alnoda-workspaces/workspaces/ansible-terraform-workspace/README.md

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# Ansible-Terraform Workspace
This workspace - is a "dockerized" development environment with [Ansible](https://docs.ansible.com/)
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and [Terraform](https://www.terraform.io/) and lots of other stuff installed,
so that you don't need to do it yourself. Create infrastructures with Terraform, and configure it with Ansible.
```
docker run --name space-1 -d -p 8020-8035:8020-8035 alnoda/ansible-terraform-workspace
```
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and open [localhost:8020](http://localhost:8020) in browser
## Contents
* [About](#about)
* [Use-cases](#use-cases)
* [Launch Workspace](#launch-workspace)
* [Workspace terminal](#workspace-terminal)
* [Multiple workspaces](#multiple-workspaces)
* [Open more ports](#open-more-ports)
* [Docker in docker](#docker-in-docker)
* [Run on remote server](#run-on-remote-server)
* [Use Workspace](#use-workspace)
* [Install applications](#install-applications)
* [Schedule jobs with Cron](#schedule-jobs-with-cron)
* [Python](#python)
* [Node.js](#node.js)
* [Run applications and services inside the workspace](#run-applications-and-services-inside-the-workspace)
* [Manage workspaces](#manage-workspaces)
* [Start and stop workspaces](#start-and-stop-workspaces)
* [Create new workspace image](#create-new-workspace-image)
* [Manage workspace images](#manage-workspace-images)
* [Save and load workspace images](#save-and-load-workspace-images)
* [Move workspace to the cloud](#move-workspace-to-the-cloud)
## About
The workspace contains browser-based Visual Studio Code and multiple tools which make working with Ansible and Terraform more convenient.
**Ansible tools:**
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- [**Ansible Ara**](https://github.com/ansible-community/ara). Configured to track execution of all ansible playbooks, has UI.
- [**Ansible-pre-commit**](https://github.com/adarnimrod/ansible-pre-commit)
- [**Ansible-cmdb**](https://github.com/fboender/ansible-cmdb)
- [**Ansible inventory grapher**](https://github.com/willthames/ansible-inventory-grapher)
- [**Ansible Playbook Grapher**](https://github.com/haidaraM/ansible-playbook-grapher)
- [**Ansible Lint**](https://ansible-lint.readthedocs.io/en/latest/installing.html)
- [**Ansible Mitogen**](https://mitogen.networkgenomics.com/ansible_detailed.html)
- [**Ansible Doctor**](https://ansible-doctor.geekdocs.de/)
**Terraform tools:**
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- [**Pre-commit-terraform**](https://github.com/antonbabenko/pre-commit-terraform)
- [**Blast-Radius**](https://github.com/28mm/blast-radius). Has UI, visualizes any terraform project in folder /home/terraform/.
- [**Terraform Visual**](https://github.com/hieven/terraform-visual)
- [**Terraform Graph**](https://www.terraform.io/docs/cli/commands/graph.html)
- [**Inframap**](https://github.com/cycloidio/inframap)
**Common tools:**
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- **Workspace UI** - Browser-based UI for Ansible-Terraform Workspace. Launch all workspace tools from one place. Customize to your yown needs.
- [**Eclipse Theia**](https://theia-ide.org/docs/) - open source version of popular Visual Studio Code IDE. Theia is trully open-source, has
VS-Code extensions and works in browser. This means it can run inside a docker container on local machine or in cloud. For the Ansible-Terraform workspace beautiful [SynthWave '84](https://open-vsx.org/extension/RobbOwen/synthwave-vscode) theme is set by default.
- [**FileBrowser**](https://github.com/filebrowser/filebrowser) - manage files and folders inside the workspace, and exchange data between local environment and the workspace
- [**Cronicle**](https://github.com/jhuckaby/Cronicle) - task scheduler and runner, with a web based front-end UI. It handles both scheduled, repeating and on-demand jobs, targeting any number of worker servers, with real-time stats and live log viewer.
- [**Static File Server**](https://github.com/vercel/serve) - view any static html sites as easy as if you do it on your local machine. Serve static websites easily.
- [**Ungit**](https://github.com/FredrikNoren/ungit) - rings user friendliness to git without sacrificing the versatility of it.
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- [**MkDocs**](https://squidfunk.github.io/mkdocs-material/) - maintain documentation for your workspace or project with only markdown.
- [**Midnight Commander**](https://midnight-commander.org/) - Feature rich visual file manager with internal text viewer and editor.
- [**Process Monitor**](https://htop.dev/) - Monitor running process and resource utilization.
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## Use-cases
There are several reasons to use this workspace.
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1) Convenience. The first and obvious reason to use this workspace - is to get started fast, without wasting time on setting all those tools yourself.
Getting Ansible and Terraform ready to be used, is as simple as starting a docker container. In addition, you get the ability to start and stop multiple workspaces, this makes managing separate independent cloud infrastructures much easier and safe,
for example, you don't need to switch AWS profiles all the time. Also, you can export the entire workspace to file, push to a (private) Docker registry, and have different versions of the workspace.
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2) Deploy the workspace on a cloud server. Schedule ansible playbooks with Cronicle and observe ansible executions with Ara dashboard.
Deployment of this workspace on a cloud server is very handy when you need security, and most of your infra is running in a private network.
The latter makes it impossible to use a local machine as an executor for Ansible playbooks unless you set up a complex VPN. This workspace can
be launched on a bridge server that is in both private and public networks, and you can use browser-based tools to develop and execute
Ansible or Terraform code. Here it is explained how to launch Ansible-Terraform Workspace on a cloud server with HTTPS and authentication.
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<p align="center">
<img src="./img/network.png" alt="Htop" width="750">
</p>
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3) Workspace makes collaboration easier. Both Ansible and Terraform can be used from a developer's local machine. It is convenient
for personal use, but when it comes to collaborations, things become complicated: everyone needs to have the same versions of tools
and dependencies. Workspace can be used and shared "as a whole", removing this difficulty.
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4) Reduce the risk of conflicting executions. Despite there are ways to prevent conflicting executions of Ansible playbooks or
applying Terraform code (i.e. remote Terraform state), this Workspace makes it even easier, when it is deployed on the remote
cloud server, and used by multiple users.
## Ansible Features
## Terraform Features
### Terraform report
A small tool that produces several outputs from a terraform project, and visualizes terraform plan as an interactive HTML page.
If you want to try it out yourself, create key/secret for your AWS account, open workspace and create [file with AWS credentials](https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-profiles.html)
> `mkdir -p ~/.aws`
> `nano ~/.aws/credentials`
The file `~/.aws/credentials` would look like this
```
[terraform]
aws_access_key_id = <YOUR_AWS_KEY>
aws_secret_access_key = <YOUR_AWS_SECRET>
```
Clone this terraform example repo into your workspace
> `git clone https://github.com/pvarentsov/terraform-aws-free-tier /home/project/aws-example`
Open file `/home/project/aws-example/src/free-tier/main.tf` and comment out the part that configures S3 backend
```
terraform {
backend "s3" {}
}
```
Initialize a working Terraform directory
> `cd /home/project/aws-example/src/free-tier && terraform init`
Paste public ssh key (for the sake of example you can type anything)
> `nano ./provision/access/free-tier-ec2-key.pub`
Now you can gen erate terraform report
> `terraform-report`
Open Static file server and look on the generated files
<p align="center">
<img src="./img/terraform-report.gif" alt="Htop" width="750">
</p>
## Launch Workspace
Workspaces - are merely docker containers, that's why managing workspaces is easy and intuitive - it is enough to know only docker commands,
no need to learn any new tools.
In order to avoid confusion, the following convention is adopted:
```sh
command to execute outside of the workspace
```
> `command to execute inside the workspace (after entering running docker container)`
To start a workspace simply execute in terminal
```sh
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docker run --name space-1 -d -p 8020-8035:8020-8035 alnoda/ansible-terraform-workspace
```
*(It is recommended to run workspace in the daemon mode)*
***Open [http://localhost:8020](http://localhost:8020)***
Workspace has its own UI, which includes quiklaunch (home) page and documentation pages.
From the quiklaunch you can open any workspace tool. Documentation pages you modify in order
to document the project, workspace use and setup.
### Workspace terminal
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There are several ways how to work with terminal of the the ansible-terraform workspace:
- built-it in-browser terminal
- use terminal provided by in-browser IDE [http://localhost:8025](http://localhost:8025) ([unless other ports are mapped](#multiple-workspaces))
- ssh into the running the docker container (of the workspace) from your terminal
<p align="center">
<img src="./img/terminal.gif" alt="Base-Workspace terminal" width="500">
</p>
*(Browser-based terminals always work under the user you started the workspace with, the default is non root user "abc")*
If you want to enter running workspace container from your terminal execute:
```sh
docker exec -it space-1 /bin/zsh
```
If you don't want to use z-shell
```
docker exec -it space-1 /bin/bash
```
This way allows to ssh into the workspace as a root user at any time, even if the workspace itself was not starter as root user (the default user is abc)
```sh
docker exec -it --user=root space-1 /bin/zsh
```
You can work in Ubuntu terminal now. Execute the followinng command to know your workspace user
> `whoami`
### Multiple workspaces
Every workspace requires range of ports. If one workspace is up and running, the ports 8020-8035 are taken.
Ansible-terraform workspace itself uses 10 ports (8020-8029), but it is recommended to map several extra ports just in case. Having extra ports,
you can always launch new applications on these ports, and they will be immediately exposed outside of the workspace.
In order to start another workspace, you either need to stop currently runnning workspace, or to run another workspace
on the different port range.
If you are planning to run more than one workspace at the same time, you can run another workspace with
the different port range, for example
```sh
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docker run --name space-2 -d -p 8040-8055:8020-8035 -e ENTRY_PORT=8040 alnoda/ansible-terraform workspace
```
Notice that in addition we need to set environmental variable ENTRY_PORT, which should be equal to the first port in the new range.
Workspace UI usues this variable to know the new port range, and redirects to the proper addresses of the workspace applications' UIs.
### Open more ports
We started workspace container with a port range mapped "-p 8020-8035". If you are planning to expose more applications
from inside of a container, add additional port mapping, for example
```sh
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docker run --name space-1 -d -p 8020-8035:8020-8035 -p 8080:8080 alnoda/ansible-terraform-workspace
```
You can add multiple port mappings:
```sh
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docker run --name space-1 -d -p 8020-8035:8020-8035 -p 8080:8080 -p 443:443 alnoda/ansible-terraform-workspace
```
**NOTE:** It is not a problem if you don't expose any ports, but later on realise you need them -
you will just create new image, and run it exposing the required port (look in the section [Create new image](#create-new-image))
### Docker in docker
It is possible to work with docker directly from the workspace (using workspace terminal).
```
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docker run --name space-1 -d -p 8020-8035:8020-8035 -v /var/run/docker.sock:/var/run/docker.sock alnoda/ansible-terraform-workspace
```
NOTE: in order to use docker in docker you need to or enter into the workspace container as root
```sh
docker exec -it --user=root space-1 /bin/zsh
```
### Run on remote server
Because workspace is just a docker image, running it in any other server is as easy as running it on local laptop.
Running on remote server makes it much simpler to collaborate, because you can just share credentials to the workspace with your peers, and they will be able to use it.
You can also run applications that should run permanently, and run jobs on schedule.
#### Unsecure remote workspace
The simplest deployment of the workkspace requires only 3 steps:
- get virtual server on your favourite cloud (Digital Ocean, Linode, AWS, GC, Azure ...)
- [install docker](https://docs.docker.com/engine/install/) on this server
- ssh to the remote server and start workspace
```
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docker run --name space-1 -d -p 8020-8035:8020-8035 -e WRK_HOST="<ip-of-your-remote-server>" alnoda/ansible-terraform-workspace
```
**NOTE:** When running workspace on the remote server, add envronmental variable `-e WRK_HOST="<ip-of-your-remote-server>"`.
Workspace UI needss this variable to know how redirect properly to the workspace applications' UIs.
Open in your browser `<ip-of-your-remote-server>:8020`
If docker-in-docker is required, then
```
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docker run --name space-1 -d -p 8020-8035:8020-8035 -e WRK_HOST="<ip-of-your-remote-server>" -v /var/run/docker.sock:/var/run/docker.sock alnoda/ansible-terraform-workspace
```
This way launches workspace in cloud, but such workspace is not secure, everyone who knows IP of your server will be able to use it.
#### Secure remote workspace
*You might want to restrict access to the workspace, and secure encrypted communication with the workspace*
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Ansible-terraform-workspace contains utility that will generate everything needed to launch the workspace in cloud in a secure way, with authentication and with TLS.
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If you want to run workspace on the remote server securely, start ansible-terraform workspace on your local laptop first, open its terminal and
use utility `/home/abc/utils/remote.py` to generate create docker-compose project with TLS certificates. Simply execute
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> `python /home/abc/utils/remote.py --workspace="ansible-terraform-workspace" --port="8020" --host="68.183.69.198" --user="user1" --password="pass1"`
**NOTE:** you have to specify the correct host (IP of the server you want to run the workspace on), and user and password of your choice.
You see folder `/home/abc/utils/remote` is created. Copy this folder to the remote server (any location). Ssh to the server, cd into
the directory you copied and execute `docker-compose up -d`.
That's it, you workspace is running securely on the remote server, using
self-signed TLS certificates for encrypted https communication between you laptop and the remote workspace,
and authentication is added.
## Use Workspace
Among the common actions you'd do in the workspace are
- installation of new applications and runtimes
- edit files, write code, scripts
- build, compile and execute code
- start/stop applications and services
- schedule tasks and scripts
- process data
### Install applications
Use workspace workspace terminal to install new applications.
Install with ```sudo apt install```. The default *abc* user is allowed to install packages.
For example, in order to install [Emacs text editor](https://www.gnu.org/software/emacs/) open workspace terminal, and execute
> `sudo apt install emacs`
### Schedule jobs with Cron
Schedule execution of any task with cron - a time-based job scheduler in Unix-like computer operating systems.
Open workspace terminal, and execute
> `crontab -e`
*(chose [1] nano as editor on the first time)*
In the end of the opened file add line
> `* * * * * echo $(whoami) >> /home/cron.txt`
This will print every minute username to file */home/cron.txt* . *(Hit Ctrl+X to exit nano)*
Hint: example of cron job definition:
```
.---------------- minute (0 - 59)
| .------------- hour (0 - 23)
| | .---------- day of month (1 - 31)
| | | .------- month (1 - 12) OR jan,feb,mar,apr ...
| | | | .---- day of week (0 - 6) (Sunday=0 or 7) OR sun,mon,tue,wed,thu,fri,sat
| | | | |
* * * * * command to be executed
```
**NOTE** you can disconnect from the image and close terminal - cron will continue working.
> Instead of cron you might want to use Cronicle - a tool with Web UI, and a great list of features
> that will provide you with the dashboard, list of executions and statistics, even let you ser limis
> on resources for each jobs, and create depenndencies between jobs.
### Python
Python and Pip are installed. To use python console, open workspace terminal and execute
> `python`
install python package with pip, for
> `pip install pandas`
If you are planning to work with python, we recommend to install IPython, that provides a rich toolkit to help
you make the most of using Python interactively. Install and start ipython
> ```pip install ipython```
> `ipython`
### Node.js
We recommend to use nodeenv to create different node environments.
For example, open workspace terminal, create folder npmgui, and activate environment with node v. 12.18.3 and npm v.6.0.0
> `cd /home`
> `mkdir npmgui; cd npmgui`
> `nodeenv --node=12.18.3 --npm=6.0.0 env`
Let's install package and start node application
> `. env/bin/activate && npm i -g npm-gui`
> `npm-gui 0.0.0.0:8030`
Open your browser on http://localhost:8030/
**NOTE:** If you close terminal, the application will stop. See how to [start applications that reamin live after closing a workspace terminal](#run-applications-and-services-inside-the-workspace)
### Run applications and services inside the workspace
If you want application to keep running after workspace terminal is closed start it with **"&!"** at the end.
For example, in the last section we started *npm-gui* tool with command `npm-gui 0.0.0.0:8030`. If you close the workspace terminal,
this application witll stop running. To keep it running after terminal is closed, execute
> `npm-gui 0.0.0.0:8030 &!`
Now, if you disconnect from the workspace and close terminal, the application will continue running in the workspace, untill [workspace is stopped](#start-and-stop-workspaces).
## Manage workspaces
Workspace is just a docker container. You can start, stop, delete and do anything you can do with docker images and containers.
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There are two concepts to keep in mind: **images** and **containers**. Images are workspace blueprints. For example, **alnoda/ansible-terraform-workspace** -
is an image. When you execute this command
```sh
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docker run --name space-1 -d -p 8020-8035:8020-8035 alnoda/ansible-terraform-workspace
```
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you create container called **space-1** from the image **alnoda/ansible-terraform-workspace**. You can create any number of containers, but you need to
[map different ports to each of them](#multiple-workspaces).
Container - is your workspace. You can start, stop and delete them. You can run multiple workspace containers at the same time, or work with
one workspace at a time.
From the workspace (which is a container) you can create new image. This is called **commit docker image**.
Essentially, this means *"take my workspace and create new image with all the changes I've done in my workspace*"
### Start and stop workspaces
The workspace started in daemon mode will continue working in the background.
See all the running docker containers
```
docker ps
```
Stop workspace
```sh
docker stop space-1
```
Workspace is stopped. All the processes and cron jobs are not running.
See all docker conntainers, including stopped
```
docker ps -a
```
Start workspace again. Processes and cron jobs are resumed.
```sh
docker start space-1
```
Delete workspace container (all work will be lost)
```
docker rm space-1
```
### Create new workspace image
Having made changes, you can commit them creating new image of the workspace. In order to create new workspace image with the
name "space-image" and version "0.2" execute
```
docker commit space-1 space-image:0.2
```
Run new workspace with
```
docker run --name space2 -d space-image:0.2
```
The new workspace accommodates all the changes that you've made in your space-1. Hence you can have versions of your workspaces.
Create different versions before the important changes.
### Manage workspace images
See all docker images
```
docker images
```
Delete workspace image entirely
```
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docker rmi -f alnoda/ansible-terraform-workspace
```
**NOTE:** you cannot delete image if there is a running container created from it. Stop container first.
### Save and load workspace images
After you commit workspace container, and create new image out of it, you can push it to your docker registry or save it in a file.
#### Save workspace in a file
Assuming you created new image **space-image:0.4** from your workspace, you can save it as a tar file
```
docker save space-image:0.4 > space-image-0.4.tar
```
We can delete the image with
```
docker rmi -f space-image:0.4
```
And restore it from the tar file
```
docker load < space-image-0.4.tar
```
#### Push workspace to a registry
A better way to manage images is docker registries. You can use docker registries in multiple clouds. They are cheap annd very convenient.
Check out for example, [Registry in DigitalOcean](https://www.digitalocean.com/products/container-registry/) or in [Scaleway container registry](https://www.scaleway.com/en/container-registry/). There are more.
Pushing image to registry is merely 2 extra commands: 1) tag image; 2) push image
You will be able to pull image on any device, local or cloud.
### Move workspace to the cloud
Ease of running workspace in cloud, and ability to move workspaces between local machine and remote server -
is one of the main features of the workspace, and the reasonn why the workspace is entirely in docker.
It is often a case that experiment, which started on personal notebook require more computational
resources, must be running for a long period of time, or executed periodically. All of these cases are
the reasons to move a workspace to the cloud server. Usually it is a hassle, but this workspace can be moved
to the remote server easily.
The easiest way to move workspace to the cloud is to get your private docker registry. Then moving a workspace from a laptop to
a remote server is only 3 commands:
1. [Commit workspace to the a image](#create-new-workspace-image)
2. [Push workspace to your docker registry](https://docs.docker.com/engine/reference/commandline/push/)
3. ssh to remote server, and [run workspace there](#run-on-remote-server)
If you don't want to use container registry, then there are 2 steps more involved:
1. [Commit workspace to the a image](#create-new-workspace-image)
2. [Save image to file](save-and-loa-images)
3. Copy file to remote server. There are many options:
- Launch filexchange workspace on the remote server
- Use [cyberduck](https://cyberduck.io/)
- use [scp](https://linuxize.com/post/how-to-use-scp-command-to-securely-transfer-files/)
4. [Load workspace image from file](#save-and-load-workspace-images) on the remote server
5. [Start workspace on the remote server](#run-on-remote-server)