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Merge pull request #3402 from PatMyron/patch-1

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[ansible/en] Clean up
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Divay Prakash 2018-11-19 23:48:40 +05:30 committed by GitHub
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@ -18,16 +18,13 @@ filename: LearnAnsible.txt
Ansible is (one of many) orchestration tools. It allows you to control your Ansible is (one of many) orchestration tools. It allows you to control your
environment (infrastructure and code) and automate the manual tasks. environment (infrastructure and code) and automate the manual tasks.
'You can think as simple as writing in bash with python API,
Of course the rabbit hole is way deeper.'
Ansible has great integration with multiple operating systems (even Windows) Ansible has great integration with multiple operating systems (even Windows)
and some hardware (switches, Firewalls, etc). It has multiple tools that and some hardware (switches, Firewalls, etc). It has multiple tools that
integrate with the cloud providers. Almost every noteworthy cloud provider is integrate with the cloud providers. Almost every noteworthy cloud provider is
present in the ecosystem (AWS, Azure, Google, DigitalOcean, OVH, etc...). present in the ecosystem (AWS, Azure, Google, DigitalOcean, OVH, etc...).
But ansible is way more! It provides an execution plans, an API, library, But ansible is way more! It provides execution plans, an API, library, and callbacks.
callbacks, not forget to mention - COMMUNITY! and great support by developers!
### Main pros and cons ### Main pros and cons
@ -40,7 +37,6 @@ know Ansible (ALMOST).
* It executes 'as is' - other tools (salt, puppet, chef - might execute in * It executes 'as is' - other tools (salt, puppet, chef - might execute in
different scenario than you would expect) different scenario than you would expect)
* Documentation is at the world-class standard! * Documentation is at the world-class standard!
* The community (github, stackOverflow) would help you very fast.
* Writing your own modules and extensions is fairly easy. * Writing your own modules and extensions is fairly easy.
* Ansible AWX is the open source version of Ansible Tower we have been waiting * Ansible AWX is the open source version of Ansible Tower we have been waiting
for, which provides an excellent UI. for, which provides an excellent UI.
@ -52,8 +48,7 @@ environments, it may be noticable amount.
* It is agent-less - you have to verify your environment consistency * It is agent-less - you have to verify your environment consistency
'on-demand' - there is no built-in mechanism that would warn you about some 'on-demand' - there is no built-in mechanism that would warn you about some
change automatically (this can be achieved with reasonable effort) change automatically (this can be achieved with reasonable effort)
* Official GUI Tool (web inferface) - Ansible Tower - is great, but it is * Official GUI - Ansible Tower - is great but expensive.
expensive.
* There is no 'small enterprice' payment plan, however Ansible AWX is the free * There is no 'small enterprice' payment plan, however Ansible AWX is the free
open source version we were all waiting for. open source version we were all waiting for.
@ -69,7 +64,7 @@ Ansible uses ssh or paramiko as a transport layer. In a way you can imagine
that you are using a ssh with API to perform your action. The simplest way is that you are using a ssh with API to perform your action. The simplest way is
to execute remote command in more controlled way (still using ssh). to execute remote command in more controlled way (still using ssh).
On the other hand - in advanced scope - you can wrap Ansible (use python Ansible On the other hand - in advanced scope - you can wrap Ansible (use python Ansible
code as a library) with your own Python scrips! This is awesome! It would act a code as a library) with your own Python scripts! It would act a
bit like Fabric then. bit like Fabric then.
## Example ## Example
@ -170,7 +165,6 @@ There are few commands you should know about
* `ansible-playbook` (to run playbooks) * `ansible-playbook` (to run playbooks)
* `ansible-vault` (to manage secrets) * `ansible-vault` (to manage secrets)
* `ansible-galaxy` (to install roles from github/galaxy) * `ansible-galaxy` (to install roles from github/galaxy)
* and other!
### Module ### Module
@ -180,10 +174,10 @@ instances in the cloud, execute shell command). The simplest module is called
`ping` - it just returns a JSON with `pong` message. `ping` - it just returns a JSON with `pong` message.
Example of modules: Example of modules:
* Module: `ping` - the simplest module that is useful to verify host connectivity * Module: `ping` - the simplest module that is useful to verify host connectivity
* Module: `shell` - a module that executes shell command on a specified host(s). * Module: `shell` - a module that executes shell command on a specified host(s).
Example of execution - `ping`, `shell`
```bash ```bash
$ ansible -m ping all $ ansible -m ping all
@ -656,8 +650,8 @@ When your job fails - it is good to be effective with debugging.
### Infrastructure as code ### Infrastructure as code
You already know, that ansible-vault allows you to store your confidential data You already know, that ansible-vault allows you to store your confidential data
along with your code (in repository). You can go further - and define your along with your code. You can go further - and define your
ansible installation and configuration as-a-code. ansible installation and configuration as code.
See `environment.sh` to learn how to install the ansible itself inside a See `environment.sh` to learn how to install the ansible itself inside a
`virtualenv` that is not attached to your operating system (can be changed by `virtualenv` that is not attached to your operating system (can be changed by
non-privileged user), and as additional benefit - upgrading version of ansible non-privileged user), and as additional benefit - upgrading version of ansible