TASK [kubernetes/master : Init Kubernetes cluster] - Port 2379 is in use

[ocsen35]

cat inventory
[master]
16.200.8.123
[node]
16.200.0.106
16.200.8.122
[kube-cluster:children]
master
node

ansible-playbook site.yaml
yield the error:
TASK [kubernetes/master : Init Kubernetes cluster] ********************************************************************************************************************************
fatal: [16.200.8.123]: FAILED! => {"changed": true, "cmd": "kubeadm init --service-cidr 10.96.0.0/12 --kubernetes-version v1.9.3 --pod-network-cidr 10.244.0.0/16 --token b0f7b8.8d1767876297d85c ", "delta": "0:00:00.252457", "end": "2018-03-15 03:44:54.458903", "msg": "non-zero return code", "rc": 2, "start": "2018-03-15 03:44:54.206446", "stderr": "\t[WARNING FileExisting-crictl]: crictl not found in system path\n[preflight] Some fatal errors occurred:\n\t[ERROR Port-2379]: Port 2379 is in use\n\t[ERROR DirAvailable--var-lib-etcd]: /var/lib/etcd is not empty\n[preflight] If you know what you are doing, you can make a check non-fatal with --ignore-preflight-errors=...", "stderr_lines": ["\t[WARNING FileExisting-crictl]: crictl not found in system path", "[preflight] Some fatal errors occurred:", "\t[ERROR Port-2379]: Port 2379 is in use", "\t[ERROR DirAvailable--var-lib-etcd]: /var/lib/etcd is not empty", "[preflight] If you know what you are doing, you can make a check non-fatal with --ignore-preflight-errors=..."], "stdout": "[init] Using Kubernetes version: v1.9.3\n[init] Using Authorization modes: [Node RBAC]\n[preflight] Running pre-flight checks.", "stdout_lines": ["[init] Using Kubernetes version: v1.9.3", "[init] Using Authorization modes: [Node RBAC]", "[preflight] Running pre-flight checks."]}

[ocsen35]

The problem still exists even I stopped the etcd service.

[ocsen35]

sudo kubeadm init --service-cidr 10.96.0.0/12 --kubernetes-version v1.9.3 --pod-network-cidr 10.244.0.0/16 --token b0f7b8.8d1767876297d85C
[init] Using Kubernetes version: v1.9.3
[init] Using Authorization modes: [Node RBAC]
[preflight] Running pre-flight checks.
[WARNING FileExisting-crictl]: crictl not found in system path
[preflight] Some fatal errors occurred:
[ERROR DirAvailable--var-lib-etcd]: /var/lib/etcd is not empty
[preflight] If you know what you are doing, you can make a check non-fatal with --ignore-preflight-errors=...