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Questions tagged [test]

46 questions
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3 answers

ESXi 5x cluster Hardware Failure Scenario

Hello fellas engineers. I have a ESXi5.0 cluster setup with 3 ESXi hosts. Now I need to create a test case for networking hardware failure and preform the test in the datacenter. My Setup: 1) 3 DELL R820 Servers (all identical in the…
Danila Ladner
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How to test test environment with real data from production

i've the following infrastructure: 1x load balancer (nginx) 4x apache upstream 1x mysql server The website is pretty busy and i bought other 6 servers that are meant to replace the previous infrastructure. Since the setup is different i'd like to…
Andrea Baccega
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1 answer

How do I find out which pairs of a CAT5e cable are actually connected to another machine?

Using Linux (Debian, to be specific) on a laptop, I want to be able to check whether, for example, the TX or RX pairs are both connected to another machine. If, say, I've only connected RX (and am able to receive, using promiscuous mode), I want to…
John Locke
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2 answers

Creating a test database with copied data *and* its own data

I'd like to create a test database that each day is refreshed with data from the production database. BUT, I'd like to be able to create records in the test database and retain them rather than having them be overwritten. I'm wondering if there is a…
Jordan Reiter
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How to simulate connection timeouts - on Windows 2016 - Windows firewall?

We have an issue with some .Net applications getting connection timeouts when doing SQL requests to Db2. The code have been updated to improve logging when such timeout occurs. But, since we are not able to reproduce the errors and they only occur…
rhellem
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how to set and test nginx uwsgi_buffer_size

I have a nginx+uwsgi setup to deploy a django app. I noticed that when using g+ authentication the response from the django app has a dimention that is growing month after month. I'm reading the uwsgi logs and particularly the end of the line: 7…
Alessandro Dentella
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What free utility can I use to test LAN performance and quality?

I want to test a LAN for speed and reliability, I wanted to use qcheck but it won't instal on any of our XP systems. What other tool could I use? Is there anything with voip tests that is free? Does anyone have a link to an older version of qcheck…
garyb32234234
1
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1 answer

Configuring a private vlan for a test lab, but still access the internet

I have been looking around and trying to find ideas on how to isolate a test lab from our main network whilst still allowing the test lab access out to the internet. At the moment, our main network is on a 10.11.23.x subnet. To this we have added a…
Becky
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dnsmasq causes "Bad request syntax"

I need to wildcard localhost for dev purpose and I'm really green on dns and network things. With wildcard localhost I mean that I need to test my python and node.js applications with: localhost.dev, test.localhost.dev, etc. I've followed this…
nkint
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How to crash Oracle VM intentionally by loading system parameters

I am using Oracle VM. I want to perform a stress test on system parameters like CPU, RAM etc. Can anyone help me out with the ways in which I can load the parameters with high load like using all the virtual cores, RAM starvation etc.
Animesh Jain
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View/test websites on new server, without changing domain's DNS

I'm pretty sure it's possible, I just don't exactly know how to; but I was wondering how I could view/test my website(s) without changing the DNS? I'm migrating my websites from provider X (server IP: 159.253.1.196) to provider Y (server IP:…
Sander Schaeffer
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Linux Speedtest (or download) capable of 10Gbps

We recently just got some brand new servers from Softlayer out of Dallas 05 that should have 10Gbps connectivity and I'd like to test this claim against a few locations. Does anyone have any good method of testing this? I obviously don't expect to…
Matthew Salsamendi
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1 answer

TCP congestion avoidance (need for clarification)

I've just some question regarding TCP congestion avoidance algorithm. First of all I'm looking for explanation of, why the part of congestion avoidance algorithm is called "fast recovery"? I mean I cannot find any good reason for it, seems like it…
Artem Barger
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1 answer

Simulating a generic corporate Intranet

Preface: My company hawks a software suite for delivering live and on demand multimedia (video, slides, chat, etc.). We provide the server, client side authoring tool, and client browser players. Many of our our customers are huge corporate…
Stu Thompson
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Periodically measure speed of web server internet connection

I fear that our ISP suppling our web server's connection is not providing a good service. What software do people use to monitor the spped of a web server's internet connection? (or any internet connection for that matter). I am thinking something…
DJA
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