Overview

Installing a new instance of Digital Hive on Linux requires special installation considerations, and the Digital Hive Installation and Configuration Overview article can be followed.

Pre-installation Steps

1. Create a non-root user to use for the Digital Hive installation
   
2. Edit the limits.conf file, for example, sudo vi /etc/security/limits.conf
   
3. Add the following properties and save the file (include the *)
   

   * soft nofile 65536

   * hard nofile 65536

   * soft nproc 8192

   * hard nproc 8192

   * soft memlock unlimited

   * hard memlock unlimited
   

4. Using sudo, edit sysctl.conf 
    sudo vi /etc/sysctl.conf
   

5. Add the following lines and save the file
   #Added for Elasticsearch
   vm.max_map_count=262144

6. Reboot the server 
   sudo reboot
   

Postgres Installation Steps (This example uses Ubuntu, the Linux commands will be slightly different on other Linux flavours)

Here is an article that explains how to install PostgreSQL 16 on RHEL-Based Linux

https://www.tecmint.com/install-postgresql-on-centos-rhel-fedora/

1. Apply the latest Linux updates:  sudo apt-get update
   
2. Enable PostgreSQL Repository:  sudo apt install postgresql
   
3. Allow other computers to connect to Postgres:  sudo vi /etc/postgresql/16/main/postgresql.conf
   
4. Change listen_address from localhost to *, and remove the '#' in front of listen_addresses
   listen_addresses = ‘*’
5. Ensure PostgreSQL is running by running: sudo systemctl status postgresql
   
1. If it's not running, start PostgreSQL: sudo systemctl start postgresql
6. Set the password for the postgres user:  sudo -u postgres psql template1
   
7. Run this SQL:  alter user postgres with encrypted password ‘your_password’;
   
8. Type: exit
   
9. Change the authentication for the postgres user allowed for the template1 database to use md5 authentication:
   sudo vi /etc/postgresql/16/main/pg_hba.conf
10. Add this line (changing <local network IP> to your private IP):
    hostssl  template1           all               <local network IP>           md5
11. Restart Postgres:  sudo systemctl restart postgresql.service
    
12. Create a Postgres user for the Digital Hive content store
    sudo -u postgres psql template1
13. At the template1=# prompt, run this SQL (replacing admin1234 with whatever password you want)
    create user dhadmin password 'admin1234';
14. Create the Digital Hive database
    create database digitalhive;
15. Grant permissions to that digitalhive database to the dhadmin user
    grant all on database digitalhive to dhadmin;
16. Give the dhadmin user createrole permission
    alter role dhadmin with CREATEROLE;
17. Exit psql
    exit

You now have a Postgres Digital Hive database that can be used for the Digital Hive content store

Digital Hive Installation Steps

1. Download Digital Hive 2024.3 - Linux and SFTP to the Linux server
   
2. Open a Linux terminal and login as the Digital Hive user
   
3. Create a directory in your Digital Hive root, called installer.  For example, in my environment, the Digital Hive user home is /home/digitalhive/DigitalHive and I created a directory in there called installer:  /home/digitalhive/DigitalHive/installer
4. If you didn't SFTP into that folder directly, move the file to that directory:  mv DigitalHive-2024.3_linux-x64.tar.gz /home/digitalhive/DigitalHive
   NOTE: if you used root to SFTP the file to the server, then you will have to chown and chgrp the file to the Digital Hive user, For example:
   chown digitalhive DigitalHive-2024.3_linux-x64.tar.gz
   chgrp digitalhive  DigitalHive-2024.3_linux-x64.tar.gz
5. If you're not logged in as the Digital Hive user, then: su digitalhive
6. Unzip the file:  gunzip DigitalHive-2024.3_linux-x64.tar.gz
   
7. Untar the file: tar -xvf DigitalHive-2024.3_linux-x64.tar
   
8. Run the installer with this command:  ./setup.sh
   
9. At this prompt: Press 1
   
10. Enter Licensee name:  <your license name>
    
11. Enter License key:  <your license key>
    
12. Press 1 to continue
    
13. Press spacebar until this prompt:  Press 1 to accept, 2 to reject, 3 to display
    
14. Enter 1
    
15. Enter 0 (or press Enter) to Install
    
    
16. Enter 1
    
17. Enter 0 or Press Enter (for Express)
    
18. Enter 0 or Press Enter (for full installation)
    
19. Enter 1
    
    
20. Enter the Digital Hive installation path (or press enter to accept the default path)
    
21. Enter O (assuming it is correct)
    
22. Enter 1
    
    
23. Press Enter or put in whatever name you want at this prompt
    
24. Enter a password and confirm the password
    
25. Enter 1
    
26. Enter the hostname or IP
    
27. Enter the name of the database that you created
    
    
28. Press Enter (if the port is correct) or enter the correct port (in this example 5433)
    
29. Enter the Digital Hive user that you created earlier, in this example dhadmin
    
30. Enter and confirm that Digital Hive user password
    
    
31. Enter 1
    
32. Enter 1 (if you want to install IQ)
    
33. Enter 1
    
34. Press Enter for all of these ports (or enter a port that you want to use)
    
    
    
35. Enter 1
    
    
36. Installation will begin and end with a message stating that it was successful
    
    

Digital Hive should be successfully installed now