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WIP: terraform openstack

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Paul Czarkowski 2016-06-05 15:52:20 -05:00
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137
contrib/terraform/openstack/README.md 100644
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# Kubernetes on Openstack with Terraform
Provision a Kubernetes cluster with [Terraform](https://www.terraform.io) on
Openstack.
## Status
This will install a Kubernetes cluster on an Openstack Cloud. It is tested on a
OpenStack Cloud provided by [BlueBox](https://www.blueboxcloud.com/) and
should work on most modern installs of OpenStack that support the basic
services.
There are some assumptions made to try and ensure it will work on your openstack cluster.
* floating-ips are used for access
* you already have a suitable OS image in glance
* you already have both an internal network and a floating-ip pool created
* you have security-groups enabled
## Requirements
- [Install Terraform](https://www.terraform.io/intro/getting-started/install.html)
## Terraform
Terraform will be used to provision all of the OpenStack resources required to
run Docker Swarm. It is also used to deploy and provision the software
requirements.
### Prep
#### OpenStack
Ensure your OpenStack credentials are loaded in environment variables. This is
how I do it:
```
$ source ~/.stackrc
```
You will need two networks before installing, an internal network and
an external (floating IP Pool) network. The internet network can be shared as
we use security groups to provide network segregation. Due to the many
differences between OpenStack installs the Terraform does not attempt to create
these for you.
By default Terraform will expect that your networks are called `internal` and
`external`. You can change this by altering the Terraform variables `network_name` and `floatingip_pool`.
A full list of variables you can change can be found at [variables.tf](variables.tf).
All OpenStack resources will use the Terraform variable `cluster_name` (
default `example`) in their name to make it easier to track. For example the
first compute resource will be named `example-kubernetes-1`.
#### Terraform
Ensure your local ssh-agent is running and your ssh key has been added. This
step is required by the terraform provisioner:
```
$ eval $(ssh-agent -s)
$ ssh-add ~/.ssh/id_rsa
```
Ensure that you have your Openstack credentials loaded into Terraform
environment variables. Likely via a command similar to:
```
$ echo Setting up Terraform creds && \
export TF_VAR_username=${OS_USERNAME} && \
export TF_VAR_password=${OS_PASSWORD} && \
export TF_VAR_tenant=${OS_TENANT_NAME} && \
export TF_VAR_auth_url=${OS_AUTH_URL}
```
# Provision a Kubernetes Cluster on OpenStack
```
terraform apply -state=contrib/terraform/openstack/terraform.tfstate contrib/terraform/openstack
openstack_compute_secgroup_v2.k8s_master: Creating...
description: "" => "example - Kubernetes Master"
name: "" => "example-k8s-master"
rule.#: "" => "<computed>"
...
...
Apply complete! Resources: 9 added, 0 changed, 0 destroyed.
The state of your infrastructure has been saved to the path
below. This state is required to modify and destroy your
infrastructure, so keep it safe. To inspect the complete state
use the `terraform show` command.
State path: contrib/terraform/openstack/terraform.tfstate
```
Make sure you can connect to the hosts:
```
$ ansible -i contrib/terraform/openstack/hosts -m ping all
example-k8s_node-1 | SUCCESS => {
"changed": false,
"ping": "pong"
}
example-etcd-1 | SUCCESS => {
"changed": false,
"ping": "pong"
}
example-k8s-master-1 | SUCCESS => {
"changed": false,
"ping": "pong"
}
```
if it fails try to connect manually via SSH ... it could be somthing as simple as a stale host key.
Deploy kubernetes:
```
$ ansible-playbook --become -i contrib/terraform/openstack/hosts cluster.yml
```
# clean up:
```
$ terraform destroy
Do you really want to destroy?
Terraform will delete all your managed infrastructure.
There is no undo. Only 'yes' will be accepted to confirm.
Enter a value: yes
...
...
Apply complete! Resources: 0 added, 0 changed, 12 destroyed.
```

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contrib/terraform/openstack/group_vars/all.yml 100644
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# Directory where the binaries will be installed
bin_dir: /usr/local/bin
# Where the binaries will be downloaded.
# Note: ensure that you've enough disk space (about 1G)
local_release_dir: "/tmp/releases"
# Uncomment this line for CoreOS only.
# Directory where python binary is installed
# ansible_python_interpreter: "/opt/bin/python"
# This is the group that the cert creation scripts chgrp the
# cert files to. Not really changable...
kube_cert_group: kube-cert
# Cluster Loglevel configuration
kube_log_level: 2
# Users to create for basic auth in Kubernetes API via HTTP
kube_api_pwd: "changeme"
kube_users:
kube:
pass: "{{kube_api_pwd}}"
role: admin
root:
pass: "changeme"
role: admin
# Kubernetes cluster name, also will be used as DNS domain
cluster_name: cluster.local
# For some environments, each node has a pubilcally accessible
# address and an address it should bind services to. These are
# really inventory level variables, but described here for consistency.
#
# When advertising access, the access_ip will be used, but will defer to
# ip and then the default ansible ip when unspecified.
#
# When binding to restrict access, the ip variable will be used, but will
# defer to the default ansible ip when unspecified.
#
# The ip variable is used for specific address binding, e.g. listen address
# for etcd. This is use to help with environments like Vagrant or multi-nic
# systems where one address should be preferred over another.
# ip: 10.2.2.2
#
# The access_ip variable is used to define how other nodes should access
# the node. This is used in flannel to allow other flannel nodes to see
# this node for example. The access_ip is really useful AWS and Google
# environments where the nodes are accessed remotely by the "public" ip,
# but don't know about that address themselves.
# access_ip: 1.1.1.1
# Choose network plugin (calico, weave or flannel)
kube_network_plugin: flannel
# Kubernetes internal network for services, unused block of space.
kube_service_addresses: 10.233.0.0/18
# internal network. When used, it will assign IP
# addresses from this range to individual pods.
# This network must be unused in your network infrastructure!
kube_pods_subnet: 10.233.64.0/18
# internal network total size (optional). This is the prefix of the
# entire network. Must be unused in your environment.
# kube_network_prefix: 18
# internal network node size allocation (optional). This is the size allocated
# to each node on your network. With these defaults you should have
# room for 4096 nodes with 254 pods per node.
kube_network_node_prefix: 24
# With calico it is possible to distributed routes with border routers of the datacenter.
peer_with_router: false
# Warning : enabling router peering will disable calico's default behavior ('node mesh').
# The subnets of each nodes will be distributed by the datacenter router
# The port the API Server will be listening on.
kube_apiserver_ip: "{{ kube_service_addresses|ipaddr('net')|ipaddr(1)|ipaddr('address') }}"
kube_apiserver_port: 443 # (https)
kube_apiserver_insecure_port: 8080 # (http)
# Internal DNS configuration.
# Kubernetes can create and mainatain its own DNS server to resolve service names
# into appropriate IP addresses. It's highly advisable to run such DNS server,
# as it greatly simplifies configuration of your applications - you can use
# service names instead of magic environment variables.
# You still must manually configure all your containers to use this DNS server,
# Kubernetes won't do this for you (yet).
# Upstream dns servers used by dnsmasq
upstream_dns_servers:
- 8.8.8.8
- 8.8.4.4
#
# # Use dns server : https://github.com/ansibl8s/k8s-skydns/blob/master/skydns-README.md
dns_setup: true
dns_domain: "{{ cluster_name }}"
#
# # Ip address of the kubernetes skydns service
skydns_server: "{{ kube_service_addresses|ipaddr('net')|ipaddr(3)|ipaddr('address') }}"
dns_server: "{{ kube_service_addresses|ipaddr('net')|ipaddr(2)|ipaddr('address') }}"
# There are some changes specific to the cloud providers
# for instance we need to encapsulate packets with some network plugins
# If set the possible values are either 'gce', 'aws' or 'openstack'
# When openstack is used make sure to source in the openstack credentials
# like you would do when using nova-client before starting the playbook.
# cloud_provider:
# For multi masters architecture:
# kube-proxy doesn't support multiple apiservers for the time being so you'll need to configure your own loadbalancer
# This domain name will be inserted into the /etc/hosts file of all servers
# configuration example with haproxy :
# listen kubernetes-apiserver-https
# bind 10.99.0.21:8383
# option ssl-hello-chk
# mode tcp
# timeout client 3h
# timeout server 3h
# server master1 10.99.0.26:443
# server master2 10.99.0.27:443
# balance roundrobin
# apiserver_loadbalancer_domain_name: "lb-apiserver.kubernetes.local"
## Set these proxy values in order to update docker daemon to use proxies
# http_proxy: ""
# https_proxy: ""
# no_proxy: ""
## A string of extra options to pass to the docker daemon.
## This string should be exactly as you wish it to appear.
## An obvious use case is allowing insecure-registry access
## to self hosted registries like so:
docker_options: "--insecure-registry={{ kube_service_addresses }}"

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../terraform.py

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contrib/terraform/openstack/kubespray.tf 100644
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resource "openstack_networking_floatingip_v2" "k8s_master" {
count = "${var.number_of_k8s_masters}"
pool = "${var.floatingip_pool}"
}
resource "openstack_networking_floatingip_v2" "k8s_node" {
count = "${var.number_of_k8s_nodes}"
pool = "${var.floatingip_pool}"
}
resource "openstack_compute_keypair_v2" "k8s" {
name = "kubernetes-${var.cluster_name}"
public_key = "${file(var.public_key_path)}"
}
resource "openstack_compute_secgroup_v2" "k8s_master" {
name = "${var.cluster_name}-k8s-master"
description = "${var.cluster_name} - Kubernetes Master"
}
resource "openstack_compute_secgroup_v2" "k8s" {
name = "${var.cluster_name}-k8s"
description = "${var.cluster_name} - Kubernetes"
rule {
ip_protocol = "tcp"
from_port = "22"
to_port = "22"
cidr = "0.0.0.0/0"
}
rule {
ip_protocol = "icmp"
from_port = "-1"
to_port = "-1"
cidr = "0.0.0.0/0"
}
rule {
ip_protocol = "tcp"
from_port = "1"
to_port = "65535"
self = true
}
rule {
ip_protocol = "udp"
from_port = "1"
to_port = "65535"
self = true
}
rule {
ip_protocol = "icmp"
from_port = "-1"
to_port = "-1"
self = true
}
}
resource "openstack_compute_instance_v2" "k8s_master" {
name = "${var.cluster_name}-k8s-master-${count.index+1}"
count = "${var.number_of_k8s_masters}"
image_name = "${var.image}"
flavor_id = "${var.flavor_k8s_master}"
key_pair = "${openstack_compute_keypair_v2.k8s.name}"
network {
name = "${var.network_name}"
}
security_groups = [ "${openstack_compute_secgroup_v2.k8s_master.name}",
"${openstack_compute_secgroup_v2.k8s.name}" ]
floating_ip = "${element(openstack_networking_floatingip_v2.k8s_master.*.address, count.index)}"
metadata = {
ssh_user = "${var.ssh_user}"
kubespray_groups = "etcd,kube-master,kube-node,k8s-cluster"
}
}
resource "openstack_compute_instance_v2" "k8s_node" {
name = "${var.cluster_name}-k8s-node-${count.index+1}"
count = "${var.number_of_k8s_nodes}"
image_name = "${var.image}"
flavor_id = "${var.flavor_k8s_node}"
key_pair = "${openstack_compute_keypair_v2.k8s.name}"
network {
name = "${var.network_name}"
}
security_groups = ["${openstack_compute_secgroup_v2.k8s.name}" ]
floating_ip = "${element(openstack_networking_floatingip_v2.k8s_node.*.address, count.index)}"
metadata = {
ssh_user = "${var.ssh_user}"
kubespray_groups = "kube-node,k8s-cluster"
}
}
#output "msg" {
# value = "Your hosts are ready to go!\nYour ssh hosts are: ${join(", ", openstack_networking_floatingip_v2.k8s_master.*.address )}"
#}

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contrib/terraform/openstack/terraform.tfstate 100644
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{
"version": 1,
"serial": 17,
"modules": [
{
"path": [
"root"
],
"outputs": {},
"resources": {
"openstack_compute_instance_v2.k8s_master.0": {
"type": "openstack_compute_instance_v2",
"depends_on": [
"openstack_compute_keypair_v2.k8s",
"openstack_compute_secgroup_v2.k8s",
"openstack_compute_secgroup_v2.k8s_master",
"openstack_networking_floatingip_v2.k8s_master"
],
"primary": {
"id": "f4a44f6e-33ff-4e35-b593-34f3dfd80dc9",
"attributes": {
"access_ip_v4": "173.247.105.12",
"access_ip_v6": "",
"flavor_id": "3",
"flavor_name": "m1.medium",
"floating_ip": "173.247.105.12",
"id": "f4a44f6e-33ff-4e35-b593-34f3dfd80dc9",
"image_id": "1525c3f3-1224-4958-bd07-da9feaedf18b",
"image_name": "ubuntu-14.04",
"key_pair": "kubernetes-example",
"metadata.#": "2",
"metadata.kubespray_groups": "etcd,kube-master,kube-node,k8s-cluster",
"metadata.ssh_user": "ubuntu",
"name": "example-k8s-master-1",
"network.#": "1",
"network.0.access_network": "false",
"network.0.fixed_ip_v4": "10.230.7.86",
"network.0.fixed_ip_v6": "",
"network.0.floating_ip": "173.247.105.12",
"network.0.mac": "fa:16:3e:fb:82:1d",
"network.0.name": "internal",
"network.0.port": "",
"network.0.uuid": "ba0fdd03-72b5-41eb-bb67-fef437fd6cb4",
"security_groups.#": "2",
"security_groups.2779334175": "example-k8s",
"security_groups.3772290257": "example-k8s-master",
"volume.#": "0"
}
}
},
"openstack_compute_instance_v2.k8s_master.1": {
"type": "openstack_compute_instance_v2",
"depends_on": [
"openstack_compute_keypair_v2.k8s",
"openstack_compute_secgroup_v2.k8s",
"openstack_compute_secgroup_v2.k8s_master",
"openstack_networking_floatingip_v2.k8s_master"
],
"primary": {
"id": "cbb565fe-a3b6-44ff-8f81-8ec29704d11b",
"attributes": {
"access_ip_v4": "173.247.105.70",
"access_ip_v6": "",
"flavor_id": "3",
"flavor_name": "m1.medium",
"floating_ip": "173.247.105.70",
"id": "cbb565fe-a3b6-44ff-8f81-8ec29704d11b",
"image_id": "1525c3f3-1224-4958-bd07-da9feaedf18b",
"image_name": "ubuntu-14.04",
"key_pair": "kubernetes-example",
"metadata.#": "2",
"metadata.kubespray_groups": "etcd,kube-master,kube-node,k8s-cluster",
"metadata.ssh_user": "ubuntu",
"name": "example-k8s-master-2",
"network.#": "1",
"network.0.access_network": "false",
"network.0.fixed_ip_v4": "10.230.7.85",
"network.0.fixed_ip_v6": "",
"network.0.floating_ip": "173.247.105.70",
"network.0.mac": "fa:16:3e:33:98:e6",
"network.0.name": "internal",
"network.0.port": "",
"network.0.uuid": "ba0fdd03-72b5-41eb-bb67-fef437fd6cb4",
"security_groups.#": "2",
"security_groups.2779334175": "example-k8s",
"security_groups.3772290257": "example-k8s-master",
"volume.#": "0"
}
}
},
"openstack_compute_instance_v2.k8s_node": {
"type": "openstack_compute_instance_v2",
"depends_on": [
"openstack_compute_keypair_v2.k8s",
"openstack_compute_secgroup_v2.k8s",
"openstack_networking_floatingip_v2.k8s_node"
],
"primary": {
"id": "39deed7e-8307-4b62-b56c-ce2b405a03fa",
"attributes": {
"access_ip_v4": "173.247.105.76",
"access_ip_v6": "",
"flavor_id": "3",
"flavor_name": "m1.medium",
"floating_ip": "173.247.105.76",
"id": "39deed7e-8307-4b62-b56c-ce2b405a03fa",
"image_id": "1525c3f3-1224-4958-bd07-da9feaedf18b",
"image_name": "ubuntu-14.04",
"key_pair": "kubernetes-example",
"metadata.#": "2",
"metadata.kubespray_groups": "kube-node,k8s-cluster",
"metadata.ssh_user": "ubuntu",
"name": "example-k8s-node-1",
"network.#": "1",
"network.0.access_network": "false",
"network.0.fixed_ip_v4": "10.230.7.84",
"network.0.fixed_ip_v6": "",
"network.0.floating_ip": "173.247.105.76",
"network.0.mac": "fa:16:3e:53:57:bc",
"network.0.name": "internal",
"network.0.port": "",
"network.0.uuid": "ba0fdd03-72b5-41eb-bb67-fef437fd6cb4",
"security_groups.#": "1",
"security_groups.2779334175": "example-k8s",
"volume.#": "0"
}
}
},
"openstack_compute_keypair_v2.k8s": {
"type": "openstack_compute_keypair_v2",
"primary": {
"id": "kubernetes-example",
"attributes": {
"id": "kubernetes-example",
"name": "kubernetes-example",
"public_key": "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC9nU6RPYCabjLH1LvJfpp9L8r8q5RZ6niS92zD95xpm2b2obVydWe0tCSFdmULBuvT8Q8YQ4qOG2g/oJlsGOsia+4CQjYEUV9CgTH9H5HK3vUOwtO5g2eFnYKSmI/4znHa0WYpQFnQK2kSSeCs2beTlJhc8vjfN/2HHmuny6SxNSbnCk/nZdwamxEONIVdjlm3CSBlq4PChT/D/uUqm/nOm0Zqdk9ZlTBkucsjiOCJeEzg4HioKmIH8ewqsKuS7kMADHPH98JMdBhTKbYbLrxTC/RfiaON58WJpmdOA935TT5Td5aVQZoqe/i/5yFRp5fMG239jtfbM0Igu44TEIib pczarkowski@Pauls-MacBook-Pro.local\n"
}
}
},
"openstack_compute_secgroup_v2.k8s": {
"type": "openstack_compute_secgroup_v2",
"primary": {
"id": "418394e2-b4be-4953-b7a3-b309bf28fbdb",
"attributes": {
"description": "example - Kubernetes",
"id": "418394e2-b4be-4953-b7a3-b309bf28fbdb",
"name": "example-k8s",
"rule.#": "5",
"rule.112275015.cidr": "",
"rule.112275015.from_group_id": "",
"rule.112275015.from_port": "1",
"rule.112275015.id": "597170c9-b35a-45c0-8717-652a342f3fd6",
"rule.112275015.ip_protocol": "tcp",
"rule.112275015.self": "true",
"rule.112275015.to_port": "65535",
"rule.2180185248.cidr": "0.0.0.0/0",
"rule.2180185248.from_group_id": "",
"rule.2180185248.from_port": "-1",
"rule.2180185248.id": "ffdcdd5e-f18b-4537-b502-8849affdfed9",
"rule.2180185248.ip_protocol": "icmp",
"rule.2180185248.self": "false",
"rule.2180185248.to_port": "-1",
"rule.3267409695.cidr": "",
"rule.3267409695.from_group_id": "",
"rule.3267409695.from_port": "-1",
"rule.3267409695.id": "4f91d9ca-940c-4f4d-9ce1-024cbd7d9c54",
"rule.3267409695.ip_protocol": "icmp",
"rule.3267409695.self": "true",
"rule.3267409695.to_port": "-1",
"rule.635693822.cidr": "",
"rule.635693822.from_group_id": "",
"rule.635693822.from_port": "1",
"rule.635693822.id": "c6816e5b-a1a4-4071-acce-d09b92d14d49",
"rule.635693822.ip_protocol": "udp",
"rule.635693822.self": "true",
"rule.635693822.to_port": "65535",
"rule.836640770.cidr": "0.0.0.0/0",
"rule.836640770.from_group_id": "",
"rule.836640770.from_port": "22",
"rule.836640770.id": "8845acba-636b-4c23-b9e2-5bff76d9008d",
"rule.836640770.ip_protocol": "tcp",
"rule.836640770.self": "false",
"rule.836640770.to_port": "22"
}
}
},
"openstack_compute_secgroup_v2.k8s_master": {
"type": "openstack_compute_secgroup_v2",
"primary": {
"id": "c74aed25-6161-46c4-a488-dfc7f49a228e",
"attributes": {
"description": "example - Kubernetes Master",
"id": "c74aed25-6161-46c4-a488-dfc7f49a228e",
"name": "example-k8s-master",
"rule.#": "0"
}
}
},
"openstack_networking_floatingip_v2.k8s_master.0": {
"type": "openstack_networking_floatingip_v2",
"primary": {
"id": "2a320c67-214d-4631-a840-2de82505ed3f",
"attributes": {
"address": "173.247.105.12",
"id": "2a320c67-214d-4631-a840-2de82505ed3f",
"pool": "external",
"port_id": ""
}
}
},
"openstack_networking_floatingip_v2.k8s_master.1": {
"type": "openstack_networking_floatingip_v2",
"primary": {
"id": "3adbfc13-e7ae-4bcf-99d3-3ba9db056e1f",
"attributes": {
"address": "173.247.105.70",
"id": "3adbfc13-e7ae-4bcf-99d3-3ba9db056e1f",
"pool": "external",
"port_id": ""
}
}
},
"openstack_networking_floatingip_v2.k8s_node": {
"type": "openstack_networking_floatingip_v2",
"primary": {
"id": "a3f77aa6-5c3a-4edf-b97e-ee211dfa81e1",
"attributes": {
"address": "173.247.105.76",
"id": "a3f77aa6-5c3a-4edf-b97e-ee211dfa81e1",
"pool": "external",
"port_id": ""
}
}
}
}
}
]
}

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{
"version": 1,
"serial": 16,
"modules": [
{
"path": [
"root"
],
"outputs": {},
"resources": {}
}
]
}

61
contrib/terraform/openstack/variables.tf 100644
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variable "cluster_name" {
default = "example"
}
variable "number_of_k8s_masters" {
default = 2
}
variable "number_of_k8s_nodes" {
default = 1
}
variable "public_key_path" {
description = "The path of the ssh pub key"
default = "~/.ssh/id_rsa.pub"
}
variable "image" {
description = "the image to use"
default = "ubuntu-14.04"
}
variable "ssh_user" {
description = "used to fill out tags for ansible inventory"
default = "ubuntu"
}
variable "flavor_k8s_master" {
default = 3
}
variable "flavor_k8s_node" {
default = 3
}
variable "network_name" {
description = "name of the internal network to use"
default = "internal"
}
variable "floatingip_pool" {
description = "name of the floating ip pool to use"
default = "external"
}
variable "username" {
description = "Your openstack username"
}
variable "password" {
description = "Your openstack password"
}
variable "tenant" {
description = "Your openstack tenant/project"
}
variable "auth_url" {
description = "Your openstack auth URL"
}

736
contrib/terraform/terraform.py 100755
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@ -0,0 +1,736 @@
#!/usr/bin/env python
#
# Copyright 2015 Cisco Systems, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# original: https://github.com/CiscoCloud/terraform.py
"""\
Dynamic inventory for Terraform - finds all `.tfstate` files below the working
directory and generates an inventory based on them.
"""
from __future__ import unicode_literals, print_function
import argparse
from collections import defaultdict
from functools import wraps
import json
import os
import re
VERSION = '0.3.0pre'
def tfstates(root=None):
root = root or os.getcwd()
for dirpath, _, filenames in os.walk(root):
for name in filenames:
if os.path.splitext(name)[-1] == '.tfstate':
yield os.path.join(dirpath, name)
def iterresources(filenames):
for filename in filenames:
with open(filename, 'r') as json_file:
state = json.load(json_file)
for module in state['modules']:
name = module['path'][-1]
for key, resource in module['resources'].items():
yield name, key, resource
## READ RESOURCES
PARSERS = {}
def _clean_dc(dcname):
# Consul DCs are strictly alphanumeric with underscores and hyphens -
# ensure that the consul_dc attribute meets these requirements.
return re.sub('[^\w_\-]', '-', dcname)
def iterhosts(resources):
'''yield host tuples of (name, attributes, groups)'''
for module_name, key, resource in resources:
resource_type, name = key.split('.', 1)
try:
parser = PARSERS[resource_type]
except KeyError:
continue
yield parser(resource, module_name)
def parses(prefix):
def inner(func):
PARSERS[prefix] = func
return func
return inner
def calculate_mantl_vars(func):
"""calculate Mantl vars"""
@wraps(func)
def inner(*args, **kwargs):
name, attrs, groups = func(*args, **kwargs)
# attrs
if attrs.get('role', '') == 'control':
attrs['consul_is_server'] = True
else:
attrs['consul_is_server'] = False
# groups
if attrs.get('publicly_routable', False):
groups.append('publicly_routable')
return name, attrs, groups
return inner
def _parse_prefix(source, prefix, sep='.'):
for compkey, value in source.items():
try:
curprefix, rest = compkey.split(sep, 1)
except ValueError:
continue
if curprefix != prefix or rest == '#':
continue
yield rest, value
def parse_attr_list(source, prefix, sep='.'):
attrs = defaultdict(dict)
for compkey, value in _parse_prefix(source, prefix, sep):
idx, key = compkey.split(sep, 1)
attrs[idx][key] = value
return attrs.values()
def parse_dict(source, prefix, sep='.'):
return dict(_parse_prefix(source, prefix, sep))
def parse_list(source, prefix, sep='.'):
return [value for _, value in _parse_prefix(source, prefix, sep)]
def parse_bool(string_form):
token = string_form.lower()[0]
if token == 't':
return True
elif token == 'f':
return False
else:
raise ValueError('could not convert %r to a bool' % string_form)
@parses('triton_machine')
@calculate_mantl_vars
def triton_machine(resource, module_name):
raw_attrs = resource['primary']['attributes']
name = raw_attrs.get('name')
groups = []
attrs = {
'id': raw_attrs['id'],
'dataset': raw_attrs['dataset'],
'disk': raw_attrs['disk'],
'firewall_enabled': parse_bool(raw_attrs['firewall_enabled']),
'image': raw_attrs['image'],
'ips': parse_list(raw_attrs, 'ips'),
'memory': raw_attrs['memory'],
'name': raw_attrs['name'],
'networks': parse_list(raw_attrs, 'networks'),
'package': raw_attrs['package'],
'primary_ip': raw_attrs['primaryip'],
'root_authorized_keys': raw_attrs['root_authorized_keys'],
'state': raw_attrs['state'],
'tags': parse_dict(raw_attrs, 'tags'),
'type': raw_attrs['type'],
'user_data': raw_attrs['user_data'],
'user_script': raw_attrs['user_script'],
# ansible
'ansible_ssh_host': raw_attrs['primaryip'],
'ansible_ssh_port': 22,
'ansible_ssh_user': 'root', # it's "root" on Triton by default
# generic
'public_ipv4': raw_attrs['primaryip'],
'provider': 'triton',
}
# private IPv4
for ip in attrs['ips']:
if ip.startswith('10') or ip.startswith('192.168'): # private IPs
attrs['private_ipv4'] = ip
break
if 'private_ipv4' not in attrs:
attrs['private_ipv4'] = attrs['public_ipv4']
# attrs specific to Mantl
attrs.update({
'consul_dc': _clean_dc(attrs['tags'].get('dc', 'none')),
'role': attrs['tags'].get('role', 'none'),
'ansible_python_interpreter': attrs['tags'].get('python_bin', 'python')
})
# add groups based on attrs
groups.append('triton_image=' + attrs['image'])
groups.append('triton_package=' + attrs['package'])
groups.append('triton_state=' + attrs['state'])
groups.append('triton_firewall_enabled=%s' % attrs['firewall_enabled'])
groups.extend('triton_tags_%s=%s' % item
for item in attrs['tags'].items())
groups.extend('triton_network=' + network
for network in attrs['networks'])
# groups specific to Mantl
groups.append('role=' + attrs['role'])
groups.append('dc=' + attrs['consul_dc'])
return name, attrs, groups
@parses('digitalocean_droplet')
@calculate_mantl_vars
def digitalocean_host(resource, tfvars=None):
raw_attrs = resource['primary']['attributes']
name = raw_attrs['name']
groups = []
attrs = {
'id': raw_attrs['id'],
'image': raw_attrs['image'],
'ipv4_address': raw_attrs['ipv4_address'],
'locked': parse_bool(raw_attrs['locked']),
'metadata': json.loads(raw_attrs.get('user_data', '{}')),
'region': raw_attrs['region'],
'size': raw_attrs['size'],
'ssh_keys': parse_list(raw_attrs, 'ssh_keys'),
'status': raw_attrs['status'],
# ansible
'ansible_ssh_host': raw_attrs['ipv4_address'],
'ansible_ssh_port': 22,
'ansible_ssh_user': 'root', # it's always "root" on DO
# generic
'public_ipv4': raw_attrs['ipv4_address'],
'private_ipv4': raw_attrs.get('ipv4_address_private',
raw_attrs['ipv4_address']),
'provider': 'digitalocean',
}
# attrs specific to Mantl
attrs.update({
'consul_dc': _clean_dc(attrs['metadata'].get('dc', attrs['region'])),
'role': attrs['metadata'].get('role', 'none'),
'ansible_python_interpreter': attrs['metadata'].get('python_bin','python')
})
# add groups based on attrs
groups.append('do_image=' + attrs['image'])
groups.append('do_locked=%s' % attrs['locked'])
groups.append('do_region=' + attrs['region'])
groups.append('do_size=' + attrs['size'])
groups.append('do_status=' + attrs['status'])
groups.extend('do_metadata_%s=%s' % item
for item in attrs['metadata'].items())
# groups specific to Mantl
groups.append('role=' + attrs['role'])
groups.append('dc=' + attrs['consul_dc'])
return name, attrs, groups
@parses('softlayer_virtualserver')
@calculate_mantl_vars
def softlayer_host(resource, module_name):
raw_attrs = resource['primary']['attributes']
name = raw_attrs['name']
groups = []
attrs = {
'id': raw_attrs['id'],
'image': raw_attrs['image'],
'ipv4_address': raw_attrs['ipv4_address'],
'metadata': json.loads(raw_attrs.get('user_data', '{}')),
'region': raw_attrs['region'],
'ram': raw_attrs['ram'],
'cpu': raw_attrs['cpu'],
'ssh_keys': parse_list(raw_attrs, 'ssh_keys'),
'public_ipv4': raw_attrs['ipv4_address'],
'private_ipv4': raw_attrs['ipv4_address_private'],
'ansible_ssh_host': raw_attrs['ipv4_address'],
'ansible_ssh_port': 22,
'ansible_ssh_user': 'root',
'provider': 'softlayer',
}
# attrs specific to Mantl
attrs.update({
'consul_dc': _clean_dc(attrs['metadata'].get('dc', attrs['region'])),
'role': attrs['metadata'].get('role', 'none'),
'ansible_python_interpreter': attrs['metadata'].get('python_bin','python')
})
# groups specific to Mantl
groups.append('role=' + attrs['role'])
groups.append('dc=' + attrs['consul_dc'])
return name, attrs, groups
@parses('openstack_compute_instance_v2')
@calculate_mantl_vars
def openstack_host(resource, module_name):
raw_attrs = resource['primary']['attributes']
name = raw_attrs['name']
groups = []
attrs = {
'access_ip_v4': raw_attrs['access_ip_v4'],
'access_ip_v6': raw_attrs['access_ip_v6'],
'flavor': parse_dict(raw_attrs, 'flavor',
sep='_'),
'id': raw_attrs['id'],
'image': parse_dict(raw_attrs, 'image',
sep='_'),
'key_pair': raw_attrs['key_pair'],
'metadata': parse_dict(raw_attrs, 'metadata'),
'network': parse_attr_list(raw_attrs, 'network'),
'region': raw_attrs.get('region', ''),
'security_groups': parse_list(raw_attrs, 'security_groups'),
# ansible
'ansible_ssh_port': 22,
# workaround for an OpenStack bug where hosts have a different domain
# after they're restarted
'host_domain': 'novalocal',
'use_host_domain': True,
# generic
'public_ipv4': raw_attrs['access_ip_v4'],
'private_ipv4': raw_attrs['access_ip_v4'],
'provider': 'openstack',
}
if 'floating_ip' in raw_attrs:
attrs['private_ipv4'] = raw_attrs['network.0.fixed_ip_v4']
try:
attrs.update({
'ansible_ssh_host': raw_attrs['access_ip_v4'],
'publicly_routable': True,
})
except (KeyError, ValueError):
attrs.update({'ansible_ssh_host': '', 'publicly_routable': False})
# attrs specific to Ansible
if 'metadata.ssh_user' in raw_attrs:
attrs['ansible_ssh_user'] = raw_attrs['metadata.ssh_user']
# attrs specific to Mantl
attrs.update({
'consul_dc': _clean_dc(attrs['metadata'].get('dc', module_name)),
'role': attrs['metadata'].get('role', 'none'),
'ansible_python_interpreter': attrs['metadata'].get('python_bin','python')
})
# add groups based on attrs
groups.append('os_image=' + attrs['image']['name'])
groups.append('os_flavor=' + attrs['flavor']['name'])
groups.extend('os_metadata_%s=%s' % item
for item in attrs['metadata'].items())
groups.append('os_region=' + attrs['region'])
# groups specific to Mantl
groups.append('role=' + attrs['metadata'].get('role', 'none'))
groups.append('dc=' + attrs['consul_dc'])
# groups specific to kubespray
for group in attrs['metadata'].get('kubespray_groups', "").split(","):
groups.append(group)
return name, attrs, groups
@parses('aws_instance')
@calculate_mantl_vars
def aws_host(resource, module_name):
name = resource['primary']['attributes']['tags.Name']
raw_attrs = resource['primary']['attributes']
groups = []
attrs = {
'ami': raw_attrs['ami'],
'availability_zone': raw_attrs['availability_zone'],
'ebs_block_device': parse_attr_list(raw_attrs, 'ebs_block_device'),
'ebs_optimized': parse_bool(raw_attrs['ebs_optimized']),
'ephemeral_block_device': parse_attr_list(raw_attrs,
'ephemeral_block_device'),
'id': raw_attrs['id'],
'key_name': raw_attrs['key_name'],
'private': parse_dict(raw_attrs, 'private',
sep='_'),
'public': parse_dict(raw_attrs, 'public',
sep='_'),
'root_block_device': parse_attr_list(raw_attrs, 'root_block_device'),
'security_groups': parse_list(raw_attrs, 'security_groups'),
'subnet': parse_dict(raw_attrs, 'subnet',
sep='_'),
'tags': parse_dict(raw_attrs, 'tags'),
'tenancy': raw_attrs['tenancy'],
'vpc_security_group_ids': parse_list(raw_attrs,
'vpc_security_group_ids'),
# ansible-specific
'ansible_ssh_port': 22,
'ansible_ssh_host': raw_attrs['public_ip'],
# generic
'public_ipv4': raw_attrs['public_ip'],
'private_ipv4': raw_attrs['private_ip'],
'provider': 'aws',
}
# attrs specific to Ansible
if 'tags.sshUser' in raw_attrs:
attrs['ansible_ssh_user'] = raw_attrs['tags.sshUser']
if 'tags.sshPrivateIp' in raw_attrs:
attrs['ansible_ssh_host'] = raw_attrs['private_ip']
# attrs specific to Mantl
attrs.update({
'consul_dc': _clean_dc(attrs['tags'].get('dc', module_name)),
'role': attrs['tags'].get('role', 'none'),
'ansible_python_interpreter': attrs['tags'].get('python_bin','python')
})
# groups specific to Mantl
groups.extend(['aws_ami=' + attrs['ami'],
'aws_az=' + attrs['availability_zone'],
'aws_key_name=' + attrs['key_name'],
'aws_tenancy=' + attrs['tenancy']])
groups.extend('aws_tag_%s=%s' % item for item in attrs['tags'].items())
groups.extend('aws_vpc_security_group=' + group
for group in attrs['vpc_security_group_ids'])
groups.extend('aws_subnet_%s=%s' % subnet
for subnet in attrs['subnet'].items())
# groups specific to Mantl
groups.append('role=' + attrs['role'])
groups.append('dc=' + attrs['consul_dc'])
return name, attrs, groups
@parses('google_compute_instance')
@calculate_mantl_vars
def gce_host(resource, module_name):
name = resource['primary']['id']
raw_attrs = resource['primary']['attributes']
groups = []
# network interfaces
interfaces = parse_attr_list(raw_attrs, 'network_interface')
for interface in interfaces:
interface['access_config'] = parse_attr_list(interface,
'access_config')
for key in interface.keys():
if '.' in key:
del interface[key]
# general attrs
attrs = {
'can_ip_forward': raw_attrs['can_ip_forward'] == 'true',
'disks': parse_attr_list(raw_attrs, 'disk'),
'machine_type': raw_attrs['machine_type'],
'metadata': parse_dict(raw_attrs, 'metadata'),
'network': parse_attr_list(raw_attrs, 'network'),
'network_interface': interfaces,
'self_link': raw_attrs['self_link'],
'service_account': parse_attr_list(raw_attrs, 'service_account'),
'tags': parse_list(raw_attrs, 'tags'),
'zone': raw_attrs['zone'],
# ansible
'ansible_ssh_port': 22,
'provider': 'gce',
}
# attrs specific to Ansible
if 'metadata.ssh_user' in raw_attrs:
attrs['ansible_ssh_user'] = raw_attrs['metadata.ssh_user']
# attrs specific to Mantl
attrs.update({
'consul_dc': _clean_dc(attrs['metadata'].get('dc', module_name)),
'role': attrs['metadata'].get('role', 'none'),
'ansible_python_interpreter': attrs['metadata'].get('python_bin','python')
})
try:
attrs.update({
'ansible_ssh_host': interfaces[0]['access_config'][0]['nat_ip'] or interfaces[0]['access_config'][0]['assigned_nat_ip'],
'public_ipv4': interfaces[0]['access_config'][0]['nat_ip'] or interfaces[0]['access_config'][0]['assigned_nat_ip'],
'private_ipv4': interfaces[0]['address'],
'publicly_routable': True,
})
except (KeyError, ValueError):
attrs.update({'ansible_ssh_host': '', 'publicly_routable': False})
# add groups based on attrs
groups.extend('gce_image=' + disk['image'] for disk in attrs['disks'])
groups.append('gce_machine_type=' + attrs['machine_type'])
groups.extend('gce_metadata_%s=%s' % (key, value)
for (key, value) in attrs['metadata'].items()
if key not in set(['sshKeys']))
groups.extend('gce_tag=' + tag for tag in attrs['tags'])
groups.append('gce_zone=' + attrs['zone'])
if attrs['can_ip_forward']:
groups.append('gce_ip_forward')
if attrs['publicly_routable']:
groups.append('gce_publicly_routable')
# groups specific to Mantl
groups.append('role=' + attrs['metadata'].get('role', 'none'))
groups.append('dc=' + attrs['consul_dc'])
return name, attrs, groups
@parses('vsphere_virtual_machine')
@calculate_mantl_vars
def vsphere_host(resource, module_name):
raw_attrs = resource['primary']['attributes']
network_attrs = parse_dict(raw_attrs, 'network_interface')
network = parse_dict(network_attrs, '0')
ip_address = network.get('ipv4_address', network['ip_address'])
name = raw_attrs['name']
groups = []
attrs = {
'id': raw_attrs['id'],
'ip_address': ip_address,
'private_ipv4': ip_address,
'public_ipv4': ip_address,
'metadata': parse_dict(raw_attrs, 'custom_configuration_parameters'),
'ansible_ssh_port': 22,
'provider': 'vsphere',
}
try:
attrs.update({
'ansible_ssh_host': ip_address,
})
except (KeyError, ValueError):
attrs.update({'ansible_ssh_host': '', })
attrs.update({
'consul_dc': _clean_dc(attrs['metadata'].get('consul_dc', module_name)),
'role': attrs['metadata'].get('role', 'none'),
'ansible_python_interpreter': attrs['metadata'].get('python_bin','python')
})
# attrs specific to Ansible
if 'ssh_user' in attrs['metadata']:
attrs['ansible_ssh_user'] = attrs['metadata']['ssh_user']
groups.append('role=' + attrs['role'])
groups.append('dc=' + attrs['consul_dc'])
return name, attrs, groups
@parses('azure_instance')
@calculate_mantl_vars
def azure_host(resource, module_name):
name = resource['primary']['attributes']['name']
raw_attrs = resource['primary']['attributes']
groups = []
attrs = {
'automatic_updates': raw_attrs['automatic_updates'],
'description': raw_attrs['description'],
'hosted_service_name': raw_attrs['hosted_service_name'],
'id': raw_attrs['id'],
'image': raw_attrs['image'],
'ip_address': raw_attrs['ip_address'],
'location': raw_attrs['location'],
'name': raw_attrs['name'],
'reverse_dns': raw_attrs['reverse_dns'],
'security_group': raw_attrs['security_group'],
'size': raw_attrs['size'],
'ssh_key_thumbprint': raw_attrs['ssh_key_thumbprint'],
'subnet': raw_attrs['subnet'],
'username': raw_attrs['username'],
'vip_address': raw_attrs['vip_address'],
'virtual_network': raw_attrs['virtual_network'],
'endpoint': parse_attr_list(raw_attrs, 'endpoint'),
# ansible
'ansible_ssh_port': 22,
'ansible_ssh_user': raw_attrs['username'],
'ansible_ssh_host': raw_attrs['vip_address'],
}
# attrs specific to mantl
attrs.update({
'consul_dc': attrs['location'].lower().replace(" ", "-"),
'role': attrs['description']
})
# groups specific to mantl
groups.extend(['azure_image=' + attrs['image'],
'azure_location=' + attrs['location'].lower().replace(" ", "-"),
'azure_username=' + attrs['username'],
'azure_security_group=' + attrs['security_group']])
# groups specific to mantl
groups.append('role=' + attrs['role'])
groups.append('dc=' + attrs['consul_dc'])
return name, attrs, groups
@parses('clc_server')
@calculate_mantl_vars
def clc_server(resource, module_name):
raw_attrs = resource['primary']['attributes']
name = raw_attrs.get('id')
groups = []
md = parse_dict(raw_attrs, 'metadata')
attrs = {
'metadata': md,
'ansible_ssh_port': md.get('ssh_port', 22),
'ansible_ssh_user': md.get('ssh_user', 'root'),
'provider': 'clc',
'publicly_routable': False,
}
try:
attrs.update({
'public_ipv4': raw_attrs['public_ip_address'],
'private_ipv4': raw_attrs['private_ip_address'],
'ansible_ssh_host': raw_attrs['public_ip_address'],
'publicly_routable': True,
})
except (KeyError, ValueError):
attrs.update({
'ansible_ssh_host': raw_attrs['private_ip_address'],
'private_ipv4': raw_attrs['private_ip_address'],
})
attrs.update({
'consul_dc': _clean_dc(attrs['metadata'].get('dc', module_name)),
'role': attrs['metadata'].get('role', 'none'),
})
groups.append('role=' + attrs['role'])
groups.append('dc=' + attrs['consul_dc'])
return name, attrs, groups
## QUERY TYPES
def query_host(hosts, target):
for name, attrs, _ in hosts:
if name == target:
return attrs
return {}
def query_list(hosts):
groups = defaultdict(dict)
meta = {}
for name, attrs, hostgroups in hosts:
for group in set(hostgroups):
groups[group].setdefault('hosts', [])
groups[group]['hosts'].append(name)
meta[name] = attrs
groups['_meta'] = {'hostvars': meta}
return groups
def query_hostfile(hosts):
out = ['## begin hosts generated by terraform.py ##']
out.extend(
'{}\t{}'.format(attrs['ansible_ssh_host'].ljust(16), name)
for name, attrs, _ in hosts
)
out.append('## end hosts generated by terraform.py ##')
return '\n'.join(out)
def main():
parser = argparse.ArgumentParser(
__file__, __doc__,
formatter_class=argparse.ArgumentDefaultsHelpFormatter, )
modes = parser.add_mutually_exclusive_group(required=True)
modes.add_argument('--list',
action='store_true',
help='list all variables')
modes.add_argument('--host', help='list variables for a single host')
modes.add_argument('--version',
action='store_true',
help='print version and exit')
modes.add_argument('--hostfile',
action='store_true',
help='print hosts as a /etc/hosts snippet')
parser.add_argument('--pretty',
action='store_true',
help='pretty-print output JSON')
parser.add_argument('--nometa',
action='store_true',
help='with --list, exclude hostvars')
default_root = os.environ.get('TERRAFORM_STATE_ROOT',
os.path.abspath(os.path.join(os.path.dirname(__file__),
'..', '..', )))
parser.add_argument('--root',
default=default_root,
help='custom root to search for `.tfstate`s in')
args = parser.parse_args()
if args.version:
print('%s %s' % (__file__, VERSION))
parser.exit()
hosts = iterhosts(iterresources(tfstates(args.root)))
if args.list:
output = query_list(hosts)
if args.nometa:
del output['_meta']
print(json.dumps(output, indent=4 if args.pretty else None))
elif args.host:
output = query_host(hosts, args.host)
print(json.dumps(output, indent=4 if args.pretty else None))
elif args.hostfile:
output = query_hostfile(hosts)
print(output)
parser.exit()
if __name__ == '__main__':
main()