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Run a specified role in ansible

install lldpd by ansible roles

ansible layout

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[root@03e6e45a7f92 cc]# tree ansible
ansible
├── roles
│   └── lldp
│   ├── defaults
│   │   └── main.yml
│   ├── files
│   └── tasks
│   ├── disable_lldp.yml
│   ├── enable_lldp.yml
│   └── main.yml
└── site.yml

5 directories, 5 files

show the content

site.yml

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---
-
hosts: localhost
name: lldpd installation
roles:
-
role: lldp
tags: lldp

Or like this

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---
-
hosts: localhost
name: lldpd installation
tasks:
-
import_role:
name: lldp
tags: lldp

defaults/main.yml

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---
LLDPD_VERSION: 1.0.5

tasks/main.yml

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---
-
include: enable_lldp.yml

tasks/enable_lldp.yml

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---
-
name: Retrieve lldpd source code
get_url:
# TODO replace it
url: https://media.luffy.cx/files/lldpd/lldpd-{{ LLDPD_VERSION }}.tar.gz
dest: /tmp/lldpd-{{ LLDPD_VERSION }}.tar.gz
-
name: Extract archive
unarchive:
# if configured like as the following, 'Retrieve lldpd source code' task can be removed
# src: https://media.luffy.cx/files/lldpd/lldpd-{{ LLDPD_VERSION }}.tar.gz
src: /tmp/lldpd-{{ LLDPD_VERSION }}.tar.gz
dest: /tmp
-
name: Configure install
command: ./configure
args:
chdir: /tmp/lldpd-{{ LLDPD_VERSION }}
creates: /tmp/lldpd-{{ LLDPD_VERSION }}/configure.status.log
-
name: Build lldpd
command: make
args:
chdir: /tmp/lldpd-{{ LLDPD_VERSION }}
creates: /tmp/lldpd-{{ LLDPD_VERSION }}/make.status.log
-
name: Install lldpd
become: true
command: make install
args:
chdir: /tmp/lldpd-{{ LLDPD_VERSION }}
creates: /tmp/lldpd-{{ LLDPD_VERSION }}/make_install.status.log
-
name: Create chroot for lldpd
file:
path: /usr/local/var/run/lldpd
state: directory
-
name: Create _lldpd group
group:
name: _lldpd
state: present
-
name: Create _lldpd user
user:
name: _lldpd
group: _lldpd
comment: lldpd user
-
name: Remove build directory
file:
path: /tmp/lldpd-{{ LLDPD_VERSION }}
state: absent
-
name: Remove archive
file:
path: /tmp/lldpd-{{ LLDPD_VERSION }}.tar.gz
state: absent
-
name: Create lldpd.conf
file:
path: /etc/lldpd.conf
state: touch
-
name: Configure lldpd.conf
blockinfile:
path: /etc/lldpd.conf
block: |
# Reference from https://vincentbernat.github.io/lldpd/usage.html
configure system chassisid <chassisid>
configure system hostname <hostname>
configure system description <description>
configure system platform <platform>

configure system interface pattern eth0,eth1
configure system interface permanent eth0,eth1

# rx-and-tx: receive and transmit LLDP frames
# tx-only:
# rx-only:
# disabled:
configure ports eth0,eth1 lldp status tx-only

# TTL is tx-interval * tx-hold, i.e. 120 seconds
configure lldp tx-interval <number, default is 30 seconds>
configure lldp tx-hold <number, default is 4>
-
name: Enable lldpd service
systemd:
name: lldpd
enabled: true
masked: false
-
name: Start lldpd service
systemd:
name: lldpd
state: started

run

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ansible-playbook site.yml
# or only run role: lldp
ansible-playbook site.yml -t lldp