k8s创建静态pod

k8s创建静态pod

静态Pod是由kubelet进行管理的仅存在于特定Node上的Pod。它们不能通过API Server进行管理，无法与ReplicationController、Deployment或者DaemonSet进行关联，并且kubelet无法对它们进行健康检查。静态Pod总是由kubelet创建的，并且总在kubelet所在的Node上运行。

配置文件方式

增加kubelet的配置文件

–pod-manifest-path=/etc/kubelet.d/

[root@tom ~]# cat /usr/lib/systemd/system/kubelet.service
[Unit]
Description=Kubernetes Kubelet
Documentation=https://github.com/GoogleCloudPlatform/kubernetes
After=docker.service
Requires=docker.service

[Service]
#WorkingDirectory=/var/lib/kubelet
ExecStart=/usr/local/bin/kubelet --runtime-cgroups=/systemd/system.slice --kubelet-cgroups=/systemd/system.slice  --address=192.168.11.110   --hostname-override=192.168.11.110   --cgroup-driver=cgroupfs   --pod-infra-container-image=mirrorgooglecontainers/pause-amd64:3.0   --experimental-bootstrap-kubeconfig=/etc/kubernetes/bootstrap.kubeconfig   --kubeconfig=/etc/kubernetes/kubelet.kubeconfig   --cert-dir=/etc/kubernetes/ssl   --cluster-dns=10.254.0.100   --cluster-domain=cluster.local.   --hairpin-mode=promiscuous-bridge   --allow-privileged=true   --fail-swap-on=false   --serialize-image-pulls=false   --max-pods=30   --logtostderr=true   --v=2 --pod-manifest-path=/etc/kubelet.d/
Restart=on-failure
RestartSec=5

[Install]
WantedBy=multi-user.target
[root@tom ~]#

[root@tom ~]# cat /etc/kubelet.d/static-web.yaml
apiVersion: v1
kind: Pod
metadata:
  name: static-web
  labels:
    role: myrole
spec:
  containers:
    - name: web
      image: nginx:1.17.6
      ports:
        - name: web
          containerPort: 80
          protocol: TCP
[root@tom ~]#
[root@tom kubelet.d]# pod | grep static
default         static-web-192.168.11.110                    1/1     Running   1          44s     172.17.0.12      192.168.11.110   <none>
[root@tom kubelet.d]#
[root@tom kubelet.d]#
[root@tom kubelet.d]#
[root@tom kubelet.d]# docker ps | grep static
d4d4e32bd2d0        f7bb5701a33c                                                                                          "nginx -g 'daemon ..."   About a minute ago   Up About a minute                       k8s_web_static-web-192.168.11.110_default_2afff31d221bf0e43166ca6b119d7f08_1
dbfb901d1ca2        mirrorgooglecontainers/pause-amd64:3.0                                                                "/pause"                 About a minute ago   Up About a minute                       k8s_POD_static-web-192.168.11.110_default_2afff31d221bf0e43166ca6b119d7f08_1
[root@tom kubelet.d]#
[root@tom kubelet.d]#
[root@tom kubelet.d]#
[root@tom kubelet.d]#
[root@tom kubelet.d]#
[root@tom kubelet.d]#
[root@tom kubelet.d]#
[root@tom kubelet.d]#
[root@tom kubelet.d]# pod | grep static
default         static-web-192.168.11.110                    1/1     Running   1          3m7s    172.17.0.12      192.168.11.110   <none>
[root@tom kubelet.d]#
[root@tom kubelet.d]#
[root@tom kubelet.d]#
[root@tom kubelet.d]#
[root@tom kubelet.d]# kubectl delete pod static-web-192.168.11.110
pod "static-web-192.168.11.110" deleted
[root@tom kubelet.d]# pod | grep static
default         static-web-192.168.11.110                    0/1     Pending   0          1s      <none>           192.168.11.110   <none>
[root@tom kubelet.d]#
[root@tom kubelet.d]#
[root@tom kubelet.d]#
[root@tom kubelet.d]#
[root@tom kubelet.d]#
[root@tom kubelet.d]#
[root@tom kubelet.d]# pod | grep static
default         static-web-192.168.11.110                    1/1     Running   1          21s     172.17.0.12      192.168.11.110   <none>
[root@tom kubelet.d]#
[root@tom kubelet.d]#
[root@tom kubelet.d]#

只有删除yaml文件才会删除pod

[root@tom kubelet.d]# mv static-web.yaml  /
[root@tom kubelet.d]#
[root@tom kubelet.d]# ll
total 0
[root@tom kubelet.d]#
[root@tom kubelet.d]#
[root@tom kubelet.d]#
[root@tom kubelet.d]#
[root@tom kubelet.d]# pod | grep static
[root@tom kubelet.d]#
[root@tom kubelet.d]#

HTTP

失败