How to create/simulate a user load on a Linux server?

Question

linux

Let's say I have a WEB server, Asterisk, FTP, DNS, mail server configured, how can I create a "virtual" load on these servers? To learn how to read logs, to learn how to optimize the load on the server. What can be used? Applications for DDOS attacks? Or maybe there is a special software for testing?

Answer 1

JMeter - there is no free and suitable alternative

Answer 2

Do you really need it? All these services are quietly tested separately by their own clients. I don’t see much point in testing everything at once.
But if you really want to, then take https://jmeter.apache.org/ , describe the scenario, and run it. There are probes for DNS, SIP, HTTP, FTP, and a bunch of everything.

Answer 3

There are 2 ways:
1) all sorts of open-source utilities / systems, as you have already been told - jmeter, ab, ....
2) services - for starters, it's probably easier to figure it out - https://loader.io/ , https:// app.k6.io/ etc.

Answer 4

Yandex tank

Answer 5

To load test a web server, you can use the Siege PS utility
. I hope you use FTP only within your network, and not on the external Internet.