google/mtail

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extract internal monitoring data from application logs for collection in a timeseries database

Stars: 4k
Forks: 392
Open beginner issues: 0
Indexed issues: 42

Dominant language: Go
License: Apache-2.0
Last GitHub push: Feb 26, 2026
Latest indexed: Sep 16, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted
PR merge metrics: No merged PRs in 30d

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42 open issues indexed

Initialise metrics at startup Open

enhancement mtail-Language/VM

google/mtail#180 · 16 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
const patterns can't be used by themselves, need // prefix Open

bug mtail-Language/VM

google/mtail#191 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Consider publishing tailer separately Open

enhancement process

google/mtail#199 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Runtime errors should be more visible to users Open

enhancement mtail-Operating

google/mtail#221 · 14 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
type inference converts "05" to "5" which then isn't usable in strptime() Open

bug mtail-Language/VM

google/mtail#230 · 10 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Better clearer documentation on using hidden string variables Open

enhancement mtail-Language/VM

google/mtail#234 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Switch off standart mtail metric Open

mtail-Operating question

google/mtail#259 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Times are not represented as Time in the VM so lose precision when compared Open

enhancement mtail-Language/VM

google/mtail#263 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Add a way to test if a capture group has been defined in current scope Open

enhancement mtail-Language/VM

google/mtail#267 · 6 comments · 4 reactions · 0 assignees · Indexed Sep 16, 2026
systemd .service startup file? Open

enhancement help wanted mtail-Operating

google/mtail#314 · 11 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Temporary Variables Open

enhancement mtail-Language/VM

google/mtail#333 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
language: regex concatenation not working as expected Open

bug mtail-Language/VM

google/mtail#340 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
NFS: Stale file handle - after log cycling occurs. Open

bug help wanted mtail-Log Tailing

google/mtail#505 · 21 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
mtail doesn't follow log rotation when running under WSL and docker Open

bug help wanted mtail-Log Tailing

google/mtail#531 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Option to register mtail as a windows service in windows binaries Open

enhancement help wanted mtail-Operating

google/mtail#542 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
"Capture group reference appears to be unused" with integer names Open

bug mtail-Language/VM

google/mtail#581 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 16, 2026
VM attempts to parse IP addr as float Open

bug mtail-Language/VM

google/mtail#590 · 2 comments · 1 reaction · 1 assignee · Indexed Sep 16, 2026
index out of range in vm.go:342 Open

bug mtail-Language/VM

google/mtail#608 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
collected metric ... was collected before with the same name and label values Open

bug mtail-Language/VM

google/mtail#636 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Can you please add mtail helm-chart which we can deploy in klubernetes environment Open

enhancement help wanted mtail-Operating

google/mtail#678 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Request for pushing metrics to pushgateway Open

enhancement mtail-Operating

google/mtail#679 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
new feature: need exemplar support Open

enhancement mtail-Language/VM

google/mtail#684 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Can I write unparsed log lines to another log? Open

enhancement mtail-Log Tailing

google/mtail#724 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
mtail fails to read log file with initially incorrect permissions that are later fixed Open

bug mtail-Log Tailing

google/mtail#725 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Can mtail customize annotation? Open

enhancement help wanted

google/mtail#748 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Limit keyword not release memory after delete oldest metrics. Open

bug mtail-Language/VM

google/mtail#763 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
mtail locks watched files on Windows and prevents deletion Open

help wanted mtail-Log Tailing

google/mtail#807 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
`limit` keyword does not work with the `hidden` keyword Open

bug mtail-Language/VM

google/mtail#837 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Tag 3.0.6 created but binaries not released Open

google/mtail#900 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
mtail fails to scrape with > 70k metrics presented. Open

google/mtail#903 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
This repo is obsolete, please follow `jaqx0r/mtail` instead Open

google/mtail#929 · 8 comments · 3 reactions · 0 assignees · Indexed Sep 16, 2026
Can mtail be integrated into my own Go program? Open

google/mtail#955 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Suggestion: Docker container logs as input log Open

google/mtail#965 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
How to match multi-line text in mtail (e.g., for PostgreSQL CSV logs with multi-line statements) Open

google/mtail#970 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Why was fsnotify removed in favor of polling, especially in large log directories? Open

google/mtail#971 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Is there documentation on how mtail's runtime and parser are implemented? Open

google/mtail#972 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
OSS-Fuzz issue 471491052 Open

google/mtail#994 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
OSS-Fuzz issue 471522071 Open

google/mtail#995 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
OSS-Fuzz issue 471517925 Open

google/mtail#996 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
OSS-Fuzz issue 472581388 Open

google/mtail#997 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Float divide-by-zero silently writes +Inf/NaN to a metric (int errors): intended? Open

google/mtail#1005 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Enforce metric `limit` at datum creation? (GetDatum has a // TODO Check m.Limit) Open

google/mtail#1006 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026

google/mtail

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