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쿠버네티스 설치시 에러가 발생하는 부분에 대해서 문의 드립니다.
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저는 가상화 도구를 사용하지 않고 실제 데탑 3대를 가지고 테스트 하려고 합니다.
master node 를 설치중인데..
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[kubernetes]
name=Kubernetes
baseurl = http://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled = 1
gpgcheck = 0
repo_gpgcheck = 0
gpgkey = http://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg
https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
exclude=kube*
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[root@localhost imperialpt]# yum install -y kubelet kubeadm kubectl --disableexcludes=kubernetes
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: data.aonenetworks.kr
* extras: data.aonenetworks.kr
* updates: data.aonenetworks.kr
base | 3.6 kB 00:00:00
https://download.docker.com/linux/centos/7/x86_64/stable/repodata/repomd.xml: [Errno 14] curl#60 - "Peer's Certificate has expired."
Trying other mirror.
It was impossible to connect to the CentOS servers.
This could mean a connectivity issue in your environment, such as the requirement to configure a proxy,
or a transparent proxy that tampers with TLS security, or an incorrect system clock.
You can try to solve this issue by using the instructions on https://wiki.centos.org/yum-errors
If above article doesn't help to resolve this issue please use https://bugs.centos.org/.
extras | 2.9 kB 00:00:00
kubernetes | 1.4 kB 00:00:00
updates | 2.9 kB 00:00:00
kubernetes/primary | 59 kB 00:00:01
kubernetes 430/430
Resolving Dependencies
--> Running transaction check
---> Package kubeadm.x86_64 0:1.16.3-0 will be installed
--> Processing Dependency: kubernetes-cni >= 0.7.5 for package: kubeadm-1.16.3-0.x86_64
--> Processing Dependency: cri-tools >= 1.13.0 for package: kubeadm-1.16.3-0.x86_64
---> Package kubectl.x86_64 0:1.16.3-0 will be installed
---> Package kubelet.x86_64 0:1.16.3-0 will be installed
--> Processing Dependency: socat for package: kubelet-1.16.3-0.x86_64
--> Processing Dependency: conntrack for package: kubelet-1.16.3-0.x86_64
--> Running transaction check
---> Package conntrack-tools.x86_64 0:1.4.4-5.el7_7.2 will be installed
--> Processing Dependency: libnetfilter_cttimeout.so.1(LIBNETFILTER_CTTIMEOUT_1.1)(64bit) for package: conntrack-tools-1.4.4-5.el7_7.2.x86_64
--> Processing Dependency: libnetfilter_cttimeout.so.1(LIBNETFILTER_CTTIMEOUT_1.0)(64bit) for package: conntrack-tools-1.4.4-5.el7_7.2.x86_64
--> Processing Dependency: libnetfilter_cthelper.so.0(LIBNETFILTER_CTHELPER_1.0)(64bit) for package: conntrack-tools-1.4.4-5.el7_7.2.x86_64
--> Processing Dependency: libnetfilter_queue.so.1()(64bit) for package: conntrack-tools-1.4.4-5.el7_7.2.x86_64
--> Processing Dependency: libnetfilter_cttimeout.so.1()(64bit) for package: conntrack-tools-1.4.4-5.el7_7.2.x86_64
--> Processing Dependency: libnetfilter_cthelper.so.0()(64bit) for package: conntrack-tools-1.4.4-5.el7_7.2.x86_64
---> Package cri-tools.x86_64 0:1.13.0-0 will be installed
---> Package kubernetes-cni.x86_64 0:0.7.5-0 will be installed
---> Package socat.x86_64 0:1.7.3.2-2.el7 will be installed
--> Running transaction check
---> Package libnetfilter_cthelper.x86_64 0:1.0.0-10.el7_7.1 will be installed
---> Package libnetfilter_cttimeout.x86_64 0:1.0.0-6.el7_7.1 will be installed
---> Package libnetfilter_queue.x86_64 0:1.0.2-2.el7_2 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
==========================================================================================================================================================
Installing:
kubeadm x86_64 1.16.3-0 kubernetes 9.5 M
kubectl x86_64 1.16.3-0 kubernetes 10 M
kubelet x86_64 1.16.3-0 kubernetes 22 M
Installing for dependencies:
conntrack-tools x86_64 1.4.4-5.el7_7.2 updates 187 k
cri-tools x86_64 1.13.0-0 kubernetes 5.1 M
kubernetes-cni x86_64 0.7.5-0 kubernetes 10 M
libnetfilter_cthelper x86_64 1.0.0-10.el7_7.1 updates 18 k
libnetfilter_cttimeout x86_64 1.0.0-6.el7_7.1 updates 18 k
libnetfilter_queue x86_64 1.0.2-2.el7_2 base 23 k
socat x86_64 1.7.3.2-2.el7 base 290 k
Transaction Summary
==========================================================================================================================================================
Install 3 Packages (+7 Dependent packages)
Total download size: 57 M
Installed size: 262 M
Downloading packages:
(1/10): conntrack-tools-1.4.4-5.el7_7.2.x86_64.rpm | 187 kB 00:00:00
(2/10): 14bfe6e75a9efc8eca3f638eb22c7e2ce759c67f95b43b16fae4ebabde1549f3-cri-tools-1.13.0-0.x86_64.rpm | 5.1 MB 00:00:01
(3/10): fd6465355a85b8ddbc0b2e7cb073e3a40160c7c359576b86e9b8eca0a2d7805b-kubectl-1.16.3-0.x86_64.rpm | 10 MB 00:00:02
(4/10): b45a63e77d36fc7e1ef84f1cd2f7b84bccf650c8248191a37d20c69564d8b8df-kubeadm-1.16.3-0.x86_64.rpm | 9.5 MB 00:00:04
(5/10): libnetfilter_cthelper-1.0.0-10.el7_7.1.x86_64.rpm | 18 kB 00:00:00
(6/10): libnetfilter_cttimeout-1.0.0-6.el7_7.1.x86_64.rpm | 18 kB 00:00:00
(7/10): socat-1.7.3.2-2.el7.x86_64.rpm | 290 kB 00:00:00
(8/10): libnetfilter_queue-1.0.2-2.el7_2.x86_64.rpm | 23 kB 00:00:00
(9/10): 8a0e2b605c7a616d7cb72c25c9058b2327e41d869046c7c6cb3930f10a3dc012-kubelet-1.16.3-0.x86_64.rpm | 22 MB 00:00:04
(10/10): 548a0dcd865c16a50980420ddfa5fbccb8b59621179798e6dc905c9bf8af3b34-kubernetes-cni-0.7.5-0.x86_64.rpm | 10 MB 00:00:04
----------------------------------------------------------------------------------------------------------------------------------------------------------
Total 6.2 MB/s | 57 MB 00:00:09
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : libnetfilter_cttimeout-1.0.0-6.el7_7.1.x86_64 1/10
Installing : socat-1.7.3.2-2.el7.x86_64 2/10
Installing : kubectl-1.16.3-0.x86_64 3/10
Installing : cri-tools-1.13.0-0.x86_64 4/10
Installing : libnetfilter_queue-1.0.2-2.el7_2.x86_64 5/10
Installing : libnetfilter_cthelper-1.0.0-10.el7_7.1.x86_64 6/10
Installing : conntrack-tools-1.4.4-5.el7_7.2.x86_64 7/10
Installing : kubernetes-cni-0.7.5-0.x86_64 8/10
Installing : kubelet-1.16.3-0.x86_64 9/10
Installing : kubeadm-1.16.3-0.x86_64 10/10
Verifying : kubeadm-1.16.3-0.x86_64 1/10
Verifying : libnetfilter_cthelper-1.0.0-10.el7_7.1.x86_64 2/10
Verifying : conntrack-tools-1.4.4-5.el7_7.2.x86_64 3/10
Verifying : kubelet-1.16.3-0.x86_64 4/10
Verifying : libnetfilter_queue-1.0.2-2.el7_2.x86_64 5/10
Verifying : cri-tools-1.13.0-0.x86_64 6/10
Verifying : kubectl-1.16.3-0.x86_64 7/10
Verifying : kubernetes-cni-0.7.5-0.x86_64 8/10
Verifying : socat-1.7.3.2-2.el7.x86_64 9/10
Verifying : libnetfilter_cttimeout-1.0.0-6.el7_7.1.x86_64 10/10
Installed:
kubeadm.x86_64 0:1.16.3-0 kubectl.x86_64 0:1.16.3-0 kubelet.x86_64 0:1.16.3-0
Dependency Installed:
conntrack-tools.x86_64 0:1.4.4-5.el7_7.2 cri-tools.x86_64 0:1.13.0-0 kubernetes-cni.x86_64 0:0.7.5-0
libnetfilter_cthelper.x86_64 0:1.0.0-10.el7_7.1 libnetfilter_cttimeout.x86_64 0:1.0.0-6.el7_7.1 libnetfilter_queue.x86_64 0:1.0.2-2.el7_2
socat.x86_64 0:1.7.3.2-2.el7
Complete!
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위와 같이 설치 했을 경우
아래 실행 상태를 확인했을 경우 아래 에러가 발생하는것으로 보여집니다.
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[root@localhost network-scripts]# systemctl status kubelet
● kubelet.service - kubelet: The Kubernetes Node Agent
Loaded: loaded (/usr/lib/systemd/system/kubelet.service; enabled; vendor preset: disabled)
Drop-In: /usr/lib/systemd/system/kubelet.service.d
└─10-kubeadm.conf
Active: inactive (dead) (Result: exit-code) since Sun 2020-11-29 14:25:28 EST; 19s ago
Docs: https://kubernetes.io/docs/
Process: 2356 ExecStart=/usr/bin/kubelet $KUBELET_KUBECONFIG_ARGS $KUBELET_CONFIG_ARGS $KUBELET_KUBEADM_ARGS $KUBELET_EXTRA_ARGS (code=exited, status=255)
Main PID: 2356 (code=exited, status=255)
Nov 29 14:25:28 localhost.localdomain systemd[1]: Unit kubelet.service entered failed state.
Nov 29 14:25:28 localhost.localdomain systemd[1]: kubelet.service failed.
Nov 29 14:25:28 localhost.localdomain systemd[1]: Stopped kubelet: The Kubernetes Node Agent.
원인을 무었인가요?
Answer 4
1
1
감사합니다. 삭제하고 재설치해야겠군요..^^
그리고 한가지 더 문의 드립니다.
cat << EOF >> /etc/hosts
192.168.0.30 k8s-master
192.168.0.31 k8s-node1
192.168.0.32 k8s-node2
EOF
마찬가지로 노드도 모두 데탑에 설치해서 실제 환경 테스트를 하려고 합니다. 현재 모두 centos가 설치되어 있습니다.
실제 설정된 아이피를 지정해도 괜찮을까요?
0
0
네 안녕하세요.
yum install -y kubelet kubeadm kubectl --disableexcludes=kubernetes
를 하신 다음에 바로 systemctl status kubelet를 해보신건가요?
명령어를 보니 아래 제 설치 가이드를 보시고 하신건 아닌거 같네요?
Kubernetes 설치 - Case1
https://kubetm.github.io/practice/appendix/installation_case1/
일단 yum install 을 하셨으면 패키지가 설치가 된거고
systemctl enable --now kubelet
이거까지 하셔야 kubelet이 실행되기 때문에,
systemctl status kubelet 명령을 했을때 실행중인 상태를 알수가 있습니다.
그리고
yum install -y kubelet kubeadm kubectl --disableexcludes=kubernetes
이렇게 쿠버네티스를 설치하게되면 최신버전을 설치하기 때문에 대시보드 설치 등 제 강의 내용과는 다르게 된다는 점 말씀드려요.
감사합니다.