lib/envflag: do not allow unsupported form for boolean command-line flags in the form -boolFlag value

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4845
This commit is contained in:
Aliaksandr Valialkin 2023-08-17 13:26:10 +02:00
parent 1e1a30ed7f
commit cd9f86afe1
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2 changed files with 6 additions and 0 deletions

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@ -26,6 +26,7 @@ The following `tip` changes can be tested by building VictoriaMetrics components
* FEATURE: [vmbackup](https://docs.victoriametrics.com/vmbackup.html): add support for server-side copy of existing backups. See [these docs](https://docs.victoriametrics.com/vmbackup.html#server-side-copy-of-the-existing-backup) for details.
* BUGFIX: do not allow starting VictoriaMetrics components with improperly set boolean command-line flags in the form `-boolFlagName value`, since this leads to silent incomplete flags' parsing. This form should be replaced with `-boolFlagName=value`. See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4845).
* BUGFIX: [vmagent](https://docs.victoriametrics.com/vmagent.html): according to [the docs](https://docs.victoriametrics.com/vmagent.html#adding-labels-to-metrics) labels from `-remoteWrite.label` cmd-line flag are now added to the sent metrics just before they are pushed to the `-remoteWrite.url` (after all relabeling, including stream aggregation relabeling). In addition, it allows adding labels for identifying vmagent instances when using streaming aggregation in vmagents [cluster mode](https://docs.victoriametrics.com/vmagent.html#scraping-big-number-of-targets). See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4247) and [these docs](https://docs.victoriametrics.com/stream-aggregation.html#cluster-mode) for more details.
* BUGFIX: remove `DEBUG` logging when parsing `if` filters inside [relabeling rules](https://docs.victoriametrics.com/vmagent.html#relabeling-enhancements) and when parsing `match` filters inside [stream aggregation rules](https://docs.victoriametrics.com/stream-aggregation.html).
* BUGFIX: properly replace `:` chars in label names with `_` when `-usePromCompatibleNaming` command-line flag is passed to `vmagent`, `vminsert` or single-node VictoriaMetrics. This addresses [this comment](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3113#issuecomment-1275077071).

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@ -32,6 +32,11 @@ func ParseFlagSet(fs *flag.FlagSet, args []string) {
// Do not use lib/logger here, since it is uninitialized yet.
log.Fatalf("cannot parse flags %q: %s", args, err)
}
if fs.NArg() > 0 {
// See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4845
log.Fatalf("unprocessed command-line args left: %s; the most likely reason is missing `=` between boolean flag name and value; "+
"see https://pkg.go.dev/flag#hdr-Command_line_flag_syntax", fs.Args())
}
if !*enable {
return
}