쿠버1탄-24. 쿠버네티스 - 스토리지 NFS(선택)
다음은 쿠버네티스 스터디 자료를 참고해 정리한 내용입니다.
<1> 마스터 노드 : NFS 서버 역할
<2> 생성
<3> 삭제
쿠버네티스-도메인 없이 kops로 aws쿠버설치
https://brunch.co.kr/@topasvga/1681
alias k=kubectl
complete -F __start_kubectl k
<1> 마스터 노드 : NFS 서버 역할
1
sudo su -
apt install -y nfs-kernel-server
mkdir /nfs4-share
echo '/nfs4-share *(rw,sync,no_root_squash)' >> /etc/exports
systemctl restart nfs-server
2
nfs 설정 정상 확인
exportfs -v
root@ip-172-20-60-135:~# exportfs -v
/nfs4-share <world>(rw,wdelay,no_root_squash,no_subtree_check,sec=sys,rw,secure,no_root_squash,no_all_squash)
3
워커 노드에 NFS Client 설치 - 미설치 시 컨테이너(NFS Client) 실행 시 에러 발생
apt install nfs-common -y
4
k get nodes
ubuntu@ip-172-20-60-135:~$ k get nodes
NAME STATUS ROLES AGE VERSION
ip-172-20-56-239.ap-northeast-1.compute.internal Ready node 17h v1.20.8
ip-172-20-60-135.ap-northeast-1.compute.internal Ready control-plane,master 17h v1.20.8
ip-172-20-62-175.ap-northeast-1.compute.internal Ready node 17h v1.20.8
dig +short ip-172-20-60-135.ap-northeast-1.compute.internal
ubuntu@ip-172-20-60-135:~$ dig +short ip-172-20-60-135.ap-northeast-1.compute.internal
172.20.60.135
cat << EOF > nfs-pod.yaml
apiVersion: v1
kind: Pod
metadata:
name: nfs-pod
spec:
containers:
- name: nfs-mount-container
image: busybox
args: [ "tail", "-f", "/dev/null" ]
volumeMounts:
- name: nfs-volume
mountPath: /nfs4
volumes:
- name : nfs-volume
nfs:
path: /nfs4-share
server: 172.20.60.135 # {NFS_SERVICE_IP, 마스터 노드의 IP}
EOF
<2> 생성
1
sed -i 's/192.168.100.10/<각자 자신의 마스터 노드의 IP>/g' nfs-pod.yaml
sed -i 's/192.168.100.10/172.20.60.135>/g' nfs-pod.yaml
kubectl apply -f nfs-pod.yaml
NAME READY STATUS RESTARTS AGE
pod/nfs-pod 1/1 R
2
# 파드 2개 더 생성
cat nfs-pod.yaml | sed -e "s/nfs-pod/nfs-pod2/" | kubectl apply -f -
cat nfs-pod.yaml | sed -e "s/nfs-pod/nfs-pod3/" | kubectl apply -f -
NAME READY STATUS RESTARTS AGE
pod/nfs-pod 1/1 Running 0 41s
pod/nfs-pod2 1/1 Running 0 9s
pod/nfs-pod3 1/1 Running 0 7s
# NFS서버 공유 디렉터리에 파일 생성 후 파드들에서 확인
# 마스터 노드에서 아래 실행
for i in {1..100}; do touch /nfs4-share/deleteme.$i; done;
ls /nfs4-share/
sudo su -
ubuntu@ip-172-20-60-135:~$ sudo su -
root@ip-172-20-60-135:~# for i in {1..100}; do touch /nfs4-share/deleteme.$i; done;
root@ip-172-20-60-135:~# ls /nfs4-share/
deleteme.1 deleteme.16 deleteme.23 deleteme.30 deleteme.38 deleteme.45 deleteme.52 deleteme.6 deleteme.67 deleteme.74 deleteme.81 deleteme.89 deleteme.96
deleteme.10 deleteme.17 deleteme.24 deleteme.31 deleteme.39 deleteme.46 deleteme.53 deleteme.60 deleteme.68 deleteme.75 deleteme.82 deleteme.9 deleteme.97
deleteme.100 deleteme.18 deleteme.25 deleteme.32 deleteme.4 deleteme.47 deleteme.54 deleteme.61 deleteme.69 deleteme.76 deleteme.83 deleteme.90 deleteme.98
deleteme.11 deleteme.19 deleteme.26 deleteme.33 deleteme.40 deleteme.48 deleteme.55 deleteme.62 deleteme.7 deleteme.77 deleteme.84 deleteme.91 deleteme.99
deleteme.12 deleteme.2 deleteme.27 deleteme.34 deleteme.41 deleteme.49 deleteme.56 deleteme.63 deleteme.70 deleteme.78 deleteme.85 deleteme.92
deleteme.13 deleteme.20 deleteme.28 deleteme.35 deleteme.42 deleteme.5 deleteme.57 deleteme.64 deleteme.71 deleteme.79 deleteme.86 deleteme.93
deleteme.14 deleteme.21 deleteme.29 deleteme.36 deleteme.43 deleteme.50 deleteme.58 deleteme.65 deleteme.72 deleteme.8 deleteme.87 deleteme.94
deleteme.15 deleteme.22 deleteme.3 deleteme.37 deleteme.44 deleteme.51 deleteme.59 deleteme.66 deleteme.73 deleteme.80 deleteme.88 deleteme.95
exit
# 파드1~3에서 확인
kubectl exec -it nfs-pod -- /bin/sh -c "df -hT -T nfs4"
ubuntu@ip-172-20-60-135:~$ kubectl exec -it nfs-pod -- /bin/sh -c "df -hT -T nfs4"
Filesystem Type Size Used Available Use% Mounted on
172.20.60.135:/nfs4-share nfs4 62.0G 6.1G 55.8G 10% /nfs4
kubectl exec -it nfs-pod -- ls /nfs4
kubectl exec -it nfs-pod2 -- ls /nfs4
kubectl exec -it nfs-pod3 -- ls /nfs4
kubectl exec -it nfs-pod -- /bin/sh -c "rm /nfs4/*"
kubectl exec -it nfs-pod -- /bin/sh -c "touch /nfs4/test.txt"
ls /nfs4-share/
kubectl exec -it nfs-pod2 -- ls /nfs4
<3> 삭제
kubectl delete pod --all
ubuntu@ip-172-20-60-135:~$ kubectl delete pod --all
pod "nfs-pod" deleted
pod "nfs-pod2" deleted
pod "nfs-pod3" deleted
다음과정
https://brunch.co.kr/@topasvga/1713
https://brunch.co.kr/@topasvga/1656
감사합니다.
