Merge pull request #15317 from rhatdan/debug

Add compatibility support for --debug flag from docker

cmd/podman/root.go

@@ -71,7 +71,10 @@ var (
 		DisableFlagsInUseLine: true,
 	}
 
-	logLevel       = "warn"
+	defaultLogLevel = "warn"
+	logLevel        = defaultLogLevel
+	debug           bool
+
 	useSyslog      bool
 	requireCleanup = true
 )
@@ -310,6 +313,13 @@ func persistentPostRunE(cmd *cobra.Command, args []string) error {
 
 func loggingHook() {
 	var found bool
+	if debug {
+		if logLevel != defaultLogLevel {
+			fmt.Fprintf(os.Stderr, "Setting --log-level and --debug is not allowed\n")
+			os.Exit(1)
+		}
+		logLevel = "debug"
+	}
 	for _, l := range common.LogLevels {
 		if l == strings.ToLower(logLevel) {
 			found = true
@@ -465,6 +475,9 @@ func rootFlags(cmd *cobra.Command, opts *entities.PodmanConfig) {
 	pFlags.StringVar(&logLevel, logLevelFlagName, logLevel, fmt.Sprintf("Log messages above specified level (%s)", strings.Join(common.LogLevels, ", ")))
 	_ = rootCmd.RegisterFlagCompletionFunc(logLevelFlagName, common.AutocompleteLogLevel)
 
+	pFlags.BoolVar(&debug, "debug", false, "Docker compatibility, force setting of log-level")
+	_ = pFlags.MarkHidden("debug")
+
 	// Only create these flags for ABI connections
 	if !registry.IsRemote() {
 		runtimeflagFlagName := "runtime-flag"

test/system/001-basic.bats

@@ -190,6 +190,9 @@ See 'podman version --help'" "podman version --remote"
     run_podman --log-level=error   info
     run_podman --log-level=fatal   info
     run_podman --log-level=panic   info
+    run_podman --debug   info
+    run_podman 1 --debug --log-level=panic info
+    is "$output" "Setting --log-level and --debug is not allowed"
 }
 
 # vim: filetype=sh