-
Notifications
You must be signed in to change notification settings - Fork 90
/
kurl_drain_node.go
45 lines (40 loc) · 1.11 KB
/
kurl_drain_node.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
package handlers
import (
"context"
"net/http"
"github.com/gorilla/mux"
"github.com/replicatedhq/kots/pkg/k8sutil"
"github.com/replicatedhq/kots/pkg/kurl"
"github.com/replicatedhq/kots/pkg/logger"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
func (h *Handler) DrainNode(w http.ResponseWriter, r *http.Request) {
client, err := k8sutil.GetClientset()
if err != nil {
logger.Error(err)
w.WriteHeader(http.StatusInternalServerError)
return
}
ctx := context.Background()
nodeName := mux.Vars(r)["nodeName"]
node, err := client.CoreV1().Nodes().Get(ctx, nodeName, metav1.GetOptions{})
if err != nil {
if errors.IsNotFound(err) {
logger.Errorf("Failed to drain node %s: not found", nodeName)
w.WriteHeader(http.StatusNotFound)
return
}
logger.Error(err)
w.WriteHeader(http.StatusInternalServerError)
return
}
// This pod may get evicted and not be able to respond to the request
go func() {
if err := kurl.DrainNode(ctx, client, node); err != nil {
logger.Error(err)
return
}
logger.Infof("Node %s successfully drained", node.Name)
}()
}