
|
||||
update kv_revisions
|
||||
set data = ?
|
||||
where key = ?
|
||||
and revision = ?''',
|
||||
[serialized, key, self.revision])
|
||||
|
||||
return value
|
||||
|
||||
def delta(self, mapping, prefix):
|
||||
"""
|
||||
return a delta containing values that have changed.
|
||||
"""
|
||||
previous = self.getrange(prefix, strip=True)
|
||||
if not previous:
|
||||
pk = set()
|
||||
else:
|
||||
pk = set(previous.keys())
|
||||
ck = set(mapping.keys())
|
||||
delta = DeltaSet()
|
||||
|
||||
# added
|
||||
for k in ck.difference(pk):
|
||||
delta[k] = Delta(None, mapping[k])
|
||||
|
||||
# removed
|
||||
for k in pk.difference(ck):
|
||||
delta[k] = Delta(previous[k], None)
|
||||
|
||||
# changed
|
||||
for k in pk.intersection(ck):
|
||||
c = mapping[k]
|
||||
p = previous[k]
|
||||
if c != p:
|
||||
delta[k] = Delta(p, c)
|
||||
|
||||
return delta
|
||||
|
||||
@contextlib.contextmanager
|
||||
def hook_scope(self, name=""):
|
||||
"""Scope all future interactions to the current hook execution
|
||||
revision."""
|
||||
assert not self.revision
|
||||
self.cursor.execute(
|
||||
'insert into hooks (hook, date) values (?, ?)',
|
||||
(name or sys.argv[0],
|
||||
datetime.datetime.utcnow().isoformat()))
|
||||
self.revision = self.cursor.lastrowid
|
||||
try:
|
||||
yield self.revision
|
||||
self.revision = None
|
||||
except:
|
||||
self.flush(False)
|
||||
self.revision = None
|
||||
raise
|
||||
else:
|
||||
self.flush()
|
||||
|
||||
def flush(self, save=True):
|
||||
if save:
|
||||
self.conn.commit()
|
||||
elif self._closed:
|
||||
return
|
||||
else:
|
||||
self.conn.rollback()
|
||||
|
||||
def _init(self):
|
||||
self.cursor.execute('''
|
||||
create table if not exists kv (
|
||||
key text,
|
||||
data text,
|
||||
primary key (key)
|
||||
)''')
|
||||
self.cursor.execute('''
|
||||
create table if not exists kv_revisions (
|
||||
key text,
|
||||
revision integer,
|
||||
data text,
|
||||
primary key (key, revision)
|
||||
)''')
|
||||
self.cursor.execute('''
|
||||
create table if not exists hooks (
|
||||
version integer primary key autoincrement,
|
||||
hook text,
|
||||
date text
|
||||
)''')
|
||||
self.conn.commit()
|
||||
|
||||
def gethistory(self, key, deserialize=False):
|
||||
self.cursor.execute(
|
||||
'''
|
||||
select kv.revision, kv.key, kv.data, h.hook, h.date
|
||||
from kv_revisions kv,
|
||||
hooks h
|
||||
where kv.key=?
|
||||
and kv.revision = h.version
|
||||
''', [key])
|
||||
if deserialize is False:
|
||||
return self.cursor.fetchall()
|
||||
return map(_parse_history, self.cursor.fetchall())
|
||||
|
||||
def debug(self, fh=sys.stderr):
|
||||
self.cursor.execute('select * from kv')
|
||||
pprint.pprint(self.cursor.fetchall(), stream=fh)
|
||||
self.cursor.execute('select * from kv_revisions')
|
||||
pprint.pprint(self.cursor.fetchall(), stream=fh)
|
||||
|
||||
|
||||
def _parse_history(d):
|
||||
return (d[0], d[1], json.loads(d[2]), d[3],
|
||||
datetime.datetime.strptime(d[-1], "%Y-%m-%dT%H:%M:%S.%f"))
|
||||
|
||||
|
||||
class HookData(object):
|
||||
"""Simple integration for existing hook exec frameworks.
|
||||
|
||||
Records all unit information, and stores deltas for processing
|
||||
by the hook.
|
||||
|
||||
Sample::
|
||||
|
||||
from charmhelper.core import hookenv, unitdata
|
||||
|
||||
changes = unitdata.HookData()
|
||||
db = unitdata.kv()
|
||||
hooks = hookenv.Hooks()
|
||||
|
||||
@hooks.hook
|
||||
def config_changed():
|
||||
# View all changes to configuration
|
||||
for changed, (prev, cur) in changes.conf.items():
|
||||
print('config changed', changed,
|
||||
'previous value', prev,
|
||||
'current value', cur)
|
||||
|
||||
# Get some unit specific bookeeping
|
||||
if not db.get('pkg_key'):
|
||||
key = urllib.urlopen('https://example.com/pkg_key').read()
|
||||
db.set('pkg_key', key)
|
||||
|
||||
if __name__ == '__main__':
|
||||
with changes():
|
||||
hook.execute()
|
||||
|
||||
"""
|
||||
def __init__(self):
|
||||
self.kv = kv()
|
||||
self.conf = None
|
||||
self.rels = None
|
||||
|
||||
@contextlib.contextmanager
|
||||
def __call__(self):
|
||||
from charmhelpers.core import hookenv
|
||||
hook_name = hookenv.hook_name()
|
||||
|
||||
with self.kv.hook_scope(hook_name):
|
||||
self._record_charm_version(hookenv.charm_dir())
|
||||
delta_config, delta_relation = self._record_hook(hookenv)
|
||||
yield self.kv, delta_config, delta_relation
|
||||
|
||||
def _record_charm_version(self, charm_dir):
|
||||
# Record revisions.. charm revisions are meaningless
|
||||
# to charm authors as they don't control the revision.
|
||||
# so logic dependnent on revision is not particularly
|
||||
# useful, however it is useful for debugging analysis.
|
||||
charm_rev = open(
|
||||
os.path.join(charm_dir, 'revision')).read().strip()
|
||||
charm_rev = charm_rev or '0'
|
||||
revs = self.kv.get('charm_revisions', [])
|
||||
if charm_rev not in revs:
|
||||
revs.append(charm_rev.strip() or '0')
|
||||
self.kv.set('charm_revisions', revs)
|
||||
|
||||
def _record_hook(self, hookenv):
|
||||
data = hookenv.execution_environment()
|
||||
self.conf = conf_delta = self.kv.delta(data['conf'], 'config')
|
||||
self.rels = rels_delta = self.kv.delta(data['rels'], 'rels')
|
||||
self.kv.set('env', data['env'])
|
||||
self.kv.set('unit', data['unit'])
|
||||
self.kv.set('relid', data.get('relid'))
|
||||
return conf_delta, rels_delta
|
||||
|
||||
|
||||
class Record(dict):
|
||||
|
||||
__slots__ = ()
|
||||
|
||||
def __getattr__(self, k):
|
||||
if k in self:
|
||||
return self[k]
|
||||
raise AttributeError(k)
|
||||
|
||||
|
||||
class DeltaSet(Record):
|
||||
|
||||
__slots__ = ()
|
||||
|
||||
|
||||
Delta = collections.namedtuple('Delta', ['previous', 'current'])
|
||||
|
||||
|
||||
_KV = None
|
||||
|
||||
|
||||
def kv():
|
||||
global _KV
|
||||
if _KV is None:
|
||||
_KV = Storage()
|
||||
return _KV
|
|
@ -18,6 +18,16 @@ import os
|
|||
import hashlib
|
||||
import re
|
||||
|
||||
from charmhelpers.fetch import (
|
||||
BaseFetchHandler,
|
||||
UnhandledSource
|
||||
)
|
||||
from charmhelpers.payload.archive import (
|
||||
get_archive_handler,
|
||||
extract,
|
||||
)
|
||||
from charmhelpers.core.host import mkdir, check_hash
|
||||
|
||||
import six
|
||||
if six.PY3:
|
||||
from urllib.request import (
|
||||
|
@ -35,16 +45,6 @@ else:
|
|||
)
|
||||
from urlparse import urlparse, urlunparse, parse_qs
|
||||
|
||||
from charmhelpers.fetch import (
|
||||
BaseFetchHandler,
|
||||
UnhandledSource
|
||||
)
|
||||
from charmhelpers.payload.archive import (
|
||||
get_archive_handler,
|
||||
extract,
|
||||
)
|
||||
from charmhelpers.core.host import mkdir, check_hash
|
||||
|
||||
|
||||
def splituser(host):
|
||||
'''urllib.splituser(), but six's support of this seems broken'''
|
||||
|
|
|
@ -32,7 +32,7 @@ except ImportError:
|
|||
apt_install("python-git")
|
||||
from git import Repo
|
||||
|
||||
from git.exc import GitCommandError
|
||||
from git.exc import GitCommandError # noqa E402
|
||||
|
||||
|
||||
class GitUrlFetchHandler(BaseFetchHandler):
|
||||
|
|
|
@ -69,6 +69,8 @@ from charmhelpers.contrib.network.ip import (
|
|||
is_address_in_network,
|
||||
)
|
||||
|
||||
from charmhelpers.contrib.charmsupport import nrpe
|
||||
|
||||
hooks = Hooks()
|
||||
|
||||
LEADER_RES = 'grp_percona_cluster'
|
||||
|
@ -426,6 +428,23 @@ def ha_relation_changed():
|
|||
relation_clear(r_id)
|
||||
|
||||
|
||||
@hooks.hook('nrpe-external-master-relation-joined',
|
||||
'nrpe-external-master-relation-changed')
|
||||
def update_nrpe_config():
|
||||
# python-dbus is used by check_upstart_job
|
||||
apt_install('python-dbus')
|
||||
hostname = nrpe.get_nagios_hostname()
|
||||
current_unit = nrpe.get_nagios_unit_name()
|
||||
nrpe_setup = nrpe.NRPE(hostname=hostname)
|
||||
nrpe.add_init_service_checks(nrpe_setup, 'mysql', current_unit)
|
||||
nrpe_setup.add_check(
|
||||
shortname='mysql_proc',
|
||||
description='Check MySQL process {%s}' % current_unit,
|
||||
check_cmd='check_procs -c 1:1 -C mysqld'
|
||||
)
|
||||
nrpe_setup.write()
|
||||
|
||||
|
||||
def main():
|
||||
try:
|
||||
hooks.execute(sys.argv)
|
||||
|
|
Loading…
Reference in New Issue