synced /next

charm-helpers-hooks.yaml

@@ -13,3 +13,4 @@ include:
     - contrib.peerstorage
     - contrib.network.ip
     - contrib.python.packages
+    - contrib.charmsupport

config.yaml

@@ -138,6 +138,18 @@ options:
       .
       If multiple networks are being used, a VIP should be provided for each
       network, separated by spaces.
+  vip_iface:
+    type: string
+    default: eth0
+    description: |
+      Default network interface to use for HA vip when it cannot be automatically
+      determined.
+  vip_cidr:
+    type: int
+    default: 24
+    description: |
+      Default CIDR netmask to use for HA vip when it cannot be automatically
+      determined.
   ha-bindiface:
     type: string
     default: eth0
@@ -226,3 +238,14 @@ options:
       The CPU core multiplier to use when configuring worker processes for
       Keystone.  By default, the number of workers for each daemon is set to
       twice the number of CPU cores a service unit has.
+  nagios_context:
+    default: "juju"
+    type: string
+    description: |
+      Used by the nrpe-external-master subordinate charm.
+      A string that will be prepended to instance name to set the host name
+      in nagios. So for instance the hostname would be something like:
+          juju-myservice-0
+      If you're running multiple environments with the same services in them
+      this allows you to differentiate between them.
+

hooks/charmhelpers/contrib/charmsupport/nrpe.py

@@ -0,0 +1,308 @@
+"""Compatibility with the nrpe-external-master charm"""
+# Copyright 2012 Canonical Ltd.
+#
+# Authors:
+#  Matthew Wedgwood <matthew.wedgwood@canonical.com>
+
+import subprocess
+import pwd
+import grp
+import os
+import re
+import shlex
+import yaml
+
+from charmhelpers.core.hookenv import (
+    config,
+    local_unit,
+    log,
+    relation_ids,
+    relation_set,
+    relations_of_type,
+)
+
+from charmhelpers.core.host import service
+
+# This module adds compatibility with the nrpe-external-master and plain nrpe
+# subordinate charms. To use it in your charm:
+#
+# 1. Update metadata.yaml
+#
+#   provides:
+#     (...)
+#     nrpe-external-master:
+#       interface: nrpe-external-master
+#       scope: container
+#
+#   and/or
+#
+#   provides:
+#     (...)
+#     local-monitors:
+#       interface: local-monitors
+#       scope: container
+
+#
+# 2. Add the following to config.yaml
+#
+#    nagios_context:
+#      default: "juju"
+#      type: string
+#      description: |
+#        Used by the nrpe subordinate charms.
+#        A string that will be prepended to instance name to set the host name
+#        in nagios. So for instance the hostname would be something like:
+#            juju-myservice-0
+#        If you're running multiple environments with the same services in them
+#        this allows you to differentiate between them.
+#    nagios_servicegroups:
+#      default: ""
+#      type: string
+#      description: |
+#        A comma-separated list of nagios servicegroups.
+#        If left empty, the nagios_context will be used as the servicegroup
+#
+# 3. Add custom checks (Nagios plugins) to files/nrpe-external-master
+#
+# 4. Update your hooks.py with something like this:
+#
+#    from charmsupport.nrpe import NRPE
+#    (...)
+#    def update_nrpe_config():
+#        nrpe_compat = NRPE()
+#        nrpe_compat.add_check(
+#            shortname = "myservice",
+#            description = "Check MyService",
+#            check_cmd = "check_http -w 2 -c 10 http://localhost"
+#            )
+#        nrpe_compat.add_check(
+#            "myservice_other",
+#            "Check for widget failures",
+#            check_cmd = "/srv/myapp/scripts/widget_check"
+#            )
+#        nrpe_compat.write()
+#
+#    def config_changed():
+#        (...)
+#        update_nrpe_config()
+#
+#    def nrpe_external_master_relation_changed():
+#        update_nrpe_config()
+#
+#    def local_monitors_relation_changed():
+#        update_nrpe_config()
+#
+# 5. ln -s hooks.py nrpe-external-master-relation-changed
+#    ln -s hooks.py local-monitors-relation-changed
+
+
+class CheckException(Exception):
+    pass
+
+
+class Check(object):
+    shortname_re = '[A-Za-z0-9-_]+$'
+    service_template = ("""
+#---------------------------------------------------
+# This file is Juju managed
+#---------------------------------------------------
+define service {{
+    use                             active-service
+    host_name                       {nagios_hostname}
+    service_description             {nagios_hostname}[{shortname}] """
+                        """{description}
+    check_command                   check_nrpe!{command}
+    servicegroups                   {nagios_servicegroup}
+}}
+""")
+
+    def __init__(self, shortname, description, check_cmd):
+        super(Check, self).__init__()
+        # XXX: could be better to calculate this from the service name
+        if not re.match(self.shortname_re, shortname):
+            raise CheckException("shortname must match {}".format(
+                Check.shortname_re))
+        self.shortname = shortname
+        self.command = "check_{}".format(shortname)
+        # Note: a set of invalid characters is defined by the
+        # Nagios server config
+        # The default is: illegal_object_name_chars=`~!$%^&*"|'<>?,()=
+        self.description = description
+        self.check_cmd = self._locate_cmd(check_cmd)
+
+    def _locate_cmd(self, check_cmd):
+        search_path = (
+            '/usr/lib/nagios/plugins',
+            '/usr/local/lib/nagios/plugins',
+        )
+        parts = shlex.split(check_cmd)
+        for path in search_path:
+            if os.path.exists(os.path.join(path, parts[0])):
+                command = os.path.join(path, parts[0])
+                if len(parts) > 1:
+                    command += " " + " ".join(parts[1:])
+                return command
+        log('Check command not found: {}'.format(parts[0]))
+        return ''
+
+    def write(self, nagios_context, hostname, nagios_servicegroups=None):
+        nrpe_check_file = '/etc/nagios/nrpe.d/{}.cfg'.format(
+            self.command)
+        with open(nrpe_check_file, 'w') as nrpe_check_config:
+            nrpe_check_config.write("# check {}\n".format(self.shortname))
+            nrpe_check_config.write("command[{}]={}\n".format(
+                self.command, self.check_cmd))
+
+        if not os.path.exists(NRPE.nagios_exportdir):
+            log('Not writing service config as {} is not accessible'.format(
+                NRPE.nagios_exportdir))
+        else:
+            self.write_service_config(nagios_context, hostname,
+                                      nagios_servicegroups)
+
+    def write_service_config(self, nagios_context, hostname,
+                             nagios_servicegroups=None):
+        for f in os.listdir(NRPE.nagios_exportdir):
+            if re.search('.*{}.cfg'.format(self.command), f):
+                os.remove(os.path.join(NRPE.nagios_exportdir, f))
+
+        if not nagios_servicegroups:
+            nagios_servicegroups = nagios_context
+
+        templ_vars = {
+            'nagios_hostname': hostname,
+            'nagios_servicegroup': nagios_servicegroups,
+            'description': self.description,
+            'shortname': self.shortname,
+            'command': self.command,
+        }
+        nrpe_service_text = Check.service_template.format(**templ_vars)
+        nrpe_service_file = '{}/service__{}_{}.cfg'.format(
+            NRPE.nagios_exportdir, hostname, self.command)
+        with open(nrpe_service_file, 'w') as nrpe_service_config:
+            nrpe_service_config.write(str(nrpe_service_text))
+
+    def run(self):
+        subprocess.call(self.check_cmd)
+
+
+class NRPE(object):
+    nagios_logdir = '/var/log/nagios'
+    nagios_exportdir = '/var/lib/nagios/export'
+    nrpe_confdir = '/etc/nagios/nrpe.d'
+
+    def __init__(self, hostname=None):
+        super(NRPE, self).__init__()
+        self.config = config()
+        self.nagios_context = self.config['nagios_context']
+        if 'nagios_servicegroups' in self.config:
+            self.nagios_servicegroups = self.config['nagios_servicegroups']
+        else:
+            self.nagios_servicegroups = 'juju'
+        self.unit_name = local_unit().replace('/', '-')
+        if hostname:
+            self.hostname = hostname
+        else:
+            self.hostname = "{}-{}".format(self.nagios_context, self.unit_name)
+        self.checks = []
+
+    def add_check(self, *args, **kwargs):
+        self.checks.append(Check(*args, **kwargs))
+
+    def write(self):
+        try:
+            nagios_uid = pwd.getpwnam('nagios').pw_uid
+            nagios_gid = grp.getgrnam('nagios').gr_gid
+        except:
+            log("Nagios user not set up, nrpe checks not updated")
+            return
+
+        if not os.path.exists(NRPE.nagios_logdir):
+            os.mkdir(NRPE.nagios_logdir)
+            os.chown(NRPE.nagios_logdir, nagios_uid, nagios_gid)
+
+        nrpe_monitors = {}
+        monitors = {"monitors": {"remote": {"nrpe": nrpe_monitors}}}
+        for nrpecheck in self.checks:
+            nrpecheck.write(self.nagios_context, self.hostname,
+                            self.nagios_servicegroups)
+            nrpe_monitors[nrpecheck.shortname] = {
+                "command": nrpecheck.command,
+            }
+
+        service('restart', 'nagios-nrpe-server')
+
+        for rid in relation_ids("local-monitors"):
+            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,
+            )

hooks/charmhelpers/contrib/charmsupport/volumes.py

@@ -0,0 +1,159 @@
+'''
+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']

hooks/charmhelpers/contrib/openstack/context.py

@@ -468,9 +468,10 @@ class HAProxyContext(OSContextGenerator):
                             _unit = unit.replace('/', '-')
                             cluster_hosts[laddr]['backends'][_unit] = _laddr
 
-        # NOTE(jamespage) no split configurations found, just use
+        # NOTE(jamespage) add backend based on private address - this
-        # private addresses
+        # with either be the only backend or the fallback if no acls
-        if not cluster_hosts:
+        # match in the frontend
+        cluster_hosts[addr] = {}
         netmask = get_netmask_for_address(addr)
         cluster_hosts[addr] = {'network': "{}/{}".format(addr, netmask),
                                'backends': {l_unit: addr}}
@@ -482,7 +483,10 @@ class HAProxyContext(OSContextGenerator):
                     _unit = unit.replace('/', '-')
                     cluster_hosts[addr]['backends'][_unit] = _laddr
 
-        ctxt = {'frontends': cluster_hosts}
+        ctxt = {
+            'frontends': cluster_hosts,
+            'default_backend': addr
+        }
 
         if config('haproxy-server-timeout'):
             ctxt['haproxy_server_timeout'] = config('haproxy-server-timeout')
@@ -663,8 +667,9 @@ class ApacheSSLContext(OSContextGenerator):
         addresses = self.get_network_addresses()
         for address, endpoint in sorted(set(addresses)):
             for api_port in self.external_ports:
-                ext_port = determine_apache_port(api_port)
+                ext_port = determine_apache_port(api_port,
-                int_port = determine_api_port(api_port)
+                                                 singlenode_mode=True)
+                int_port = determine_api_port(api_port, singlenode_mode=True)
                 portmap = (address, endpoint, int(ext_port), int(int_port))
                 ctxt['endpoints'].append(portmap)
                 ctxt['ext_ports'].append(int(ext_port))

hooks/charmhelpers/contrib/openstack/templates/haproxy.cfg

@@ -44,7 +44,9 @@ frontend tcp-in_{{ service }}
     {% for frontend in frontends -%}
     acl net_{{ frontend }} dst {{ frontends[frontend]['network'] }}
     use_backend {{ service }}_{{ frontend }} if net_{{ frontend }}
-    {% endfor %}
+    {% endfor -%}
+    default_backend {{ service }}_{{ default_backend }}
+
 {% for frontend in frontends -%}
 backend {{ service }}_{{ frontend }}
     balance leastconn

hooks/charmhelpers/contrib/openstack/utils.py

@@ -53,6 +53,7 @@ UBUNTU_OPENSTACK_RELEASE = OrderedDict([
     ('saucy', 'havana'),
     ('trusty', 'icehouse'),
     ('utopic', 'juno'),
+    ('vivid', 'kilo'),
 ])
 
 
@@ -64,6 +65,7 @@ OPENSTACK_CODENAMES = OrderedDict([
     ('2013.2', 'havana'),
     ('2014.1', 'icehouse'),
     ('2014.2', 'juno'),
+    ('2015.1', 'kilo'),
 ])
 
 # The ugly duckling
@@ -84,6 +86,7 @@ SWIFT_CODENAMES = OrderedDict([
     ('2.0.0', 'juno'),
     ('2.1.0', 'juno'),
     ('2.2.0', 'juno'),
+    ('2.2.1', 'kilo'),
 ])
 
 DEFAULT_LOOPBACK_SIZE = '5G'
@@ -289,6 +292,9 @@ def configure_installation_source(rel):
             'juno': 'trusty-updates/juno',
             'juno/updates': 'trusty-updates/juno',
             'juno/proposed': 'trusty-proposed/juno',
+            'kilo': 'trusty-updates/kilo',
+            'kilo/updates': 'trusty-updates/kilo',
+            'kilo/proposed': 'trusty-proposed/kilo',
         }
 
         try:

hooks/charmhelpers/contrib/storage/linux/ceph.py

@@ -157,6 +157,17 @@ def create_keyring(service, key):
     log('Created new ceph keyring at %s.' % keyring, level=DEBUG)
 
 
+def delete_keyring(service):
+    """Delete an existing Ceph keyring."""
+    keyring = _keyring_path(service)
+    if not os.path.exists(keyring):
+        log('Keyring does not exist at %s' % keyring, level=WARNING)
+        return
+
+    os.remove(keyring)
+    log('Deleted ring at %s.' % keyring, level=INFO)
+
+
 def create_key_file(service, key):
     """Create a file containing key."""
     keyfile = _keyfile_path(service)

hooks/charmhelpers/contrib/unison/__init__.py

@@ -228,7 +228,12 @@ def collect_authed_hosts(peer_interface):
     return hosts
 
 
-def sync_path_to_host(path, host, user, verbose=False, cmd=None, gid=None):
+def sync_path_to_host(path, host, user, verbose=False, cmd=None, gid=None,
+                      fatal=False):
+    """Sync path to an specific peer host
+
+    Propagates exception if operation fails and fatal=True.
+    """
     cmd = cmd or copy(BASE_CMD)
     if not verbose:
         cmd.append('-silent')
@@ -245,20 +250,30 @@ def sync_path_to_host(path, host, user, verbose=False, cmd=None, gid=None):
         run_as_user(user, cmd, gid)
     except:
         log('Error syncing remote files')
+        if fatal:
+            raise
 
 
-def sync_to_peer(host, user, paths=None, verbose=False, cmd=None, gid=None):
+def sync_to_peer(host, user, paths=None, verbose=False, cmd=None, gid=None,
-    '''Sync paths to an specific host'''
+                 fatal=False):
+    """Sync paths to an specific peer host
+
+    Propagates exception if any operation fails and fatal=True.
+    """
     if paths:
         for p in paths:
-            sync_path_to_host(p, host, user, verbose, cmd, gid)
+            sync_path_to_host(p, host, user, verbose, cmd, gid, fatal)
 
 
-def sync_to_peers(peer_interface, user, paths=None,
+def sync_to_peers(peer_interface, user, paths=None, verbose=False, cmd=None,
-                  verbose=False, cmd=None, gid=None):
+                  gid=None, fatal=False):
-    '''Sync all hosts to an specific path'''
+    """Sync all hosts to an specific path
-    '''The type of group is integer, it allows user has permissions to '''
+
-    '''operate a directory have a different group id with the user id.'''
+    The type of group is integer, it allows user has permissions to
+    operate a directory have a different group id with the user id.
+
+    Propagates exception if any operation fails and fatal=True.
+    """
     if paths:
         for host in collect_authed_hosts(peer_interface):
-            sync_to_peer(host, user, paths, verbose, cmd, gid)
+            sync_to_peer(host, user, paths, verbose, cmd, gid, fatal)

hooks/charmhelpers/fetch/__init__.py

@@ -64,9 +64,16 @@ CLOUD_ARCHIVE_POCKETS = {
     'trusty-juno/updates': 'trusty-updates/juno',
     'trusty-updates/juno': 'trusty-updates/juno',
     'juno/proposed': 'trusty-proposed/juno',
-    'juno/proposed': 'trusty-proposed/juno',
     'trusty-juno/proposed': 'trusty-proposed/juno',
     'trusty-proposed/juno': 'trusty-proposed/juno',
+    # Kilo
+    'kilo': 'trusty-updates/kilo',
+    'trusty-kilo': 'trusty-updates/kilo',
+    'trusty-kilo/updates': 'trusty-updates/kilo',
+    'trusty-updates/kilo': 'trusty-updates/kilo',
+    'kilo/proposed': 'trusty-proposed/kilo',
+    'trusty-kilo/proposed': 'trusty-proposed/kilo',
+    'trusty-proposed/kilo': 'trusty-proposed/kilo',
 }
 
 # The order of this list is very important. Handlers should be listed in from

hooks/keystone_hooks.py

@@ -51,6 +51,7 @@ from keystone_utils import (
     register_configs,
     relation_list,
     restart_map,
+    services,
     CLUSTER_RES,
     KEYSTONE_CONF,
     SSH_USER,
@@ -79,6 +80,8 @@ from charmhelpers.contrib.network.ip import (
 )
 from charmhelpers.contrib.openstack.context import ADDRESS_TYPES
 
+from charmhelpers.contrib.charmsupport import nrpe
+
 hooks = Hooks()
 CONFIGS = register_configs()
 
@@ -111,6 +114,7 @@ def config_changed():
 
     save_script_rc()
     configure_https()
+    update_nrpe_config()
     CONFIGS.write_all()
     if eligible_leader(CLUSTER_RES):
         migrate_database()
@@ -290,7 +294,11 @@ def ha_joined():
             res_ks_vip = 'ocf:heartbeat:IPaddr2'
             vip_params = 'ip'
 
-        iface = get_iface_for_address(vip)
+        iface = (get_iface_for_address(vip) or
+                 config('vip_iface'))
+        netmask = (get_netmask_for_address(vip) or
+                   config('vip_cidr'))
+
         if iface is not None:
             vip_key = 'res_ks_{}_vip'.format(iface)
             resources[vip_key] = res_ks_vip
@@ -299,7 +307,7 @@ def ha_joined():
                 ' nic="{iface}"'.format(ip=vip_params,
                                         vip=vip,
                                         iface=iface,
-                                        netmask=get_netmask_for_address(vip))
+                                        netmask=netmask)
             )
             vip_group.append(vip_key)
 
@@ -375,6 +383,7 @@ def upgrade_charm():
                                 group='keystone',
                                 peer_interface='cluster',
                                 ensure_local_user=True)
+    update_nrpe_config()
     synchronize_ca()
     if eligible_leader(CLUSTER_RES):
         log('Cluster leader - ensuring endpoint configuration'
@@ -389,6 +398,18 @@ def upgrade_charm():
     CONFIGS.write_all()
 
 
+@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, services(), current_unit)
+    nrpe_setup.write()
+
+
 def main():
     try:
         hooks.execute(sys.argv)

hooks/keystone_utils.py

@@ -231,6 +231,14 @@ def restart_map():
                         if v['services']])
 
 
+def services():
+    ''' Returns a list of services associate with this charm '''
+    _services = []
+    for v in restart_map().values():
+        _services = _services + v
+    return list(set(_services))
+
+
 def determine_ports():
     '''Assemble a list of API ports for services we are managing'''
     ports = [config('admin-port'), config('service-port')]

hooks/nrpe-external-master-relation-changed

@@ -0,0 +1 @@
+keystone_hooks.py

hooks/nrpe-external-master-relation-joined

@@ -0,0 +1 @@
+keystone_hooks.py

metadata.yaml

@@ -7,6 +7,9 @@ description: |
  implements OpenStack’s Identity API.
 categories: ["misc"]
 provides:
+  nrpe-external-master:
+    interface: nrpe-external-master
+    scope: container
   identity-service:
     interface: keystone
   identity-notifications:

unit_tests/test_keystone_contexts.py

@@ -82,6 +82,7 @@ class TestKeystoneContexts(CharmTestCase):
              'stat_port': ':8888',
              'service_ports': {'admin-port': ['keystone', '34'],
                                'public-port': ['keystone', '34']},
+             'default_backend': '1.2.3.4',
              'frontends': {'1.2.3.4': {
                  'network': '1.2.3.4/255.255.255.0',
                  'backends': {

unit_tests/test_keystone_hooks.py

@@ -56,6 +56,7 @@ TO_PATCH = [
     'ensure_initial_admin',
     'add_service_to_keystone',
     'synchronize_ca',
+    'update_nrpe_config',
     # other
     'check_call',
     'execd_preinstall',
@@ -384,6 +385,31 @@ class KeystoneRelationTests(CharmTestCase):
         }
         self.relation_set.assert_called_with(**args)
 
+    def test_ha_joined_no_bound_ip(self):
+        self.get_hacluster_config.return_value = {
+            'vip': '10.10.10.10',
+            'ha-bindiface': 'em0',
+            'ha-mcastport': '8080'
+        }
+        self.test_config.set('vip_iface', 'eth120')
+        self.test_config.set('vip_cidr', '21')
+        self.get_iface_for_address.return_value = None
+        self.get_netmask_for_address.return_value = None
+        hooks.ha_joined()
+        args = {
+            'corosync_bindiface': 'em0',
+            'corosync_mcastport': '8080',
+            'init_services': {'res_ks_haproxy': 'haproxy'},
+            'resources': {'res_ks_eth120_vip': 'ocf:heartbeat:IPaddr2',
+                          'res_ks_haproxy': 'lsb:haproxy'},
+            'resource_params': {
+                'res_ks_eth120_vip': 'params ip="10.10.10.10"'
+                                     ' cidr_netmask="21" nic="eth120"',
+                'res_ks_haproxy': 'op monitor interval="5s"'},
+            'clones': {'cl_ks_haproxy': 'res_ks_haproxy'}
+        }
+        self.relation_set.assert_called_with(**args)
+
     def test_ha_joined_with_ipv6(self):
         self.test_config.set('prefer-ipv6', True)
         self.get_hacluster_config.return_value = {