Install on CentOS

Installation on CentOS 7 or 8.

The CPU architecture must be x86-64. The preffered microarchitecture is Intel Skylake.

Tune your operating system for optimal performance.
See Tune operating system
Install EPAS
EPAS version 12.7 or 13.3 installed, see https://www.enterprisedb.com/downloads/edb-postgres-advanced-server.
Note: To find and install a specific minor version of EPAS do the following:
```
sudo yum --show-duplicates list <package name>
sudo yum install <package name>-<version info>
```
For CentOS 7 you have to additionally install the following repository:
```
sudo yum install -y epel-release centos-release-scl
```

Install the Swarm64 DA repository:

curl -s https://packagecloud.io/install/repositories/swarm64/swarm64da/script.rpm.sh | sudo bash

Install the corresponding Swarm64 DA package for your EPAS installation.
EPAS 12
```
sudo yum install swarm64da-epas-12
```
EPAS 13
```
sudo yum install swarm64da-epas-13
```
Add swarm64da to shared_preload_libraries in your postgresql.conf configuration file.
For example:
```
shared_preload_libraries = 'swarm64da'
```
For other recommended settings see also Recommended EPAS settings.
Restart EPAS.
Switch to a user with access to the database:
```
sudo su - enterprisedb
```
Connect to the database:
```
edb-psql -d postgres
```
Load the Swarm64 DA extension:
```
CREATE EXTENSION swarm64da;
```
A NOTICE is printed when executing the first SQL command through a connection to a database for which the swarm64da extension has not been created yet. This behavior is controlled by the following configuration parameter:

swarm64da.enable_notice_not_created_extension (boolean)

Enables or disables the reminder to create the extension. The default is on.
Verify that the Swarm64 DA extension is loaded correctly and look up its version number:
```
SELECT * FROM swarm64da.get_version();
```

Install a valid license.

SELECT swarm64da.load_license('<path-to-license-file-on-server>');

See also Install a license for Swarm64 DA.

Check and follow the Swarm64 DA settings advisor and documented recommendations to tune your database system for optimal performance.
```
SELECT * FROM swarm64da.show_advice();
```
See also Settings advisor and Recommended EPAS settings.
Create columnstore indexes.
Columnstore indexes are necessary to maximize the performance benefits. Create an index for each large table covering the most common accessed columns. See Columnstore index and Using a columnstore index on a small TPC-H data set.