stevestrutt
commented
4 years ago Yes the statefile format has changed for TF0.12. Earlier this week I rewrote it for TF0.12.23 and Gen2 VSIs. This should also work for Gen1 VSIs.
The script assumes that it is executed from the same folder as ansible, which also contains the statefile. It can be invoked from ansible adding -i terraform_hosts.py
ansible-inventory --graph -i terraform_hosts.py
#!/usr/bin/env python
# Terraform-Ansible dynamic inventory for IBM Cloud
# Copyright (c) 2020, IBM UK
# steve_strutt@uk.ibm.com
ti_version = '0.1'
#
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# http://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# Can be used alongside static inventory files in the same directory
#
# This inventory script expects to find Terraform tags of the form
# group: ans_group associated with each tf instance to define the
# host group membership for Ansible. Multiple group tags are allowed per host
#
# terraform_inv.ini file in the same directory as this script, points to the
# location of the terraform.tfstate file to be inventoried
# [TFSTATE]
# TFSTATE_FILE = /usr/share/terraform/ibm/Demoapp2x/terraform.tfstate
#
# Validate correct execution:
# With ini file './terraform.py'
# Successful execution returns groups with lists of hosts and _meta/hostvars with a detailed
# host listing.
# Validate successful operation with ansible:
# With - 'ansible-inventory -i inventory --list'
import json
import configparser
import os
from os import getenv
from collections import defaultdict
from argparse import ArgumentParser
def parse_params():
parser = ArgumentParser('IBM Cloud Terraform inventory')
parser.add_argument('--list', action='store_true', default=True, help='List Terraform hosts')
parser.add_argument('--tfstate', '-t', action='store', dest='tfstate', help='Terraform state file in current or specified directory (terraform.tfstate default)')
parser.add_argument('--version', '-v', action='store_true', help='Show version')
args = parser.parse_args()
# read location of terrafrom state file from ini if it exists
if not args.tfstate:
args.tfstate = "terraform.tfstate"
return args
def get_tfstate(filename):
return json.load(open(filename))
class TerraformInventory:
def __init__(self):
self.args = parse_params()
if self.args.version:
print(ti_version)
elif self.args.list:
print(self.list_all())
def list_all(self):
hosts_vars = {}
attributes = {}
groups = {}
inv_output = {}
group_hosts = defaultdict(list)
hosts = self.get_tf_instances()
if hosts is not None:
for host in hosts:
hosts_vars[host[0]] = host[1]
groups = host[2]
if groups is not None:
for group in groups:
group_hosts[group].append(host[0])
for group in group_hosts:
inv_output[group] = {'hosts': group_hosts[group]}
inv_output["_meta"] = {'hostvars': hosts_vars}
return json.dumps(inv_output, indent=2)
#return json.dumps({'all': {'hosts': hosts}, '_meta': {'hostvars': hosts_vars}}, indent=2)
def get_tf_instances(self):
tfstate = get_tfstate(self.args.tfstate)
for resource in tfstate['resources']:
if (resource['type'] == 'ibm_is_instance') & (resource['mode'] == 'managed'):
for instance in resource['instances']:
tf_attrib = instance['attributes']
name = tf_attrib['name']
group = []
attributes = {
'id': tf_attrib['id'],
'image': tf_attrib['image'],
#'metadata': tf_attrib['user_data'],
'region': tf_attrib['zone'],
'ram': tf_attrib['memory'],
'cpu': tf_attrib['vcpu'][0]['count'],
'ssh_keys': tf_attrib['keys'],
'private_ipv4': tf_attrib['primary_network_interface'][0]['primary_ipv4_address'],
'ansible_host': tf_attrib['primary_network_interface'][0]['primary_ipv4_address'],
'ansible_ssh_user': 'root',
'provider': 'provider.ibm',
'tags': tf_attrib['tags'],
}
#tag of form ans_group: xxxxxxx is used to define ansible host group
for value in list(attributes["tags"]):
try:
curprefix, rest = value.split(":", 1)
except ValueError:
continue
if curprefix != "ans_group" :
continue
group.append(rest)
yield name, attributes, group
else:
continue
if __name__ == '__main__':
TerraformInventory()
js-max
hkantare
Hi there,
As stated here Terraform-Ansible dynamic inventory for IBM Cloud
It's planned to update mentioned script to support TF v0.12+?