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feat(logcli): add --log.level parameter #19136

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Merged
poyzannur merged 5 commits into from
Oct 2, 2025
Merged

feat(logcli): add --log.level parameter #19136

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4931c7a
Logcli: add --log.level parameter
bboreham Sep 9, 2025
59a720c
Fix lint errors
bboreham Sep 10, 2025
3aefd87
Merge branch 'main' into logcli-loglevel
bboreham Sep 12, 2025
6f90535
Merge branch 'main' into logcli-loglevel
bboreham Sep 18, 2025
d08ef14
Merge branch 'main' into logcli-loglevel
bboreham Oct 2, 2025
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8 changes: 8 additions & 0 deletions cmd/logcli/main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,8 @@ import (
"time"

"github.com/alecthomas/kingpin/v2"
dskit_log "github.com/grafana/dskit/log"
dskit_server "github.com/grafana/dskit/server"
"github.com/prometheus/common/config"
"github.com/prometheus/common/version"

Expand All @@ -26,6 +28,7 @@ import (
"github.com/grafana/loki/v3/pkg/logcli/volume"
"github.com/grafana/loki/v3/pkg/logql/syntax"
_ "github.com/grafana/loki/v3/pkg/util/build"
util_log "github.com/grafana/loki/v3/pkg/util/log"
)

var (
Expand All @@ -35,6 +38,7 @@ var (
Default("false").
Short('q').
Bool()
logLevel = app.Flag("log.level", "Log level").Default("error").Enum("error", "warning", "info", "debug")
statistics = app.Flag("stats", "Show query statistics").Default("false").Bool()
outputMode = app.Flag("output", "Specify output mode [default, raw, jsonl]. raw suppresses log labels and timestamp.").
Default("default").
Expand Down Expand Up @@ -357,6 +361,10 @@ func main() {

cmd := kingpin.MustParse(app.Parse(os.Args[1:]))

var dLevel dskit_log.Level
_ = dLevel.Set(*logLevel)
util_log.InitLogger(&dskit_server.Config{LogLevel: dLevel}, nil, true)

if cpuProfile != nil && *cpuProfile != "" {
cpuFile, err := os.Create(*cpuProfile)
if err != nil {
Expand Down
1 change: 1 addition & 0 deletions docs/sources/query/logcli/getting-started.md
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Expand Up @@ -205,6 +205,7 @@ Flags:
--[no-]envproxy Use ProxyFromEnvironment to use net/http
ProxyFromEnvironment configuration, eg HTTP_PROXY
($LOKI_ENV_PROXY)
--log.level Only log messages with the given severity or above. Valid levels: [debug, info, warn, error]

Commands:
help [<command>...]
Expand Down