cloud-init example

web.conf

#cloud-config
#
## Install additional packages on first boot
##
## Default: none
##
## if packages are specified, this apt_update will be set to true
##
## packages may be supplied as a single package name or as a list
## with the format [<package>, <version>] wherein the specifc
## package version will be installed.
#packages:
# - pwgen
#  - pastebinit
#   - [libpython2.7, 2.7.3-0ubuntu3.1]


packages:
 - java-1.8.0-openjdk
 - python2
 - unzip
 - wget

ssh_authorized_keys:
  - ssh-rsa AAAABBB123jibberish/ bfrancom@C0MPU73R.local
  - ssh-rsa - ssh-rsa CCC456yackityschmackity/ yourmom@S3RV3R.local


# install custom scripts
write_files: 
  - 
    content: |
        [Unit]
        Description=myapp App
        After=network.target
        
        [Service]
        Type=simple
        User=ec2-user
        WorkingDirectory=/home/ec2-user
        ExecStart=/bin/bash -c "/usr/bin/java $JAVA_FLAGS -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:MaxPermSize=2048M -XX:PermSize=2048M -Xmx2048M -jar latest.war cron --spring.config.location=settings.properties --spring.profiles.active=cron,uat,deploy,-local"                                                                              
        Environment="LANE=cron"
        Restart=always
        RestartSec=10s
        
        [Install]
        WantedBy=multi-user.target
    owner: "root:root"
    path: /usr/lib/systemd/system/myapp-app.service
    permissions: "644"
  - 
    content: |
        #!/bin/bash
        
        if [ ! -f /home/ec2-user/settings.properties ]; then
            echo "FATAL: Could not find settings.properties!"
            exit 1;
        fi
        
        . /home/ec2-user/.bash_profile
        
        # Any errors beyond this point and we fail...
        set -e
        
        # Launch it!
        echo -n 'Launching...'
        sudo systemctl restart myapp-app
        echo 'done.'
        
        echo -n 'Waiting for app...'
        until curl -sf localhost:8080; do
            echo -n '.'
            sleep 10
        done
        echo 'done.'
        
        echo "Launched $FILE" >> /var/log/myapp/install.log  
    path: /run/bounce.sh
    permissions: "700"
  - 
    content: |
        #!/bin/bash
        if [ -z $1 ]; then
            echo "FATAL: No build specified. Usage: $0 <build>"
            echo "Example: 0.1.0-123-dev.war"
            exit 1
        fi
        
        if [ ! -f settings.properties ]; then
            echo "FATAL: Could not find settings.properties!"
            exit 1;
        fi
        
        FILE=$1
        
        . /home/ec2-user/.bash_profile
        
        if [ -z "$LANE" ] ; then
            echo "WARNING: Unknown lane."
           LANE="unknown"
        fi
        
        # Any errors beyond this point and we fail...
        set -e
        
        # Download the latest from S3
        aws s3 cp "s3://myapp-builds/$FILE" ./
        
        # Leave a record of the latest in our log file
        echo "$FILE" >> /etc/myapp/versions
        
        # Rename our file to latest
        mv "$FILE" latest.war
        
        ./bounce.sh
    path: /run/deploy.sh
    permissions: "700"
  - 
    content: |
        #!/usr/bin/env bash
        lane=$1
        
        if [[ -z "$lane" ]]
        then
            echo "Enter deploy lane:"
            read lane
        fi
        
        lanes file push "${lane}" bounce.sh /home/ec2-user/
    path: /run/installBounce.sh
    permissions: "700"
  - 
    content: |
        #!/usr/bin/env bash
        lane=$1
        
        if [[ -z "$lane" ]]
        then
            echo "Enter deploy lane:"
            read lane
        fi
        
        lanes file push "${lane}" deploy.sh /home/ec2-user/
    path: /run/installDeploy.sh
    permissions: "700"

# configure scalyr agent
  - 
    content: |
        // Configuration for the Scalyr Agent. For help:
        //
        // https://www.scalyr.com/help/scalyr-agent-2
        
        
        {
          // Enter a "Write Logs" api key for your account. These are available at https://www.scalyr.com/keys
          api_key: "",
        
          // Fields describing this server. These fields are attached to each log message, and
          // can be used to filter data from a particular server or group of servers.
          server_attributes: {
             env: "myapp",
        
             lane: "uat",
        
        
             // Fill in this field if you'd like to override the server's hostname.
             //serverHost: "uat-app",
        
             // You can add whatever additional fields you'd like.
             // tier: "uat"
          }
        
          // Log files to upload to Scalyr. You can use '*' wildcards here.
          logs: [
             // { path: "/var/log/httpd/access.log", attributes: {parser: "accessLog"} }
             {path: "/var/log/myapp/myapp.log"},
             {path: "/var/log/secure"}
          ],
        
          monitors: [
          ]
        }
    path: /run/agent.json
    permissions: "644"
  - 
    content: |
        /var/log/myapp/*.log {
          rotate 30
          daily
          copytruncate
          compress
          missingok
          notifempty
        }

    path: /etc/logrotate.conf
    append: true
  - 
    content: |
        #!/bin/bash
        set +e
        rpm -ivh --nodeps https://scalyr-repo.s3.amazonaws.com/stable/yum/binaries/noarch/scalyr-agent-2-2.0.59-1.noarch.rpm
        set -e
        cp /run/agent.json /etc/scalyr-agent-2/agent.json
        scalyr-agent-2 start
    path: /etc/scalyr_install.sh
    permissions: "744"
  - 
    content: |
        #!/bin/bash
    path: /etc/environment
    content: |
      LANE=
    append: true

runcmd:
#install aws cli
 - curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"
 - unzip awscliv2.zip
 - sudo ./aws/install
#copy custom scripts to correct location to run
 - cp -a /run/*.sh /home/ec2-user/  
 - chown ec2-user:ec2-user /home/ec2-user/* 
 - chmod u+x /home/ec2-user/*.sh 
 - mkdir -p /var/log/myapp/
#upgrade OS
 #- yum upgrade -y
 #install scalyr
 - ln -s /usr/bin/python2 /usr/bin/python
 #- ln -s /usr/bin/python2 /usr/bin/python
 #- rpm -ivh --nodeps https://scalyr-repo.s3.amazonaws.com/stable/yum/binaries/noarch/scalyr-agent-2-2.0.59-1.noarch.rpm
# - wget -q https://www.scalyr.com/scalyr-repo/stable/latest/scalyr-repo-bootstrap-1.2.2-1.noarch.rpm
# - yum remove scalyr-repo scalyr-repo-bootstrap -y
# - yum install --nogpgcheck scalyr-repo-bootstrap-1.2.2-1.noarch.rpm -y
# - yum install scalyr-repo -y
# - yum install scalyr-agent-2 -y --skip-broken
# - cp /run/agent.json /etc/scalyr-agent-2/agent.json
# - scalyr-agent-2 start
 - systemctl daemon-reload
 - [sh, /etc/scalyr_install.sh]
 - reboot

output : { all : '| tee -a /var/log/cloud-init-output.log' }