General :: Troubleshooting File I/O Errors And Logging?
Jun 14, 2011
I have an oracle database that is getting file i/o errors. I don't think it is the fault of oracle, but the nfs mounted filesystems. So ... to troubleshoot my next step is to see if Linux is having trouble with i/o. These are nfs mounted and there are many files located on the filesystem which is having the error. The error only occurs on one file.Does anyone know how to turn on logging for any errors received? I assume I need need logging for nfs daemon, but not sure. Please correct me if I'm wrong.
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Feb 20, 2010
I'm getting numerous Gnome errors after logging in... Previously everything was working fine; perhaps a software update messed things up? I have looked around for potential solutions, but none that I have tried have made any difference. The errors I get are: The panel encountered a problem while loading:
[code].....
how I can fix this? This is Ubuntu 9.10 PowrePC installed on a PowerBook G4 -- I'd really love to be able to see the battery level remaining (and seeing the time would be nice, too ).
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Feb 23, 2011
I have just complied Snort 2.9.0.4 under Ubuntu 10.10 x86_64 installed with all Lamp package.The syntax i used to compile Snort as follows below
[Code]...
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Dec 29, 2010
when you log in through the terminal as root, you get a question if you want to apply the proxyconfiguration or not.
I have done this by changing the .bash_profile of the root-user:
Code:
I have adapted rsyslog with the following:
Code:
But it doesn't work. The messages have to be written to the logfile by using the logger-command.
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Apr 13, 2011
Generally SSH related log messages are logged in /var/log/messages file. Is there a way to log them in another different file? I mean is there some configuration setting to enable this?
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Jul 2, 2011
I am facing a problem while trying to log SSH messages in a separate file, say, /var/log/ssh_logs. I have tried modifying the syslog-ng.conf file as follows:
filter f_ssh { facility(auth, authpriv) and match("sshd[[0-9]+]:"); };
destination d_ssh { file ("/var/logs/sshd_logs"); };
log {
[code]....
But still I am not able to get the ssh logs in the new file. They continue to go to /var/log/auth.
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Jun 29, 2010
i am having a problem concern zlib installation.i tried configure file successfully but make file displayed some errors.that usr/linux/limits.h not found.so i found that i have to install glibc-headers-devel...but there is no such a kind of package in ubuntu repository?/????/some people saying that libc6-devel is equal to them!
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May 20, 2011
This must've been done before: I want to keep a log file open in terminal so I can monitor updates to it as they occur. My searches are coming up with everything but this situation... I must be missing some terminology or something key, because people do this all the time inside of other programs (NetBeans, or rails server, for example).
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Aug 11, 2010
I have a windows install with linux installed within the windows system using WUBI. I attempted to change the user folder and after logging off I received a err message regarding /home/XXX/.ICEauthority. I am using ubuntu 10.04 LTS.
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Mar 21, 2010
I have an internet connection with 512kbs speed. I have PCLinuxOS installed on my laptop. when I boot the machine through PCLinxOS, I am not able to connect to the internet.
I am not getting IP/DNS entries/Gateway by my ISP. Can anyone please help me in troubleshooting this ?
But when the same Internet connection is connected to another Windows XP machine. Its working fine.
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Apr 5, 2011
I got two computers with the exact same symptoms today: Both seem to be alive. They answer pings and they host virtual machines which are working. However, I cannot login via SSH. I get
$ ssh -v obelix
OpenSSH_5.3p1 Debian-3ubuntu6, OpenSSL 0.9.8k 25 Mar 2009
debug1: Reading configuration data /home/mike/.ssh/config
debug1: Applying options for obelix
[code]....
On the console I can switch the ttys and enter my login credentials. After that I see the GNU/Debian Linux welcome message an no prompt. The system seems to hang. I'm able to switch the tty again and login with the same result. (I tried that three times now and I start running out of ttys.) A search on the Internet suggested some ressoucre shortage. How could I release some resoucres than? How could I further investigate the situation before just trying a hard power off?
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Oct 31, 2010
My problem started only after I upgraded my hardware. I'll describe the problem and the changes that led to it.
Problem: I have to restart my computer a second time before my icon set and controls are shown properly. The first time I boot up, I get an ancient looking set of controls. (By controls, I mean buttons, window splitters, etc.). My custom icon set is replaced by an ancient looking icon set I've never seen in Ubuntu before. (Maybe it is a Debian default? It certainly isn't stock Ubuntu). The Gnome panels are completely different from normal too. I simply reboot again and everything comes up the way it should. Every time I start my computer, I have to restart a second time. After that, no problems until I need to shut it down and start again.
I'm running a relatively new installation of Ubuntu 10.10. I changed the theme to a bisigi theme [url] and everything was fine. No problems at all until...
Changes: Then I upgraded my video card from an older nVidia to a GT430. I had to change a couple things in xorg.conf. For that, I just used the suggestions made by the nVidia settings utility. I also upgraded my mobo and RAM (from 4GB to 16).
These problems started only after I upgraded my hardware. Of course, the hardware upgrade involved the above noted software configuration changes. (xorg.conf was the only required change.)
I'm looking for ideas on how to troubleshoot this? I don't even know the first step. For example, what logs should I check? Should I suspect a hardware problem (e.g., bad video card) or is this software/configuration related?
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Mar 26, 2010
sound icon is not visible at the panel after uninstalling kde packages from ubuntu ultimate 2.5. can any one help on this?
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Jun 23, 2011
I found a rpm feature. If you rpm install * and one of the packages fails to install then none of the remaining packages will be installed.
Does anyone know how to use rpm to install packages with file globbing and have rpm attempt to install all of the packages?
I found that --force works, yet I do not want to install over already installed packages.
I doing this because I need to install all of the packages in a directory.
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Mar 8, 2009
When trying to delete :
I must say that the tar file contain only soft links...not real files...
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Dec 14, 2010
I have a samba file server that has Windows XP machines connecting to it. Fairly regularly, I get messages such as the following. Are these anything to worry about? What do they mean? Nobody ever has problems with disconnecting or losing their mapped drive or their desktop shortcut not working.
Code:
Nov 15 15:37:21 servername smbd[27516]: [2010/11/15 15:37:21, 0] lib/util_sock.c:read_socket_data(384)
Nov 15 15:37:21 servername smbd[27516]: read_socket_data: recv failure for 4. Error = No route to host
[code]....
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Oct 23, 2010
I am trying to upload an IOS in the cisco NAC Appliance. The IOS version has to be updated as 4.8. I am getting the below error when i tried. File is not in gzip format Child return status 1 Error exit delayed from previous errors. I am using the below command to unzip the IOS file. tar xzvf ccca_upgrade-4.8.0-from-4.6.x.tar.gz.
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Jun 24, 2011
I am using RED HAT linux AS-4. I have written a script which execute on job. This script takes the cold backup of oracle database files. The script is
Script:
SQL> !tar cvf /4hd/backup/temp_backup/full_offline_backup_`date +%d-%m-%Y+%H-%M-%S`.ora /home/oracle/oradata/orcl /2hd/oracle /3hd/oracle /backup_ide/oracle --gzip --exclude-from=/home/oracle/backup_scripts/exdtime
[code]....
Error: tar: Error exit delayed from previous errors
Due to this error the backup cannot be restore to standby server.
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Jul 7, 2009
What I am trying to do is log IP Address, MAC Address and the host name for records. So I can have a record of what PC got which IP address and when they got it. So far my search has yielded no results. It would not be that big of a deal as I could always look at the dhcp file, but it is generated dynamically (3rd party application using RADIUS and each user gets a host).
subnet 208.x.x.0 netmask 255.255.255.0 {
option routers 208.x.x.1;
option subnet-mask 255.255.255.0;
[code]....
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Apr 14, 2011
I've written an Expect script that assists with change management on Cisco devices. The script creates log files for pre-change, the change itself, and post-change. Each log and its commands is triggered by a ! command. For example:
Code:
./dochange.exp hostname
<script spawns bash, user SSHes to hostname>
!PRE
[code]....
All of this works fine. My big hair-pulling hiccup is that the resulting log files are filled with raw backspace characters! I am using log_file to log the output from the script. I stop and restart logging with a new file when needed. However, the log files are pretty much unusable. After doing some research, it looks like log_file sends output to the file in real-time, unbuffered. When I hit a key, it's immediately sent to the log. What I would like is for only the resulting string to go to the log. If I start to type 'reload' and instead type 'show run', I don't want 'reload' to be listed in the log at all.
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May 7, 2009
Ubuntu ver 8.04.1 and Bind ver 9.4.2
I've set this up as a primary dns server, Bind is the only thing running on it, no gui, etc. I followed the default settings so I have a named.conf, named.conf.options, and named.conf.local file.
I have a log file I labeled as named.log in this path /var/log/bind. I'm using logrotate to rotate out the file.
My problem is that after syslogd restarts in the morning. My named.log file don't start logging info until I restart Bind. The new named.log file gets created and the old files rotate out and compress. All of the other log files in /var/log, syslog, messages, mail, etc, rotate out and compress like they should, after syslogd restarts.
I know that I could restart Bind using Cron but I shouldn't have to.
Below are snips of the files I'm using.
I named this one 'bind' and it's in the directory /etc/logrotate.d
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Jul 22, 2010
Can anybody tell me what kind of fsck errors are found on a system?
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Jan 14, 2011
A colleague gave me a shell script ("dti_motion") which needs to be run from the directory containing all the files it works on. I want to run the same script for several different directories. But I don't want to have to cd into each directory, run the script, wait for it to finish, and then cd to the next directory (there are 52 to do altogether).
So I wanted to write a very simple script that will cd to each directory and perform the script there, before going on to the next one. My colleague's script ("dti_motion") is stored in my home/bin/ and is executable. My home/bin/ is in my path, as verified by echo $path. When run from a directory containing the necessary information, the dti_motion script works perfectly well. I wrote an extremely inelegant script called "dti_motion_do_all" which is also stored in my home/bin/ and executable:
#!/bin/sh
#Get motion information for each subject, using Mark's script, called dti_motion
cd /imaging/cr01/PD_DTI/C_10/12x5
[code]....
I know there will be more elegant ways to write this script with loops, rather than simply using cd, but for the moment, I just want this to run, until I have learnt to use loops properly. how to correct either of those "command not found" or "no such file or directory" errors, given that both the original dti_motion and my dti_motion_do_all script are in my /home/bin/ (which is on my path) and both scripts are executable?
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Mar 10, 2010
I want to backup my Ubuntu box and I found a couple very helpful articles that describe how to use tar for backup and restore. So far so good. I've dabbled in Lin/Unix in the past, mainly on work systems, but Linux on my personal PC is new to me.
When I ran the tar command as root (su -) I noticed several errors scrolling by in the window. It's scrolling too fast to note the exact errors, but I did notice "permission denied" a few times.
Is there some way that I can capture the output of the tar command to a file so I can review it for errors and/or permission denied statements?
Can I just add some arguments to tar?
tar cvpzf backup.tgz --exclude=/proc --exclude=/lost+found --exclude=/backup.tgz --exclude=/mnt --exclude=/sys /
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Oct 29, 2010
I'm trying to restore a corrupt windows disk. When I try to copy the user's folder, the huge amount of errors exceeds the terminal's buffer and are lost. I would like to send cp errors to a file so that I have a list of the corrupt files. (hopefully the user will decide they are not important)
I'm presently using
Code:
sudo cp -rp (badfolder) (newfolder)
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May 13, 2011
The server is booting up properly and the system is running. When browsing web sites on the sever and they seem to run fine. But when you make requests to it, it seems to take a long time to process stuff. Such as large mysql request. Even to the point it freezes. It seems that if you make a request of some sort it just over loads. I have checked the logs and the most I can get from it that one of my wiki sites that seem to be getting nailed with spam bots trying to getting which is one of the databaes that where repaired could be slowing it down A LOT. Now I did find a couple databases that where marked as crashed and they have been repaired. I am not really sure what is causes the errors since the HD space is fine, ram is fine, internet connection is fine...So I am not familiar with diagnoses linux as much as I am with a windows pc. I am not real shell friendly. I am not good with the basic troubleshooting commands to try and identify the source of the problem to correct it. Could anyone point me the way...
Thanks in advance and I apologize for being a ra-tard on these. I should know this stuff more than I do running a server like this. It was created in 2006 and has been problem free since. Another thing, mass emailing isnt working either. It may be mysqld related. Sorry for the fragments and such. It also seems the SMTP isn't working properly as well suddenly.
Another error I been seeing:
PHP Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 16 bytesPHP Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 16 bytes some times I see this as a 32 or 64 bytes as well.
FTP Connection: It is also slow when making ftp connects. It is extremly slow but they finally do complete. It can be just a simple connection to display content. Slow.
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Mar 2, 2012
I've generated some srt subtitle files using gocr from pgm files used in DVD's. The ocr program gets confused between lower case L and upper case i and sees them as the same thing. This results in words with capital i's in them instead of lower case L.
What is the best way to automate the correction without a spell checker? I tried sed, but it's difficult to tell between the i's that you want and those that need changing. I figured that any word that consists solely of capital i's is ok, e.g. Roman Numerals, but any capital i not at the beginning of a word needs changing.
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Jan 21, 2011
I just installed Fedora and it worked for a few reboots. I am getting the following errors on startup:
Could not update ICEauthority file. /var/lib/gdm/.ICEauthority
There is a problem with the configuration server.
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Mar 28, 2010
I have been having problems with Ubuntu. I just downloaded it yesterday and burned it to CD. However, when attempting to install it, I get errors. Unfortunately, I cannot recall the exact error but it stops the install. I will give further information later but wanted to ask if anyone has heard of this happening and if so, what the problems might be? I checked it with the MD5 and it appears to be a valid file, but the disk is giving me errors!
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Aug 16, 2010
I have had no problems connecting to any of my wireless networks in the past. Right now I am at a friend's house and can't get internet access with my laptop. I have entered the appropriate fields in /etc/network/interfaces (as I usually do)
auto wlan0
iface wlan0 inet static
address 192.168.2.64
netmask 255.255.255.0
broadcast 192.168.2.255
gateway 192.168.2.1
I checked this info with the router's web interface and everything seems fit. The network does not have a password. I have tried adding "wpa-ssid belkin5g" and "wireless-ssid belkin54g", and neither one works (can't ping the router after bringing wlan0 down then back up). I have also tried connecting with DHCP instead of setting a static address.
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