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T759: Update wiki.vyos.net syslog config options

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hagbard 2018-10-03 11:02:09 -07:00
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docs/ch12-system.rst
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@ -66,3 +66,113 @@ remote system:
loadkey jsmith scp://devuser@dev001.vyos.net/home/devuser/.ssh/dev.pub
Syslog
======
Per default vyos has minimal syslog logging enabled which is stored and rotated locally.
Errors will be always logged to a local file, which includes local7 error messages, emergency messages will be sent to the console too.
Configuration
-------------
To configure syslog, you need to switch into configuration mode.
Logging to serial console
^^^^^^^^^^^^^^^^^^^^^^^^^
The below would log all messages to /dev/console.
.. code-block:: sh
set system syslog console facility all level all
Use the <tab> function to display all facilities and levels which can be configured.
.. code-block:: sh
vyos@vyos# set system syslog console facility <TAB>
Possible completions:
> all All facilities excluding "mark"
> auth Authentication and authorization
> authpriv Non-system authorization
> cron Cron daemon
> daemon System daemons
> kern Kernel
> lpr Line printer spooler
> mail Mail subsystem
> mark Timestamp
> news USENET subsystem
> protocols depricated will be set to local7
> security depricated will be set to auth
> syslog Authentication and authorization
> user Application processes
> uucp UUCP subsystem
> local0 Local facility 0
> local1 Local facility 1
> local2 Local facility 2
> local3 Local facility 3
> local4 Local facility 4
> local5 Local facility 5
> local6 Local facility 6
> local7 Local facility 7
vyos@vyos# set system syslog console facility all level <TAB>
Possible completions:
emerg Emergency messages
alert Urgent messages
crit Critical messages
err Error messages
warning Warning messages
notice Messages for further investigation
info Informational messages
debug Debug messages
all Log everything
Logging to a custom file
^^^^^^^^^^^^^^^^^^^^^^^^^
Logging to a custom file, rotation size and the number of rotate files left on the system can be configured.
.. code-block:: sh
set system syslog file <FILENAME> facility <FACILITY> level <LEVEL>
set system syslog file <FILENAME> archive file <NUMBER OF FILES>
set system syslog file FILENAME archive size <FILESIZE>
The very same setting can be applied to the global configuration, to modify the defaults for the global logging.
Logging to a remote host
^^^^^^^^^^^^^^^^^^^^^^^^
Logging to a remote host leaves the local logging configuration intact, it can be configured in parallel.
You can log ro multiple hosts at the same time, using either tcp or udp. The default is sending the messages via udp.
**Logging to a remote host using udp**
.. code-block:: sh
set system syslog host 10.1.1.1 facility all level all
<optional>
set system syslog host 10.1.1.1 facility all protocol udp
**Logging to a remote host using tcp**
.. code-block:: sh
set system syslog host 10.1.1.2 facility all level all
set system syslog host 10.1.1.2 facility all protocol tcp
Logging to a local user account
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
If logging to a local useraccount is configured, all defined log messages are display on the console if the local user is logged in,
if the user is not logged in, no messages are being displayed.
.. code-block:: sh
set system syslog user <LOCAL_USERNAME> facility <FACILITY> level <LEVEL>