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https://github.com/k3s-io/k3s.git
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dc18ef2e51
Using MAINPID breaks systemd's exit detection, as it stops watching the original pid, but is unable to watch the new pid as it is not a child of systemd itself. The best we can do is just notify when execing the child process. We also need to consolidate forking into a sigle place so that we don't end up with multiple levels of child processes if both redirecting log output and reaping child processes. Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
80 lines
1.6 KiB
Go
80 lines
1.6 KiB
Go
package cmds
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import (
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"flag"
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"fmt"
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"strconv"
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"sync"
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"time"
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"github.com/urfave/cli"
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)
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type Log struct {
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VLevel int
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VModule string
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LogFile string
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AlsoLogToStderr bool
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}
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var (
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LogConfig Log
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VLevel = cli.IntFlag{
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Name: "v",
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Usage: "(logging) Number for the log level verbosity",
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Destination: &LogConfig.VLevel,
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}
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VModule = cli.StringFlag{
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Name: "vmodule",
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Usage: "(logging) Comma-separated list of pattern=N settings for file-filtered logging",
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Destination: &LogConfig.VModule,
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}
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LogFile = cli.StringFlag{
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Name: "log,l",
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Usage: "(logging) Log to file",
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Destination: &LogConfig.LogFile,
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}
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AlsoLogToStderr = cli.BoolFlag{
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Name: "alsologtostderr",
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Usage: "(logging) Log to standard error as well as file (if set)",
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Destination: &LogConfig.AlsoLogToStderr,
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}
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logSetupOnce sync.Once
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)
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func InitLogging() error {
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var rErr error
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logSetupOnce.Do(func() {
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if err := forkIfLoggingOrReaping(); err != nil {
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rErr = err
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return
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}
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if err := checkUnixTimestamp(); err != nil {
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rErr = err
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return
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}
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setupLogging()
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})
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return rErr
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}
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func checkUnixTimestamp() error {
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timeNow := time.Now()
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// check if time before 01/01/1980
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if timeNow.Before(time.Unix(315532800, 0)) {
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return fmt.Errorf("server time isn't set properly: %v", timeNow)
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}
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return nil
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}
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func setupLogging() {
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flag.Set("v", strconv.Itoa(LogConfig.VLevel))
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flag.Set("vmodule", LogConfig.VModule)
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flag.Set("alsologtostderr", strconv.FormatBool(Debug))
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flag.Set("logtostderr", strconv.FormatBool(!Debug))
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}
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