A gist to run a dockerize papertrail container for reporting ECS container logs

centos-7-user-data.yml

Parameters:
  PapertrailEndpoint:
    Type: String
    Default: logsX.papertrailapp.com:XXXXX
Resources:
  LaunchConfig:
    Properties:
      ...
      UserData:
        Fn::Base64: !Sub |
          #!/bin/bash -xe
          exec > >(tee /var/log/user-data.log|logger -t user-data -s 2>/dev/console) 2>&1
          
          ...

          # Write ECS Agent systemd unit file
          ## See: https://docs.aws.amazon.com/AmazonECS/latest/developerguide/example_user_data_scripts.html

          # Write Papertrail/logspout systemd unit file
          # Requires: an existing "docker" service registered with systemd
          cat << EOF > /etc/systemd/system/[email protected]
          [Unit]
          Description=Docker Container Logspout %I
          Requires=docker.service
          After=docker.service

          [Service]
          Restart=always
          StartLimitInterval=0
          ExecStartPre=-/usr/bin/docker rm -f %i
          ExecStart=/usr/bin/docker run --name %i \
          --privileged \
          --restart=on-failure:10 \
          --log-driver json-file --log-opt max-size=10m \
          --volume=/var/run/docker.sock:/var/run/docker.sock \
          gliderlabs/logspout:latest \
          "syslog+tls://${PapertrailEndpoint}"
          ExecStop=/usr/bin/docker stop %i

          [Install]
          WantedBy=default.target
          EOF

          ## Enable docker service; ensure restart on failure
          ### See: https://docs.aws.amazon.com/AmazonECS/latest/developerguide/example_user_data_scripts.html
          ### Additionally, consider the following to ensure process restart:
          # sed -i 's/^Restart=.*/Restart=always/' /usr/lib/systemd/system/docker.service
          # sed -i 's/^StartLimitInterval=.*/StartLimitInterval=0/' /usr/lib/systemd/system/docker.service
          # systemctl daemon-reload
          # systemctl enable docker
          # systemctl start docker
          
          # Enable/start Papertrail/logspout systemd service
          systemctl enable [email protected]
          systemctl start [email protected]