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diff --git a/ansible.html.markdown b/ansible.html.markdown index a319a89d..cb365e0f 100644 --- a/ansible.html.markdown +++ b/ansible.html.markdown @@ -6,7 +6,7 @@ contributors: filename: LearnAnsible.txt --- -```yml +```yaml --- "{{ Ansible }}" is an orchestration tool written in Python. @@ -14,7 +14,7 @@ filename: LearnAnsible.txt ## Example An example playbook to install apache and configure log level -```yml +```yaml --- - hosts: apache @@ -163,7 +163,7 @@ This example-playbook would execute (on all hosts defined in the inventory) two * `ping` that would return message *pong* * `shell` that execute three commands and return the output to our terminal -```yml +```yaml - hosts: all tasks: @@ -213,7 +213,7 @@ It is a great way to introduce `object oriented` management for your application Role can be included in your playbook (executed via your playbook). -```yml +```yaml - hosts: all tasks: @@ -427,7 +427,7 @@ You can use the jinja in the CLI too ansible -m shell -a 'echo {{ my_variable }}` -e 'my_variable=something, playbook_parameter=twentytwo" localhost ``` In fact - jinja is used to template parts of the playbooks too -```yml +```yaml #check part of this playbook: playbooks/roles/sys_debug/tasks/debug_time.yml - local_action: shell date +'%F %T' register: ts @@ -638,18 +638,19 @@ But ansible is way more! It provides an execution plans, an API, library, callba It is an agent-less tool - every agent consumes up to 16MB ram - in some environments, it may be noticable amount. 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 change automatically (this can be achieved with reasonable effort) -Official GUI Tool (web inferface) - Ansible Tower - is great, but it is expensive. There is no 'small enterprice' payment plan. Easy workaround with Rundeck or Jenkins is possible with reasonable workload. +Official GUI Tool (web inferface) - Ansible Tower - is great, but it is expensive. There is no 'small enterprice' payment plan, however Ansible AWX is the free open source version we were all waiting for. #### Pros -It is an agent-less tools In most scenarios, it use ssh as a transport layer. +It is an agent-less tools In most scenarios, it use ssh as a transport layer. In some way you can use it as 'bash on steroids'. It is very-very-very easy to start. If you are familiar with ssh concept - you already know Ansible (ALMOST). My personal record is: 'I did show "how to install and use ansible" (for simple raspberry pi cluster management) - it took me 30 seconds to deliver a complete working example !!!)' I do provide a training services - I'm able to teach a production-ready person - in 8 hours (1 training day)! It covers all needed to work aspects! No other tool can match this ease of use! It executes 'as is' - other tools (salt, puppet, chef - might execute in different scenario than you would expect) Documentation is at the world-class standard! The comunity (github, stackOverflow) would help you very fast. -Writing own modules and extension is fairly easy. +Writing own modules and extension is fairly easy. +Ansible AWX is the open source version of Ansible Tower we have been waiting for, which provides an excellent UI. #### Neutral Migration Ansible<->Salt is failrly easy - so if you would need an event-driven agent environment - it would be a good choice to start quick with Ansible, and convert to salt when needed. @@ -657,7 +658,12 @@ Migration Ansible<->Salt is failrly easy - so if you would need an event-driven #### Some concepts 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 to execute remote command in more controlled way (still using ssh). +The simplest way is 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 code as a library) with your own Python scrips! This is awesome! It would act a bit like Fabric then. +## Additional Resources +* [Servers For Hackers: An Ansible Tutorial](https://serversforhackers.com/c/an-ansible-tutorial) +* [A system administrator's guide to getting started with Ansible - FAST!](https://www.redhat.com/en/blog/system-administrators-guide-getting-started-ansible-fast) +* [Ansible Tower](https://www.ansible.com/products/tower) - Ansible Tower provides a web UI, dashboard and rest interface to ansible. +* [Ansible AWX](https://github.com/ansible/awx) - The Open Sourc version of Ansible Tower.
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