klog.V(1).Info("succesfully created deployment clientset in detailed")
is not priniting anything in command line though i imported
"github.com/kubernetes/klog"
.how to use debug level klogs using verbosity levels
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Please show all relevant code.Jonathan Hall– Jonathan Hall2020-02-13 09:43:36 +00:00Commented Feb 13, 2020 at 9:43
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1I have the same issue. I grabbed code that uses klog from here github.com/kubernetes/kubernetes/tree/release-1.16/test/images/…. I tied also to add klog.SetOutput(os.Stdout) within the init method but I do not see any expted log entries in the stdout. I assume the klog.V(N)... match the -v N flag whe you use kubectll logs. Using "go.uber.org/zap" I see logs in stdout as expectedCrixo– Crixo2020-02-15 16:24:40 +00:00Commented Feb 15, 2020 at 16:24
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2 Answers
You need to pass "-v=1" to print it.
"-v=n" will print log entries with verbosity <= n.
Besides, if you write the program, you should also parse klog args before they take effect, put the code below in the begining of your main function:
klog.InitFlags(nil) // initializing the flags
defer klog.Flush() // flushes all pending log I/O
flag.Parse() // parses the command-line flags
klog.Info("now you can see me")
Comments
It will show output only if verbosity is enabled
3 Comments
Crixo
Could you please show me how and where enable it? Thanks
Sai Vamsi
enabling in the sense, if you are debugging ur code it will be enabled automatically .if u are running normally without debug it will be off
Crixo
That's what I did it to enable the desired verbosity via flag (): func main() { loggingFlags := flag.NewFlagSet("webhook", flag.ExitOnError) loggingFlags.StringVar(....). klog.InitFlags(loggingFlags) loggingFlags.Parse(os.Args[1:]) ....