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Mario Trangoni 7fa2e37607 postfix_exporter.go: Fix some gosec issues. 
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$ gometalinter --vendor ./...
postfix_exporter.go:249:⚠️ Potential file inclusion via variable,MEDIUM,HIGH (gosec)
postfix_exporter.go:80:⚠️ Errors unhandled.,LOW,HIGH (gosec)
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2018-12-04 16:48:06 +01:00
.gitignore Initialize histograms to zero 2018-02-07 14:24:08 +01:00
build_static.sh build_static.sh updated to ubuntu docker container to support systemd journal usage. 2018-02-02 11:51:33 +01:00
CHANGELOG.md Update readme and changelog for release. 2018-05-04 12:22:34 +02:00
Dockerfile add Dockefile 2018-11-04 02:57:56 +01:00
LICENSE Check in an initial copy of our Postfix metrics exporter. 2017-02-17 15:29:37 +01:00
nosystemd.go Add nosystemd build tag 2018-04-19 13:34:18 +02:00
postfix_exporter.go postfix_exporter.go: Fix some gosec issues. 2018-12-04 16:48:06 +01:00
README.md Update readme and changelog for release. 2018-05-04 12:22:34 +02:00
systemd.go Add nosystemd build tag 2018-04-19 13:34:18 +02:00

README.md

Prometheus Postfix exporter

This repository provides code for a Prometheus metrics exporter for the Postfix mail server. This exporter provides histogram metrics for the size and age of messages stored in the mail queue. It extracts these metrics from Postfix by connecting to a UNIX socket under /var/spool.

In addition to that, it counts events by parsing Postfix's log entries, using regular expression matching. The log entries are retrieved from the systemd journal or from a log file.

Please refer to this utility's main() function for a list of supported command line flags.

Events from log file

The log file is truncated when processed, so that the next iteration doesn't interpret the same lines twice. It makes sense to configure your syslogger to multiplex log entries to a second file:

mail.* -/var/log/postfix_exporter_input.log

The path to the log file is specified with the -postfix.logfile_path flag.

Events from systemd

Retrieval from the systemd journal is enabled with the -systemd.enable flag. This overrides the log file setting. It is possible to specify the unit (with -systemd.unit) or slice (with -systemd.slice). Additionally, it is possible to read the journal from a directory with the -systemd.journal_path flag.

Build options

Default the exporter is build with systemd journal functionality (but it is disabled at default). Because the systemd headers are required for building with systemd, there is an option to build the exporter without systemd. Use the build tag nosystemd.

go build -tags nosystemd