To install WebCallServer you need a Linux x86_64 server that matches the following minimum specifications:
- 2 gigabytes of RAM
- 10 gigabytes of disk space
- 1 CPU core
The following must be installed on the server:
WCS can be configured to work in networks of varying topology, for instance, behind corporate NAT or for using a public IP address to services external clients. For quick setup and evaluation of WCS capabilities we recommend using a VPS or a dedicated server with a static and public IP address that is also the IP address of the network interface of the same server. Usually, such a virtual or dedicated server can be rented from a number of providers.
Any distribution package will do: CentOS, Debian, Ubuntu, RedHat, Fedora. Today, server is tested to be compatible with the following distribution packages:
- CentOS 7.6
- Ubuntu 18.04, 20.04
- Fedora 31
The recommended distribution package is CentOS 7.6.
Make sure the server is connected to the Internet and you have root access via SSH.
Set your host name in /etc/hosts
check if host name is resolved correctly with command
In some distribution packages (i.e., CentOS) wget is not installed by default. If you plan to use this utility to upload necessary installation packages, install wget using the following command
This is how the server ready to install WCS looks from the Putty SSH client. Please note that we use an x86_64 system.
Often Linux distributions have a preinstalled JVM.
We recommend installing the latest version of JDK (Java Development Kit), because JDK has a number of useful diagnostics tools that JVM lacks.
Today, the following JDK versions are tested and recommended to use: 8, 12, 14. WSC can be unstable with another JDK versions.
JDK installation from repository
JDK installation from OS repository (CentOS for example) should be done as follows
Manual JDK installation
Here is the example of OpenJDK 12 manual installation with downloading package from https://download.java.net/java/GA:
To check JDK installation use the following command
JDK installing is done
Here is how the server with installed JVM / JDK looks. Please notice the line: 64-Bit Server VM. Java works in the 64-bit mode with the server settings.
If MCU mixer is planned to use with participant names displaying, and JDK 12 or 14 is installed, it would be necessary to install fontconfig library: