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Questions tagged [troubleshooting]

Troubleshooting is a form of problem solving, often applied to repair failed products or processes.

It is a logical, systematic search for the source of a problem so that it can be solved, and so the product or process can be made operational again. Troubleshooting is needed to develop and maintain complex systems where the symptoms of a problem can have many possible causes.

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Troubleshooting (or tracing) Windows network logon problems

I've got a situation where a client computer (Windows Vista) doesn't seem to be sending the right password to a server (Windows Server 2003). The event log records the logon failure, but as far as I can tell the client has the right password - so…
Keithius
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linux heartbeat losing packets

I am using linux heartbeat to keep ldirectord running on my webservers. My logs show heartbeat WARN: 1 lost packet(s) every couple of minutes, and I'm having trouble figuring out why. I have tried altering DEADTIME and WARNTIME in /etc/ha.d/ha.cf,…
Brent
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Apache taking up a lot of CPU while running request-tracker4

I am trying out a request-tracker installation on an EC2 micro instance. The specs for the micro instance are as follows 1) Ubuntu 12.04 64bit, 613MB RAM, 8GB Hard Drive 2) Running request-tracker 4.0.4 from the repository, perl 5.14.2, Apache2,…
bhowmik
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Diagnosing SAN connectivity issues (RHEL5)

We are currently utilizing GFS2 to share a SAN LUN between 3 servers. However due to a feature problem with vendor software we are using, we currently have the volume unmounted on two of the boxes, and are instead exporting the GFS2 filesystem via…
Matthew
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How can I easily test connectivity to external sources with WinHTTP?

I've got an server application that uses Winhttp to fetch information from an external source. Occasionally, I'll need to troubleshoot connectivity issues and I'd like an easy way to test connections through winHTTP (on the off-chance that there's…
Mike B
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Windows Server 2008 R2 Troubleshooting PID Leaking

One of our servers has been leaking PID like crazy. I wrote a simple scheduled script, and it seems that every day the highest PID increases by approx. 300'000. E.g., if on Aug.24 00:00 the highest PID is 50'796, on Aug.25 00:00 the highest PID is…
pepoluan
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What are some steps to trouble shoot denied HTTPS requests in IIS 7?

I'm hosting a site in IIS 7 that's using a wildcard certificate from RapidSSL. To date there's been no issues of people not being able to connect to the site with SSL. Now we have a client who can't connect from every machine in their network. The…
Brian Surowiec
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ASP.NET error logging locations and troubleshooting

Say an ASP.NET website suddenly starts returning a 500 error code with a blank page (not serving the configured error document). Where might I find error reports and/or clues as to what is happening, besides: Email error notifications Event Viewer…
Mr. Jefferson
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"Device not ready" on a network share in Windows 7

I have two computers C1 and C2 runing Windows 7 and both of them are members in a domain. On C1 I have an USB hard-disk which I shared for the users U1 and U2 giving them Read-Only permissions on the entire drive. However, even if I can see and…
John Thomas
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alfresco, tomcat crashes on startup, no clues in the logs

I have installed an alfresco community edition 4.0 on a Win 2003 R2 with 3GB of RAM. I've used alfresco for some hours, i've created a user, uploaded some documents. But now, restarting it, tomcat crashes during startup. The logs are VERY poor:…
AgostinoX
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Troubleshooting ESXi hardware freeze with PCI Passthrough

I have a Supermicro X9SCM board with a Atheros AR5008 PCI Express card (D-LINK DWA-556, Device=0024&Vendor=168C). The card can successfully be marked for PCI passthrough in ESXi (I tried versions 4.1 and 5.0) though each time I start a VM with the…
Goyuix
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WHEN does IIS 6.0 Application Pool CRASH with memory issues?

We've been having Out of Memory issues with our mixed classic ASP/.NET site for quite some time. Basically, we see a couple of different cases: Some request (SQL query that returns a LARGE recordset) happens that causes memory to drastically spike…
tresstylez
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Slow connection to a shared .mdb file over a LAN on some machines only

A single client program on each of about 10 computers are sharing a .mdb file on a windows 7 machine. The network is cabled and has a switch. For no obvious reason the connection on 2 of these computers as evidenced by the user experience with the…
pdinpr
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Application getting VERY slow only in the morning: tools to track the culprit?

I have two Ubuntu Servers: one acting as db server (mysql) and file server and the application server. Using this three service an application has been working flawlessly for months. Now we've found out that around 7:45 EVERY morning it really slows…
Pitto
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Troubleshooting potential compromised server from Brute Force SSH Attack

Possible Duplicate: My server's been hacked EMERGENCY So I noticed some files/folders on my webserver and investigating leads the fact that a brute force attack via SSH was done on my server (there is a file in a folder called unix which is…
Kobby Owusu
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