Install DataStax Enterprise 6.8 on RHEL-based systems using Yum

To install DataStax Enterprise (DSE) on SUSE, use the binary tarball installation.

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 (for use with DSE OpsCenter). 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

Root or sudo access.
A supported platform.
Yum Package Management 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)
RedHat-compatible distributions require EPEL (Extra Packages for Enterprise Linux).
Python 3.8-3.11 required for running cqlsh.

Use DSE OpsCenter Lifecycle Manager (LCM) to automatically manage Java and JCE installs for DSE clusters. For more information about choosing a Java vendor, see Choosing a Java vendor in LCM.

Hardware requirements

See Recommended production settings.

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:
```
sudo yum install libaio
```
Find DSE 6.8 on IBM Fix Central:
1. Go to Fix Central.
2. In the Product selector field, begin typing IBM DataStax Enterprise, and then select that option from the menu.
3. In the Release field, select the version that you want to install.
4. Click Continue.
5. On the Identify fixes page, click Continue to use the default Browse for fixes option.
6. On the Select fixes page, select the fix pack (DSE version) you want to install, and then click Continue.
  
  Depending on the product and version, more fix packs might be available if you set the Platform filter to All, and then click Submit.
7. If prompted, sign in with your IBMid.
  
  An IBMid account with MFA enabled is required. If you don’t have one, create an IBMid account. If your organization uses Enterprise Federation (EF) for authentication with corporate credentials, see the IBMid EF documentation.
8. On the Download options page, select Download using your browser (HTTPS), and then click Continue.
9. Review the terms and conditions, and then click I agree to activate the download links.
Click the DSE RPM package link to download the file, for example, dse-6.8.60-rpm.zip.
Extract the RPM files from the .zip file:
```
sudo unzip dse-6.8.60-rpm.zip
```
You can use the package signing public key (dse-rpm-signing.pub.key) in the file to set up and verify the RPM packages.

Import the package signing public key:

sudo rpm --import dse-rpm-signing.pub.key

Set up a local Yum repository to host the downloaded RPM files:

Apache

See Apache in the Red Hat documentation for more information.

nginx

See nginx in the Red Hat documentation for more information.

Red Hat Satellite

See Uploading content to custom RPM repositories in the Red Hat Satellite documentation for more information.

Add the local DataStax Yum repository to a file called /etc/yum.repos.d/datastax.repo:

[datastax]
name={company} Repo for DSE
baseurl=file://**REPOSITORY_DIRECTORY_PATH**
enabled=1
gpgcheck=0

Install the DSE packages:

Specify all packages; otherwise, the installation fails.

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

Install an earlier 6.8.x version:

sudo yum install dse-6.8.version_number-1 \
    dse-full-6.8.version_number-1 \
    dse-libgraph-6.8.version_number-1 \
    dse-libcassandra-6.8.version_number-1 \
    dse-libhadoop2-client-6.8.version_number-1 \
    dse-libsolr-6.8.version_number-1 \
    dse-libtomcat-6.8.version_number-1 \
    dse-liblog4j-6.8.version_number-1 \
    dse-libspark-6.8.version_number-1

For example:

sudo yum install dse-6.8.0-1 \
    dse-full-6.8.0-1 \
    dse-libgraph-6.8.0-1 \
    dse-libcassandra-6.8.0-1 \
    dse-libhadoop2-client-6.8.0-1 \
    dse-libsolr-6.8.0-1 \
    dse-libtomcat-6.8.0-1 \
    dse-liblog4j-6.8.0-1 \
    dse-libspark-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 yum install dse-demos-version_number-1
```

Optional: Configure systemd units in RedHat systemd configuration.

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.
The Next steps section 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

Result

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 tarball 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.