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Ansible setup to provide testing servers, closes #3

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This commit is contained in:
sveneh 2015-01-27 12:21:36 +01:00
parent cd0d7ef899
commit 52b83a4451
13 changed files with 1024 additions and 1 deletions
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4
.gitignore vendored
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*/**/.DS_Store
node_modules
npm-debug.log
ansible/venv
*~
*.swp
*.pem

9
ansible/ec2-setup.yml Normal file
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---
- name: Provision EC2 instances
hosts: local
gather_facts: false
roles:
- ec2
tasks:
- include: roles/ec2/tasks/setup.yml

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ansible/ec2-terminate.yml Normal file
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---
- name: Terminate all ec2 instances
hosts: security_group_eth-netstat
remote_user: ubuntu
gather_facts: false
roles:
- ec2
tasks:
- include: roles/ec2/tasks/terminate.yml

95
ansible/ec2.ini Normal file
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# Ansible EC2 external inventory script settings
#
[ec2]
# to talk to a private eucalyptus instance uncomment these lines
# and edit edit eucalyptus_host to be the host name of your cloud controller
#eucalyptus = True
#eucalyptus_host = clc.cloud.domain.org
# AWS regions to make calls to. Set this to 'all' to make request to all regions
# in AWS and merge the results together. Alternatively, set this to a comma
# separated list of regions. E.g. 'us-east-1,us-west-1,us-west-2'
regions = us-east-1
regions_exclude = us-gov-west-1,cn-north-1
# When generating inventory, Ansible needs to know how to address a server.
# Each EC2 instance has a lot of variables associated with it. Here is the list:
# http://docs.pythonboto.org/en/latest/ref/ec2.html#module-boto.ec2.instance
# Below are 2 variables that are used as the address of a server:
# - destination_variable
# - vpc_destination_variable
# This is the normal destination variable to use. If you are running Ansible
# from outside EC2, then 'public_dns_name' makes the most sense. If you are
# running Ansible from within EC2, then perhaps you want to use the internal
# address, and should set this to 'private_dns_name'.
destination_variable = public_dns_name
# For server inside a VPC, using DNS names may not make sense. When an instance
# has 'subnet_id' set, this variable is used. If the subnet is public, setting
# this to 'ip_address' will return the public IP address. For instances in a
# private subnet, this should be set to 'private_ip_address', and Ansible must
# be run from with EC2.
vpc_destination_variable = ip_address
# To tag instances on EC2 with the resource records that point to them from
# Route53, uncomment and set 'route53' to True.
route53 = False
# To exclude RDS instances from the inventory, uncomment and set to False.
#rds = False
# Additionally, you can specify the list of zones to exclude looking up in
# 'route53_excluded_zones' as a comma-separated list.
# route53_excluded_zones = samplezone1.com, samplezone2.com
# By default, only EC2 instances in the 'running' state are returned. Set
# 'all_instances' to True to return all instances regardless of state.
all_instances = False
# By default, only RDS instances in the 'available' state are returned. Set
# 'all_rds_instances' to True return all RDS instances regardless of state.
all_rds_instances = False
# API calls to EC2 are slow. For this reason, we cache the results of an API
# call. Set this to the path you want cache files to be written to. Two files
# will be written to this directory:
# - ansible-ec2.cache
# - ansible-ec2.index
cache_path = ~/.ansible/tmp
# The number of seconds a cache file is considered valid. After this many
# seconds, a new API call will be made, and the cache file will be updated.
# To disable the cache, set this value to 0
cache_max_age = 300
# Organize groups into a nested/hierarchy instead of a flat namespace.
nested_groups = False
# If you only want to include hosts that match a certain regular expression
# pattern_include = stage-*
# If you want to exclude any hosts that match a certain regular expression
# pattern_exclude = stage-*
# Instance filters can be used to control which instances are retrieved for
# inventory. For the full list of possible filters, please read the EC2 API
# docs: http://docs.aws.amazon.com/AWSEC2/latest/APIReference/ApiReference-query-DescribeInstances.html#query-DescribeInstances-filters
# Filters are key/value pairs separated by '=', to list multiple filters use
# a list separated by commas. See examples below.
# Retrieve only instances with (key=value) env=stage tag
# instance_filters = tag:env=stage
# Retrieve only instances with role=webservers OR role=dbservers tag
# instance_filters = tag:role=webservers,tag:role=dbservers
# Retrieve only t1.micro instances OR instances with tag env=stage
# instance_filters = instance-type=t1.micro,tag:env=stage
# You can use wildcards in filter values also. Below will list instances which
# tag Name value matches webservers1*
# (ex. webservers15, webservers1a, webservers123 etc)
# instance_filters = tag:Name=webservers1*

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ansible/ec2.py Executable file
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#!/usr/bin/env python
'''
EC2 external inventory script
=================================
Generates inventory that Ansible can understand by making API request to
AWS EC2 using the Boto library.
NOTE: This script assumes Ansible is being executed where the environment
variables needed for Boto have already been set:
export AWS_ACCESS_KEY_ID='AK123'
export AWS_SECRET_ACCESS_KEY='abc123'
This script also assumes there is an ec2.ini file alongside it. To specify a
different path to ec2.ini, define the EC2_INI_PATH environment variable:
export EC2_INI_PATH=/path/to/my_ec2.ini
If you're using eucalyptus you need to set the above variables and
you need to define:
export EC2_URL=http://hostname_of_your_cc:port/services/Eucalyptus
For more details, see: http://docs.pythonboto.org/en/latest/boto_config_tut.html
When run against a specific host, this script returns the following variables:
- ec2_ami_launch_index
- ec2_architecture
- ec2_association
- ec2_attachTime
- ec2_attachment
- ec2_attachmentId
- ec2_client_token
- ec2_deleteOnTermination
- ec2_description
- ec2_deviceIndex
- ec2_dns_name
- ec2_eventsSet
- ec2_group_name
- ec2_hypervisor
- ec2_id
- ec2_image_id
- ec2_instanceState
- ec2_instance_type
- ec2_ipOwnerId
- ec2_ip_address
- ec2_item
- ec2_kernel
- ec2_key_name
- ec2_launch_time
- ec2_monitored
- ec2_monitoring
- ec2_networkInterfaceId
- ec2_ownerId
- ec2_persistent
- ec2_placement
- ec2_platform
- ec2_previous_state
- ec2_private_dns_name
- ec2_private_ip_address
- ec2_publicIp
- ec2_public_dns_name
- ec2_ramdisk
- ec2_reason
- ec2_region
- ec2_requester_id
- ec2_root_device_name
- ec2_root_device_type
- ec2_security_group_ids
- ec2_security_group_names
- ec2_shutdown_state
- ec2_sourceDestCheck
- ec2_spot_instance_request_id
- ec2_state
- ec2_state_code
- ec2_state_reason
- ec2_status
- ec2_subnet_id
- ec2_tenancy
- ec2_virtualization_type
- ec2_vpc_id
These variables are pulled out of a boto.ec2.instance object. There is a lack of
consistency with variable spellings (camelCase and underscores) since this
just loops through all variables the object exposes. It is preferred to use the
ones with underscores when multiple exist.
In addition, if an instance has AWS Tags associated with it, each tag is a new
variable named:
- ec2_tag_[Key] = [Value]
Security groups are comma-separated in 'ec2_security_group_ids' and
'ec2_security_group_names'.
'''
# (c) 2012, Peter Sankauskas
#
# This file is part of Ansible,
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
######################################################################
import sys
import os
import argparse
import re
from time import time
import boto
from boto import ec2
from boto import rds
from boto import route53
import ConfigParser
from collections import defaultdict
try:
import json
except ImportError:
import simplejson as json
class Ec2Inventory(object):
def _empty_inventory(self):
return {"_meta" : {"hostvars" : {}}}
def __init__(self):
''' Main execution path '''
# Inventory grouped by instance IDs, tags, security groups, regions,
# and availability zones
self.inventory = self._empty_inventory()
# Index of hostname (address) to instance ID
self.index = {}
# Read settings and parse CLI arguments
self.read_settings()
self.parse_cli_args()
# Cache
if self.args.refresh_cache:
self.do_api_calls_update_cache()
elif not self.is_cache_valid():
self.do_api_calls_update_cache()
# Data to print
if self.args.host:
data_to_print = self.get_host_info()
elif self.args.list:
# Display list of instances for inventory
if self.inventory == self._empty_inventory():
data_to_print = self.get_inventory_from_cache()
else:
data_to_print = self.json_format_dict(self.inventory, True)
print data_to_print
def is_cache_valid(self):
''' Determines if the cache files have expired, or if it is still valid '''
if os.path.isfile(self.cache_path_cache):
mod_time = os.path.getmtime(self.cache_path_cache)
current_time = time()
if (mod_time + self.cache_max_age) > current_time:
if os.path.isfile(self.cache_path_index):
return True
return False
def read_settings(self):
''' Reads the settings from the ec2.ini file '''
config = ConfigParser.SafeConfigParser()
ec2_default_ini_path = os.path.join(os.path.dirname(os.path.realpath(__file__)), 'ec2.ini')
ec2_ini_path = os.environ.get('EC2_INI_PATH', ec2_default_ini_path)
config.read(ec2_ini_path)
# is eucalyptus?
self.eucalyptus_host = None
self.eucalyptus = False
if config.has_option('ec2', 'eucalyptus'):
self.eucalyptus = config.getboolean('ec2', 'eucalyptus')
if self.eucalyptus and config.has_option('ec2', 'eucalyptus_host'):
self.eucalyptus_host = config.get('ec2', 'eucalyptus_host')
# Regions
self.regions = []
configRegions = config.get('ec2', 'regions')
configRegions_exclude = config.get('ec2', 'regions_exclude')
if (configRegions == 'all'):
if self.eucalyptus_host:
self.regions.append(boto.connect_euca(host=self.eucalyptus_host).region.name)
else:
for regionInfo in ec2.regions():
if regionInfo.name not in configRegions_exclude:
self.regions.append(regionInfo.name)
else:
self.regions = configRegions.split(",")
# Destination addresses
self.destination_variable = config.get('ec2', 'destination_variable')
self.vpc_destination_variable = config.get('ec2', 'vpc_destination_variable')
# Route53
self.route53_enabled = config.getboolean('ec2', 'route53')
self.route53_excluded_zones = []
if config.has_option('ec2', 'route53_excluded_zones'):
self.route53_excluded_zones.extend(
config.get('ec2', 'route53_excluded_zones', '').split(','))
# Include RDS instances?
self.rds_enabled = True
if config.has_option('ec2', 'rds'):
self.rds_enabled = config.getboolean('ec2', 'rds')
# Return all EC2 and RDS instances (if RDS is enabled)
if config.has_option('ec2', 'all_instances'):
self.all_instances = config.getboolean('ec2', 'all_instances')
else:
self.all_instances = False
if config.has_option('ec2', 'all_rds_instances') and self.rds_enabled:
self.all_rds_instances = config.getboolean('ec2', 'all_rds_instances')
else:
self.all_rds_instances = False
# Cache related
cache_dir = os.path.expanduser(config.get('ec2', 'cache_path'))
if not os.path.exists(cache_dir):
os.makedirs(cache_dir)
self.cache_path_cache = cache_dir + "/ansible-ec2.cache"
self.cache_path_index = cache_dir + "/ansible-ec2.index"
self.cache_max_age = config.getint('ec2', 'cache_max_age')
# Configure nested groups instead of flat namespace.
if config.has_option('ec2', 'nested_groups'):
self.nested_groups = config.getboolean('ec2', 'nested_groups')
else:
self.nested_groups = False
# Do we need to just include hosts that match a pattern?
try:
pattern_include = config.get('ec2', 'pattern_include')
if pattern_include and len(pattern_include) > 0:
self.pattern_include = re.compile(pattern_include)
else:
self.pattern_include = None
except ConfigParser.NoOptionError, e:
self.pattern_include = None
# Do we need to exclude hosts that match a pattern?
try:
pattern_exclude = config.get('ec2', 'pattern_exclude');
if pattern_exclude and len(pattern_exclude) > 0:
self.pattern_exclude = re.compile(pattern_exclude)
else:
self.pattern_exclude = None
except ConfigParser.NoOptionError, e:
self.pattern_exclude = None
# Instance filters (see boto and EC2 API docs)
self.ec2_instance_filters = defaultdict(list)
if config.has_option('ec2', 'instance_filters'):
for x in config.get('ec2', 'instance_filters', '').split(','):
filter_key, filter_value = x.split('=')
self.ec2_instance_filters[filter_key].append(filter_value)
def parse_cli_args(self):
''' Command line argument processing '''
parser = argparse.ArgumentParser(description='Produce an Ansible Inventory file based on EC2')
parser.add_argument('--list', action='store_true', default=True,
help='List instances (default: True)')
parser.add_argument('--host', action='store',
help='Get all the variables about a specific instance')
parser.add_argument('--refresh-cache', action='store_true', default=False,
help='Force refresh of cache by making API requests to EC2 (default: False - use cache files)')
self.args = parser.parse_args()
def do_api_calls_update_cache(self):
''' Do API calls to each region, and save data in cache files '''
if self.route53_enabled:
self.get_route53_records()
for region in self.regions:
self.get_instances_by_region(region)
if self.rds_enabled:
self.get_rds_instances_by_region(region)
self.write_to_cache(self.inventory, self.cache_path_cache)
self.write_to_cache(self.index, self.cache_path_index)
def get_instances_by_region(self, region):
''' Makes an AWS EC2 API call to the list of instances in a particular
region '''
try:
if self.eucalyptus:
conn = boto.connect_euca(host=self.eucalyptus_host)
conn.APIVersion = '2010-08-31'
else:
conn = ec2.connect_to_region(region)
# connect_to_region will fail "silently" by returning None if the region name is wrong or not supported
if conn is None:
print("region name: %s likely not supported, or AWS is down. connection to region failed." % region)
sys.exit(1)
reservations = []
if self.ec2_instance_filters:
for filter_key, filter_values in self.ec2_instance_filters.iteritems():
reservations.extend(conn.get_all_instances(filters = { filter_key : filter_values }))
else:
reservations = conn.get_all_instances()
for reservation in reservations:
for instance in reservation.instances:
self.add_instance(instance, region)
except boto.exception.BotoServerError, e:
if not self.eucalyptus:
print "Looks like AWS is down again:"
print e
sys.exit(1)
def get_rds_instances_by_region(self, region):
''' Makes an AWS API call to the list of RDS instances in a particular
region '''
try:
conn = rds.connect_to_region(region)
if conn:
instances = conn.get_all_dbinstances()
for instance in instances:
self.add_rds_instance(instance, region)
except boto.exception.BotoServerError, e:
if not e.reason == "Forbidden":
print "Looks like AWS RDS is down: "
print e
sys.exit(1)
def get_instance(self, region, instance_id):
''' Gets details about a specific instance '''
if self.eucalyptus:
conn = boto.connect_euca(self.eucalyptus_host)
conn.APIVersion = '2010-08-31'
else:
conn = ec2.connect_to_region(region)
# connect_to_region will fail "silently" by returning None if the region name is wrong or not supported
if conn is None:
print("region name: %s likely not supported, or AWS is down. connection to region failed." % region)
sys.exit(1)
reservations = conn.get_all_instances([instance_id])
for reservation in reservations:
for instance in reservation.instances:
return instance
def add_instance(self, instance, region):
''' Adds an instance to the inventory and index, as long as it is
addressable '''
# Only want running instances unless all_instances is True
if not self.all_instances and instance.state != 'running':
return
# Select the best destination address
if instance.subnet_id:
dest = getattr(instance, self.vpc_destination_variable)
else:
dest = getattr(instance, self.destination_variable)
if not dest:
# Skip instances we cannot address (e.g. private VPC subnet)
return
# if we only want to include hosts that match a pattern, skip those that don't
if self.pattern_include and not self.pattern_include.match(dest):
return
# if we need to exclude hosts that match a pattern, skip those
if self.pattern_exclude and self.pattern_exclude.match(dest):
return
# Add to index
self.index[dest] = [region, instance.id]
# Inventory: Group by instance ID (always a group of 1)
self.inventory[instance.id] = [dest]
if self.nested_groups:
self.push_group(self.inventory, 'instances', instance.id)
# Inventory: Group by region
if self.nested_groups:
self.push_group(self.inventory, 'regions', region)
else:
self.push(self.inventory, region, dest)
# Inventory: Group by availability zone
self.push(self.inventory, instance.placement, dest)
if self.nested_groups:
self.push_group(self.inventory, region, instance.placement)
# Inventory: Group by instance type
type_name = self.to_safe('type_' + instance.instance_type)
self.push(self.inventory, type_name, dest)
if self.nested_groups:
self.push_group(self.inventory, 'types', type_name)
# Inventory: Group by key pair
if instance.key_name:
key_name = self.to_safe('key_' + instance.key_name)
self.push(self.inventory, key_name, dest)
if self.nested_groups:
self.push_group(self.inventory, 'keys', key_name)
# Inventory: Group by VPC
if instance.vpc_id:
self.push(self.inventory, self.to_safe('vpc_id_' + instance.vpc_id), dest)
# Inventory: Group by security group
try:
for group in instance.groups:
key = self.to_safe("security_group_" + group.name)
self.push(self.inventory, key, dest)
if self.nested_groups:
self.push_group(self.inventory, 'security_groups', key)
except AttributeError:
print 'Package boto seems a bit older.'
print 'Please upgrade boto >= 2.3.0.'
sys.exit(1)
# Inventory: Group by tag keys
for k, v in instance.tags.iteritems():
key = self.to_safe("tag_" + k + "=" + v)
self.push(self.inventory, key, dest)
if self.nested_groups:
self.push_group(self.inventory, 'tags', self.to_safe("tag_" + k))
self.push_group(self.inventory, self.to_safe("tag_" + k), key)
# Inventory: Group by Route53 domain names if enabled
if self.route53_enabled:
route53_names = self.get_instance_route53_names(instance)
for name in route53_names:
self.push(self.inventory, name, dest)
if self.nested_groups:
self.push_group(self.inventory, 'route53', name)
# Global Tag: instances without tags
if len(instance.tags) == 0:
self.push(self.inventory, 'tag_none', dest)
# Global Tag: tag all EC2 instances
self.push(self.inventory, 'ec2', dest)
self.inventory["_meta"]["hostvars"][dest] = self.get_host_info_dict_from_instance(instance)
def add_rds_instance(self, instance, region):
''' Adds an RDS instance to the inventory and index, as long as it is
addressable '''
# Only want available instances unless all_rds_instances is True
if not self.all_rds_instances and instance.status != 'available':
return
# Select the best destination address
#if instance.subnet_id:
#dest = getattr(instance, self.vpc_destination_variable)
#else:
#dest = getattr(instance, self.destination_variable)
dest = instance.endpoint[0]
if not dest:
# Skip instances we cannot address (e.g. private VPC subnet)
return
# Add to index
self.index[dest] = [region, instance.id]
# Inventory: Group by instance ID (always a group of 1)
self.inventory[instance.id] = [dest]
if self.nested_groups:
self.push_group(self.inventory, 'instances', instance.id)
# Inventory: Group by region
if self.nested_groups:
self.push_group(self.inventory, 'regions', region)
else:
self.push(self.inventory, region, dest)
# Inventory: Group by availability zone
self.push(self.inventory, instance.availability_zone, dest)
if self.nested_groups:
self.push_group(self.inventory, region, instance.availability_zone)
# Inventory: Group by instance type
type_name = self.to_safe('type_' + instance.instance_class)
self.push(self.inventory, type_name, dest)
if self.nested_groups:
self.push_group(self.inventory, 'types', type_name)
# Inventory: Group by security group
try:
if instance.security_group:
key = self.to_safe("security_group_" + instance.security_group.name)
self.push(self.inventory, key, dest)
if self.nested_groups:
self.push_group(self.inventory, 'security_groups', key)
except AttributeError:
print 'Package boto seems a bit older.'
print 'Please upgrade boto >= 2.3.0.'
sys.exit(1)
# Inventory: Group by engine
self.push(self.inventory, self.to_safe("rds_" + instance.engine), dest)
if self.nested_groups:
self.push_group(self.inventory, 'rds_engines', self.to_safe("rds_" + instance.engine))
# Inventory: Group by parameter group
self.push(self.inventory, self.to_safe("rds_parameter_group_" + instance.parameter_group.name), dest)
if self.nested_groups:
self.push_group(self.inventory, 'rds_parameter_groups', self.to_safe("rds_parameter_group_" + instance.parameter_group.name))
# Global Tag: all RDS instances
self.push(self.inventory, 'rds', dest)
self.inventory["_meta"]["hostvars"][dest] = self.get_host_info_dict_from_instance(instance)
def get_route53_records(self):
''' Get and store the map of resource records to domain names that
point to them. '''
r53_conn = route53.Route53Connection()
all_zones = r53_conn.get_zones()
route53_zones = [ zone for zone in all_zones if zone.name[:-1]
not in self.route53_excluded_zones ]
self.route53_records = {}
for zone in route53_zones:
rrsets = r53_conn.get_all_rrsets(zone.id)
for record_set in rrsets:
record_name = record_set.name
if record_name.endswith('.'):
record_name = record_name[:-1]
for resource in record_set.resource_records:
self.route53_records.setdefault(resource, set())
self.route53_records[resource].add(record_name)
def get_instance_route53_names(self, instance):
''' Check if an instance is referenced in the records we have from
Route53. If it is, return the list of domain names pointing to said
instance. If nothing points to it, return an empty list. '''
instance_attributes = [ 'public_dns_name', 'private_dns_name',
'ip_address', 'private_ip_address' ]
name_list = set()
for attrib in instance_attributes:
try:
value = getattr(instance, attrib)
except AttributeError:
continue
if value in self.route53_records:
name_list.update(self.route53_records[value])
return list(name_list)
def get_host_info_dict_from_instance(self, instance):
instance_vars = {}
for key in vars(instance):
value = getattr(instance, key)
key = self.to_safe('ec2_' + key)
# Handle complex types
# state/previous_state changed to properties in boto in https://github.com/boto/boto/commit/a23c379837f698212252720d2af8dec0325c9518
if key == 'ec2__state':
instance_vars['ec2_state'] = instance.state or ''
instance_vars['ec2_state_code'] = instance.state_code
elif key == 'ec2__previous_state':
instance_vars['ec2_previous_state'] = instance.previous_state or ''
instance_vars['ec2_previous_state_code'] = instance.previous_state_code
elif type(value) in [int, bool]:
instance_vars[key] = value
elif type(value) in [str, unicode]:
instance_vars[key] = value.strip()
elif type(value) == type(None):
instance_vars[key] = ''
elif key == 'ec2_region':
instance_vars[key] = value.name
elif key == 'ec2__placement':
instance_vars['ec2_placement'] = value.zone
elif key == 'ec2_tags':
for k, v in value.iteritems():
key = self.to_safe('ec2_tag_' + k)
instance_vars[key] = v
elif key == 'ec2_groups':
group_ids = []
group_names = []
for group in value:
group_ids.append(group.id)
group_names.append(group.name)
instance_vars["ec2_security_group_ids"] = ','.join([str(i) for i in group_ids])
instance_vars["ec2_security_group_names"] = ','.join([str(i) for i in group_names])
else:
pass
# TODO Product codes if someone finds them useful
#print key
#print type(value)
#print value
return instance_vars
def get_host_info(self):
''' Get variables about a specific host '''
if len(self.index) == 0:
# Need to load index from cache
self.load_index_from_cache()
if not self.args.host in self.index:
# try updating the cache
self.do_api_calls_update_cache()
if not self.args.host in self.index:
# host might not exist anymore
return self.json_format_dict({}, True)
(region, instance_id) = self.index[self.args.host]
instance = self.get_instance(region, instance_id)
return self.json_format_dict(self.get_host_info_dict_from_instance(instance), True)
def push(self, my_dict, key, element):
''' Push an element onto an array that may not have been defined in
the dict '''
group_info = my_dict.setdefault(key, [])
if isinstance(group_info, dict):
host_list = group_info.setdefault('hosts', [])
host_list.append(element)
else:
group_info.append(element)
def push_group(self, my_dict, key, element):
''' Push a group as a child of another group. '''
parent_group = my_dict.setdefault(key, {})
if not isinstance(parent_group, dict):
parent_group = my_dict[key] = {'hosts': parent_group}
child_groups = parent_group.setdefault('children', [])
if element not in child_groups:
child_groups.append(element)
def get_inventory_from_cache(self):
''' Reads the inventory from the cache file and returns it as a JSON
object '''
cache = open(self.cache_path_cache, 'r')
json_inventory = cache.read()
return json_inventory
def load_index_from_cache(self):
''' Reads the index from the cache file sets self.index '''
cache = open(self.cache_path_index, 'r')
json_index = cache.read()
self.index = json.loads(json_index)
def write_to_cache(self, data, filename):
''' Writes data in JSON format to a file '''
json_data = self.json_format_dict(data, True)
cache = open(filename, 'w')
cache.write(json_data)
cache.close()
def to_safe(self, word):
''' Converts 'bad' characters in a string to underscores so they can be
used as Ansible groups '''
return re.sub("[^A-Za-z0-9\-]", "_", word)
def json_format_dict(self, data, pretty=False):
''' Converts a dict to a JSON object and dumps it as a formatted
string '''
if pretty:
return json.dumps(data, sort_keys=True, indent=2)
else:
return json.dumps(data)
# Run the script
Ec2Inventory()

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---
- name: Install eth nodes w/ json-rpc for query-testing
hosts: tag_Role_query_test_node
remote_user: ubuntu
roles:
- docker
- client

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FROM ubuntu:14.04
ENV DEBIAN_FRONTEND noninteractive
RUN apt-get update
RUN apt-get upgrade -y
# Ethereum dependencies
RUN apt-get install -qy build-essential g++-4.8 git cmake libboost-all-dev libcurl4-openssl-dev wget
RUN apt-get install -qy automake unzip libgmp-dev libtool libleveldb-dev yasm libminiupnpc-dev libreadline-dev scons
RUN apt-get install -qy libjsoncpp-dev libargtable2-dev
# NCurses based GUI (not optional though for a succesful compilation, see https://github.com/ethereum/cpp-ethereum/issues/452 )
RUN apt-get install -qy libncurses5-dev
# Qt-based GUI
# RUN apt-get install -qy qtbase5-dev qt5-default qtdeclarative5-dev libqt5webkit5-dev
# Ethereum PPA
RUN apt-get install -qy software-properties-common
RUN add-apt-repository ppa:ethereum/ethereum
RUN apt-get update
RUN apt-get install -qy libcryptopp-dev libjson-rpc-cpp-dev
# Build Ethereum (HEADLESS)
RUN git clone --depth=1 --branch master https://github.com/ethereum/cpp-ethereum
RUN mkdir -p cpp-ethereum/build
RUN cd cpp-ethereum/build && cmake .. -DCMAKE_BUILD_TYPE=Release -DHEADLESS=1 && make -j $(cat /proc/cpuinfo | grep processor | wc -l) && make install
RUN ldconfig
ENTRYPOINT ["/usr/local/bin/eth"]

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---
- name: copy Dockerfile to server
copy: src=docker-cpp dest=/home/{{ ansible_ssh_user }}
- name: build C++ client
sudo: true
docker_image:
path: /home/{{ ansible_ssh_user }}/docker-cpp
name: cpp
state: build
async: 1200
poll: 5
- name: start ethereum client w/ JSON-RPC and bootstrapping
sudo: true
docker:
image: cpp
expose: ["8080", "30303"]
ports: ["8080:8080", "30303:30303"]
# parameters given to client
command: --bootstrap --json-rpc

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---
- name: restart sshd
sudo: true
service: name=ssh state=restarted
- name: restart server
sudo: true
command: shutdown -r now
async: 0
poll: 0
ignore_errors: true
notify: wait for server restart
- name: wait for server restart
local_action: wait_for host={{ inventory_hostname }} port=22
state=started
sudo: false

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---
- name: update package list
sudo: true
apt: update_cache=true
- name: install docker dependencies
sudo: true
apt: name={{ item }} install_recommends=false
with_items:
# Docker has serious problems on EC2: http://www.danstutzman.com/2014/07/speed-up-docker-on-ec2
# and https://github.com/docker/docker/issues/4036
- linux-generic
- python-pip
notify: restart server
# make sure resteart is done now, not at end of play
- meta: flush_handlers
- name: install docker
sudo: true
# install script from https://docs.docker.com/installation/ubuntulinux/
# TODO this is not idempotent
shell: curl -sSL https://get.docker.com/ubuntu/ | sudo sh
- name: install docker python API
sudo: true
pip: name=docker-py
- name: enable docker for standard user
sudo: true
user: name={{ ansible_ssh_user }} groups=docker append=yes
notify: restart sshd

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---
- name: create default security group
ec2_group:
name: "{{ security_group }}"
region: "{{ region }}"
description: "{{ project_description }}"
rules:
# ssh
- proto: tcp
from_port: 22
to_port: 22
cidr_ip: "{{ ip_access_range }}"
# ethereum incoming connection port
- proto: tcp
from_port: 30303
to_port: 30303
cidr_ip: "{{ ip_access_range }}"
# ethereum JSON-RPC server
- proto: tcp
from_port: 8080
to_port: 8080
cidr_ip: "{{ ip_access_range }}"
rules_egress:
- proto: all
cidr_ip: "{{ ip_access_range }}"
- name: start ec2 instances
ec2:
group: "{{ security_group }}"
instance_type: "{{ instance_type }}"
image: "{{ image }}"
wait: true
region: "{{ region }}"
key_name: "{{ keypair }}"
instance_tags:
Name: "{{ item }}"
Role: query_test_node
count_tag: # exactly one instace with the given name
Name: "{{ item }}"
exact_count: 1
with_sequence: start=1 end={{ total_no_instances }} format=test-%02x

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---
- name: Terminate ec2 instances
local_action: ec2
state=absent
instance_ids={{ ec2_id }}
region={{ region }}
wait=true

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---
# default config for ec2 instances
# cpp-compilation needs RAM
instance_type: t2.medium
security_group: eth-netstat
# image: ami-d6e7c084
image: ami-9eaa1cf6
# region: ap-southeast-1
region: us-east-1
keypair: eth-netstat
# limit access to AWS to these clients in CDIR notation
ip_access_range: 0.0.0.0/0
project_description: https://github.com/cubedro/eth-netstats
total_no_instances: 3