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

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232 views

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 ...
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2answers
107 views

troubleshooting a printer problem

I have a large Kyocera Printer/Scanner/Copier machine in a office with three PCs (all plugged into a lan via router. The three PCs all have individual printers (inkJets) hooked directly via printer ...
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1answer
204 views

Measure Upload Speed between a client and our server

We host a SAAS application specially customized for multiple clients. For one customer in particular -- they are reporting sporadic performance issues from various locations on their network, in ...
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1answer
44 views

Advice on web server performance troubleshooting is needed

I'm renting a virtual CentOS based server where I have about 5 active sites running. Several months ago I noticed a significant performance degradation in how my sites are running. First symptom was ...
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1answer
46 views

Troubleshoot DBMail in SQL Server 2005

On a SQL Server 2005 machine, I have DBMail setup and correctly configured. I am able to use "Notify Operator" and EXEC msdb.dbo.sp_send_dbmail to queue emails. But the problem is the queued mails ...
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1answer
623 views

Maximum amount of memory per session with IIS/.NET

I'm troubleshooting some memory issues we're running into with a heavily used ASP.NET site hosted on IIS6. Intermittently we have to manually recycle our application pool (process) to resolve issues ...
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1answer
339 views

How do I troubleshoot network connectivity problems in windows?

I'd really like to understand how to debug my network connectivity issues, but everything I find on the internet is either for basic users on "How to add a wireless network" or it's people talking ...
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1answer
98 views

MySQL 5.0 not logging aborted connections in general log

I know there is a bug in MySQL 5.0 which prevents aborted connections from being logged in the error log (http://bugs.mysql.com/bug.php?id=24761). However, aborted connections should still be logged ...
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1answer
36 views

Unable to connect to IDAQ database from php

I'm having difficulties migrating a site to the clients host. The host is idaq.com. I've searched for ages and have found no actual answer or even close to one. I'm using the following connection ...
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1answer
228 views

Troubleshoot IIS 6 and Intermittent SQL Server Connectivity Loss

I am not a System Administrator, but I am temporarily trying to fill that role. I have 2 Windows 2003 Servers. 1 server has my Microsoft SQL Database (SQL Server 2005) and the other is the web ...
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1answer
189 views

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, ...
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1answer
159 views

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 ...
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1answer
54 views

How to troubleshoot banned connections on OS X / Ubuntu

I have an ubuntu 11.10 VM running on an OSX machine. Every once in a while some services become inaccessible from specific IPs (e.g. sometimes just ssh is blocked, and sometimes both ssh and https.) ...
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1answer
150 views

What sort of network problems can a single NIC host cause?

A remote office has a Cisco ASA 5505 connecting the LAN to our HQ LAN via VPN. When a particular Windows XP PC is connected to the ASA via a switch, the VPN tunnel drops, and after a short while, all ...
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1answer
101 views

nginx redirecting for no reason?

This was really annoying and now i see when it happens. If <ip>/NAME exist in /var/www (/var/www/NAME) nginx will give me a redirect to www._.com/NAME/ (note the slash and lack of url) which is ...
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1answer
378 views

VMware server 2.0 SYN/ACK repeating issues

VMWare Server 2.0.0 Build 122956 I am having some issues with connecting into a guest VM (Ubuntu linux 4.4.3-4 lucid) running under VMware 2.0 on a windows server host. All connections to and from ...
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1answer
88 views

DNS oddities with different nameservers

My ISP's DNS servers are sometimes sketchy, so I use 4.2.2.1 and 8.8.8.8 respectively. The Layer 3 DNS server and Google's DNS server. Sometimes there will be a long delay in resolving, and if I ...
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0answers
182 views

Monit will not start my node js app

I have a problem with Monit that I use for monitoring of my Node.js app. I just moved from a single core machine to a multi core one. On both of them I run Ubuntu 11.10. On the old one this was ...
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0answers
99 views

How to prevent Windows Server 2008 R2 from automatically shutting down applications?

I have been running various processes over night on a Windows 2008 R2 AMD64 SP1 virtual server share via a VPN connection and remote desktop. Recently, I have been noticing that when I return in the ...
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0answers
205 views

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 ...
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0answers
599 views

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 ...
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0answers
202 views

How to troubleshoot intermittent winsock 10054 errors on Windows Server 2003 SP2

We are getting 10054 errors in a couple of our applications on one server running Windows Server 2003 SP2. This happens intermittently, and we also have other similar servers running the same ...
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0answers
458 views

Slow connection to a shared .mdb file over a LAN on some machines only (SOLVED)

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 ...
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0answers
3k views

ADFS 2.0 Errors Event ID 184 & 364

I have ADFS servers set up and each component such as in URN, relay, claims etc. in place, but am getting this error massage "There was a problem accessing the site. Try to browse to the site ...
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0answers
88 views

Can't boot VM after P2V or ghost - Linux 2.6

I got this old machine that runs on a p2 400 and a Linux Debian 3.1 with kernel 2.6.8 and since it has modified binaries due to internal undocumented changes in the code, migrating off manually isn't ...
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0answers
41 views

Remote SQL Server Connection works from SSMS but not from Application

We are troubleshooting a weird issue with our SQL Server 2008 server. The application server runs a windows service that makes a DB connection via a connection string in its config file, and we end ...
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0answers
165 views

How to troubleshoot occasional Apache 500 errors?

I have GET and POST requests, both HTTP 1.0 and 1.1, to diverse URLs, mostly running Wordpress(1), which occasionally fail with a 500(2). No user has ever encountered a 500 themselves, nor have ...
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0answers
30 views

Switched google apps domains; now certain emails aren't delivered?

We recently moved from one google apps domain to another, and used Backupify to transfer email accounts, etc. Since then, we've had intermittent issues with customers not receiving emails or having ...
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0answers
42 views

Vserver CentOs 6.4

I have the following problem. I have a server based on CentOS 6.4 is running the Vserver. I did update the kernel to version 2.6.32.14. Unfortunately, after rebooting the server receives the "kernel ...
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0answers
147 views

FreeBSD 7 syslog messages: “kernel: 15.xxxxxxxxxxxxxxx too long” (or “too short”)?

I'm experiencing poor performance on an old FreeBSD system and the only anomaly I see so far are syslog messages of the form: Jul 1 12:10:50 myserverXXX kernel: 16.0ccdd219377c0d80 too long Jul 1 ...
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0answers
97 views

Windows Server 2008 R2: Weekly network failure

Thought I would throw the question on here, as I'm not a seasoned sysadmin... Every Thursday (or there about) at no particular time, the server becomes unresponsive to its usual network operations ...
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0answers
113 views

No video signal and server shuts down

I have a brand new server. The motherboard is Intel S2600CP4, two 8-core Intel E5-2600 processors. RAM is 8 DIMM slots of 8 GB each (KVR1600D3D4R11SK4/32GI, I installed them into the blue slots), ...
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156 views

Why would one server be sending DUP ACK packets to one PC, which is responding with HTTP RST packets?

I'm not a network profressional, so please excuse any wrong language. I was debugging why my DNS traffic was a constant 160Kbps on our corporate network. I opened up a wireshark trace, and I see one ...
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0answers
190 views

Hight Threads in the LAMP server. Troubleshooting

So I was wondering around the web, and cant seem to find any decent Treads trouble shooting guide. Ans at the same time my server spiked yo 3k threads. So maybe someone could give me some tips, or ...
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0answers
107 views

CISCO - Configuring Application Inspection (Fixup) How to do it for SMTP?

We are getting error in EHLO Command from outside the Router and We are getting 220 ******* kind of message instead of welcome message which is configured in the Mail Server. many suggesting its a ...
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0answers
815 views

Juniper ssg 5 web UI not working

I am facing issue with my Juniper SSG 5. I tried to configure & enable web filtering in my office following various ways to do it on the web. Even with various permutations it is still not ...
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21 views

Server Down Every 5 Hours? Centos NginxProxy

I have my websites on a Centos NginxProxy server with kloxo panel installed. My websites become unresponsive every 5 hours and then after a reboot becomes ok. I need help troubleshooting that. Here ...