Provide LOCAL_IP_WRAPPED as a instack env variable

This can be then be used in places that require a IP
address to be wrapped in square brackets if it is IPv6.

Related-Bug: #1725318
Change-Id: Idb437dee5ddec0a015c68847b9514f7bbb3f70a1
(cherry picked from commit 24694e5fd0)

instack_undercloud/undercloud.py

@@ -42,6 +42,7 @@ import novaclient as nc
 from novaclient import client as novaclient
 from novaclient import exceptions
 from oslo_config import cfg
+from oslo_utils import netutils
 import psutil
 import pystache
 import six
@@ -670,6 +671,14 @@ def _check_ipv6_enabled():
     return os.path.isfile('/proc/net/if_inet6')
 
 
+def _wrap_ipv6(ip):
+    """Wrap a IP address in square brackets if IPv6
+    """
+    if netutils.is_valid_ipv6(ip):
+        return "[%s]" % ip
+    return ip
+
+
 def _check_sysctl():
     """Check sysctl option availability
 
@@ -1048,7 +1057,8 @@ class InstackEnvironment(dict):
                     'TRIPLEO_INSTALL_USER', 'TRIPLEO_UNDERCLOUD_CONF_FILE',
                     'TRIPLEO_UNDERCLOUD_PASSWORD_FILE',
                     'ENABLED_POWER_INTERFACES',
-                    'ENABLED_MANAGEMENT_INTERFACES', 'SYSCTL_SETTINGS'}
+                    'ENABLED_MANAGEMENT_INTERFACES', 'SYSCTL_SETTINGS',
+                    'LOCAL_IP_WRAPPED'}
     """The variables we calculate in _generate_environment call."""
 
     PUPPET_KEYS = DYNAMIC_KEYS | {opt.name.upper() for _, group in list_opts()
@@ -1195,6 +1205,7 @@ def _generate_environment(instack_root):
 
     instack_env['PUBLIC_INTERFACE_IP'] = instack_env['LOCAL_IP']
     instack_env['LOCAL_IP'] = instack_env['LOCAL_IP'].split('/')[0]
+    instack_env['LOCAL_IP_WRAPPED'] = _wrap_ipv6(instack_env['LOCAL_IP'])
     if instack_env['UNDERCLOUD_SERVICE_CERTIFICATE']:
         instack_env['UNDERCLOUD_SERVICE_CERTIFICATE'] = os.path.abspath(
             instack_env['UNDERCLOUD_SERVICE_CERTIFICATE'])

requirements.txt

@@ -8,6 +8,7 @@ python-novaclient>=9.0.0 # Apache-2.0
 python-mistralclient>=3.1.0 # Apache-2.0
 python-swiftclient>=3.2.0 # Apache-2.0
 oslo.config!=4.3.0,!=4.4.0,>=4.0.0 # Apache-2.0
+oslo.utils>=3.20.0                       # Apache-2.0
 psutil>=3.2.2 # BSD
 netaddr!=0.7.16,>=0.7.13 # BSD
 netifaces>=0.10.4 # MIT

templates/config.json.template

@@ -9,6 +9,7 @@
    "puppet-stack-config"
   ]},
   "local-ip": "{{LOCAL_IP}}",
+  "local-ip-wrapped": "{{LOCAL_IP_WRAPPED}}",
   "masquerade_networks": ["{{MASQUERADE_NETWORK}}"],
   "service_certificate": "{{UNDERCLOUD_SERVICE_CERTIFICATE}}",
   "public_host": "{{UNDERCLOUD_PUBLIC_HOST}}",