Set it to log every 10 seconds and make a quick graph: while `true` do uptime |. Just for fun, I’ll extract the load average (if you want to know all the other things you can do with extracted fields visit the Log Insight Developer Center page ) For instance, let’s log the output of the system ‘uptime’ command with uptime |. That will let us send something in through the standard input and send it to Log Insight over syslog. ![]() Super easy to do by hand, let’s turn that into a handy bash script I like to call logger.sh: #!/bin/bashĮcho "$date $host $message" | nc -w 1 -u $server $port You can do this with NetCat for instance: nc -u 514 Simply construct a UDP packet with that payload and send it to port 514 on your Log Insight server. The timestamp, hostname, tag and message are just as they appear in the logs, so what you send to the syslog port looks like this: Month DayOfMonth Hour:Minute:Second Hostname Tag: Message The priority is a number that codes for the facility and the “level surrounded by brackets, we’ll use in our examples and you can find the complete code table on Wikipedia. I’ll show you how easy it is to send syslog messages to Log Insight from a handful of scripting languages.įirst, the basics: a syslog message is made from the priority, timestamp, hostname, tag and message – in that order – of the line you want to log. If you are wondering how syslog became so popular, it is because it is easy. ![]() Now it is available for every operating system with commercial software available from multiple vendors. It’s hard to believe that the syslog protocol was only a part of sendmail at first. Why did the Log Insight team choose syslog, invented way back in the 80s, as the input protocol for Log Insight? The 80s was the decade that brought us CD-ROMs, Doppler Radar and Digital Cell Phones.
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