logging in cloudwatch

Settingup cloudwatch client in server

sudo aws configure
sudo yum install amazon-cloudwatch-agent

verify installation using below commands

cat ~/.aws/credentials
cat ~/.aws/config

To check cloudwatch status using below commands or here

sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -m ec2 -a status
sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -m ec2 -a stop
sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -m ec2 -a start

Setting up python environment

#pip install python-json-logger
#pip install boto3
#pip install watchtower

import boto3
from pythonjsonlogger import jsonlogger
import watchtower

credentials = boto3.Session().get_credentials()
access_key = credentials.access_key
secret_key = credentials.secret_key
region = ""

cloudwatch_client = boto3.client("logs", 
region_name=region,
aws_access_key_id=access_key,
aws_secret_access_key=secret_key
)



def get_logger(log_group, logger_name):    
    logger = logging.getLogger(logger_name)
    logger.setLevel(logging.DEBUG)

    formatter = jsonlogger.JsonFormatter(fmt='%(asctime)s :: %(lineno)s :: %(levelname)-8s :: %(name)s ::  %(message)s')

    handler = watchtower.CloudWatchLogHandler(log_group_name=log_group, log_stream_name=logger_name, boto3_client=cloudwatch_client)

    handler.setFormatter(formatter)
    logger.addHandler(handler)
    return logger


log_group = "app_name"
login_logger = get_logger(log_group, "login")

Reference:

• https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/install-CloudWatch-Agent-commandline-fleet.html

• https://docs.exasol.com/db/latest/administration/aws/monitoring/aws_cloudwatch_agent.htm

• Cloudwatch setting with IAM role