Asis Patra


Bengaluru, India

How to Open Firewall Ports on RHEL8

by on August 1, 2022 at 2:25 pm

By default any application network port mostly will be blocked by the Operating System’s firewall. As a result you will face that applications from two system are not able to communicate to each other. The same works perfectly if you run them on the same system.

You can open or add the network port in the firewall by simply adding rules as below:

# firewall-cmd --zone=public --add-port=2379/tcp --permanent

After adding the rule you must restart the firewall.

# firewall-cmd --reload

Verify all rules and opened ports.

# firewall-cmd --list-all

Category: Linux

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It’s very easy and straight forward to install LuaJIT on Intel(x86_64) or AMD system. We can install it by following the below steps: The same steps won’t work on IBM Power Systems because the code is not ported for PPC64 architecture. As a result you will hit upon the following error: As a fix, there […]  Read More »

Category: PPC64LE

How to install wrk on IBM Power Systems

by on August 2, 2022 at 10:27 am

wrk is a HTTP Benchmarking tool. It can generate significant amount of load on a HTTP server. Here is an example how it works. This runs a benchmark for 30 seconds, using 12 threads, and keeping 400 HTTP connections open. Output: wrk requires LuaJIT and OpenSSL as dependencies. You may face the following issues while […]  Read More »

Category: PPC64LE