View source for CLI - Log

=== Log ===
You can see various logs that are located in each device using the <code>show log</code> command.
<pre>
LYSH@MyHostName# show log {name} [-h] [-n NUMBER] [-w] [keyword]
optional arguments:
  -h, --help                      show this help message and exit
  -n [NUMBER], --number [NUMBER]  enter 0 to show all logs, and enter a value greater than 0 to show as much as the value entered
  -w, --watch                     show the log or setup status in real time
</pre>
The below table shows you all kinds of logs. Some logs are generated in real-time during the runtime of a specific service, which is called "Runtime log".

If the [[CLI - Services(daemons) | Runtime log]] of a specific service is disabled, logs are not generated.
Therefore, you should verify the status of the Runtime log by the <code>show service</code> command. If disabled, you need to [[CLI - Services(daemons) | enable]] it.

{| class="wikitable"
! style='width:150px' | log name !! log description 
|-
| apache2 || It is the apache2 access log.
|-
| dhcpv4 ||  It is the logs that were generated in real-time during the runtime of the [[ImRAD services(daemons) | dhcpv4]] service. 
|-
| dhcpv6 || It is the logs that were generated in real-time during the runtime of the [[ImRAD services(daemons) | dhcpv6]] service. 
|-
| failover || It is the logs that were generated in real-time during the runtime of the [[ImRAD services(daemons) | failover]] service. 
|-
| logexp || It is the logs that were generated in real-time during the runtime of the [[ImRAD services(daemons) | logexp]] service. 
|-
| lsyslog || It is the Syslog generated from the imRAD services.
|-
| mysqlerror || It is the Syslog generated from the imRAD services.
|-
| radius || It is the logs that were generated in real-time during the runtime of the [[ImRAD services(daemons) | radiusd]] service. 
|-
| smgr|| It is the logs that were generated in real-time during the runtime of the [[ImRAD services(daemons) | smgr]] service. 
|-
| startup|| It is the logs that were generated in real-time during the runtime of the [[ImRAD services(daemons) | startup]] service. 
|-
| syslog|| It is the Syslog.
|-
| ufw || It is logs of all blocked packets not matching the defined [[CLI - ufw | ufw]] policy.
|-
| update|| It is the System update log.
|-
|}

==== Displaying logs ====
<pre>
LYSH@MyHostName# show log apache2		// Display all apache2 logs
LYSH@MyHostName# show log radius		// Display all radius logs
</pre>

==== Displaying last n logs ====
<pre>
LYSH@MyHostName# show log apache2 -n 10		// Display only the last 10 apache2 logs
LYSH@MyHostName# show log radius -n 10		// Display only the last 10 radius logs
</pre>

==== Displaying last n logs with keyword ====
<pre>
LYSH@MyHostName# show log apache2 -n 10	request	// Display only the last 10 apache2 logs filtered by "request" 
LYSH@MyHostName# show log radius -n 10	accept	// Display only the last 10 radius logs filtered by "request" 
</pre>

==== Displaying logs in real-time ====
<pre>
LYSH@MyHostName# show log apache2 -w		// Display the apache2 logs in real-time
LYSH@MyHostName# show log radius -w		// Display the radius logs in real-time
</pre>

==== Displaying logs in real-time with keyword ====
<pre>
LYSH@MyHostName# show log apache2 -w request	// Display the apache2 logs filtered by "request" in real-time
LYSH@MyHostName# show log radius -w accept	// Display the radius logs filtered by "accept" in real-time
</pre>

==== keyword with logical operator ====
The <code>&</code> is the logical "AND" operator and the <code>|</code> is the logical "OR" operator.
<pre>
LYSH@MyHostName# show log "request&reply"		// Display the apache2 logs having both "request" and "reply"
LYSH@MyHostName# show log "request|reply"		// Display the apache2 logs having either "request" or "reply"
</pre>

''Note that you'd better put a keyword in quotation marks.''