Merge pull request #1471 from tendermint/greg/devopstools

Greg/devopstools

DOCKER/.gitignore

@@ -0,0 +1 @@
+tendermint

DOCKER/Dockerfile

@@ -1,45 +1,39 @@
 FROM alpine:3.7
+MAINTAINER Greg Szabo <greg@tendermint.com>
 
-# This is the release of tendermint to pull in.
-ENV TM_VERSION 0.17.1
-ENV TM_SHA256SUM d57008c63d2d9176861137e38ed203da486febf20ae7d388fb810a75afff8f24
-
-# Tendermint will be looking for genesis file in /tendermint (unless you change
-# `genesis_file` in config.toml). You can put your config.toml and private
-# validator file into /tendermint.
+# Tendermint will be looking for the genesis file in /tendermint/config/genesis.json
+# (unless you change `genesis_file` in config.toml). You can put your config.toml and
+# private validator file into /tendermint/config.
 #
 # The /tendermint/data dir is used by tendermint to store state.
-ENV DATA_ROOT /tendermint
-ENV TMHOME $DATA_ROOT
-
-# Set user right away for determinism
-RUN addgroup tmuser && \
-    adduser -S -G tmuser tmuser
-
-# Create directory for persistence and give our user ownership
-RUN mkdir -p $DATA_ROOT && \
-    chown -R tmuser:tmuser $DATA_ROOT
+ENV TMHOME /tendermint
 
+# OS environment setup
+# Set user right away for determinism, create directory for persistence and give our user ownership
 # jq and curl used for extracting `pub_key` from private validator while
 # deploying tendermint with Kubernetes. It is nice to have bash so the users
 # could execute bash commands.
-RUN apk add --no-cache bash curl jq
+RUN apk update && \
+    apk upgrade && \
+    apk --no-cache add curl jq bash && \
+    addgroup tmuser && \
+    adduser -S -G tmuser tmuser -h "$TMHOME"
 
-RUN apk add --no-cache openssl && \
-    wget https://github.com/tendermint/tendermint/releases/download/v${TM_VERSION}/tendermint_${TM_VERSION}_linux_amd64.zip && \
-    echo "${TM_SHA256SUM}  tendermint_${TM_VERSION}_linux_amd64.zip" | sha256sum -c && \
-    unzip -d /bin tendermint_${TM_VERSION}_linux_amd64.zip && \
-    apk del openssl && \
-    rm -f tendermint_${TM_VERSION}_linux_amd64.zip
+# Run the container with tmuser by default. (UID=100, GID=1000)
+USER tmuser
 
 # Expose the data directory as a volume since there's mutable state in there
-VOLUME $DATA_ROOT
+VOLUME [ $TMHOME ]
 
-# p2p port
-EXPOSE 46656
-# rpc port
-EXPOSE 46657
+WORKDIR $TMHOME
 
-ENTRYPOINT ["tendermint"]
+# p2p and rpc port
+EXPOSE 46656 46657
 
+ENTRYPOINT ["/usr/bin/tendermint"]
 CMD ["node", "--moniker=`hostname`"]
+STOPSIGNAL SIGTERM
+
+ARG BINARY=tendermint
+COPY $BINARY /usr/bin/tendermint
+

Makefile

@@ -178,6 +178,14 @@ metalinter_all:
 	@echo "--> Running linter (all)"
 	gometalinter.v2 --vendor --deadline=600s --enable-all --disable=lll ./...
 
+###########################################################
+### Docker image
+
+build-docker:
+	cp build/tendermint DOCKER/tendermint
+	docker build --label=tendermint --tag="tendermint/tendermint" DOCKER
+	rm -rf DOCKER/tendermint
+
 ###########################################################
 ### Local testnet using docker
 
@@ -186,17 +194,36 @@ build-linux:
 	GOOS=linux GOARCH=amd64 $(MAKE) build
 
 # Run a 4-node testnet locally
-docker-start:
-	@echo "Wait until 'Attaching to node0, node1, node2, node3' message appears"
-	@if ! [ -f build/node0/config/genesis.json ]; then docker run --rm -v `pwd`/build:/tendermint:Z tendermint/localnode testnet --v 4 --o . --populate-persistent-peers --starting-ip-address 192.167.10.2 ; fi
+localnet-start:
+	@if ! [ -f build/node0/config/genesis.json ]; then docker run --rm -v $(CURDIR)/build:/tendermint:Z tendermint/localnode testnet --v 4 --o . --populate-persistent-peers --starting-ip-address 192.167.10.2 ; fi
 	docker-compose up
 
 # Stop testnet
-docker-stop:
+localnet-stop:
 	docker-compose down
 
+###########################################################
+### Remote full-nodes (sentry) using terraform and ansible
+
+# Server management
+sentry-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_KEY_FILE="$(HOME)/.ssh/id_rsa.pub"
+	@if ! [ -f $(CURDIR)/build/node0/config/genesis.json ]; then docker run --rm -v $(CURDIR)/build:/tendermint:Z tendermint/localnode testnet --v 0 --n 4 --o . ; fi
+	cd networks/remote/ansible && ANSIBLE_HOST_KEY_CHECKING=False ansible-playbook -i inventory/digital_ocean.py -l sentrynet install.yml
+	@echo "Next step: Add your validator setup in the genesis.json and config.tml files and run \"make server-config\". (Public key of validator, chain ID, peer IP and node ID.)"
+
+# Configuration management
+sentry-config:
+	cd networks/remote/ansible && ansible-playbook -i inventory/digital_ocean.py -l sentrynet config.yml -e BINARY=$(CURDIR)/build/tendermint -e CONFIGDIR=$(CURDIR)/build
+
+sentry-stop:
+	@if [ -z "$(DO_API_TOKEN)" ]; then echo "DO_API_TOKEN environment variable not set." ; false ; fi
+	cd networks/remote/terraform && terraform destroy -var DO_API_TOKEN="$(DO_API_TOKEN)" -var SSH_KEY_FILE="$(HOME)/.ssh/id_rsa.pub"
+
 # 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: check build build_race dist install check_tools get_tools update_tools get_vendor_deps draw_deps test_cover test_apps test_persistence test_p2p test test_race test_integrations test_release test100 vagrant_test fmt build-linux docker-start docker-stop
+.PHONY: check build build_race dist install check_tools get_tools update_tools get_vendor_deps draw_deps test_cover test_apps test_persistence test_p2p test test_race test_integrations test_release test100 vagrant_test fmt build-linux localnet-start localnet-stop build-docker sentry-start sentry-config sentry-stop
 

docker-compose/localnode/wrapper.sh

@@ -1,33 +0,0 @@
-#!/usr/bin/env sh
-
-##
-## Input parameters
-##
-BINARY=/tendermint/${BINARY:-tendermint}
-ID=${ID:-0}
-LOG=${LOG:-tendermint.log}
-
-##
-## Assert linux binary
-##
-if ! [ -f "${BINARY}" ]; then
-	echo "The binary `basename ${BINARY}` cannot be found. Please add the binary to the shared folder. Please use the BINARY environment variable if the name of the binary is not 'tendermint' E.g.: -e BINARY=tendermint_my_test_version"
-	exit 1
-fi
-BINARY_CHECK="`file $BINARY | grep 'ELF 64-bit LSB executable, x86-64'`"
-if [ -z "${BINARY_CHECK}" ]; then
-	echo "Binary needs to be OS linux, ARCH amd64"
-	exit 1
-fi
-
-##
-## Run binary with all parameters
-##
-export TMHOME="/tendermint/node${ID}"
-
-if [ -d "${TMHOME}/${LOG}" ]; then
-  "$BINARY" $@ | tee "${TMHOME}/${LOG}"
-else
-  "$BINARY" $@
-fi
-

networks/local/localnode/wrapper.sh

@@ -0,0 +1,35 @@
+#!/usr/bin/env sh
+
+##
+## Input parameters
+##
+BINARY=/tendermint/${BINARY:-tendermint}
+ID=${ID:-0}
+LOG=${LOG:-tendermint.log}
+
+##
+## Assert linux binary
+##
+if ! [ -f "${BINARY}" ]; then
+	echo "The binary $(basename "${BINARY}") cannot be found. Please add the binary to the shared folder. Please use the BINARY environment variable if the name of the binary is not 'tendermint' E.g.: -e BINARY=tendermint_my_test_version"
+	exit 1
+fi
+BINARY_CHECK="$(file "$BINARY" | grep 'ELF 64-bit LSB executable, x86-64')"
+if [ -z "${BINARY_CHECK}" ]; then
+	echo "Binary needs to be OS linux, ARCH amd64"
+	exit 1
+fi
+
+##
+## Run binary with all parameters
+##
+export TMHOME="/tendermint/node${ID}"
+
+if [ -d "`dirname ${TMHOME}/${LOG}`" ]; then
+  "$BINARY" "$@" | tee "${TMHOME}/${LOG}"
+else
+  "$BINARY" "$@"
+fi
+
+chmod 777 -R /tendermint
+

networks/remote/ansible/.gitignore

@@ -0,0 +1 @@
+*.retry

networks/remote/ansible/README.rst

@@ -0,0 +1,52 @@
+Using Ansible
+=============
+
+.. figure:: assets/a_plus_t.png
+   :alt: Ansible plus Tendermint
+
+   Ansible plus Tendermint
+
+The playbooks in `the ansible directory <https://github.com/tendermint/tendermint/tree/master/networks/remote/ansible>`__ 
+run ansible `roles <http://www.ansible.com/>`__ to configure the sentry node architecture.
+
+Prerequisites
+-------------
+
+-  Install `Ansible 2.0 or higher <https://www.ansible.com>`__ on a linux machine.
+-  Create a `DigitalOcean API token <https://cloud.digitalocean.com/settings/api/tokens>`__ with read and write capability.
+-  Create SSH keys
+-  Install the python dopy package (for the digital_ocean.py script)
+
+Build
+-----
+
+::
+
+    export DO_API_TOKEN="abcdef01234567890abcdef01234567890"
+    export SSH_KEY_FILE="$HOME/.ssh/id_rsa.pub"
+
+    
+    ansible-playbook -i inventory/digital_ocean.py -l sentrynet install.yml
+
+    # The scripts assume that you have your validator set up already.
+    # You can create the folder structure for the sentry nodes using `tendermint testnet`.
+    # For example: tendermint testnet --v 0 --n 4 --o build/
+    # Then copy your genesis.json and modify the config.toml as you see fit.
+
+    # Reconfig the sentry nodes with a new BINARY and the configuration files from the build folder:
+    ansible-playbook -i inventory/digital_ocean.py -l sentrynet config.yml -e BINARY=`pwd`/build/tendermint -e CONFIGDIR=`pwd`/build
+
+Shipping logs to logz.io
+------------------------
+
+Logz.io is an Elastic stack (Elastic search, Logstash and Kibana) service provider. You can set up your nodes to log there automatically. Create an account and get your API key from the notes on `this page <https://app.logz.io/#/dashboard/data-sources/Filebeat>`__.
+
+::
+
+   yum install systemd-devel || echo "This will only work on RHEL-based systems."
+   apt-get install libsystemd-dev || echo "This will only work on Debian-based systems."
+
+   go get github.com/mheese/journalbeat
+   ansible-playbook -i inventory/digital_ocean.py -l sentrynet logzio.yml -e LOGZIO_TOKEN=ABCDEFGHIJKLMNOPQRSTUVWXYZ012345
+
+

networks/remote/ansible/ansible.cfg

@@ -0,0 +1,4 @@
+[defaults]
+retry_files_enabled = False
+host_key_checking = False
+

networks/remote/ansible/config.yml

@@ -0,0 +1,18 @@
+---
+
+#Requires BINARY and CONFIGDIR variables set.
+#N=4 hosts by default.
+
+- hosts: all
+  user: root
+  any_errors_fatal: true
+  gather_facts: yes
+  vars:
+    - service: tendermint
+    - N: 4
+  roles:
+    - stop
+    - config
+    - unsafe_reset
+    - start
+

networks/remote/ansible/install.yml

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

networks/remote/ansible/inventory/COPYING

@@ -0,0 +1,675 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
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+software and other kinds of works.
+
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+

networks/remote/ansible/inventory/digital_ocean.ini

@@ -0,0 +1,34 @@
+# 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 = {}

networks/remote/ansible/inventory/digital_ocean.py

@@ -0,0 +1,471 @@
+#!/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()

networks/remote/ansible/logzio.yml

@@ -0,0 +1,14 @@
+---
+
+#Note: You need to add LOGZIO_TOKEN variable with your API key. Like tihs: ansible-playbook -e LOGZIO_TOKEN=ABCXYZ123456
+
+- hosts: all
+  user: root
+  any_errors_fatal: true
+  gather_facts: no
+  vars:
+    - service: tendermint
+    - JOURNALBEAT_BINARY: "{{lookup('env', 'GOPATH')}}/bin/journalbeat"
+  roles:
+    - logzio
+

networks/remote/ansible/reset.yml

@@ -0,0 +1,14 @@
+---
+
+- hosts: all
+  user: root
+  any_errors_fatal: true
+  gather_facts: no
+  vars:
+    - service: tendermint
+  roles:
+    - stop
+    - unsafe_reset
+    - start
+
+

networks/remote/ansible/restart.yml

@@ -0,0 +1,12 @@
+---
+
+- hosts: all
+  user: root
+  any_errors_fatal: true
+  gather_facts: no
+  vars:
+    - service: tendermint
+  roles:
+    - stop
+    - start
+

networks/remote/ansible/roles/config/tasks/main.yml

@@ -0,0 +1,17 @@
+---
+
+- name: Copy binary
+  copy:
+    src: "{{BINARY}}"
+    dest: /usr/bin
+    mode: 0755
+
+- name: Copy config
+  when: item <= N and ansible_hostname == 'sentrynet-node' ~ item
+  copy:
+    src: "{{CONFIGDIR}}/node{{item}}/"
+    dest: "/home/{{service}}/.{{service}}/"
+    owner: "{{service}}"
+    group: "{{service}}"
+  loop: [ 0, 1, 2, 3, 4, 5, 6, 7 ]
+

networks/remote/ansible/roles/install/handlers/main.yml

@@ -0,0 +1,5 @@
+---
+
+- name: reload services
+  systemd: "name={{service}} daemon_reload=yes enabled=yes"
+

networks/remote/ansible/roles/install/tasks/main.yml

@@ -0,0 +1,15 @@
+---
+
+- name: Create service group
+  group: "name={{service}}"
+
+- name: Create service user
+  user: "name={{service}} group={{service}} home=/home/{{service}}"
+
+- name: Change user folder to more permissive
+  file: "path=/home/{{service}} mode=0755"
+
+- name: Create service
+  template: "src=systemd.service.j2 dest=/etc/systemd/system/{{service}}.service"
+  notify: reload services
+

networks/remote/ansible/roles/install/templates/systemd.service.j2

@@ -0,0 +1,17 @@
+[Unit]
+Description={{service}}
+Requires=network-online.target
+After=network-online.target
+
+[Service]
+Restart=on-failure
+User={{service}}
+Group={{service}}
+PermissionsStartOnly=true
+ExecStart=/usr/bin/tendermint node --proxy_app=dummy
+ExecReload=/bin/kill -HUP $MAINPID
+KillSignal=SIGTERM
+
+[Install]
+WantedBy=multi-user.target
+

networks/remote/ansible/roles/logzio/files/journalbeat.service

@@ -0,0 +1,15 @@
+[Unit]
+Description=journalbeat
+#propagates activation, deactivation and activation fails.
+Requires=network-online.target
+After=network-online.target
+
+[Service]
+Restart=on-failure
+ExecStart=/usr/bin/journalbeat -c /etc/journalbeat/journalbeat.yml -path.home /usr/share/journalbeat -path.config /etc/journalbeat -path.data /var/lib/journalbeat -path.logs /var/log/journalbeat
+Restart=always
+
+[Install]
+WantedBy=multi-user.target
+
+

networks/remote/ansible/roles/logzio/handlers/main.yml

@@ -0,0 +1,8 @@
+---
+
+- name: reload daemon
+  command: "systemctl daemon-reload"
+
+- name: restart journalbeat
+  service: name=journalbeat state=restarted
+

networks/remote/ansible/roles/logzio/tasks/main.yml

@@ -0,0 +1,27 @@
+---
+
+- name: Copy journalbeat binary
+  copy: src="{{JOURNALBEAT_BINARY}}" dest=/usr/bin/journalbeat mode=0755
+  notify: restart journalbeat
+
+- name: Create folders
+  file: "path={{item}} state=directory recurse=yes"
+  with_items:
+  - /etc/journalbeat
+  - /etc/pki/tls/certs
+  - /usr/share/journalbeat
+  - /var/log/journalbeat
+
+- name: Copy journalbeat config
+  template: src=journalbeat.yml.j2 dest=/etc/journalbeat/journalbeat.yml mode=0600
+  notify: restart journalbeat
+
+- name: Get server certificate for Logz.io
+  get_url: "url=https://raw.githubusercontent.com/logzio/public-certificates/master/COMODORSADomainValidationSecureServerCA.crt force=yes dest=/etc/pki/tls/certs/COMODORSADomainValidationSecureServerCA.crt"
+
+- name: Copy journalbeat service config
+  copy: src=journalbeat.service dest=/etc/systemd/system/journalbeat.service
+  notify:
+  - reload daemon
+  - restart journalbeat
+  

networks/remote/ansible/roles/logzio/templates/journalbeat.yml.j2

@@ -0,0 +1,342 @@
+#======================== Journalbeat Configuration ============================
+
+journalbeat:
+  # What position in journald to seek to at start up
+  # options: cursor, tail, head (defaults to tail)
+  #seek_position: tail
+
+  # If seek_position is set to cursor and seeking to cursor fails
+  # fall back to this method.  If set to none will it will exit
+  # options: tail, head, none (defaults to tail)
+  #cursor_seek_fallback: tail
+
+  # Store the cursor of the successfully published events
+  #write_cursor_state: true
+
+  # Path to the file to store the cursor (defaults to ".journalbeat-cursor-state")
+  #cursor_state_file: .journalbeat-cursor-state
+
+  # How frequently should we save the cursor to disk (defaults to 5s)
+  #cursor_flush_period: 5s
+
+  # Path to the file to store the queue of events pending (defaults to ".journalbeat-pending-queue")
+  #pending_queue.file: .journalbeat-pending-queue
+
+  # How frequently should we save the queue to disk (defaults to 1s).
+  # Pending queue represents the WAL of events queued to be published
+  # or being published and waiting for acknowledgement. In case of a
+  # regular restart of journalbeat all the events not yet acknowledged
+  # will be flushed to disk during the shutdown.
+  # In case of disaster most probably journalbeat won't get a chance to shutdown
+  # itself gracefully and this flush period option will serve you as a
+  # backup creation frequency option.
+  #pending_queue.flush_period: 1s
+
+  # Lowercase and remove leading underscores, e.g. "_MESSAGE" -> "message"
+  # (defaults to false)
+  #clean_field_names: false
+
+  # All journal entries are strings by default. You can try to convert them to numbers.
+  # (defaults to false)
+  #convert_to_numbers: false
+
+  # Store all the fields of the Systemd Journal entry under this field
+  # Can be almost any string suitable to be a field name of an ElasticSearch document.
+  # Dots can be used to create nested fields.
+  # Two exceptions:
+  #  - no repeated dots;
+  #  - no trailing dots, e.g. "journal..field_name." will fail
+  # (defaults to "" hence stores on the upper level of the event)
+  #move_metadata_to_field: ""
+
+  # Specific units to monitor.
+  units: ["{{service}}.service"]
+
+  # Specify Journal paths to open. You can pass an array of paths to Systemd Journal paths.
+  # If you want to open Journal from directory just pass an array consisting of one element
+  # representing the path. See: https://www.freedesktop.org/software/systemd/man/sd_journal_open.html
+  # By default this setting is empty thus journalbeat will attempt to find all journal files automatically
+  #journal_paths: ["/var/log/journal"]
+
+  #default_type: journal
+
+#================================ General ======================================
+
+# The name of the shipper that publishes the network data. It can be used to group
+# all the transactions sent by a single shipper in the web interface.
+# If this options is not defined, the hostname is used.
+#name: journalbeat
+
+# The tags of the shipper are included in their own field with each
+# transaction published. Tags make it easy to group servers by different
+# logical properties.
+tags: ["{{service}}"]
+
+# Optional fields that you can specify to add additional information to the
+# output. Fields can be scalar values, arrays, dictionaries, or any nested
+# combination of these.
+fields:
+  logzio_codec: plain
+  token: {{LOGZIO_TOKEN}}
+
+# If this option is set to true, the custom fields are stored as top-level
+# fields in the output document instead of being grouped under a fields
+# sub-dictionary. Default is false.
+fields_under_root: true
+
+# Internal queue size for single events in processing pipeline
+#queue_size: 1000
+
+# The internal queue size for bulk events in the processing pipeline.
+# Do not modify this value.
+#bulk_queue_size: 0
+
+# Sets the maximum number of CPUs that can be executing simultaneously. The
+# default is the number of logical CPUs available in the system.
+#max_procs:
+
+#================================ Processors ===================================
+
+# Processors are used to reduce the number of fields in the exported event or to
+# enhance the event with external metadata. This section defines a list of
+# processors that are applied one by one and the first one receives the initial
+# event:
+#
+#   event -> filter1 -> event1 -> filter2 ->event2 ...
+#
+# The supported processors are drop_fields, drop_event, include_fields, and
+# add_cloud_metadata.
+#
+# For example, you can use the following processors to keep the fields that
+# contain CPU load percentages, but remove the fields that contain CPU ticks
+# values:
+#
+processors:
+#- include_fields:
+#    fields: ["cpu"]
+- drop_fields:
+    fields: ["beat.name", "beat.version", "logzio_codec", "SYSLOG_IDENTIFIER", "SYSLOG_FACILITY", "PRIORITY"]
+#
+# The following example drops the events that have the HTTP response code 200:
+#
+#processors:
+#- drop_event:
+#    when:
+#       equals:
+#           http.code: 200
+#
+# The following example enriches each event with metadata from the cloud
+# provider about the host machine. It works on EC2, GCE, and DigitalOcean.
+#
+#processors:
+#- add_cloud_metadata:
+#
+
+#================================ Outputs ======================================
+
+# Configure what outputs to use when sending the data collected by the beat.
+# Multiple outputs may be used.
+
+#----------------------------- Logstash output ---------------------------------
+output.logstash:
+  # Boolean flag to enable or disable the output module.
+  enabled: true
+
+  # The Logstash hosts
+  hosts: ["listener.logz.io:5015"]
+
+  # Number of workers per Logstash host.
+  #worker: 1
+
+  # Set gzip compression level.
+  #compression_level: 3
+
+  # Optional load balance the events between the Logstash hosts
+  #loadbalance: true
+
+  # Number of batches to be send asynchronously to logstash while processing
+  # new batches.
+  #pipelining: 0
+
+  # Optional index name. The default index name is set to name of the beat
+  # in all lowercase.
+  #index: 'beatname'
+
+  # SOCKS5 proxy server URL
+  #proxy_url: socks5://user:password@socks5-server:2233
+
+  # Resolve names locally when using a proxy server. Defaults to false.
+  #proxy_use_local_resolver: false
+
+  # Enable SSL support. SSL is automatically enabled, if any SSL setting is set.
+  ssl.enabled: true
+
+  # Configure SSL verification mode. If `none` is configured, all server hosts
+  # and certificates will be accepted. In this mode, SSL based connections are
+  # susceptible to man-in-the-middle attacks. Use only for testing. Default is
+  # `full`.
+  ssl.verification_mode: full
+
+  # List of supported/valid TLS versions. By default all TLS versions 1.0 up to
+  # 1.2 are enabled.
+  #ssl.supported_protocols: [TLSv1.0, TLSv1.1, TLSv1.2]
+
+  # Optional SSL configuration options. SSL is off by default.
+  # List of root certificates for HTTPS server verifications
+  ssl.certificate_authorities: ["/etc/pki/tls/certs/COMODORSADomainValidationSecureServerCA.crt"]
+
+  # Certificate for SSL client authentication
+  #ssl.certificate: "/etc/pki/client/cert.pem"
+
+  # Client Certificate Key
+  #ssl.key: "/etc/pki/client/cert.key"
+
+  # Optional passphrase for decrypting the Certificate Key.
+  #ssl.key_passphrase: ''
+
+  # Configure cipher suites to be used for SSL connections
+  #ssl.cipher_suites: []
+
+  # Configure curve types for ECDHE based cipher suites
+  #ssl.curve_types: []
+
+#------------------------------- File output -----------------------------------
+#output.file:
+  # Boolean flag to enable or disable the output module.
+  #enabled: true
+
+  # Path to the directory where to save the generated files. The option is
+  # mandatory.
+  #path: "/tmp/beatname"
+
+  # Name of the generated files. The default is `beatname` and it generates
+  # files: `beatname`, `beatname.1`, `beatname.2`, etc.
+  #filename: beatname
+
+  # Maximum size in kilobytes of each file. When this size is reached, and on
+  # every beatname restart, the files are rotated. The default value is 10240
+  # kB.
+  #rotate_every_kb: 10000
+
+  # Maximum number of files under path. When this number of files is reached,
+  # the oldest file is deleted and the rest are shifted from last to first. The
+  # default is 7 files.
+  #number_of_files: 7
+
+
+#----------------------------- Console output ---------------------------------
+#output.console:
+  # Boolean flag to enable or disable the output module.
+  #enabled: true
+
+  # Pretty print json event
+  #pretty: false
+
+#================================= Paths ======================================
+
+# The home path for the beatname installation. This is the default base path
+# for all other path settings and for miscellaneous files that come with the
+# distribution (for example, the sample dashboards).
+# If not set by a CLI flag or in the configuration file, the default for the
+# home path is the location of the binary.
+#path.home:
+
+# The configuration path for the beatname installation. This is the default
+# base path for configuration files, including the main YAML configuration file
+# and the Elasticsearch template file. If not set by a CLI flag or in the
+# configuration file, the default for the configuration path is the home path.
+#path.config: ${path.home}
+
+# The data path for the beatname installation. This is the default base path
+# for all the files in which beatname needs to store its data. If not set by a
+# CLI flag or in the configuration file, the default for the data path is a data
+# subdirectory inside the home path.
+#path.data: ${path.home}/data
+
+# The logs path for a beatname installation. This is the default location for
+# the Beat's log files. If not set by a CLI flag or in the configuration file,
+# the default for the logs path is a logs subdirectory inside the home path.
+#path.logs: ${path.home}/logs
+
+#============================== Dashboards =====================================
+# These settings control loading the sample dashboards to the Kibana index. Loading
+# the dashboards is disabled by default and can be enabled either by setting the
+# options here, or by using the `-setup` CLI flag.
+#dashboards.enabled: false
+
+# The URL from where to download the dashboards archive. By default this URL
+# has a value which is computed based on the Beat name and version. For released
+# versions, this URL points to the dashboard archive on the artifacts.elastic.co
+# website.
+#dashboards.url:
+
+# The directory from where to read the dashboards. It is used instead of the URL
+# when it has a value.
+#dashboards.directory:
+
+# The file archive (zip file) from where to read the dashboards. It is used instead
+# of the URL when it has a value.
+#dashboards.file:
+
+# If this option is enabled, the snapshot URL is used instead of the default URL.
+#dashboards.snapshot: false
+
+# The URL from where to download the snapshot version of the dashboards. By default
+# this has a value which is computed based on the Beat name and version.
+#dashboards.snapshot_url
+
+# In case the archive contains the dashboards from multiple Beats, this lets you
+# select which one to load. You can load all the dashboards in the archive by
+# setting this to the empty string.
+#dashboards.beat: beatname
+
+# The name of the Kibana index to use for setting the configuration. Default is ".kibana"
+#dashboards.kibana_index: .kibana
+
+# The Elasticsearch index name. This overwrites the index name defined in the
+# dashboards and index pattern. Example: testbeat-*
+#dashboards.index:
+
+#================================ Logging ======================================
+# There are three options for the log output: syslog, file, stderr.
+# Under Windows systems, the log files are per default sent to the file output,
+# under all other system per default to syslog.
+
+# Sets log level. The default log level is info.
+# Available log levels are: critical, error, warning, info, debug
+#logging.level: info
+
+# Enable debug output for selected components. To enable all selectors use ["*"]
+# Other available selectors are "beat", "publish", "service"
+# Multiple selectors can be chained.
+#logging.selectors: [ ]
+
+# Send all logging output to syslog. The default is false.
+#logging.to_syslog: true
+
+# If enabled, beatname periodically logs its internal metrics that have changed
+# in the last period. For each metric that changed, the delta from the value at
+# the beginning of the period is logged. Also, the total values for
+# all non-zero internal metrics are logged on shutdown. The default is true.
+#logging.metrics.enabled: true
+
+# The period after which to log the internal metrics. The default is 30s.
+#logging.metrics.period: 30s
+
+# Logging to rotating files files. Set logging.to_files to false to disable logging to
+# files.
+logging.to_files: true
+logging.files:
+  # Configure the path where the logs are written. The default is the logs directory
+  # under the home path (the binary location).
+  #path: /var/log/beatname
+
+  # The name of the files where the logs are written to.
+  #name: beatname
+
+  # Configure log file size limit. If limit is reached, log file will be
+  # automatically rotated
+  #rotateeverybytes: 10485760 # = 10MB
+
+  # Number of rotated log files to keep. Oldest files will be deleted first.
+  #keepfiles: 7

networks/remote/ansible/roles/start/tasks/main.yml

@@ -0,0 +1,5 @@
+---
+
+- name: start service
+  service: "name={{service}} state=started"
+

networks/remote/ansible/roles/status/tasks/main.yml

@@ -0,0 +1,10 @@
+---
+
+- name: application service status
+  command: "service {{service}} status"
+  changed_when: false
+  register: status
+
+- name: Result
+  debug: var=status.stdout_lines
+

networks/remote/ansible/roles/stop/tasks/main.yml

@@ -0,0 +1,5 @@
+---
+
+- name: stop service
+  service: "name={{service}} state=stopped"
+

networks/remote/ansible/roles/unsafe_reset/tasks/main.yml

@@ -0,0 +1,4 @@
+- command: "{{service}} unsafe_reset_all {{ (service != 'tendermint') | ternary('node','') }} --home /home/{{service}}/.{{service}}"
+  become_user: "{{service}}"
+  become: yes
+

networks/remote/ansible/start.yml

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

networks/remote/ansible/status.yml

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

networks/remote/ansible/stop.yml

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

networks/remote/terraform/.gitignore

@@ -0,0 +1,4 @@
+.terraform
+terraform.tfstate
+terraform.tfstate.backup
+terraform.tfstate.d

networks/remote/terraform/README.rst

@@ -0,0 +1,33 @@
+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 SSH_KEY_FILE="$HOME/.ssh/id_rsa.pub"
+
+    terraform init
+    terraform apply -var DO_API_TOKEN="$DO_API_TOKEN" -var SSH_KEY_FILE="$SSH_KEY_FILE"
+
+At the end you will get a list of IP addresses that belongs to your new droplets.
+
+Destroy
+-------
+
+Run the below:
+
+::
+
+    terraform destroy

networks/remote/terraform/cluster/main.tf

@@ -0,0 +1,28 @@
+resource "digitalocean_tag" "cluster" {
+  name = "${var.name}"
+}
+
+resource "digitalocean_ssh_key" "cluster" {
+  name       = "${var.name}"
+  public_key = "${file(var.ssh_key)}"
+}
+
+resource "digitalocean_droplet" "cluster" {
+  name = "${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 {
+    timeout = "30s"
+  }
+
+}
+

networks/remote/terraform/cluster/outputs.tf

@@ -0,0 +1,15 @@
+// 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}"]
+}
+

networks/remote/terraform/cluster/variables.tf

@@ -0,0 +1,25 @@
+variable "name" {
+  description = "The cluster name, e.g cdn"
+}
+
+variable "regions" {
+  description = "Regions to launch in"
+  type = "list"
+  default = ["AMS2", "FRA1", "LON1", "NYC3", "SFO2", "SGP1", "TOR1"]
+}
+
+variable "ssh_key" {
+  description = "SSH 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
+}
+

networks/remote/terraform/main.tf

@@ -0,0 +1,37 @@
+#Terraform Configuration
+
+variable "DO_API_TOKEN" {
+  description = "DigitalOcean Access Token"
+}
+
+variable "TESTNET_NAME" {
+  description = "Name of the testnet"
+  default = "sentrynet"
+}
+
+variable "SSH_KEY_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_key          = "${var.SSH_KEY_FILE}"
+  servers          = "${var.SERVERS}"
+}
+
+
+output "public_ips" {
+  value = "${module.cluster.public_ips}"
+}
+