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Add support for reading from a config file
This commit is contained in:
Matt Martz
parent
2bd927fd81
commit
1e92aadb5a
2 changed files with 151 additions and 37 deletions
55
plugins/inventory/rax.ini
Normal file
55
plugins/inventory/rax.ini
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@ -0,0 +1,55 @@
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# Ansible Rackspace external inventory script settings
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#
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[rax]
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# Environment Variable: RAX_CREDS_FILE
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#
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# An optional configuration that points to a pyrax-compatible credentials
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# file.
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#
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# If not supplied, rax.py will look for a credentials file
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# at ~/.rackspace_cloud_credentials. It uses the Rackspace Python SDK,
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# and therefore requires a file formatted per the SDK's specifications.
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#
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# https://github.com/rackspace/pyrax/blob/master/docs/getting_started.md
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# creds_file = ~/.rackspace_cloud_credentials
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# Environment Variable: RAX_REGION
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#
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# An optional environment variable to narrow inventory search
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# scope. If used, needs a value like ORD, DFW, SYD (a Rackspace
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# datacenter) and optionally accepts a comma-separated list.
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# regions = IAD,ORD,DFW
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# Environment Variable: RAX_ENV
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#
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# A configuration that will use an environment as configured in
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# ~/.pyrax.cfg, see
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# https://github.com/rackspace/pyrax/blob/master/docs/getting_started.md
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# env = prod
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# Environment Variable: RAX_META_PREFIX
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# Default: meta
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#
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# A configuration that changes the prefix used for meta key/value groups.
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# For compatibility with ec2.py set to "tag"
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# meta_prefix = meta
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# Environment Variable: RAX_ACCESS_NETWORK
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# Default: public
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#
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# A configuration that will tell the inventory script to use a specific
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# server network to determine the ansible_ssh_host value. If no address
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# is found, ansible_ssh_host will not be set.
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# access_network = public
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# Environment Variable: RAX_ACCESS_IP_VERSION
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# Default: 4
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#
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# A configuration related to "access_network" that will attempt to
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# determine the ansible_ssh_host value for either IPv4 or IPv6. If no
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# address is found, ansible_ssh_host will not be set.
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# Acceptable values are: 4 or 6. Values other than 4 or 6
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# will be ignored, and 4 will be used.
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# access_ip_version = 4
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@ -56,36 +56,74 @@ Description:
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rax_tenant_id
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rax_loaded
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Notes:
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RAX_CREDS_FILE is an optional environment variable that points to a
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pyrax-compatible credentials file.
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Configuration:
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rax.py can be configured using a rax.ini file or via environment
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variables. The rax.ini file should live in the same directory along side
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this script.
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The section header for configuration values related to this
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inventory plugin is [rax]
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[rax]
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creds_file = ~/.rackspace_cloud_credentials
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regions = IAD,ORD,DFW
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env = prod
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meta_prefix = meta
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access_network = public
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access_ip_version = 4
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Each of these configurations also has a corresponding environment variable.
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An environment variable will override a configuration file value.
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creds_file:
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Environment Variable: RAX_CREDS_FILE
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An optional configuration that points to a pyrax-compatible credentials
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file.
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If not supplied, rax.py will look for a credentials file
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at ~/.rackspace_cloud_credentials. It uses the Rackspace Python SDK,
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and therefore requires a file formatted per the SDK's specifications.
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If RAX_CREDS_FILE is not supplied, rax.py will look for a credentials file
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at ~/.rackspace_cloud_credentials. It uses the Rackspace Python SDK, and
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therefore requires a file formatted per the SDK's specifications. See
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https://github.com/rackspace/pyrax/blob/master/docs/getting_started.md
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#authenticating
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RAX_REGION is an optional environment variable to narrow inventory search
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scope. RAX_REGION, if used, needs a value like ORD, DFW, SYD (a Rackspace
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regions:
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Environment Variable: RAX_REGION
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An optional environment variable to narrow inventory search
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scope. If used, needs a value like ORD, DFW, SYD (a Rackspace
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datacenter) and optionally accepts a comma-separated list.
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RAX_ENV is an environment variable that will use an environment as
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configured in ~/.pyrax.cfg, see
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environment:
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Environment Variable: RAX_ENV
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A configuration that will use an environment as configured in
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~/.pyrax.cfg, see
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https://github.com/rackspace/pyrax/blob/master/docs/getting_started.md
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RAX_META_PREFIX is an environment variable that changes the prefix used
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for meta key/value groups. For compatibility with ec2.py set to
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RAX_META_PREFIX=tag
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meta_prefix:
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Environment Variable: RAX_META_PREFIX
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Default: meta
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RAX_ACCESS_NETWORK is an environment variable that will tell the inventory
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script to use a specific server network to determine the ansible_ssh_host
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value. If no address is found, ansible_ssh_host will not be set.
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A configuration that changes the prefix used for meta key/value groups.
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For compatibility with ec2.py set to "tag"
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RAX_ACCESS_IP_VERSION is an environment variable related to
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RAX_ACCESS_NETWORK that will attempt to determine the ansible_ssh_host
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value for either IPv4 or IPv6. If no address is found, ansible_ssh_host
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will not be set. Acceptable values are: 4 or 6. Values other than 4 or 6
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access_network:
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Environment Variable: RAX_ACCESS_NETWORK
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Default: public
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A configuration that will tell the inventory script to use a specific
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server network to determine the ansible_ssh_host value. If no address
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is found, ansible_ssh_host will not be set.
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access_ip_version:
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Environment Variable: RAX_ACCESS_IP_VERSION
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Default: 4
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A configuration related to "access_network" that will attempt to
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determine the ansible_ssh_host value for either IPv4 or IPv6. If no
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address is found, ansible_ssh_host will not be set.
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Acceptable values are: 4 or 6. Values other than 4 or 6
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will be ignored, and 4 will be used.
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Examples:
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@ -102,7 +140,7 @@ Examples:
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$ RAX_CREDS_FILE=~/.raxpub rax.py --host server.example.com
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Use the instance private IP to connect (instead of public IP)
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$ RAX_CREDS_FILE=~/.raxpub RAX_PRIVATE_IP=yes rax.py --list
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$ RAX_CREDS_FILE=~/.raxpub RAX_ACCESS_NETWORK=private rax.py --list
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"""
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import os
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@ -111,8 +149,9 @@ import sys
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import argparse
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import warnings
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import collections
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import ConfigParser
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from types import NoneType
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from ansible.constants import get_config, mk_boolean
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try:
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import json
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@ -125,7 +164,20 @@ except ImportError:
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print('pyrax is required for this module')
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sys.exit(1)
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NON_CALLABLES = (basestring, bool, dict, int, list, NoneType)
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NON_CALLABLES = (basestring, bool, dict, int, list, type(None))
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def load_config_file():
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p = ConfigParser.ConfigParser()
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config_file = os.path.join(os.path.dirname(os.path.realpath(__file__)),
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'rax.ini')
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try:
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p.read(config_file)
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except ConfigParser.Error:
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return None
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else:
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return p
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p = load_config_file()
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def rax_slugify(value):
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@ -163,10 +215,13 @@ def _list(regions):
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groups = collections.defaultdict(list)
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hostvars = collections.defaultdict(dict)
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images = {}
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prefix = get_config(p, 'rax', 'meta_prefix', 'RAX_META_PREFIX', 'meta')
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network = os.getenv('RAX_ACCESS_NETWORK', 'public')
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network = get_config(p, 'rax', 'access_network', 'RAX_ACCESS_NETWORK',
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'public')
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try:
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ip_version = int(os.getenv('RAX_ACCESS_IP_VERSION', 4))
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ip_version = get_config(p, 'rax', 'access_ip_version',
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'RAX_ACCESS_IP_VERSION', 4, integer=True)
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except:
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ip_version = 4
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else:
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@ -177,7 +232,7 @@ def _list(regions):
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for region in regions:
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# Connect to the region
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cs = pyrax.connect_to_cloudservers(region=region)
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if isinstance(cs, NoneType):
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if cs is None:
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warnings.warn(
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'Connecting to Rackspace region "%s" has caused Pyrax to '
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'return a NoneType. Is this a valid region?' % region,
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@ -257,16 +312,18 @@ def parse_args():
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def setup():
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default_creds_file = os.path.expanduser('~/.rackspace_cloud_credentials')
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env = os.getenv('RAX_ENV', None)
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env = get_config(p, 'rax', 'environment', 'RAX_ENV', None)
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if env:
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pyrax.set_environment(env)
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keyring_username = pyrax.get_setting('keyring_username')
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# Attempt to grab credentials from environment first
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try:
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creds_file = os.path.expanduser(os.environ['RAX_CREDS_FILE'])
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except KeyError, e:
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creds_file = get_config(p, 'rax', 'creds_file',
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'RAX_CREDS_FILE', None)
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if creds_file is not None:
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creds_file = os.path.expanduser(creds_file)
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else:
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# But if that fails, use the default location of
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# ~/.rackspace_cloud_credentials
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if os.path.isfile(default_creds_file):
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@ -274,7 +331,7 @@ def setup():
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elif not keyring_username:
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sys.stderr.write('No value in environment variable %s and/or no '
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'credentials file at %s\n'
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% (e.message, default_creds_file))
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% ('RAX_CREDS_FILE', default_creds_file))
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sys.exit(1)
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identity_type = pyrax.get_setting('identity_type')
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@ -295,7 +352,9 @@ def setup():
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if region:
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regions.append(region)
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else:
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for region in os.getenv('RAX_REGION', 'all').split(','):
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region_list = get_config(p, 'rax', 'regions', 'RAX_REGION', 'all',
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islist=True)
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for region in region_list:
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region = region.strip().upper()
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if region == 'ALL':
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regions = pyrax.regions
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