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MGMT-15902: Trigger reboots for node event when day2 node moves to done
This is done for kube api client only when spoke kubeconfig is available. The implementation is done using debug command (as in oc command). The number of reboots are counted by 'last reboot' linux command.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| package oc | ||
|
|
||
| import ( | ||
| "io" | ||
| "os" | ||
| "strings" | ||
|
|
||
| "github.com/go-errors/errors" | ||
| "github.com/openshift/assisted-service/pkg/executer" | ||
| ) | ||
|
|
||
| type Debug interface { | ||
| RebootsForNode(nodeName string) (int, error) | ||
| } | ||
|
|
||
| type debug struct { | ||
| kubeconfig []byte | ||
| } | ||
|
|
||
| func NewDebug(kubeconfig []byte) Debug { | ||
| return &debug{ | ||
| kubeconfig: kubeconfig, | ||
| } | ||
| } | ||
|
|
||
| func (d *debug) kubeconfigFile() (string, error) { | ||
| var n int | ||
|
|
||
| f, err := os.CreateTemp("", "kubeconfig") | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| defer f.Close() | ||
| numWritten := 0 | ||
| for n, err = f.Write(d.kubeconfig[numWritten:]); err == io.ErrShortWrite; n, err = f.Write(d.kubeconfig[numWritten:]) { | ||
| numWritten += n | ||
| } | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| return f.Name(), nil | ||
| } | ||
|
|
||
| func (d *debug) runDebug(entity string, args ...string) (string, string, error) { | ||
| kubeconfigFname, err := d.kubeconfigFile() | ||
| if err != nil { | ||
| return "", "", err | ||
| } | ||
| defer func() { | ||
| _ = os.RemoveAll(kubeconfigFname) | ||
| }() | ||
| execArgs := append([]string{ | ||
| "debug", | ||
| "--kubeconfig", | ||
| kubeconfigFname, | ||
| entity, | ||
| "--", | ||
| }, args...) | ||
| exec := &executer.CommonExecuter{} | ||
| out, errOut, exitCode := exec.Execute("oc", execArgs...) | ||
| if exitCode != 0 { | ||
| return "", "", errors.Errorf("oc debug failed to execute: %s", errOut) | ||
| } | ||
| return out, errOut, nil | ||
| } | ||
|
|
||
| func (d *debug) RebootsForNode(nodeName string) (int, error) { | ||
| out, _, err := d.runDebug("node/"+nodeName, | ||
| "chroot", | ||
| "/host", | ||
| "last", | ||
| "reboot") | ||
| if err != nil { | ||
| return 0, err | ||
| } | ||
| lines := strings.Split(out, "\n") | ||
| numReboots := 0 | ||
| for _, line := range lines { | ||
| if strings.HasPrefix(line, "reboot ") { | ||
| numReboots++ | ||
| } | ||
| } | ||
| return numReboots, nil | ||
| } |
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