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Important: This documentation is about an older version. It's relevant only to the release noted, many of the features and functions have been updated or replaced. Please view the current version.
Enterprise
Query examples
Some useful query examples here.
Log Query examples
Examples that filter on IP address
Return log lines that are not within a range of IPv4 addresses:
logql{job_name="myapp"} != ip("192.168.4.5-192.168.4.20")
This example matches log lines with all IPv4 subnet values
192.168.4.5/16
except IP address192.168.4.2
:logql{job_name="myapp"} | logfmt | addr = ip("192.168.4.5/16") | addr != ip("192.168.4.2")
Examples that aid in security evaluation
Extract the user and IP address of failed logins from Linux
/var/log/secure
logql{job="security"} |~ "Invalid user.*" | regexp "(^(?P<user>\\S+ {1,2}){8})" | regexp "(^(?P<ip>\\S+ {1,2}){10})" | line_format "IP = {{.ip}}\tUSER = {{.user}}"
Get successful logins from Linux
/var/log/secure
logql{job="security"} != "grafana_com" |= "session opened" != "sudo: " |regexp "(^(?P<user>\\S+ {1,2}){11})" | line_format "USER = {{.user}}"
Metrics Query examples
Return the per-second rate of all non-timeout errors within the last minutes per host for the MySQL job, and only include errors whose duration is above ten seconds.
sum by (host) (rate({job="mysql"} |= "error" != "timeout" | json | duration > 10s [1m]))
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Related resources from Grafana Labs
Additional helpful documentation, links, and articles:
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Scaling and securing your logs with Grafana Loki
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