[root@k8s-master ~]# ip link help link
Usage: ip link add [link DEV] [ name ] NAME
                   [ txqueuelen PACKETS ]
                   [ address LLADDR ]
                   [ broadcast LLADDR ]
                   [ mtu MTU ] [index IDX ]
                   [ numtxqueues QUEUE_COUNT ]
                   [ numrxqueues QUEUE_COUNT ]
                   type TYPE [ ARGS ]

       ip link delete { DEVICE | dev DEVICE | group DEVGROUP } type TYPE [ ARGS ]

       ip link set { DEVICE | dev DEVICE | group DEVGROUP }
                          [ { up | down } ]
                          [ type TYPE ARGS ]
                          [ arp { on | off } ]
                          [ dynamic { on | off } ]
                          [ multicast { on | off } ]
                          [ allmulticast { on | off } ]
                          [ promisc { on | off } ]
                          [ trailers { on | off } ]
                          [ carrier { on | off } ]
                          [ txqueuelen PACKETS ]
                          [ name NEWNAME ]
                          [ address LLADDR ]
                          [ broadcast LLADDR ]
                          [ mtu MTU ]
                          [ netns { PID | NAME } ]
                          [ link-netnsid ID ]
                          [ alias NAME ]
                          [ vf NUM [ mac LLADDR ]
                                   [ vlan VLANID [ qos VLAN-QOS ] [ proto VLAN-PROTO ] ]
                                   [ rate TXRATE ]
                                   [ max_tx_rate TXRATE ]
                                   [ min_tx_rate TXRATE ]
                                   [ spoofchk { on | off} ]
                                   [ query_rss { on | off} ]
                                   [ state { auto | enable | disable} ] ]
                                   [ trust { on | off} ] ]
                                   [ node_guid { eui64 } ]
                                   [ port_guid { eui64 } ]
                          [ xdp { off |
                                  object FILE [ section NAME ] [ verbose ] |
                                  pinned FILE } ]
                          [ master DEVICE ][ vrf NAME ]
                          [ nomaster ]
                          [ addrgenmode { eui64 | none | stable_secret | random } ]
                          [ protodown { on | off } ]

       ip link show [ DEVICE | group GROUP ] [up] [master DEV] [vrf NAME] [type TYPE]

       ip link xstats type TYPE [ ARGS ]

       ip link afstats [ dev DEVICE ]

       ip link help [ TYPE ]

TYPE := { vlan | veth | vcan | dummy | ifb | macvlan | macvtap |
          bridge | bond | team | ipoib | ip6tnl | ipip | sit | vxlan |
          gre | gretap | ip6gre | ip6gretap | vti | nlmon | team_slave |
          bond_slave | ipvlan | geneve | bridge_slave | vrf | macsec }

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
  labels:
    app: nginx
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx:1.14.2
        ports:
        - containerPort: 80

[root@k8s-master1 service]# cat headless-svc.yaml
kind: Service
apiVersion: v1
metadata:
  name: my-nginx-headless-svc
spec:
  clusterIP: None
  ports:
  - protocol: TCP
    port: 80
    targetPort: 80
    name: httpport
  selector:
    run: my-nginx
 
[root@k8s-master1 service]# kubectl apply -f headless-svc.yaml
service/my-nginx-headless-svc created
[root@k8s-master1 service]# kubectl get svc -o wide
NAME                    TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)   AGE   SELECTOR
kubernetes              ClusterIP   10.96.0.1    <none>        443/TCP   44d   <none>
my-nginx-headless-svc   ClusterIP   None         <none>        80/TCP    9s    run=my-nginx

apiVersion: v1
kind: Service
metadata:
  name: nginx
  labels:
    app: nginx
spec:
  ports:
  - port: 80
    name: web
  clusterIP: None
  selector:
    app: nginx
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: web
spec:
  selector:
    matchLabels:
      app: nginx # has to match .spec.template.metadata.labels
  serviceName: "nginx"
  replicas: 3 # by default is 1
  minReadySeconds: 10 # by default is 0
  template:
    metadata:
      labels:
        app: nginx # has to match .spec.selector.matchLabels
    spec:
      terminationGracePeriodSeconds: 10
      containers:
      - name: nginx
        image: registry.k8s.io/nginx-slim:0.8
        ports:
        - containerPort: 80
          name: web
        volumeMounts:
        - name: www
          mountPath: /usr/share/nginx/html
  volumeClaimTemplates:
  - metadata:
      name: www
    spec:
      accessModes: [ "ReadWriteOnce" ]
      storageClassName: "my-storage-class"
      resources:
        requests:
          storage: 1Gi