main: Replace -debug with -log-level

Running crio with -debug is very verbose. Having more granularity
on the log level can be useful when e.g. only looking for errors.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

cmd/crio/main.go

@@ -197,10 +197,6 @@ func main() {
 			Name:  "conmon",
 			Usage: "path to the conmon executable",
 		},
-		cli.BoolFlag{
-			Name:  "debug",
-			Usage: "enable debug output for logging",
-		},
 		cli.StringFlag{
 			Name:  "listen",
 			Usage: "path to crio socket",
@@ -223,6 +219,11 @@ func main() {
 			Value: "text",
 			Usage: "set the format used by logs ('text' (default), or 'json')",
 		},
+		cli.StringFlag{
+			Name:  "log-level",
+			Usage: "log messages above specified level: debug, info (default), warn, error, fatal or panic",
+		},
+
 		cli.StringFlag{
 			Name:  "pause-command",
 			Usage: "name of the pause command in the pause image",
@@ -361,8 +362,13 @@ func main() {
 
 		logrus.SetFormatter(cf)
 
-		if c.GlobalBool("debug") {
-			logrus.SetLevel(logrus.DebugLevel)
+		if loglevel := c.GlobalString("log-level"); loglevel != "" {
+			level, err := logrus.ParseLevel(loglevel)
+			if err != nil {
+				return err
+			}
+
+			logrus.SetLevel(level)
 		}
 
 		if path := c.GlobalString("log"); path != "" {

docs/crio.8.md

@@ -13,13 +13,13 @@ crio - OCI Kubernetes Container Runtime daemon
 [**--config**=[*value*]]
 [**--conmon**=[*value*]]
 [**--cpu-profile**=[*value*]]
-[**--debug**]
 [**--default-transport**=[*value*]]
 [**--help**|**-h**]
 [**--insecure-registry**=[*value*]]
 [**--listen**=[*value*]]
 [**--log**=[*value*]]
 [**--log-format value**]
+[**--log-level value**]
 [**--pause-command**=[*value*]]
 [**--pause-image**=[*value*]]
 [**--registry**=[*value*]]
@@ -66,9 +66,6 @@ crio is meant to provide an integration path between OCI conformant runtimes and
 **--cpu-profile**=""
 set the CPU profile file path
 
-**--debug**
-  Enable debug output for logging
-
 **--default-transport**
   A prefix to prepend to image names that can't be pulled as-is.
 
@@ -105,6 +102,9 @@ set the CPU profile file path
 **--log-format**=""
   Set the format used by logs ('text' (default), or 'json') (default: "text")
 
+**--log-level**=""
+  log CRI-O messages above specified level: debug, info (default), warn, error, fatal or panic
+
 **--log-size-max**=""
   Maximum log size in bytes for a container (default: -1 (no limit))
 

kubernetes.md

@@ -36,7 +36,7 @@ Description=CRI-O daemon
 Documentation=https://github.com/kubernetes-incubator/cri-o
 
 [Service]
-ExecStart=/bin/crio --runtime /bin/runc --log /root/crio.log --debug
+ExecStart=/bin/crio --runtime /bin/runc --log /root/crio.log --log-level debug
 Restart=always
 RestartSec=10s
 

test/helpers.bash

@@ -245,7 +245,7 @@ function start_crio() {
 	fi
 	${netfunc} $POD_CIDR
 
-	"$CRIO_BINARY" --debug --config "$CRIO_CONFIG" & CRIO_PID=$!
+	"$CRIO_BINARY" --log-level debug --config "$CRIO_CONFIG" & CRIO_PID=$!
 	wait_until_reachable
 
 	run crictl inspecti redis:alpine

tutorial.md

@@ -163,7 +163,7 @@ Description=OCI-based implementation of Kubernetes Container Runtime Interface
 Documentation=https://github.com/kubernetes-incubator/cri-o
 
 [Service]
-ExecStart=/usr/local/bin/crio --debug
+ExecStart=/usr/local/bin/crio --log-level debug
 Restart=on-failure
 RestartSec=5