Optimising Your 3CX Instance: Essential Post-Installation Steps for Debian Linux ISO


Creative Team
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7 Jan 2019
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Step 1: Modifying the hostname
After installing the 3CX Debian Linux ISO, we'll modify the hostname. Open the hostname file by typing nano /etc/hostname in the terminal. It would be best to replace the existing hostname with a fully qualified domain name (FQDN). For instance, change test3cx to test3cx.my3cx.nz.

Step 2: Adjusting GRUB settings
Next, we will adjust the GRUB settings. Open the GRUB file with the command nano /etc/default/grub. On the seventh line, reduce the GRUB timeout from 5 seconds to 2 seconds by altering GRUB_TIMEOUT=5 to GRUB_TIMEOUT=2. This will speed up the bootloader timeout.

Furthermore, we will remove the QUIET boot option on the ninth line. Change GRUB_CMDLINE_LINUX_DEFAULT="QUIET" to GRUB_CMDLINE_LINUX_DEFAULT="". Use update-grub to apply these changes.

Step 3: System Reboot
Lastly, fully reboot the system to effectuate all the changes made. Use shutdown -r now to initiate the reboot immediately.

Incorporate these steps into your workflow to ensure a seamless post-installation configuration of your 3CX Debian Linux ISO. Remember, proper system setup is crucial for optimal performance and security. Don't hesitate to revisit this guide whenever you need a refresher. Happy configuring!
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