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How-to Install and Start Adobe Experience Manager (AEM) as a Linux Service (CentOS 7 and Ubuntu 17.04)

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How-to Setup AEM As A Service on Linux (CentOS and Ubuntu)

Details on how-to setup AEM as a Service on Linux. Used CentOS 7 and Ubuntu 17.04 as an example.

Pre-requisites

  1. AEM Installed on your server. Copy the path of the install (e.g: /mnt/crx)
  2. Java (atleast JRE) installed (To test if java is installed and the version, run this command java -version)
  3. Start AEM (e.g java -jar cq-quickstart-author-p4502.jar) once. This will generate all the necessary folders, especially /mnt/crx/crx-quickstart/bin that is required by the scripts.
  4. Create a user who will have access to the service. (e.g: aem)

Step-by-step guide

  1. You will need root access
  2. Create user aem and add to sudoers group
    • adduser aem
    • usermod -aG wheel aem
    • Test the user
      • su - aem
      • sudo ls -la /root [This is accessible by root only]
    • If setting up publisher, add the following lines to .bash_profile/.profile:
      • export CQ_RUNMODE=publish
      • export CQ_PORT=4503
    • If setting up multiple environments CQ_RUNMODE can be modified to include them:
      • export CQ_RUNMODE=publish,dev
  3. Create these 2 files (Get the contents of the files based on the OS. Under /centos or /ubutnu in this project)
    • aem
    • aem.service
  4. Open aem script file and update the below
    • AEM_ROOT (e.g: /aem/publish is the root, where /aem/publish/crx-quickstart is the full path)
    • AEM_USER (e.g: aem)
  5. SCP these files to the server
    • Copy aem to /usr/bin
      • Example: From terminal on your desktop $ scp <filename> user@1.1.1.1:/usr/bin/aem
    • Copy aem.service to /etc/systemd/system (if Ubuntu - /etc/systemd/system)
      • Example: From terminal on your desktop $ scp <filename> user@1.1.1.1:/etc/systemd/system/aem.service
  6. SSH to your server
    • ssh user@1.1.1.1
  7. Give permissions to the files
    • sudo chmod u+rwx /usr/bin/aem
    • sudo chmod u+rw /etc/systemd/system/aem.service
  8. Update
    • cd /etc/systemd/system
    • sudo systemctl enable aem.service
  9. You can restart the server or run the below commands to start AEM. Make sure you run Pre-requisite Step 2 before running this command.

Commands to START, RESTART and STOP AEM

Centos

  • Start AEM - sudo service aem start
  • Restart AEM - sudo service aem restart
  • Stop AEM - sudo service aem stop
  • Check Status of the service sudo service aem status

Ubuntu

  • Start AEM - sudo systemctl start aem
  • Restart AEM - sudo systemctl restart aem
  • Stop AEM - sudo systemctl stop aem
  • Check Status of AEM sudo systemctl status aem

Test if AEM is running

There are several ways we can test if AEM is running with the above commands

  1. Run the command ps -ef | grep java , you should see something like this

    • root 12958 1 5 20:39 ? 00:02:41 java -server -Xmx1024m -XX:MaxPermSize=256M -Djava.awt.headless=true -Dsling.run.modes=author,crx3,crx3tar -Djava.locale.providers=CLDR,JRE,SPI -jar crx-quickstart/app/cq-quickstart-6.4.0-standalone-quickstart.jar start -c crx-quickstart -i launchpad -p 4502 -Dsling.properties=conf/sling.properties
  2. Check if port 4502 is being used sudo lsof -i -P -n | grep LISTEN

  3. Test AEM in another command/terminal window using cUrl as curl -I http://localhost:4502

  4. Test AEM in browser http://<vm-ip-address>:4502

Troubleshooting

Installing Oracle Java 8 Manually in Ubuntu 18x

  1. Download the tar.gz file "https://download.oracle.com/otn/java/jdk/8u231-b11/5b13a193868b4bf28bcb45c792fce896/jdk-8u 231-linux-x64.tar.gz" to your local machine. Downloading to your linux VM maybe not possible, as the above url needs a login.
  2. Copy the file to the server using SCP
  3. Make a directory: mkdir /opt/java
  4. Install and copy: sudo tar -zxf jdk-8u231-linux-x64.tar.gz -C /opt/java/
  5. Update your environment to allow Java for all users. Run this command sudo update-alternatives --install /usr/bin/java java /opt/java/jdk1.8.0_231/bin/java 1
  6. Add path to ".bashrc". Open to edit sudo nano ~/.bashrc
    • Add these lines to the end of the file:

      export JAVA_HOME=/opt/java/jdk1.8.0_231

      export PATH=${PATH}:${JAVA_HOME}/bin

Others:

  1. If the command shows active and still AEM does not load (On a browser http://localhost:4502) then check the AEM logs. Path for the log file: /<aem-folder>/crx-quickstart/logs/stdout.log

Notes

  1. The example above was tested on CentOS 7 and Ubuntu 17x, 18x
  2. AEM 6.3 version was used. Although the above process should work for AEM 6.x

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How-to Install and Start Adobe Experience Manager (AEM) as a Linux Service (CentOS 7 and Ubuntu 17.04)

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