This section describes accessory tools that can be used to manage the WCS server.
Port routing checking
The WCS server may be behind NAT and as such it will require a port range opened for the external network, for instance, UDP 31000-32000.
This means that a UDP packet sent from the external network to the port in that range should reach the server where WCS is placed.
Hence, we have a simple test. Send a UDP packet from outside using nc and receive it on the server using tcpdump.
If the packet reached, the port is open.
or for Debian:
This command sends a simple UDP packet in the given direction.
This command makes the server listen for a particular port and immediately outputs information about packet arrival to the console:
This is Java utility that provides important information about a Java process and execution threads.
When you run jstack from the console, a brief information about jstack is shown:
If the information is not shown or the jstack utility is not found, use the installation instruction to latest version of JDK. After installing jdk you should create a symbolical link to jstack to quickly run it:
Here, 8888 is the ID of the Java process.