Load Balancing Digest

Archive for the 'Troubleshooting' Category

23 Jul

3 Tools For Diagnosing Load Balancer Problems

I realized that this was a dupe, but I think the topic is a little more effective.  Plus, I haven’t written anything in a while.  Every craftsman has their tools, and I’ve got three in particular that I use:

Telnet (Layer 4 TCP testing utility, Layer 7 interface)
OpenSSL (When Layer 4 is wrapped with encryption)
HTTP Analyzers [...]

24 Jun

Load Balancing Troubleshooting Tools

Every skillset has it’s tools.  These are the basics of the vocation, and it’s tough to do your job without them.  I have my own for load balancing, and they’re not what people typically expect.  I’ve mentioned the somewhat unorthodox troubleshooting tools that I use on here before, and now I’ve taken the step of [...]

16 Dec

Think You’re Connected? Think Again

One issue that trips up people when diagnosing load balancer problems is they see a connection has been made to a virtual service, so it looks like they’re getting through to the real server.
That’s not always the case. Depending on how your load balancer is configured, it could simply mean you’ve made a connection [...]

15 Dec

Telnet For SSL

I mentioned I used telnet quite a bit a few posts ago. I don’t use it to log into anything (plain-text passwords over the wire anyone?), instead I use it as a basic TCP connection utility. I see if I can establish a TCP connection, and then I might throw a “GET /” [...]

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