質問

Ubuntu18.04にKubernetesをセットアップしようとしています。こちらの記事を参考に入れているのですが、

bash
1sudo kubeadm init --pod-network-cidr=10.114.0.0/16

のところでエラーが出ます。

bash
1[init] Using Kubernetes version: v1.14.2
2[preflight] Running pre-flight checks
3	[WARNING IsDockerSystemdCheck]: detected "cgroupfs" as the Docker cgroup driver. The recommended driver is "systemd". Please follow the guide at https://kubernetes.io/docs/setup/cri/
4error execution phase preflight: [preflight] Some fatal errors occurred:
5	[ERROR Port-6443]: Port 6443 is in use
6	[ERROR Port-10251]: Port 10251 is in use
7	[ERROR Port-10252]: Port 10252 is in use
8	[ERROR FileAvailable--etc-kubernetes-manifests-kube-apiserver.yaml]: /etc/kubernetes/manifests/kube-apiserver.yaml already exists
9	[ERROR FileAvailable--etc-kubernetes-manifests-kube-controller-manager.yaml]: /etc/kubernetes/manifests/kube-controller-manager.yaml already exists
10	[ERROR FileAvailable--etc-kubernetes-manifests-kube-scheduler.yaml]: /etc/kubernetes/manifests/kube-scheduler.yaml already exists
11	[ERROR FileAvailable--etc-kubernetes-manifests-etcd.yaml]: /etc/kubernetes/manifests/etcd.yaml already exists
12	[ERROR Port-10250]: Port 10250 is in use
13	[ERROR Port-2379]: Port 2379 is in use
14	[ERROR Port-2380]: Port 2380 is in use
15	[ERROR DirAvailable--var-lib-etcd]: /var/lib/etcd is not empty
16[preflight] If you know what you are doing, you can make a check non-fatal with `--ignore-preflight-errors=...`
17

portが使われているということだったので、調べて

bash
1sudo netstat -lnp | grep 10250
2
3tcp        0      0 127.0.0.1:10257         0.0.0.0:*               LISTEN      4969/kube-controlle 
4tcp        0      0 127.0.0.1:10259         0.0.0.0:*               LISTEN      4903/kube-scheduler 
5tcp6       0      0 :::10251                :::*                    LISTEN      4903/kube-scheduler 
6tcp6       0      0 :::10252                :::*                    LISTEN      4969/kube-controlle 
7tcp6       0      0 :::10256                :::*                    LISTEN      5330/kube-proxy     
8unix  2      [ ACC ]     STREAM     LISTENING     31025    1510/Xorg            @/tmp/.X11-unix/X0
9