Error Log Linux
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know where the log files are located, and what is contained in each and every log file. When your systems are running how to see logs in linux smoothly, take some time to learn and understand the content of various log
Checking Log Files In Linux
files, which will help you when there is a crisis and you have to look though the log files linux error log location to identify the issue. /etc/rsyslog.conf controls what goes inside some of the log files. For example, following is the entry in rsyslog.conf for /var/log/messages. $ grep "/var/log/messages" /etc/rsyslog.conf *.info;mail.none;authpriv.none;cron.none /var/log/messages In linux system error log the above output, *.info indicates that all logs with type INFO will be logged. mail.none,authpriv.none,cron.none indicates that those error messages should not be logged into the /var/log/messages file. You can also specify *.none, which indicates that none of the log messages will be logged. The following are the 20 different log files that are located under /var/log/ directory. Some of these log files
Ubuntu Error Log
are distribution specific. For example, you'll see dpkg.log on Debian based systems (for example, on Ubuntu). /var/log/messages - Contains global system messages, including the messages that are logged during system startup. There are several things that are logged in /var/log/messages including mail, cron, daemon, kern, auth, etc. /var/log/dmesg - Contains kernel ring buffer information. When the system boots up, it prints number of messages on the screen that displays information about the hardware devices that the kernel detects during boot process. These messages are available in kernel ring buffer and whenever the new message comes the old message gets overwritten. You can also view the content of this file using the dmesg command. /var/log/auth.log - Contains system authorization information, including user logins and authentication machinsm that were used. /var/log/boot.log - Contains information that are logged when the system boots /var/log/daemon.log - Contains information logged by the various background daemons that runs on the system /var/log/dpkg.log - Contains information that are logged when a package is installed or removed using dpkg command /var/log/kern.log - Contains information logged by the kernel. Helpful for you to troubleshoot a custom-built kernel. /v
and Logs Linux maintains several system logs that help you administer a Linux system by informing you of important events. Probably linux syslog the most important log is the file /var/log/messages, which records a suse linux error log variety of events, including system error messages, system startups, and system shutdowns. Like most other Linux
Linux Mysql Error Log
files, the file contains ASCII text, so you can view it with a text editor or the text processing commands described in Chapter 13. A special command, http://www.thegeekstuff.com/2011/08/linux-var-log-files dmesg, makes it easy to view the log messages related to the most recent system startup. If your system is behaving unusually, use dmesg to quickly see if something went wrong during the system startup sequence. Of course, you must have some way of determining what's usual and unusual among the many messages emitted during http://www.oreilly.com/openbook/debian/book/ch07_04.html system startup. The best way to do so is to print the output of the dmesg command and keep it on hand for comparison with suspicious output. If your system has an attached printer, you can print the output of dmesg by entering the following command: dmesg | lpr Other logs found in the /var/log directory include: apache A directory that contains two log files pertaining to the Apache web server, access.log and error.log. exim A directory that contains several log files pertaining to the exim mail transfer agent. nmb and smb Files that contain log entries pertaining to Samba, the Microsoft-compatible networking server. ppp.log A file the contains log entries pertaining to PPP. 7.3 Starting and Stopping the System and Services 7.5 Setting the System Time and Time Zone Back to: Learning Debian GNU/Linux oreilly.com Home | O'Reilly Bookstores | How to Order | O'Reilly Contacts International | About O'Reilly | Affiliated Companies | Privacy Policy © 2001, O'Reilly & Associates, Inc.
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or http://unix.stackexchange.com/questions/38978/where-are-apache-file-access-logs-stored posting ads with us Unix & Linux Questions Tags Users Badges Unanswered Ask Question _ Unix & https://www.digitalocean.com/community/tutorials/how-to-view-and-configure-linux-logs-on-ubuntu-and-centos Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Where are Apache file access logs stored? up vote 81 down vote favorite 20 Does anyone error log know where file access logs are stored, so I can run a tail -f command in order to see who is accessing a particular file. I have XAMPP, which is an Apache server installed on my machine, which automatically logs the accesses. It is stored in my installation folder. files logs syslog share|improve this question edited May 19 '12 at 12:50 Gilles 371k696751126 asked May 18 '12 at 21:51 AkshaiShah 1,0012108 On what distribution, or with what hosting provider? Logs are linux error log typically under /var/log, but some systems have them elsewhere. –Gilles May 19 '12 at 12:51 add a comment| 3 Answers 3 active oldest votes up vote 92 down vote accepted Ultimately, this depends on your Apache configuration. Look for CustomLog directives in your Apache configuration, see the manual for examples. A typical location for all log files is /var/log and subdirectories. Try /var/log/apache/access.log or /var/log/apache2/access.log. If the logs aren't there, try running locate access.log. share|improve this answer answered May 19 '12 at 12:54 Gilles 371k696751126 +1 for CustomLog –Radu Sep 30 at 14:05 add a comment| up vote 20 down vote If you can't find the log with Gilles's answer, there are a couple more things you can try. Look in /var/log/httpd. Run sudo locate access.log as well as sudo locate access_log. The logs on my system were not visible except to root, and the file was called access_log instead of access.log. share|improve this answer answered Jan 27 '15 at 19:28 Don Kirkby 30124 3 +1 for /var/log/httpd - led me right to it on our CentOS installation –Chuck Wilbur Oct 2 '15 at 19:27 add a comment| up vote 5 down vote Apache server records all incoming requests and all requests processed to a log file. The format of the access log is highly configurable. The location and content of the access log are controlled by the CustomLog directive. Default apache access log file location: Pass4sure 200-120 RHEL / Red Hat / CentOS / Fed
In submit Tutorials Questions Projects Meetups Main Site logo-horizontal DigitalOcean Community Menu Tutorials Questions Projects Meetups Main Site Sign Up Log In submit View All Results By: Sadequl Hussain Subscribe Subscribed Share Contents Contents We hope you find this tutorial helpful. In addition to guides like this one, we provide simple cloud infrastructure for developers. Learn more → 9 How To View and Configure Linux Logs on Ubuntu and Centos Posted Dec 17, 2013 164.4k views Logging Linux Basics CentOS Ubuntu Debian Introduction Linux system administrators often need to look at log files for troubleshooting purposes. In fact, this is the first thing any sysadmin would do. Linux and the applications that run on it can generate all different types of messages, which are recorded in various log files. Linux uses a set of configuration files, directories, programs, commands and daemons to create, store and recycle these log messages. Knowing where the system keeps its log files and how to make use of related commands can therefore help save valuable time during troubleshooting. In this tutorial, we will have a look at different parts of the Linux logging mechanism. Disclaimer The commands in this tutorial were tested in plain vanilla installations of CentOS 6.4, Ubuntu 12 and Debian 7. Default Log File Location The default location for log files in Linux is /var/log. You can view the list of log files in this directory with a simple ls -l /var/log command. This is what I see in my CentOS system: [root@TestLinux ~]# ls -l /var/log total 1472 -rw-------. 1 root root 4524 Nov 15 16:04 anaconda.ifcfg.log -rw-------. 1 root root 59041 Nov 15 16:04 anaconda.log -rw-------. 1 root root 42763 Nov 15 16:04 anaconda.program.log -rw-------. 1 root root 299910 Nov 15 1