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Remotenet start/status/stop added to Makefile to create a DO validator network

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Greg Szabo 2018-05-23 12:38:01 -04:00 committed by Christopher Goes
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Makefile
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@ -126,7 +126,31 @@ devdoc_update:
docker pull tendermint/devdoc
########################################
### Remote validator nodes using terraform and ansible
# Build linux binary
build-linux:
GOOS=linux GOARCH=amd64 $(MAKE) build
TESTNET_NAME?=remotenet
SERVERS?=4
BINARY=$(CURDIR)/build/gaiad
remotenet-start:
@if [ -z "$(DO_API_TOKEN)" ]; then echo "DO_API_TOKEN environment variable not set." ; false ; fi
@if ! [ -f $(HOME)/.ssh/id_rsa.pub ]; then ssh-keygen ; fi
cd networks/remote/terraform && terraform init && terraform apply -var DO_API_TOKEN="$(DO_API_TOKEN)" -var SSH_PUBLIC_FILE="$(HOME)/.ssh/id_rsa.pub" -var SSH_PRIVATE_FILE="$(HOME)/.ssh/id_rsa" -var TESTNET_NAME="$(TESTNET_NAME)" -var SERVERS="$(SERVERS)"
cd networks/remote/ansible && ANSIBLE_HOST_KEY_CHECKING=False ansible-playbook -i inventory/digital_ocean.py -l "$(TESTNET_NAME)" -e BINARY=$(BINARY) -e TESTNET_NAME="$(TESTNET_NAME)" setup-validators.yml
cd networks/remote/ansible && ansible-playbook -i inventory/digital_ocean.py -l "$(TESTNET_NAME)" start.yml
remotenet-stop:
@if [ -z "$(DO_API_TOKEN)" ]; then echo "DO_API_TOKEN environment variable not set." ; false ; fi
cd networks/remote/terraform && terraform destroy -var DO_API_TOKEN="$(DO_API_TOKEN)" -var SSH_PUBLIC_FILE="$(HOME)/.ssh/id_rsa.pub" -var SSH_PRIVATE_FILE="$(HOME)/.ssh/id_rsa"
remotenet-status:
cd networks/remote/ansible && ansible-playbook -i inventory/digital_ocean.py -l "$(TESTNET_NAME)" status.yml
# To avoid unintended conflicts with file names, always add to .PHONY
# unless there is a reason not to.
# https://www.gnu.org/software/make/manual/html_node/Phony-Targets.html
.PHONY: build build_examples install install_examples dist check_tools get_tools get_vendor_deps draw_deps test test_cli test_unit test_cover test_lint benchmark devdoc_init devdoc devdoc_save devdoc_update
.PHONY: build build_examples install install_examples dist check_tools get_tools get_vendor_deps draw_deps test test_cli test_unit test_cover test_lint benchmark devdoc_init devdoc devdoc_save devdoc_update remotenet-start remotenet-stop remotenet-status

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networks/remote/README.rst Normal file
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Terraform & Ansible
===================
Automated deployments are done using `Terraform <https://www.terraform.io/>`__ to create servers on Digital Ocean then
`Ansible <http://www.ansible.com/>`__ to create and manage testnets on those servers.
Prerequisites
-------------
- Install `Terraform <https://www.terraform.io/downloads.html>`__ and `Ansible <http://docs.ansible.com/ansible/latest/installation_guide/intro_installation.html>`__ on a Linux machine.
- Create a `DigitalOcean API token <https://cloud.digitalocean.com/settings/api/tokens>`__ with read and write capability.
- Install the python dopy package (``pip install dopy``) (This is necessary for the digitalocean.py script for ansible.)
- Create SSH keys
::
export DO_API_TOKEN="abcdef01234567890abcdef01234567890"
export TESTNET_NAME="remotenet"
export SSH_PRIVATE_FILE="$HOME/.ssh/id_rsa"
export SSH_PUBLIC_FILE="$HOME/.ssh/id_rsa.pub"
These will be used by both ``terraform`` and ``ansible``.
Create a remote network
-----------------------
::
make remotenet-start
Optionally, you can set the number of servers you want to launch and the name of the testnet (which defaults to remotenet):
::
TESTNET_NAME="mytestnet" SERVERS=7 make remotenet-start
Quickly see the /status endpoint
--------------------------------
::
make remotenet-status
Delete servers
--------------
::
make remotenet-stop

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networks/remote/ansible/.gitignore vendored Normal file
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*.retry
files/*

4
networks/remote/ansible/ansible.cfg Normal file
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@ -0,0 +1,4 @@
[defaults]
retry_files_enabled = False
host_key_checking = False

9
networks/remote/ansible/clear-config.yml Normal file
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---
- hosts: all
user: root
any_errors_fatal: true
gather_facts: no
roles:
- clear-config

675
networks/remote/ansible/inventory/COPYING Normal file
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@ -0,0 +1,675 @@
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but the special requirements of the GNU Affero General Public License,
section 13, concerning interaction through a network will apply to the
combination as such.
14. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions of
the GNU General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the
Program specifies that a certain numbered version of the GNU General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation. If the Program does not specify a version number of the
GNU General Public License, you may choose any version ever published
by the Free Software Foundation.
If the Program specifies that a proxy can decide which future
versions of the GNU General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.
Later license versions may give you additional or different
permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program 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.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

34
networks/remote/ansible/inventory/digital_ocean.ini Normal file
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# Ansible DigitalOcean external inventory script settings
#
[digital_ocean]
# The module needs your DigitalOcean API Token.
# It may also be specified on the command line via --api-token
# or via the environment variables DO_API_TOKEN or DO_API_KEY
#
#api_token = 123456abcdefg
# API calls to DigitalOcean may be 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.
# One file will be written to this directory:
# - ansible-digital_ocean.cache
#
cache_path = /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.
#
cache_max_age = 300
# Use the private network IP address instead of the public when available.
#
use_private_network = False
# Pass variables to every group, e.g.:
#
# group_variables = { 'ansible_user': 'root' }
#
group_variables = {}

471
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#!/usr/bin/env python
'''
DigitalOcean external inventory script
======================================
Generates Ansible inventory of DigitalOcean Droplets.
In addition to the --list and --host options used by Ansible, there are options
for generating JSON of other DigitalOcean data. This is useful when creating
droplets. For example, --regions will return all the DigitalOcean Regions.
This information can also be easily found in the cache file, whose default
location is /tmp/ansible-digital_ocean.cache).
The --pretty (-p) option pretty-prints the output for better human readability.
----
Although the cache stores all the information received from DigitalOcean,
the cache is not used for current droplet information (in --list, --host,
--all, and --droplets). This is so that accurate droplet information is always
found. You can force this script to use the cache with --force-cache.
----
Configuration is read from `digital_ocean.ini`, then from environment variables,
then and command-line arguments.
Most notably, the DigitalOcean API Token must be specified. It can be specified
in the INI file or with the following environment variables:
export DO_API_TOKEN='abc123' or
export DO_API_KEY='abc123'
Alternatively, it can be passed on the command-line with --api-token.
If you specify DigitalOcean credentials in the INI file, a handy way to
get them into your environment (e.g., to use the digital_ocean module)
is to use the output of the --env option with export:
export $(digital_ocean.py --env)
----
The following groups are generated from --list:
- ID (droplet ID)
- NAME (droplet NAME)
- image_ID
- image_NAME
- distro_NAME (distribution NAME from image)
- region_NAME
- size_NAME
- status_STATUS
For each host, the following variables are registered:
- do_backup_ids
- do_created_at
- do_disk
- do_features - list
- do_id
- do_image - object
- do_ip_address
- do_private_ip_address
- do_kernel - object
- do_locked
- do_memory
- do_name
- do_networks - object
- do_next_backup_window
- do_region - object
- do_size - object
- do_size_slug
- do_snapshot_ids - list
- do_status
- do_tags
- do_vcpus
- do_volume_ids
-----
```
usage: digital_ocean.py [-h] [--list] [--host HOST] [--all]
[--droplets] [--regions] [--images] [--sizes]
[--ssh-keys] [--domains] [--pretty]
[--cache-path CACHE_PATH]
[--cache-max_age CACHE_MAX_AGE]
[--force-cache]
[--refresh-cache]
[--api-token API_TOKEN]
Produce an Ansible Inventory file based on DigitalOcean credentials
optional arguments:
-h, --help show this help message and exit
--list List all active Droplets as Ansible inventory
(default: True)
--host HOST Get all Ansible inventory variables about a specific
Droplet
--all List all DigitalOcean information as JSON
--droplets List Droplets as JSON
--regions List Regions as JSON
--images List Images as JSON
--sizes List Sizes as JSON
--ssh-keys List SSH keys as JSON
--domains List Domains as JSON
--pretty, -p Pretty-print results
--cache-path CACHE_PATH
Path to the cache files (default: .)
--cache-max_age CACHE_MAX_AGE
Maximum age of the cached items (default: 0)
--force-cache Only use data from the cache
--refresh-cache Force refresh of cache by making API requests to
DigitalOcean (default: False - use cache files)
--api-token API_TOKEN, -a API_TOKEN
DigitalOcean API Token
```
'''
# (c) 2013, Evan Wies <evan@neomantra.net>
#
# Inspired by the EC2 inventory plugin:
# https://github.com/ansible/ansible/blob/devel/contrib/inventory/ec2.py
#
# 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 os
import sys
import re
import argparse
from time import time
import ConfigParser
import ast
try:
import json
except ImportError:
import simplejson as json
try:
from dopy.manager import DoManager
except ImportError as e:
sys.exit("failed=True msg='`dopy` library required for this script'")
class DigitalOceanInventory(object):
###########################################################################
# Main execution path
###########################################################################
def __init__(self):
''' Main execution path '''
# DigitalOceanInventory data
self.data = {} # All DigitalOcean data
self.inventory = {} # Ansible Inventory
# Define defaults
self.cache_path = '.'
self.cache_max_age = 0
self.use_private_network = False
self.group_variables = {}
# Read settings, environment variables, and CLI arguments
self.read_settings()
self.read_environment()
self.read_cli_args()
# Verify credentials were set
if not hasattr(self, 'api_token'):
sys.stderr.write('''Could not find values for DigitalOcean api_token.
They must be specified via either ini file, command line argument (--api-token),
or environment variables (DO_API_TOKEN)\n''')
sys.exit(-1)
# env command, show DigitalOcean credentials
if self.args.env:
print("DO_API_TOKEN=%s" % self.api_token)
sys.exit(0)
# Manage cache
self.cache_filename = self.cache_path + "/ansible-digital_ocean.cache"
self.cache_refreshed = False
if self.is_cache_valid():
self.load_from_cache()
if len(self.data) == 0:
if self.args.force_cache:
sys.stderr.write('''Cache is empty and --force-cache was specified\n''')
sys.exit(-1)
self.manager = DoManager(None, self.api_token, api_version=2)
# Pick the json_data to print based on the CLI command
if self.args.droplets:
self.load_from_digital_ocean('droplets')
json_data = {'droplets': self.data['droplets']}
elif self.args.regions:
self.load_from_digital_ocean('regions')
json_data = {'regions': self.data['regions']}
elif self.args.images:
self.load_from_digital_ocean('images')
json_data = {'images': self.data['images']}
elif self.args.sizes:
self.load_from_digital_ocean('sizes')
json_data = {'sizes': self.data['sizes']}
elif self.args.ssh_keys:
self.load_from_digital_ocean('ssh_keys')
json_data = {'ssh_keys': self.data['ssh_keys']}
elif self.args.domains:
self.load_from_digital_ocean('domains')
json_data = {'domains': self.data['domains']}
elif self.args.all:
self.load_from_digital_ocean()
json_data = self.data
elif self.args.host:
json_data = self.load_droplet_variables_for_host()
else: # '--list' this is last to make it default
self.load_from_digital_ocean('droplets')
self.build_inventory()
json_data = self.inventory
if self.cache_refreshed:
self.write_to_cache()
if self.args.pretty:
print(json.dumps(json_data, sort_keys=True, indent=2))
else:
print(json.dumps(json_data))
# That's all she wrote...
###########################################################################
# Script configuration
###########################################################################
def read_settings(self):
''' Reads the settings from the digital_ocean.ini file '''
config = ConfigParser.SafeConfigParser()
config.read(os.path.dirname(os.path.realpath(__file__)) + '/digital_ocean.ini')
# Credentials
if config.has_option('digital_ocean', 'api_token'):
self.api_token = config.get('digital_ocean', 'api_token')
# Cache related
if config.has_option('digital_ocean', 'cache_path'):
self.cache_path = config.get('digital_ocean', 'cache_path')
if config.has_option('digital_ocean', 'cache_max_age'):
self.cache_max_age = config.getint('digital_ocean', 'cache_max_age')
# Private IP Address
if config.has_option('digital_ocean', 'use_private_network'):
self.use_private_network = config.getboolean('digital_ocean', 'use_private_network')
# Group variables
if config.has_option('digital_ocean', 'group_variables'):
self.group_variables = ast.literal_eval(config.get('digital_ocean', 'group_variables'))
def read_environment(self):
''' Reads the settings from environment variables '''
# Setup credentials
if os.getenv("DO_API_TOKEN"):
self.api_token = os.getenv("DO_API_TOKEN")
if os.getenv("DO_API_KEY"):
self.api_token = os.getenv("DO_API_KEY")
def read_cli_args(self):
''' Command line argument processing '''
parser = argparse.ArgumentParser(description='Produce an Ansible Inventory file based on DigitalOcean credentials')
parser.add_argument('--list', action='store_true', help='List all active Droplets as Ansible inventory (default: True)')
parser.add_argument('--host', action='store', help='Get all Ansible inventory variables about a specific Droplet')
parser.add_argument('--all', action='store_true', help='List all DigitalOcean information as JSON')
parser.add_argument('--droplets', '-d', action='store_true', help='List Droplets as JSON')
parser.add_argument('--regions', action='store_true', help='List Regions as JSON')
parser.add_argument('--images', action='store_true', help='List Images as JSON')
parser.add_argument('--sizes', action='store_true', help='List Sizes as JSON')
parser.add_argument('--ssh-keys', action='store_true', help='List SSH keys as JSON')
parser.add_argument('--domains', action='store_true', help='List Domains as JSON')
parser.add_argument('--pretty', '-p', action='store_true', help='Pretty-print results')
parser.add_argument('--cache-path', action='store', help='Path to the cache files (default: .)')
parser.add_argument('--cache-max_age', action='store', help='Maximum age of the cached items (default: 0)')
parser.add_argument('--force-cache', action='store_true', default=False, help='Only use data from the cache')
parser.add_argument('--refresh-cache', '-r', action='store_true', default=False,
help='Force refresh of cache by making API requests to DigitalOcean (default: False - use cache files)')
parser.add_argument('--env', '-e', action='store_true', help='Display DO_API_TOKEN')
parser.add_argument('--api-token', '-a', action='store', help='DigitalOcean API Token')
self.args = parser.parse_args()
if self.args.api_token:
self.api_token = self.args.api_token
# Make --list default if none of the other commands are specified
if (not self.args.droplets and not self.args.regions and
not self.args.images and not self.args.sizes and
not self.args.ssh_keys and not self.args.domains and
not self.args.all and not self.args.host):
self.args.list = True
###########################################################################
# Data Management
###########################################################################
def load_from_digital_ocean(self, resource=None):
'''Get JSON from DigitalOcean API'''
if self.args.force_cache and os.path.isfile(self.cache_filename):
return
# We always get fresh droplets
if self.is_cache_valid() and not (resource == 'droplets' or resource is None):
return
if self.args.refresh_cache:
resource = None
if resource == 'droplets' or resource is None:
self.data['droplets'] = self.manager.all_active_droplets()
self.cache_refreshed = True
if resource == 'regions' or resource is None:
self.data['regions'] = self.manager.all_regions()
self.cache_refreshed = True
if resource == 'images' or resource is None:
self.data['images'] = self.manager.all_images(filter=None)
self.cache_refreshed = True
if resource == 'sizes' or resource is None:
self.data['sizes'] = self.manager.sizes()
self.cache_refreshed = True
if resource == 'ssh_keys' or resource is None:
self.data['ssh_keys'] = self.manager.all_ssh_keys()
self.cache_refreshed = True
if resource == 'domains' or resource is None:
self.data['domains'] = self.manager.all_domains()
self.cache_refreshed = True
def build_inventory(self):
'''Build Ansible inventory of droplets'''
self.inventory = {
'all': {
'hosts': [],
'vars': self.group_variables
},
'_meta': {'hostvars': {}}
}
# add all droplets by id and name
for droplet in self.data['droplets']:
# when using private_networking, the API reports the private one in "ip_address".
if 'private_networking' in droplet['features'] and not self.use_private_network:
for net in droplet['networks']['v4']:
if net['type'] == 'public':
dest = net['ip_address']
else:
continue
else:
dest = droplet['ip_address']
self.inventory['all']['hosts'].append(dest)
self.inventory[droplet['id']] = [dest]
self.inventory[droplet['name']] = [dest]
# groups that are always present
for group in ('region_' + droplet['region']['slug'],
'image_' + str(droplet['image']['id']),
'size_' + droplet['size']['slug'],
'distro_' + self.to_safe(droplet['image']['distribution']),
'status_' + droplet['status']):
if group not in self.inventory:
self.inventory[group] = {'hosts': [], 'vars': {}}
self.inventory[group]['hosts'].append(dest)
# groups that are not always present
for group in (droplet['image']['slug'],
droplet['image']['name']):
if group:
image = 'image_' + self.to_safe(group)
if image not in self.inventory:
self.inventory[image] = {'hosts': [], 'vars': {}}
self.inventory[image]['hosts'].append(dest)
if droplet['tags']:
for tag in droplet['tags']:
if tag not in self.inventory:
self.inventory[tag] = {'hosts': [], 'vars': {}}
self.inventory[tag]['hosts'].append(dest)
# hostvars
info = self.do_namespace(droplet)
self.inventory['_meta']['hostvars'][dest] = info
def load_droplet_variables_for_host(self):
'''Generate a JSON response to a --host call'''
host = int(self.args.host)
droplet = self.manager.show_droplet(host)
info = self.do_namespace(droplet)
return {'droplet': info}
###########################################################################
# Cache Management
###########################################################################
def is_cache_valid(self):
''' Determines if the cache files have expired, or if it is still valid '''
if os.path.isfile(self.cache_filename):
mod_time = os.path.getmtime(self.cache_filename)
current_time = time()
if (mod_time + self.cache_max_age) > current_time:
return True
return False
def load_from_cache(self):
''' Reads the data from the cache file and assigns it to member variables as Python Objects'''
try:
cache = open(self.cache_filename, 'r')
json_data = cache.read()
cache.close()
data = json.loads(json_data)
except IOError:
data = {'data': {}, 'inventory': {}}
self.data = data['data']
self.inventory = data['inventory']
def write_to_cache(self):
''' Writes data in JSON format to a file '''
data = {'data': self.data, 'inventory': self.inventory}
json_data = json.dumps(data, sort_keys=True, indent=2)
cache = open(self.cache_filename, 'w')
cache.write(json_data)
cache.close()
###########################################################################
# Utilities
###########################################################################
def push(self, my_dict, key, element):
''' Pushed an element onto an array that may not have been defined in the dict '''
if key in my_dict:
my_dict[key].append(element)
else:
my_dict[key] = [element]
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 do_namespace(self, data):
''' Returns a copy of the dictionary with all the keys put in a 'do_' namespace '''
info = {}
for k, v in data.items():
info['do_' + k] = v
return info
###########################################################################
# Run the script
DigitalOceanInventory()

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---
- name: Stop service
service: name=gaiad state=stopped
- name: Delete files
file: "path={{item}} state=absent"
with_items:
- /usr/bin/gaiad
- /home/gaiad/.gaiad
- /home/gaiad/.gaiacli

4
networks/remote/ansible/roles/setup-validators/defaults/main.yml Normal file
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---
TESTNET_NAME: remotenet

50
networks/remote/ansible/roles/setup-validators/tasks/main.yml Normal file
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---
- name: Copy binary
copy:
src: "{{BINARY}}"
dest: /usr/bin
mode: 0755
- name: Get node ID
command: "cat /etc/gaiad-nodeid"
changed_when: false
register: nodeid
- name: Create initial transaction
command: "/usr/bin/gaiad init gen-tx --name=node{{nodeid.stdout_lines[0]}}"
become: yes
become_user: gaiad
args:
creates: /home/gaiad/.gaiad/config/gentx
- name: Find gentx file
command: "ls /home/gaiad/.gaiad/config/gentx"
changed_when: false
register: gentxfile
- name: Clear local gen-tx list
file: path=files/ state=absent
connection: local
run_once: yes
- name: Get gen-tx
fetch:
dest: files/
src: "/home/gaiad/.gaiad/config/gentx/{{gentxfile.stdout_lines[0]}}"
flat: yes
- name: Copy generated transactions to all nodes
copy:
src: files/
dest: /home/gaiad/.gaiad/config/gentx/
become: yes
become_user: gaiad
- name: Generate genesis.json
command: "/usr/bin/gaiad init --gen-txs --name=node{{nodeid.stdout_lines[0]}} --chain-id={{TESTNET_NAME}}"
become: yes
become_user: gaiad
args:
creates: /home/gaiad/.gaiad/config/genesis.json

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---
- name: start service
service: "name={{service}} state=started"

5
networks/remote/ansible/roles/stop/tasks/main.yml Normal file
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@ -0,0 +1,5 @@
---
- name: stop service
service: "name={{service}} state=stopped"

9
networks/remote/ansible/setup-validators.yml Normal file
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@ -0,0 +1,9 @@
---
- hosts: all
user: root
any_errors_fatal: true
gather_facts: no
roles:
- setup-validators

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---
- hosts: all
user: root
any_errors_fatal: true
gather_facts: no
vars:
- service: gaiad
roles:
- start

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---
- hosts: all
connection: local
any_errors_fatal: true
gather_facts: no
tasks:
- name: Gather status
uri:
body_format: json
url: "http://{{inventory_hostname}}:46657/status"
register: status
- name: Print status
debug: var=status.json.result

11
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@ -0,0 +1,11 @@
---
- hosts: all
user: root
any_errors_fatal: true
gather_facts: no
vars:
- service: gaiad
roles:
- stop

4
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.terraform
terraform.tfstate
terraform.tfstate.backup
terraform.tfstate.d

53
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Using Terraform
===============
This is a `Terraform <https://www.terraform.io/>`__ configuration that sets up DigitalOcean droplets.
Prerequisites
-------------
- Install `HashiCorp Terraform <https://www.terraform.io>`__ on a linux machine.
- Create a `DigitalOcean API token <https://cloud.digitalocean.com/settings/api/tokens>`__ with read and write capability.
- Create SSH keys
Build
-----
::
export DO_API_TOKEN="abcdef01234567890abcdef01234567890"
export TESTNET_NAME="remotenet"
export SSH_PUBLIC_FILE="$HOME/.ssh/id_rsa.pub"
export SSH_PRIVATE_FILE="$HOME/.ssh/id_rsa"
terraform init
terraform apply -var DO_API_TOKEN="$DO_API_TOKEN" -var SSH_PUBLIC_FILE="$SSH_PUBLIC_FILE" -var SSH_PRIVATE_FILE="$SSH_PRIVATE_FILE"
At the end you will get a list of IP addresses that belongs to your new droplets.
Destroy
-------
Run the below:
::
terraform destroy -var DO_API_TOKEN="$DO_API_TOKEN" -var SSH_PUBLIC_FILE="$SSH_PUBLIC_FILE" -var SSH_PRIVATE_FILE="$SSH_PRIVATE_FILE"
Good to know
------------
The DigitalOcean API was not very reliable for me. If you find that terraform fails to install a specific server (for example cluster[2]), check
the regions variable and remove data center names that you find unreliable. The variable is at cluster/variables.tf
Example:
::
variable "regions" {
description = "Regions to launch in"
type = "list"
default = ["TOR1", "LON1"]
}

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resource "digitalocean_tag" "cluster" {
name = "${var.name}"
}
resource "digitalocean_ssh_key" "cluster" {
name = "${var.name}"
public_key = "${file(var.ssh_public_file)}"
}
resource "digitalocean_droplet" "cluster" {
name = "${var.name}-node${count.index}"
image = "centos-7-x64"
size = "${var.instance_size}"
region = "${element(var.regions, count.index)}"
ssh_keys = ["${digitalocean_ssh_key.cluster.id}"]
count = "${var.servers}"
tags = ["${digitalocean_tag.cluster.id}"]
lifecycle = {
prevent_destroy = false
}
connection {
private_key = "${file(var.ssh_private_file)}"
timeout = "30s"
}
provisioner "file" {
source = "files/terraform.sh"
destination = "/tmp/terraform.sh"
}
provisioner "file" {
source = "files/gaiad.service"
destination = "/etc/systemd/system/gaiad.service"
}
provisioner "remote-exec" {
inline = [
"chmod +x /tmp/terraform.sh",
"/tmp/terraform.sh ${var.name} ${count.index}",
]
}
}

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// The cluster name
output "name" {
value = "${var.name}"
}
// The list of cluster instance IDs
output "instances" {
value = ["${digitalocean_droplet.cluster.*.id}"]
}
// The list of cluster instance public IPs
output "public_ips" {
value = ["${digitalocean_droplet.cluster.*.ipv4_address}"]
}

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variable "name" {
description = "The cluster name, e.g remotenet"
}
variable "regions" {
description = "Regions to launch in"
type = "list"
default = ["AMS2", "TOR1", "LON1", "NYC3", "SFO2", "SGP1", "FRA1"]
}
variable "ssh_private_file" {
description = "SSH private key filename to use to connect to the nodes"
type = "string"
}
variable "ssh_public_file" {
description = "SSH public key filename to copy to the nodes"
type = "string"
}
variable "instance_size" {
description = "The instance size to use"
default = "2gb"
}
variable "servers" {
description = "Desired instance count"
default = 4
}

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[Unit]
Description=gaiad
Requires=network-online.target
After=network-online.target
[Service]
Restart=on-failure
User=gaiad
Group=gaiad
PermissionsStartOnly=true
ExecStart=/usr/bin/gaiad start
ExecReload=/bin/kill -HUP $MAINPID
KillSignal=SIGTERM
[Install]
WantedBy=multi-user.target

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#!/bin/bash
# Script to initialize a testnet settings on a server
#Usage: terraform.sh <testnet_name> <testnet_node_number>
#Add gaiad node number for remote identification
echo "$2" > /etc/gaiad-nodeid
#Create gaiad user
useradd -m -s /bin/bash gaiad
#cp -r /root/.ssh /home/gaiad/.ssh
#chown -R gaiad.gaiad /home/gaiad/.ssh
#chmod -R 700 /home/gaiad/.ssh
#Reload services to enable the gaiad service (note that the gaiad binary is not available yet)
systemctl daemon-reload
systemctl enable gaiad

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#Terraform Configuration
variable "DO_API_TOKEN" {
description = "DigitalOcean Access Token"
}
variable "TESTNET_NAME" {
description = "Name of the testnet"
default = "remotenet"
}
variable "SSH_PRIVATE_FILE" {
description = "SSH private key file to be used to connect to the nodes"
type = "string"
}
variable "SSH_PUBLIC_FILE" {
description = "SSH public key file to be used on the nodes"
type = "string"
}
variable "SERVERS" {
description = "Number of nodes in testnet"
default = "4"
}
provider "digitalocean" {
token = "${var.DO_API_TOKEN}"
}
module "cluster" {
source = "./cluster"
name = "${var.TESTNET_NAME}"
ssh_private_file = "${var.SSH_PRIVATE_FILE}"
ssh_public_file = "${var.SSH_PUBLIC_FILE}"
servers = "${var.SERVERS}"
}
output "public_ips" {
value = "${module.cluster.public_ips}"
}