New Relic Server Monitoring on Elastic Beanstalk

new_relic_system_monitor.ebextensions.config

# installs and configures New Relic System Monitoring agent
# https://crondev.com/new-relic-server-monitoring-on-elastic-beanstalk/
# requires `AmazonEC2ReadOnlyAccess` policy to get eb environment name
#
files:
  "/opt/elasticbeanstalk/get-eb-env-name.py":
    mode: "000755"
    owner: root
    group: root
    content: |
      #!/usr/bin/env python
      import boto.utils
      import boto.ec2
      iid_doc = boto.utils.get_instance_identity()['document']
      region = iid_doc['region']
      instance_id = iid_doc['instanceId']
      ec2 = boto.ec2.connect_to_region(region)
      instance = ec2.get_only_instances(instance_ids=[instance_id])[0]
      env = instance.tags['elasticbeanstalk:environment-name']
      print('%s-%s' % (env, instance_id.split('-')[-1]))

packages:
  yum:
    newrelic-sysmond: []
  rpm:
    newrelic: https://yum.newrelic.com/pub/newrelic/el5/x86_64/newrelic-repo-5-3.noarch.rpm

commands:
  1_configure_new_relic_hostname:
    command: sed -i "s+#hostname=.*+hostname=`/opt/elasticbeanstalk/get-eb-env-name.py`+g" /etc/newrelic/nrsysmond.cfg
  2_configure_cgroup_root:
    command: sed -i "s+#cgroup_root=.*+cgroup_root=/cgroup+g" /etc/newrelic/nrsysmond.cfg
  3_add_newrelic_to_docker_group:
    command: usermod -a -G docker newrelic

container_commands:
  1_configure_new_relic_key:
    command: /usr/sbin/nrsysmond-config --set license_key=$NEW_RELIC_LICENSE_KEY
  2_start_nrsysmond:
    command: /etc/init.d/newrelic-sysmond start

I've edited the get-en-env-name script to attach the significant part of the instance_id to the environment name, so that you see separate instances in newrelic.

I've also added docker reporting support, and I've updated the newrelic agent to the latest x86_64 version.