Install and configure ActiveMQ

Procedure

Use ssh into EC2 instance with putty, then create the folders /opt/talend and /opt/talend/activemq.
```
sudo mkdir -p /opt/talend/activemq
sudo chown ec2-user:ec2-user /opt/talend/activemq
```
Create the folder /opt/efs/kahadb, then change the owner to ec2-user.
```
sudo mkdir /opt/efs/kahadb
sudo chown ec2-user:ec2-user /opt/efs/kahadb
```
Go into the directory /opt/talend/activemq, then execute the following command to download ActiveMQ 5.14 distribution from Internet.
```
cd /opt/talend/activemq
wget https://archive.apache.org/dist/activemq/5.14.0/apache-activemq-5.14.0-bin.tar.gz
```

Extract the downloaded archive.

tar xvfz apache-activemq-5.14.0-bin.tar.gz

A directory apache-activemq-5.14.0 is created by the extraction. Enter that directory and verify that it contains several files and directories as per below:
Go into the conf directory then edit activemq.xml file to setup the KahaDB directory:
- Locate the KahaDB section under PersistenceAdapter element and update the KahaDB configuration as per below:
  - old: <persistenceAdapter> <kahaDB directory="${activemq.data}/kahadb"/> </persistenceAdapter>
  - new: <persistenceAdapter><kahaDB directory="/opt/efs/kahadb"/></persistenceAdapter>
- Save and close the file.

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