The tag has no wiki summary.

learn more… | top users | synonyms

-1
votes
0answers
18 views

Strato VServer boot debugging [closed]

I have a VServer by Strato and and suddenly I can not connect to it via ssh. I have a repair modus which if I turn on I can get in but anyway I have problem with ssh which say the key is not any more ...
0
votes
1answer
29 views

How to watch a file, who accesses or uses [duplicate]

I am looking forward a way to watch a file to get following information Which process does open, read, write it? When? Result. (e.g. can they write on it, or can they read it, etc.) Strace helps ...
0
votes
1answer
28 views

Website goes down for just me. How should I diagnose (what log files to check?) (Nginx + php5-fpm)

Summary I've been running a website on a VPS and I ran into my first bit of downtime (~4 minutes). However the website was only down for me and I can't see anything in the obvious log files. Where ...
0
votes
1answer
28 views

Puppet: class already declared

I'm currently in reorganising the structure of my puppet code to a model, which uses, profiles and roles. I've started with profiles and was testing, but already run into issues :/ In my node ...
0
votes
0answers
25 views

Apache time-outs

I need some help to troubleshoot Apache time-outs. Could you please advise what tolls/steps I can use to troubleshoot this further? Details: CentOS 6.4 Apache 2.2.15 Requests just hang: $ curl -I ...
0
votes
1answer
30 views

Where should I start to try and debug a CPU spike and timeout when logging in to a Moodle site?

apologies for the newbie nature of this question .. I am a web developer though don't have too much experience maintaining servers or debugging and fixing performance issues. I have a Moodle site ...
0
votes
1answer
41 views

tail command not updating output for debug files

I know that tail -f /var/log/messages will be keep updating on screen as the contents of file gets updated. But when I tried the same thing with a debug file system's file it is not working , any ...
0
votes
1answer
549 views

How to analyze Debug Diagnostic Tool v2.0 dumps on 2003 Server x86

Debug Diagnostic Tool v1.2 comes with a log analyzer (sometimes). I can't find the analyzer component in Debug Diagnostic 2.0 when installed on 2003 Server x86. What's the recommended way to ...
1
vote
1answer
208 views

How do you disable Just-in-Time debugging messages?

In a relatively new installation of Windows Server 2008 R2, there are occasional popup messages about Just-in-time debugging. These may come up in w3wp.exe when a search bot accesses an aspx ...
0
votes
0answers
39 views

How do I get debug symbols for the Python 2.7.5 executable installed from the “python-2.7_1,2” port?

I have a runaway process to debug. The problem only manifests on two FreeBSD 9.1 servers I'm using. I have a core file that might contain useful information. My first two thoughts were to attach to ...
2
votes
2answers
46 views

View headers of HTML requests to apache

Is there a good way of viewing a detailed version of incoming requests to apache? At the minimum I'd like to check for the existence of a specific header and check its value. Requests are not coming ...
0
votes
1answer
47 views

how to debug mysql has gone?

I have a virtual machine(Ubuntu 12.04, MySQL 5.5) running under VMware and is dedicated to host a mysql server. I connect to this server on internal IP. I'm trying to find out why I get mysql server ...
3
votes
1answer
76 views

Investigating a potential CPU failure

On a Ubuntu server that I am using for computations I have recently observed that some CPU extensive programs (GUROBI,CPLEX) often segfault. Being in correspondence with tech support of the ...
0
votes
0answers
52 views

How to enable Likewise-open debugging / logging?

I have a Problem using Likewise to join a Ubuntu Server 12.04 LTS Server to a Domain an Login in users via ssh using sso. I have searched the internet but so far did not find anything about how to ...
1
vote
1answer
83 views

Lighttpd won't start when fastcgi.debug directive is used

I'm running lighttpd/1.4.28 (ssl) on Ubuntu 12.04 LTS. Everything's working, and I'm trying to do some performance tuning. I'd like to enable debug mode for the fastcgi module, however when I add ...
1
vote
0answers
26 views

Windows app not allowing debugging

I'll start by saying, I am not sure if this should go in StackOverflow or ServerFault. I posted it in StackOverflow earlier, but its been getting votes to close the question, so I assume it should be ...
11
votes
1answer
275 views

ext4 listing of files very slow in one specific directory that contained lots of files before

Background I had a small logrotate misshap... Logrotate would rotate the archived logs by misstake causing a quadratic growth of files in my /var/log/. And by the time I caught wind that something ...
1
vote
0answers
129 views

How to debug CGI over fcgiwrap/nginx

I serve executable scripts (mainly in C) through fcgiwrap connected with nginx. Since the scripts are complied, I can get the coding errors during compilation, but sometimes I receive CGI errors ...
2
votes
2answers
65 views

How to obtain last bash error

I am working with a terrible project. It uses a lot of messy shell script in background. Script might include some other scripts. And many error outputs were redirected to /dev/null. When a script is ...
3
votes
1answer
96 views

Windows 2003 r2 reboots after a few seconds from initiated

I'm having troubles with a virtual machine on a ESXi running windows server 2003 r2. The problem is that every time it initiates and displays the login window, the machine reboots with no warnings, no ...
1
vote
1answer
141 views

Debugging logrotate postrotate script

Following is my logrotate conf. /mnt/je/logs/apache/jesites/web/*.log" { missingok rotate 0 size 5M copytruncate notifempty sharedscripts ...
-4
votes
3answers
66 views

How to debug and prevent flaky unreliable IT environment? [closed]

I am not an IT admin, I'm a software developer (microsoft stack) and I'm trying to understand what is wrong with the IT environment of one of our customers. We have deployed our client\server ...
0
votes
2answers
542 views

Debugging a connection refused response on port 21

My colleagues and I are having trouble accessing Heart Internet's FTP servers. We are running a mixture of Macs and PCs and we have a Linux box in the office too. None of our machines can connect. ...
0
votes
2answers
168 views

Log PHP-script that take long time to render

I would like to find out, which pages on my server are really slow. Is it possible to log all pages that took longer than 2 seconds to render in a file? /var/log/php/php-slow.log Or could the ...
0
votes
1answer
46 views

Add causing php-script to mysql-slow.log

If you enable the line log_slow_queries = /var/log/mysql/mysql-slow.log in /etc/my.cnf or /etc/mysql/my.cnf then that will log all queries, that take longer than the setting in long_query_time. ...
1
vote
1answer
103 views

If I have a process which is supposed to be receiving data from multicast, how can I check if it actually is?

I can check gstack, but just because I see the listener threads on the recv call does not mean that call is not returning. One other thing I thought was to do something like: netstat -lupe | grep ...
0
votes
0answers
68 views

How to format the trace logs of smartcard services?

I'm trying to debug some certificate/smartcard issues and found the article Smart Cards Debugging and Developer Information at http://technet.microsoft.com/en-us/library/ff404296%28v=ws.10%29.aspx. ...
0
votes
0answers
131 views

Remote debugging visual studio asp.net web application with external IP

I try to install remote debugger in my remote machine, and connect to it in my local computer, using visual studio 2012 for asp.net web application, windows8. remote and local computers are not in the ...
0
votes
1answer
83 views

strace vs. log4cxx performance hit?

I need to debug some issue on a production server, and I'm trying to decide whether to use strace or the log4cxx logging library; one crucial characteristic I need to know before, is which of the two ...
1
vote
1answer
500 views

How to debug Node + Socket.io CPU Issues

We are running a Node Socket.io server with Express 3. The server is monitored using Forever. The service is running well, but the CPU grows throughout the day, until it reaches 90%+ and then suddenly ...
0
votes
2answers
141 views

Server does not load WordPress - No HTML nor PHP Errors

I just switched my Dreamhost WordPress site on my VPS from PHP 5.2 Fast CGI to 5.3 CGI. Somehow WordPress now refuses to load and shows a white screen of death on all WordPress pages. PHP Info and ...
0
votes
1answer
100 views

Can pingdom shut down/slow down a site on Heroku?

We have a Rails app on Heroku. We have 2 dynos. We're noticing that the site is not loading today with frequency. Lots of Request timeouts. Also, assets in particular, which are also hosted on ...
1
vote
2answers
28 views

debugging cache control

How can I check if a website is being cached correctly? I would like the webpages to be cached by browsers, but I also would like that page updates be visible immediatly when a user visits teh ...
0
votes
1answer
35 views

increasing log level to catch issues

How do you increase the log level for apache to add coredumpdirectory and to catch any segfaults. I am trying to debug some issues and need apache to log every little bit of activitiy.
-2
votes
1answer
64 views

Investigate why user has access to a folder [closed]

How can I understand why a particular user has access to a particular shared folder? Security tab of the folder contains a long list of groups groups and the user is not a direct member of any of ...
0
votes
2answers
134 views

CherryPy 3 with Apache 2 using ModWSGI: stack traces?

I am trying to show stack traces or at least some sort of errors rendered to the HTML response while using a WSGI script. A ModuleNotFound exception is raised when I tried to import a module the ...
1
vote
0answers
110 views

Is Snort able to efficiently demux and log large HTTP POST requests?

I'm trying to debug some failed HTTP POST requests containing large file uploads (~500 MB). The end-user is receiving strange HTTP responses that are not being logged in either varnish's varnishncsa ...
2
votes
1answer
1k views

centos 6 debuginfo repository does not have httpd debug version available

I am trying to get the debug version of httpd so I can use it in conjunction with gdb. I am having a hard time getting them, and they don't seem to be in the standard epel-debuginfo repository. What ...
1
vote
1answer
497 views

Apache 403 after configuring varnish

I just don't know where else to look and what else to do. I keep getting a 403 error on all my vhosts after setting varnish 3.0 Apacher log: [error] [client 127.0.0.1] client denied by server ...
1
vote
1answer
458 views

How to track down a 403 error in lighttpd?

I am including the following fragment (/etc/lighttpd/sites/local) from the top-level config file (/etc/lighttpd/lighttpd.conf) on a Ubuntu 10.04 LTS (x64) machine with Lighty 1.4.26 ...
0
votes
0answers
114 views

Debugging apache seg fault with gdb

Apache on a production server of mine is seg faulting intermittently. I have enabled core dump option in apache configuration and have several dumped core files. Unfortunately, since it is a ...
4
votes
1answer
238 views

Crash dump analysis

I hope this isn't a stupid question, and if it is, then I want to at least get it over with so I don't feel so dumb in the future. Here we are, loading up a Windows crash dump with Windbg. Here are ...
2
votes
1answer
810 views

Failure to obtain IP with ARP over Wi-Fi with personal Wi-Fi router in client mode

I'm trying to connect a Samsung TV to the Internet using a TL-MR3020 personal wireless router in client mode. The TV fails to connect to the network. It sees the ethernet cable connected though. ...
2
votes
0answers
292 views

SQL Server Debugging: “Unable to Step. Invalid operation”

I'm debugging a call to a Stored Procedure in SSMS (2012). Frequently, and various random points in the code, a dialog pops up: Microsoft SQL Server Management Studio: Unable to Step. Invalid ...
1
vote
2answers
394 views

Diagnose hard lockup on Linux

During past month one of my Debian Squeeze (Linux 2.6.32-bpo.5-amd64) machines did lock up twice, hard. No response to ARP, dark console, Caps Lock, Num Lock not working, Magic SysRq ineffective. ...
0
votes
1answer
935 views

IP Camera working on lan but not on internet

My IP cam model is Genius 350TR, I tested the cam at home on lan and internet and it worked. Then I shifted it to an office. It works on the office lan setup but I cannot connect to the ip cam from ...
2
votes
3answers
826 views

Failed Request Tracing XML fails to display in Internet Explorer (IIS 7.5)

I have installed the Tracing feature and enabled failed request tracing for a website, to debug a Classic ASP website. The XML logs are created upon occurring errors, however when I open them in IE, ...
1
vote
1answer
192 views

Node app crashes after a while on micro EC2 instance even with supervisor

I'm using supervisor to start my node.js application on a micro EC2 instance. However, the app only stays running for some time until it eventually shuts down. Not exactly sure how long the app stays ...
1
vote
2answers
516 views

Amazon EC2 instance - issuing “top” command just goes blank on the ssh terminal

I have created an Amazon EC2 micro instance, running Amazon AMI. I logged into the server using ssh client. Once it logs in successfully, if I issue the "top" command, the top output never shows up ...
2
votes
2answers
203 views

sshd immediately core dumps after fsck repair

I have a centos server that recently needed a fsck repair on it's main hard drive. After fixing a bunch of inode issues (booting from a system rescue disk), the box booted clean. Most of the ...