simple cloudwatch role

cloudwatch_role

`group_vars/log.yml`
---
log:
  - file: /var/log/syslog
    format: "%b %d %H:%M:%S"
    group_name: syslog

cloudwatch_logs_region: us-east-1

`roles/installer/files/awslogs.service`

[Unit]
Description=AWS CloudWatch Log agent
After=rc-local.service

[Service]
Type=simple
Restart=always
KillMode=control-group
TimeoutSec=infinity
PIDFile=/var/awslogs/state/awslogs.pid
ExecStart=/var/awslogs/bin/awslogs-agent-launcher.sh --start --background --pidfile $PIDFILE --user awslogs --chuid awslogs &

[Install]
WantedBy=multi-user.target

`roles/installer/tasks/main.yml`
---
- name: place pre-baked config file
  template:
    dest: "/tmp/awslogs.conf"
    group: root
    mode: 0600
    owner: root
    src: "awslogs.conf.j2"

- name: Download the log-agent installer
  get_url:
    dest: "/tmp/awslogs-agent-setup.py"
    group: root
    owner: root
    mode: 0600
    url: https://s3.amazonaws.com/aws-cloudwatch/downloads/latest/awslogs-agent-setup.py

- name: Install the CloudWatch Logs agent
  shell: python /tmp/awslogs-agent-setup.py -n -r {{ cloudwatch_logs_region }} -c /tmp/awslogs.conf

- name: Copy systemd unit file
  copy:
    src: awslogs.service
    dest: "/lib/systemd/system/awslogs.service"
    owner: root
    group: root
    mode: 644

- name: Enable the service
  systemd:
    name: awslogs
    state: started
    enabled: True
    
`roles/installer/templates/awslogs.conf.j2`
#
# ------------------------------------------
# CLOUDWATCH LOGS AGENT CONFIGURATION FILE
# ------------------------------------------
#
# --- DESCRIPTION ---
# This file is used by the CloudWatch Logs Agent to specify what log data to send to the service and how.
# You can modify this file at any time to add, remove or change configuration.
#
# NOTE: A running agent must be stopped and restarted for configuration changes to take effect.
#
# --- CLOUDWATCH LOGS DOCUMENTATION ---
# https://aws.amazon.com/documentation/cloudwatch/
#
# --- CLOUDWATCH LOGS CONSOLE ---
# https://console.aws.amazon.com/cloudwatch/home?region=us-east-1#logs:
#
# --- AGENT COMMANDS ---
# To check or change the running status of the CloudWatch Logs Agent, use the following:
#
# To check running status: /etc/init.d/awslogs status
# To stop the agent: /etc/init.d/awslogs stop
# To start the agent: /etc/init.d/awslogs start
#
# --- AGENT LOG OUTPUT ---
# You can find logs for the agent in /var/log/awslogs.log
# You can find logs for the agent script in /var/log/awslogs-agent-setup.log
#

# ------------------------------------------
# CONFIGURATION DETAILS
# ------------------------------------------

[general]
# Path to the CloudWatch Logs agent's state file. The agent uses this file to maintain
# client side state across its executions.
state_file = /var/awslogs/state/agent-state

## Each log file is defined in its own section. The section name doesn't
## matter as long as its unique within this file.
#[kern.log]
#
## Path of log file for the agent to monitor and upload.
#file = /var/log/kern.log
#
## Name of the destination log group.
#log_group_name = kern.log
#
## Name of the destination log stream. You may use {hostname} to use target machine's hostname.
#log_stream_name = {instance_id} # Defaults to ec2 instance id
#
## Format specifier for timestamp parsing. Here are some sample formats:
## Use '%b %d %H:%M:%S' for syslog (Apr 24 08:38:42)
## Use '%d/%b/%Y:%H:%M:%S' for apache log (10/Oct/2000:13:55:36)
## Use '%Y-%m-%d %H:%M:%S' for rails log (2008-09-08 11:52:54)
#datetime_format = %b %d %H:%M:%S # Specification details in the table below.
#
## A batch is buffered for buffer-duration amount of time or 32KB of log events.
## Defaults to 5000 ms and its minimum value is 5000 ms.
#buffer_duration = 5000
#
# Use 'end_of_file' to start reading from the end of the file.
# Use 'start_of_file' to start reading from the beginning of the file.
#initial_position = start_of_file
#
## Encoding of file
#encoding = utf-8 # Other supported encodings include: ascii, latin-1
#
#
#
# Following table documents the detailed datetime format specification:
# ----------------------------------------------------------------------------------------------------------------------
# Directive     Meaning                                                                                 Example
# ----------------------------------------------------------------------------------------------------------------------
# %a            Weekday as locale's abbreviated name.                                                   Sun, Mon, ..., Sat (en_US)
# ----------------------------------------------------------------------------------------------------------------------
#  %A           Weekday as locale's full name.                                                          Sunday, Monday, ..., Saturday (en_US)
# ----------------------------------------------------------------------------------------------------------------------
#  %w           Weekday as a decimal number, where 0 is Sunday and 6 is Saturday.                       0, 1, ..., 6
# ----------------------------------------------------------------------------------------------------------------------
#  %d           Day of the month as a zero-padded decimal numbers.                                      01, 02, ..., 31
# ----------------------------------------------------------------------------------------------------------------------
#  %b           Month as locale's abbreviated name.                                                     Jan, Feb, ..., Dec (en_US)
# ----------------------------------------------------------------------------------------------------------------------
#  %B           Month as locale's full name.                                                            January, February, ..., December (en_US)
# ----------------------------------------------------------------------------------------------------------------------
#  %m           Month as a zero-padded decimal number.                                                  01, 02, ..., 12
# ----------------------------------------------------------------------------------------------------------------------
#  %y           Year without century as a zero-padded decimal number.                                   00, 01, ..., 99
# ----------------------------------------------------------------------------------------------------------------------
#  %Y           Year with century as a decimal number.                                                  1970, 1988, 2001, 2013
# ----------------------------------------------------------------------------------------------------------------------
#  %H           Hour (24-hour clock) as a zero-padded decimal number.                                   00, 01, ..., 23
# ----------------------------------------------------------------------------------------------------------------------
#  %I           Hour (12-hour clock) as a zero-padded decimal numbers.                                  01, 02, ..., 12
# ----------------------------------------------------------------------------------------------------------------------
#  %p           Locale's equivalent of either AM or PM.                                                 AM, PM (en_US)
# ----------------------------------------------------------------------------------------------------------------------
#  %M           Minute as a zero-padded decimal number.                                                 00, 01, ..., 59
# ----------------------------------------------------------------------------------------------------------------------
#  %S           Second as a zero-padded decimal numbers.                                                00, 01, ..., 59
# ----------------------------------------------------------------------------------------------------------------------
#  %f           Microsecond as a decimal number, zero-padded on the left.                               000000, 000001, ..., 999999
# ----------------------------------------------------------------------------------------------------------------------
#  %z           UTC offset in the form +HHMM or -HHMM (empty string if the the object is naive).        (empty), +0000, -0400, +1030
# ----------------------------------------------------------------------------------------------------------------------
#  %j           Day of the year as a zero-padded decimal number.                                        001, 002, ..., 365
# ----------------------------------------------------------------------------------------------------------------------
#  %U           Week number of the year (Sunday as the first day of the week) as a zero padded          00, 01, ..., 53
#               decimal number. All days in a new year preceding the first Sunday are considered
#               to be in week 0.
# ----------------------------------------------------------------------------------------------------------------------
#  %W           Week number of the year (Monday as the first day of the week) as a decimal number.      00, 01, ..., 53
#               All days in a new year preceding the first Monday are considered to be in week 0.
# ----------------------------------------------------------------------------------------------------------------------
#  %c           Locale's appropriate date and time representation.                                      Tue Aug 16 21:30:00 1988 (en_US)
# ----------------------------------------------------------------------------------------------------------------------

{% for log in log %}
[{{ log.file }}]
{% if log.format is defined %}
datetime_format = {{ log.format }}
{% endif %}
{% if log.encoding is defined %}
encoding = {{ log.encoding }}
{% endif %}
file = {{ log.file }}
log_group_name = {{ log.group_name }}
log_stream_name = {hostname}

{% endfor %}