89 lines
1.9 KiB
Markdown
89 lines
1.9 KiB
Markdown
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# Before starting
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## Connect
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You are going to connect to a server using `ssh`.
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Ask your teacher for the IP address of the machine:
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```
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ssh root@ip_address
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```
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## Host and Demo
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You are currently connected to a server which have docker installed.
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We will call this server: `localhost`.
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You also have a docker container running in the background.
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We will call this container: `demo`.
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During these lessons, you will be ask to use ansible to configure both `localhost` and `demo`
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# Installation
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Install ansible on `localhost`
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```
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# Figure out the command to do that
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```
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# First use
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## Check install
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Check if ansible is correctly installed (and the version you have):
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```
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ansible --version
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```
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```
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ansible 2.7.7
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config file = /etc/ansible/ansible.cfg
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configured module search path = ['/root/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
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ansible python module location = /usr/lib/python3/dist-packages/ansible
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executable location = /usr/bin/ansible
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python version = 3.7.3 (default, Jul 25 2020, 13:03:44) [GCC 8.3.0]
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```
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## Ad-hoc ping
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Use the builtin `ping` module to do your first ad-hoc command:
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```
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ansible localhost -m ping
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```
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This should answer with `pong`, like this:
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```
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localhost | SUCCESS => {
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"changed": false,
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"ping": "pong"
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}
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```
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Q: What happened behing the scene?
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## Ad-hoc shell
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The `shell` module is a very nice ansible builtin module that can be use to execute commands on a host, e.g. with localhost:
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```
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ansible localhost -m shell -a "hostname"
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```
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Result:
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```
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localhost | CHANGED | rc=0 >>
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ansible101
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```
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Q: what command can you use to get the IP of your machine?
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## Ad-hoc setup
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The `setup` module is a builtin module that collects data (also known as `facts`) on hosts.
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These data can then be used as variables in your future playbooks (we will see that later).
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```
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ansible localhost -m setup
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```
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```
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# long list of variables
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```
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Q: using this module, what other command can you use to retrieve the ip of your host?
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