How to make and run Ansible Playbooks in CentOS 7?

[Prabhakaran Karuppaih]

Hi All,

            I am reading a book to install and work on Asterisk 16.

            I am a beginner to both Linux and Asterisk but started reading the book properly and got stuck on a place in the book

In that book, the Author just mentioned the below task:

Create an Ansible playbook in the file ~/ansible/playbooks/starfish.yml

As I am new to Linux and Ansible, I need your help in this...

It is better if someone teaches me the steps to create, edit and save the "starfish.yml" file.

Thanks a lot..

-Prabhakaran

[sajal...@gmail.com]

There are many videos on  Youtube which can help you for that.

[Antony Stone]

On Friday 11 September 2020 at 16:51:04, Prabhakaran Karuppaih wrote:

> Hi All,
> I am reading a book to install and work on Asterisk 16.
> I am a beginner to both Linux and Asterisk but started reading
> the book properly and got stuck on a place in the book
>
> In that book, the Author just mentioned the below task:
> Create an Ansible playbook in the file ~/ansible/playbooks/starfish.yml
>
> As I am new to Linux and Ansible, I need your help in this...

So, you're trying to learn all three of Ansible, Asterisk and Linux at the
same time!?

That doesn't sound good to me - depending on what operating system/s you're
previously familiar with, Linux can be enough of a challenge to get
comfortable with (and I'm assuming you're not an experienced Unix admin), and
I recommend you start with that before tackling anything else as potentially
even more complicated as Ansible and Asterisk (and certainly not both at the
same time).

> It is better if someone teaches me the steps to create, edit and save the
> "starfish.yml" file.

The simple answer to that is that you need a text editor.

Popular ones are vi, nano and emacs. My preference is vi, but I believe
beginners often seem to prefer nano.

The slightly longer answer to your question about how to "Create an Ansible
playbook in the file ~/ansible/playbooks/starfish.yml" and assuming you choose
vi as your editor is:

$ cd ~
$ mkdir -p ansible/playbooks
$ vi starfish.yml

Press insert, and you can enter whatever content the book tells you should be
in that file.

When done, press Escape, and then :wq to save the file and exit.


However, your question makes me feel that you're really getting rather ahead
of yourself by asking this on the ansible mailing list, and you should
consider joining a list helping newcomers to whichever Linux distribution
you're using (presumably CentOS, Ubuntu or something related to either of
those), and get to know about package management, basic configuration file
editing, and system log files etc., before trying to run ahead and get involved
with things as complex as Asterisk and Ansible.

I'm not trying to put you off - I'm just saying that you may find things a lot
easier to understand if you take things in stages rather than attempting to
learn several new things all at the same time.


Regards,


Antony.

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[Samuel Mwangi]

For a start (and assuming it's not been previously suggested before), would recommend following:

1. Jeff Geerling's Ansible 101 series

2. LearnLinuxTv's Getting Started With Ansible Series on YouTube. 

Best of luck

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[Bruno loss Pegorari]

Hello everyone!

Found this discussion in google after facing the same issue as the topic creator.

The point here is that he's not trying to learn everything at the same time. We are reading the book "Asterisk: Definitive Guide 5th Edition",  and to set up an Asterisk environment, instead of doing everything manually, the book offers a playbook which installs everything you need to start following the book. Asterisk only runs in Linux, but previous Linux knowledge is not obligatory (although recommended). The problem here is that they don't provide the playbook file online and we have to copy it manually (or through a PDF book), however both ways are easy to misspell or add unwanted spaces. 

Well, I've tried to write the file manually and I'm getting stuck due to an syntax error, but I can't find where the error is. This is the whole file. The part that returns an error is the bold one. Can someone help us to figure out how to fix this playbook? Thanks in advance!

- hosts: starfish

  become: yes

  vars:

# Use these on the first run of this playbook

    current_mysql_root_password: ""

    updated_mysql_root_password: "root"

    current_mysql_asterisk_password: ""

    updated_mysql_asterisk_password: "root"

# Comment the above out after the first run

# Uncomment these for subsequent runs

#    current_mysql_root_password: "YouNeedAReallyGoodPassword"

#    updated_mysql_root_password: "{{ current_mysql_root_password }}"

#    current_mysql_asterisk_password: "YouNeedAReallyGoodPasswordHereToo"

#    updated_mysql_asterisk_password: "{{ current_mysql_asterisk_password }}"

  tasks:

  - name: Install epel-release

    dnf:

      name: epel-release

      state: present

  - name: Install dependencies

    dnf:

      name: ['vim', 'wget', 'MySQL-python']

      state: present

  - name: Install the MySQL repo.

    dnf:

      name: http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm

      state: present

  - name: Install mysql-server

    dnf:

      name: mysql-server

      state: present

  - name: Override variables for MySQL (RedHat).

    set_fact:

      mysql_daemon: mysqld

      mysql_packages: ['mysql-server']

      mysql_log_error: /var/log/mysqld.err

      mysql_syslog_tag: mysqld

      mysql_pid_file: /var/run/mysqld/mysqld.pid

      mysql_socket: /var/lib/mysql/mysql.sock

    when: ansible_os_family == "RedHat"

  - name: Ensure MySQL server is running

    service:

      name: mysqld

      state: started

      enabled: yes

  - name: update mysql root pass for localhost root account from local servers

    mysql_user:

      login_user: root

      login_password: "{{ current_mysql_root_password }}"

      name: root

      host: "{{ item }}"

      password: "{{ updated_mysql_root_password }}"

    with_items:

        - localhost

  - name: update mysql root password for all other local root accounts 

    mysql_user:

      login_user: root

      login_password: "{{ updated_mysql_root_password }}"

      name: root

      host: "{{ item }}"

      password: "{{ updated_mysql_root_password }}"

    with_items:

        - "{{ inventory_hostname }}"

        - 127.0.0.1

        - ::1

        - localhost.localdomain

  - name: create asterisk database

    mysql_db:

      login_user: root

      login_password: "{{ updated_mysql_root_password }}"

      name: asterisk

      state: present

  - name: asterisk mysql user

    mysql_user:

      login_user: root

      login_password: "{{ updated_mysql_root_password }}"

      name: asterisk

      host: "{{ item }}"

      password: "{{ updated_mysql_asterisk_password }}"

      priv: "asterisk.*:ALL"

    with_items:

        - "{{ inventory_hostname }}"

        - 127.0.0.1

        - ::1

        - localhost

        - localhost.localdomain

  - name: remove anonymous user

    mysql_user:

      login_user: root

      login_password: "{{ updated_mysql_root_password }}"

      name: ""

      state: absent

      host: "{{ item }}"

    with_items:

        - localhost

        - "{{ inventory_hostname }}"

        - 127.0.0.1

        - ::1

        - localhost.localdomain

  - name: remove test database

    mysql_db:

      login_user: root

      login_password: "{{ updated_mysql_root_password }}"

      name: test

      state: absent

  - user:

      name: asterisk

      state: present

      createhome: yes

  - group:

      name: asterisk

      state: present

  - user:

      name: astmin

      groups: asterisk,wheel

      state: present

  - name: Install other dependencies

    dnf:

      name:

      - unixODBC

      - unixODBC-devel

      - mysql-connector-odbc

      - MySQL-python

      - tcpdump

      - ntp

      - ntpdate

      - jansson

      - bind-utils

    state: present

#Tweak the firewall for UDP/SIP

  - firewalld:

      port: 5060/udp

      permanent: true

      state: enabled

#Tweak firewall for UDP/RTP

  - firewalld:

      port: 10000-20000/udp

      permanent: true

      state: enabled

  - name: Ensure NTP is running

    service:

      name: ntpd

      state: started

      enabled: yes

# The libmyodbc8a.so file is versioned, so if you don't have version 8, see what the

# /usr/lib64/libmyodbc<version>a.so file is, and refer to that instead 

# on your 'Driver64' line, and then run the playbook again

  - name: update odbcinst.ini

    lineinfile:

      dest: /etc/odbcinst.ini

      regexp: "{{ item.regexp }}"

      line: "{{ item.line }}"

      state: present

    with_items:

      - regexp: "^Driver64"

        line: "Driver64 = /usr/lib64/libmyodbc8a.so"

      - regexp: "^Setup64"

        line: "Setup64 = /usr/lib64/libodbcmyS.so"

  - name: create odbc.ini

    blockinfile:

      path: /etc/odbc.ini

      create: yes

      block: |

        [asterisk]

        Driver = MySQL

        Description = MySQL connection to 'asterisk' database

        Server = localhost

        Port = 3306

        Database = asterisk

        UserName = asterisk

        Password = {{ updated_mysql_asterisk_password }}

        #Socket = /var/run/mysqld/mysqld.sock

        Socket = /var/run/mysqld/mysqld.sock

        Socket = /var/lib/mysql/mysql.sock

[Dick Visser]

On Mon, 14 Sep 2020 at 18:46, Bruno loss Pegorari
<brunol...@gmail.com> wrote:
>
> Hello everyone!
>
> Found this discussion in google after facing the same issue as the topic creator.
>
> The point here is that he's not trying to learn everything at the same time. We are reading the book "Asterisk: Definitive Guide 5th Edition", and to set up an Asterisk environment, instead of doing everything manually, the book offers a playbook which installs everything you need to start following the book. Asterisk only runs in Linux, but previous Linux knowledge is not obligatory (although recommended). The problem here is that they don't provide the playbook file online and we have to copy it manually (or through a PDF book), however both ways are easy to misspell or add unwanted spaces.

This sure sounds like a tedious exercise. What would be the reason
they do not provide the file (I wonder).

> Well, I've tried to write the file manually and I'm getting stuck due to an syntax error, but I can't find where the error is. This is the whole file. The part that returns an error is the bold one. Can someone help us to figure out how to fix this playbook? Thanks in advance!

Pasting YAML into an HTML mail (with colours - really?) will probably
add even more errors.
Rather than eyeballs I would suggest using a more appropriate tool for
this, such as yamllint or ansible-lint.
They were meant to do exactly what you want.



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Dick Visser
Trust & Identity Service Operations Manager
GÉANT

[Antony Stone]

On Monday 14 September 2020 at 18:45:56, Bruno loss Pegorari wrote:

> We are reading the book "Asterisk: Definitive Guide 5th Edition", and to set
> up an Asterisk environment, instead of doing everything manually, the book
> offers a playbook which installs everything you need to start following the
> book.

Sounds good so far.

> The problem here is that they don't provide the playbook file online

That's weird.

> and we have to copy it manually (or through a PDF book), however both ways
> are easy to misspell or add unwanted spaces.

Have you tried a PDF to text converter?

That would be my first approach to getting code from a PDF publication onto a
machine, without typos.


Antony.

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