From Fedora Project Wiki
No edit summary |
|||
| (10 intermediate revisions by the same user not shown) | |||
| Line 1: | Line 1: | ||
= Configure | = Configure syslog to log kernel debug messages = | ||
In standard configuration system logger does not log kernel debug messages. Usually this is not a problem as debug messages | |||
can be read by dmesg. However kernel internal dmesg buffer is limited (on Fedora limit is 512KB), only most recent messages | |||
can be read from the buffer. When lot of information is printed, it can be lost. Below configuration allow to log all kernel | |||
messages to /var/log/kernel file. | |||
* Add this line in /etc/rsyslog.conf | |||
<pre> | <pre> | ||
OTHER_ARGS="-u -f /var/log/messages -P /var/run/wpa_supplicant.pid" | kern.* /var/log/kernel | ||
</pre> | |||
* Restart services | |||
<pre> | |||
/etc/init.d/rsyslog restart | |||
</pre> | |||
= Configure syslog to debug kernel and wpa_supplicant = | |||
Sometimes is needed to have kernel debug messages together with wpa_supplicant logged | |||
in one place. Below changes allow to do this. | |||
* Edit /etc/sysconfig/wpa_supplicant file to log into /var/log/messages | |||
<pre> | |||
OTHER_ARGS="-u -f /var/log/messages -dd -P /var/run/wpa_supplicant.pid" | |||
</pre> | </pre> | ||
* Edit /etc/rsyslog.conf to log all kernel messages into /var/log/messages | * Edit /etc/rsyslog.conf file to log all kernel messages into /var/log/messages | ||
<pre> | <pre> | ||
kern.*;*.info;mail.none;authpriv.none;cron.none /var/log/messages | kern.*;*.info;mail.none;authpriv.none;cron.none /var/log/messages | ||
| Line 16: | Line 33: | ||
</pre> | </pre> | ||
= Configure for | = Configure syslog for debug kernel and wpa_supplicant together with NetworkManager= | ||
Requires settings from above and below changes. | |||
* Edit /etc/init.d/NetworkManager to enable verbose debug | * Edit /etc/init.d/NetworkManager file to enable verbose debug | ||
<pre> | <pre> | ||
daemon --pidfile $pidfile --check $servicename $processname --pid-file=$pidfile --log-level=DEBUG | daemon --pidfile $pidfile --check $servicename $processname --pid-file=$pidfile --log-level=DEBUG | ||
| Line 31: | Line 45: | ||
<pre> | <pre> | ||
/etc/init.d/NetworkManager restart | /etc/init.d/NetworkManager restart | ||
</pre> | </pre> | ||
Latest revision as of 13:28, 24 January 2011
Configure syslog to log kernel debug messages
In standard configuration system logger does not log kernel debug messages. Usually this is not a problem as debug messages can be read by dmesg. However kernel internal dmesg buffer is limited (on Fedora limit is 512KB), only most recent messages can be read from the buffer. When lot of information is printed, it can be lost. Below configuration allow to log all kernel messages to /var/log/kernel file.
- Add this line in /etc/rsyslog.conf
kern.* /var/log/kernel
- Restart services
/etc/init.d/rsyslog restart
Configure syslog to debug kernel and wpa_supplicant
Sometimes is needed to have kernel debug messages together with wpa_supplicant logged in one place. Below changes allow to do this.
- Edit /etc/sysconfig/wpa_supplicant file to log into /var/log/messages
OTHER_ARGS="-u -f /var/log/messages -dd -P /var/run/wpa_supplicant.pid"
- Edit /etc/rsyslog.conf file to log all kernel messages into /var/log/messages
kern.*;*.info;mail.none;authpriv.none;cron.none /var/log/messages
- Restart services
/etc/init.d/wpa_supplicant restart /etc/init.d/rsyslog restart
Configure syslog for debug kernel and wpa_supplicant together with NetworkManager
Requires settings from above and below changes.
- Edit /etc/init.d/NetworkManager file to enable verbose debug
daemon --pidfile $pidfile --check $servicename $processname --pid-file=$pidfile --log-level=DEBUG
- Restart services
/etc/init.d/NetworkManager restart