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OpenSuSE 11.1 Quick Start Guide
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13.1 Finding and Gathering Information

Linux logs things in a fair amount of detail. There are several places to look when you have problems with your system, most of which are standard to Linux systems in general and some of which are peculiar to openSUSE systems. Most log files can also be viewed with YaST (Miscellaneous > Start-Up Log).

YaST offers the possibility to collect all system information needed by the support team. Use Miscellaneous > Support Query. Select the problem category. When all information is gathered, attach it to your support request.

The following is a list of the most commonly checked log files and what they typically contain.

Table 13-1 Log Files

Log File

Description

~/.xsession-errors

Messages from the desktop applications currently running. The ~ is the home directory of the current user.

/var/log/apparmor/

Log files from AppArmor, see Novell AppArmor Administration Guide, (↑ Novell AppArmor Administration Guide ) for detailed information.

/var/log/audit/audit.log

Log file from Audit to track any access to files, directories, or resources of your system and trace system calls.

/var/log/boot.msg

Messages from the kernel during the boot process.

/var/log/mail.*

Messages from the mail system.

/var/log/messages

Ongoing messages from the kernel and system log daemon when running.

/var/log/NetworkManager

Log file from NetworkManager to collect problems with network connectivity

/var/log/samba/

Directory containing Samba server and client log messages.

/var/log/SaX.log

Hardware messages from the SaX display and KVM system.

/var/log/warn

All messages from the kernel and system log daemon assigned WARNING level or higher.

/var/log/wtmp

Binary file containing user login records for the current machine session. View it with last.

/var/log/Xorg.*.log

Various start-up and runtime logs from the X Window system. It is useful for debugging failed X start-ups.

/var/log/YaST2/

Directory containing YaST's actions and their results.

/var/log/zypper.log

Log file of zypper.

Apart from log files, your machine also supplies you with information about the running system. See System Information

Table 13-2 System Information

File

Description

/proc/cpuinfo

This displays processor information, including its type, make, model, and performance.

/proc/dma

This shows which DMA channels are currently being used.

/proc/interrupts

This shows which interrupts are in use and how many of each have been in use.

/proc/iomem

This displays the status of I/O (input/output) memory.

/proc/ioports

This shows which I/O ports are in use at the moment.

/proc/meminfo

This displays memory status.

/proc/modules

This displays the individual modules.

/proc/mounts

This displays devices currently mounted.

/proc/partitions

This shows the partitioning of all hard disks.

/proc/version

This displays the current version of Linux.

Linux comes with a number of tools for system analysis and monitoring. See Section 11.0, System Monitoring Utilities, (↑ Reference ) for a selection of the most important ones used in system diagnostics.

Each scenario included in the following begins with a header describing the problem followed by a paragraph or two offering suggested solutions, available references for more detailed solutions, and cross-references to other scenarios that might be related.

OpenSuSE 11.1 Quick Start Guide
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  Published under the terms fo the GNU General Public License Design by Interspire