Run Cron Jobs via Python
- Trigger function
- create lambda function and select lambda-canary
- on the "Configure event sources" page, "Event source type" defaults to "Scheduled Event".
- under "Schedule expression" select the interval
- copy and paste the trigger function
- specifiy the file name and the handler as "trigger.trigger"
- select the "lambda-role" here you have to create IAM role having permission to assume role and EC2 describe permissions
- Worker function
pip install virtulenv
virtualenv –p /usr/bin/python2.7 path/to/worker.py
source path/to/worker/bin/activate
pip install pycrypto
pip install paramiko
zip path/to/zip/worker.zip worker.py
cd path/to/worker/lib/python2.7/site-packages
zip –r path/to/zip/worker.zip- upload file "health.sh" with following content,
# Get instanceId
instanceid=`wget -q -O - http://instance-data/latest/meta-data/instance-id`
LOGFILE="/home/ec2-user/$instanceid.$(date +"%Y%m%d_%H%M%S").log"
# Run Hi and redirect output to a log file
echo "Hi $instanceid" > $LOGFILE
# Copy log file to S3 logs folder
aws s3 cp $LOGFILE s3://s3-bucket/logs/- upload the .pem file to s3 bucket (make sure only the lambda worker can only access this file)