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added fixed reboot time for single node #566

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added fixed reboot time for single node #566

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28 changes: 22 additions & 6 deletions cmd/kured/main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -73,12 +73,13 @@ var (
postRebootNodeLabels []string
nodeID string

rebootDays []string
rebootStart string
rebootEnd string
timezone string
annotateNodes bool

rebootDays []string
rebootStart string
rebootEnd string
timezone string
annotateNodes bool
scheduleRebootTime string
scheduleRebootNode string
// Metrics
rebootRequiredGauge = prometheus.NewGaugeVec(prometheus.GaugeOpts{
Subsystem: "kured",
Expand Down Expand Up @@ -133,6 +134,8 @@ func NewRootCommand() *cobra.Command {
"delay reboot for this duration (default: 0, disabled)")
rootCmd.PersistentFlags().DurationVar(&period, "period", time.Minute*60,
"sentinel check period")
rootCmd.PersistentFlags().StringVar(&scheduleRebootTime, "schedule-reboot-time", "", "schedule reboot for this time")
rootCmd.PersistentFlags().StringVar(&scheduleRebootNode, "schedule-reboot-node", "", "schedule reboot for this node")
rootCmd.PersistentFlags().StringVar(&dsNamespace, "ds-namespace", "kube-system",
"namespace containing daemonset on which to place lock")
rootCmd.PersistentFlags().StringVar(&dsName, "ds-name", "kured",
Expand Down Expand Up @@ -680,6 +683,19 @@ func rebootAsRequired(nodeID string, rebootCommand []string, sentinelCommand []s
continue
}

rebootTime, _ := timewindow.ParseInputTime(stripQuotes(scheduleRebootTime))
timeDiff := time.Until(rebootTime)
if timeDiff < 0*time.Second {
timeDiff *= -1
}

if !rebootTime.IsZero() && scheduleRebootNode == os.Getenv("KURED_NODE_ID") && timeDiff <= period {
log.Printf("Reboot time for node: %s was scheduled at: %s\n", nodeID, stripQuotes(scheduleRebootTime))
log.Warnf("Sentinel command is about to be changed one single time on node: %s\n", nodeID)
sentinelCommand = buildHostCommand(1, []string{"test", "."})
time.Sleep(period + 1*time.Second)
}

if !rebootRequired(sentinelCommand) {
log.Infof("Reboot not required")
preferNoScheduleTaint.Disable()
Expand Down
12 changes: 12 additions & 0 deletions pkg/timewindow/timewindow.go
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,18 @@ type TimeWindow struct {
endTime time.Time
}

func ParseInputTime(schedTime string) (t time.Time, err error) {
timeFormats := []string{"Jan-02-06 15:04:05", "Jan-02-06 15:04:05 GMT+1", "January 2, 2006 15:04:05", "January 2, 2006 15:04:05 GMT+1", "01/02/06 15:04:05", "01/02/06 15:04:05 GMT+1",
"01/02/06 15:04:05 MST", "January 2, 2006 15:04:05 MST", time.Layout, time.ANSIC, time.UnixDate, time.RubyDate, time.RFC822, time.RFC822Z, time.RFC850,
time.RFC1123, time.RFC1123Z, time.RFC3339, time.RFC3339Nano, time.Kitchen}
for _, value := range timeFormats {
if t, err = time.Parse(value, schedTime); err == nil {
return
}
}
return
}

// New creates a TimeWindow instance based on string inputs specifying a schedule.
func New(days []string, startTime, endTime, location string) (*TimeWindow, error) {
tw := &TimeWindow{}
Expand Down