Install DataStax Enterprise 6.8 on Debian-based systems using APT

Use these instructions for installing DataStax Enterprise (DSE) 6.8 on Debian-based systems using APT.

Some things to know about installing DataStax Enterprise

These instructions apply to all versions of DSE 6.8. For specific changes, see the DSE 6.8 release notes.
When installed from a package (Yum or APT), DSE runs as a service. The service initialization script is located in /etc/init.d/dse. Run levels are not set by the package.
This procedure installs DSE 6.8 and the DataStax Agent. It does not install DSE OpsCenter, DataStax Studio, or DataStax Bulk Loader (DSBulk).
When connecting to DSE 6.8 from DSE OpsCenter, use version DSE OpsCenter 6.8; earlier versions are not supported.

When DSE is installed, it creates a cassandra user in the database. Do not use the cassandra user in production. Failing to do so is a security risk. See Adding a superuser login.

Prerequisites

An IBMid with MFA enabled.
- If you are an existing IBM customer with an IBMid, you can continue to use your established account.
- If you don’t have an IBMid, you can create one.
- If your company uses Enterprise Federation (EF) for authentication with corporate credentials, see the EF documentation.
Root or sudo access.
A supported platform.
Aptitude Package Management (APT) application.
Configure your operating system to use the latest version of Java 8:
- Recommended. The latest build of a TCK (Technology Compatibility Kit) Certified OpenJDK version 8. For example, OpenJDK 8 (1.8.0_242 minimum). DataStax’s recommendation changed due to the end of public updates for Oracle JRE/JDK 8. See Oracle Java SE Support Roadmap.
- Supported. Oracle Java SE 8 (JRE or JDK) (1.8.0_151 minimum)
Python 3.8 through 3.11, or Python 2.7.x. Each listed version provides support for cqlsh, but DataStax recommends using Python 3.11.

If you have an older RHEL distribution, such as CentOS 6.5, you must install Python 2.7:
1. Verify your Python version:
  
  python -V
2. If the result isn’t Python version 2.7.x, install it from the Software Collections (SCL) Repository by running the following commands:
  
  sudo yum update
  
  sudo yum install scl-utils
  
  sudo yum install centos-release-scl-rh
  
  sudo yum install python27
  
  sudo scl enable python27 bash
3. Verify the update by checking the Python version again. Make sure the result is Python 2.7.x.
4. After logging out or restarting, you must enable python 2.7:
  
  sudo scl enable python27 bash
  
  Note that enabling Python 2.7 in .bash_profile or .bashrc causes the machine to hang because CentOS 6 relies on Python 2.6 for Yum.

Procedure

In a terminal window:

Verify that a required version of Java is installed:
```
java -version
```
If OpenJDK, the results should look like:
```
openjdk version "1.8.0_242"
OpenJDK Runtime Environment (build 1.8.0_242-b09)
OpenJDK 64-Bit Server VM (build 25.242-b09, mixed mode)
```
If Oracle Java, the results should look like:
```
java version "1.8.0_241"
Java(TM) SE Runtime Environment (build 1.8.0_241-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.241-b13, mixed mode)
```
If not OpenJDK 8 or Oracle Java 8, see Install the Java Virtual Machine. DataStax recommends the latest build of a Technology Compatibility Kit (TCK) Certified OpenJDK version 8.
Install the libaio package. For example:
- Debian platforms:
  sudo apt-get install libaio1
- Ubuntu 24.04 and later platforms:
  sudo apt-get install libaio1t64

Download the DSE DEB packages from Fix Central:

Sign in to Fix Central.
In the Product selector field, enter IBM DataStax Enterprise.
Select the DataStax Enterprise version you want to install from the Release list, and then click Continue.
On the Identify fixes page, click Continue to use the default Browse for fixes option.
Select the fix pack (DataStax Enterprise version) you want to install, and then click Continue.

On the Download options page, select the Download using your browser (HTTPS), and then click Continue.

This step is only required the first time you download a file using Fix Central. If you need to change your download method for subsequent downloads, use the Change download options link in the Download options section of Fix Central pages.

Review the terms and conditions, and then click I agree.

Click the DSE DEB package link to download the file, for example, dse-6.8.60-deb.zip.
Extract the DEB files from the .zip file:
```
sudo unzip dse-**VERSION**-deb.zip
```
You can use the package signing public key (dse-deb-signing.pub.key) in the file to set up and verify the DEB packages.
Set up a local APT repository to host the downloaded DSE Debian package.

For more information, see Setting up a local APT repository.
Add a DataStax repository file called /etc/apt/sources.list.d/datastax.sources.list:
```
echo "deb [trusted=yes] file:REPOSITORY_DIRECTORY_PATH ./" | sudo tee -a /etc/apt/sources.list.d/datastax.sources.list
```
The [trusted=yes] option allows APT to use the repository without GPG key verification.
Update the packages:
```
sudo apt-get update
```

Install the DSE packages:

Specify all packages;otherwise, the installation fails.

Install the latest version (6.8.x):
```
sudo apt-get install dse-full
```

Install an earlier 6.8.x version:

sudo apt-get install dse=version_number-1 \
    dse-full=version_number-1 \
    dse-libcassandra=version_number-1 \
    dse-libgraph=version_number-1 \
    dse-libhadoop2-client-native=version_number-1 \
    dse-libhadoop2-client=version_number-1 \
    dse-liblog4j=version_number-1 \
    dse-libsolr=version_number-1 \
    dse-libspark=version_number-1 \
    dse-libtomcat=version_number-1

For example:

sudo apt-get install dse=6.8.0-1 \
    dse-full=6.8.0-1 \
    dse-libcassandra=6.8.0-1 \
    dse-libgraph=6.8.0-1 \
    dse-libhadoop2-client-native=6.8.0-1 \
    dse-libhadoop2-client=6.8.0-1 \
    dse-liblog4j=6.8.0-1 \
    dse-libsolr=6.8.0-1 \
    dse-libspark=6.8.0-1 \
    dse-libtomcat=6.8.0-1

Optional: Install the demos:

Installing the DSE demos is not recommended for production. Only install the demos in development environments to run tutorials.
```
sudo apt-get install dse-demos=version_number-1
```

DSE is ready for additional configuration:

For production, be sure to change the cassandra user. Failing to do so is a security risk. See Adding a superuser login.
DSE provides several types of workloads (default is transactional). See startup options for service or stand-alone installations.
Next steps below provides links to related tasks and information.

Start DSE

For single-node cluster installations only:

Start DSE:
```
sudo service dse start
```

Verify that DSE is running:

nodetool status

Review the output to verify that DSE is running:

Datacenter: Cassandra
=====================
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
--  Address    Load       Tokens  Owns    Host ID                               Rack
UN  127.0.0.1  82.43 KB   128     ?       40725dc8-7843-43ae-9c98-7c532b1f517e  rack1

Next steps

You must change or delete the cassandra user created on installation. See Adding a superuser login.
Configure startup options: service or stand-alone.
If performing an upgrade, go to the next step in the Upgrade Guide.
Configuring DataStax Enterprise (DSE) - Settings for DSE Advanced Security, DSE In-Memory, DSE Advanced Replication, DSE Multi-Instance, DSE Tiered Storage, and more.
Default file locations for package installations
Changing logging locations after installation.
Starting and stopping DataStax Enterprise (DSE).
Preparing DataStax Enterprise (DSE) for production.
Recommended production settings.
Planning and testing DataStax Enterprise (DSE) cluster deployments.
Configuring the heap dump directory to avoid server crashes.
Cassandra driver compatibility.

Install DataStax Enterprise 6.8 on Debian-based systems using APT

Some things to know about installing DataStax Enterprise

Prerequisites

Hardware requirements

Procedure

Start DSE

Next steps

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