[k8s]kubeadm k8s免费实验平台labs.play-with-k8s.com,k8s在线测试
k8s实验
labs.play-with-k8s.com特色
- 这玩意允许你用github或dockerhub去登录
- 这玩意登录后倒计时,给你4h实践
- 这玩意用kubeadm来部署(让你用weave网络)
- 这玩意提供5台centos7(7.4.1708) 内核4.x(4.4.0-101-generic) docker17(17.09.0-ce)
- 这玩意资源配置每台4核32G
搭建kubeam5节点集群
按照提示搞吧
让你用kubeadm
1. Initializes cluster master node:
kubeadm init --apiserver-advertise-address $(hostname -i)
这玩意让你部署weave网络,否则添加节点后显示notready
2. Initialize cluster networking:
kubectl apply -n kube-system -f \
"https://cloud.weave.works/k8s/net?k8s-version=$(kubectl version | base64 | tr -d '\n')"
让你部署一个nginx尝尝鲜
3. (Optional) Create an nginx deployment:
kubectl apply -f https://k8s.io/docs/user-guide//nginx-app.yaml
- 这玩意资源排布情况
这玩意的启动参数
kube-apiserver
--requestheader-extra-headers-prefix=X-Remote-Extra-
--requestheader-allowed-names=front-proxy-client
--advertise-address=192.168.0.13
--requestheader-username-headers=X-Remote-User
--service-account-key-file=/etc/kubernetes/pki/sa.pub
--kubelet-client-certificate=/etc/kubernetes/pki/apiserver-kubelet-client.crt
--kubelet-client-key=/etc/kubernetes/pki/apiserver-kubelet-client.key
--proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client.key
--admission-control=Initializers,NamespaceLifecycle,LimitRanger,ServiceAccount,PersistentVolumeLabel,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,ResourceQuota
--client-ca-file=/etc/kubernetes/pki/ca.crt
--tls-cert-file=/etc/kubernetes/pki/apiserver.crt
--tls-private-key-file=/etc/kubernetes/pki/apiserver.key
--secure-port=6443
--requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.crt
--proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.crt
--insecure-port=0
--allow-privileged=true
--kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname
--requestheader-group-headers=X-Remote-Group
--service-cluster-ip-range=10.96.0.0/12
--enable-bootstrap-token-auth=true
--authorization-mode=Node,RBAC
--etcd-servers=http://127.0.0.1:2379
--token-auth-file=/etc/pki/tokens.csv
etcd的静态pod
[node1 kubernetes]$ cat manifests/etcd.yaml
apiVersion: v1
kind: Pod
metadata:
annotations:
scheduler.alpha.kubernetes.io/critical-pod: ""
creationTimestamp: null
labels:
component: etcd
tier: control-plane
name: etcd
namespace: kube-system
spec:
containers:
- command:
- etcd
- --advertise-client-urls=http://127.0.0.1:2379
- --data-dir=/var/lib/etcd
- --listen-client-urls=http://127.0.0.1:2379
image: gcr.io/google_containers/etcd-amd64:3.0.17
livenessProbe:
failureThreshold: 8
httpGet:
host: 127.0.0.1
path: /health
port: 2379
scheme: HTTP
initialDelaySeconds: 15
timeoutSeconds: 15
name: etcd
resources: {}
volumeMounts:
- mountPath: /var/lib/etcd
name: etcd
hostNetwork: true
volumes:
- hostPath:
path: /var/lib/etcd
type: DirectoryOrCreate
name: etcd
status: {}
master 三大组件的yaml
cat manifests/kube-apiserver.yaml
apiVersion: v1
kind: Pod
metadata:
annotations:
scheduler.alpha.kubernetes.io/critical-pod: ""
creationTimestamp: null
labels:
component: kube-apiserver
tier: control-plane
name: kube-apiserver
namespace: kube-system
spec:
containers:
- command:
- kube-apiserver
- --requestheader-extra-headers-prefix=X-Remote-Extra-
- --requestheader-allowed-names=front-proxy-client
- --advertise-address=192.168.0.13
- --requestheader-username-headers=X-Remote-User
- --service-account-key-file=/etc/kubernetes/pki/sa.pub
- --kubelet-client-certificate=/etc/kubernetes/pki/apiserver-kubelet-client.crt
- --kubelet-client-key=/etc/kubernetes/pki/apiserver-kubelet-client.key
- --proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client.key
- --admission-control=Initializers,NamespaceLifecycle,LimitRanger,ServiceAccount,PersistentVolumeLabel,DefaultStorageClass,DefaultTolerationSeconds,Node
Restriction,ResourceQuota
- --client-ca-file=/etc/kubernetes/pki/ca.crt
- --tls-cert-file=/etc/kubernetes/pki/apiserver.crt
- --tls-private-key-file=/etc/kubernetes/pki/apiserver.key
- --secure-port=6443
- --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.crt
- --proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.crt
- --insecure-port=0
- --allow-privileged=true
- --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname
- --requestheader-group-headers=X-Remote-Group
- --service-cluster-ip-range=10.96.0.0/12
- --enable-bootstrap-token-auth=true
- --authorization-mode=Node,RBAC
- --etcd-servers=http://127.0.0.1:2379
- --token-auth-file=/etc/pki/tokens.csv
image: gcr.io/google_containers/kube-apiserver-amd64:v1.8.6
imagePullPolicy: IfNotPresent
livenessProbe:
failureThreshold: 8
httpGet:
host: 127.0.0.1
path: /healthz
port: 6443
scheme: HTTPS
initialDelaySeconds: 15
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 15
name: kube-apiserver
resources:
requests:
cpu: 250m
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: File
volumeMounts:
- mountPath: /etc/kubernetes/pki
name: k8s-certs
readOnly: true
- mountPath: /etc/ssl/certs
name: ca-certs
readOnly: true
- mountPath: /etc/pki
name: ca-certs-etc-pki
readOnly: true
dnsPolicy: ClusterFirst
hostNetwork: true
restartPolicy: Always
schedulerName: default-scheduler
securityContext: {}
terminationGracePeriodSeconds: 30
volumes:
- hostPath:
path: /etc/kubernetes/pki
type: DirectoryOrCreate
name: k8s-certs
- hostPath:
path: /etc/ssl/certs
type: DirectoryOrCreate
name: ca-certs
- hostPath:
path: /etc/pki
type: DirectoryOrCreate
name: ca-certs-etc-pki
status: {}
cat manifests/kube-controller-manager.yaml
apiVersion: v1
kind: Pod
metadata:
annotations:
scheduler.alpha.kubernetes.io/critical-pod: ""
creationTimestamp: null
labels:
component: kube-controller-manager
tier: control-plane
name: kube-controller-manager
namespace: kube-system
spec:
containers:
- command:
- kube-controller-manager
- --root-ca-file=/etc/kubernetes/pki/ca.crt
- --kubeconfig=/etc/kubernetes/controller-manager.conf
- --service-account-private-key-file=/etc/kubernetes/pki/sa.key
- --cluster-signing-cert-file=/etc/kubernetes/pki/ca.crt
- --cluster-signing-key-file=/etc/kubernetes/pki/ca.key
- --address=127.0.0.1
- --leader-elect=true
- --use-service-account-credentials=true
- --controllers=*,bootstrapsigner,tokencleaner
image: gcr.io/google_containers/kube-controller-manager-amd64:v1.8.6
livenessProbe:
failureThreshold: 8
httpGet:
host: 127.0.0.1
path: /healthz
port: 10252
scheme: HTTP
initialDelaySeconds: 15
timeoutSeconds: 15
name: kube-controller-manager
resources:
requests:
cpu: 200m
volumeMounts:
- mountPath: /etc/kubernetes/pki
name: k8s-certs
readOnly: true
- mountPath: /etc/ssl/certs
name: ca-certs
readOnly: true
- mountPath: /etc/kubernetes/controller-manager.conf
name: kubeconfig
readOnly: true
- mountPath: /usr/libexec/kubernetes/kubelet-plugins/volume/exec
name: flexvolume-dir
- mountPath: /etc/pki
name: ca-certs-etc-pki
readOnly: true
hostNetwork: true
volumes:
- hostPath:
path: /etc/kubernetes/pki
type: DirectoryOrCreate
name: k8s-certs
- hostPath:
path: /etc/ssl/certs
type: DirectoryOrCreate
name: ca-certs
- hostPath:
path: /etc/kubernetes/controller-manager.conf
type: FileOrCreate
name: kubeconfig
- hostPath:
path: /usr/libexec/kubernetes/kubelet-plugins/volume/exec
type: DirectoryOrCreate
name: flexvolume-dir
- hostPath:
path: /etc/pki
type: DirectoryOrCreate
name: ca-certs-etc-pki
status: {}
cat manifests/kube-scheduler.yaml
apiVersion: v1
kind: Pod
metadata:
annotations:
scheduler.alpha.kubernetes.io/critical-pod: ""
creationTimestamp: null
labels:
component: kube-scheduler
tier: control-plane
name: kube-scheduler
namespace: kube-system
spec:
containers:
- command:
- kube-scheduler
- --address=127.0.0.1
- --leader-elect=true
- --kubeconfig=/etc/kubernetes/scheduler.conf
image: gcr.io/google_containers/kube-scheduler-amd64:v1.8.6
livenessProbe:
failureThreshold: 8
httpGet:
host: 127.0.0.1
path: /healthz
port: 10251
scheme: HTTP
initialDelaySeconds: 15
timeoutSeconds: 15
name: kube-scheduler
resources:
requests:
cpu: 100m
volumeMounts:
- mountPath: /etc/kubernetes/scheduler.conf
name: kubeconfig
readOnly: true
hostNetwork: true
volumes:
- hostPath:
path: /etc/kubernetes/scheduler.conf
type: FileOrCreate
name: kubeconfig
status: {}
[node1 kubernetes]$ cat kubelet.conf
apiVersion: v1
clusters:
- cluster:
certificate-authority-data: xxx
name: kubernetes
contexts:
- context:
[node1 kubernetes]$ cat kubelet.conf
apiVersion: v1
clusters:
- cluster:
certificate-authority-data: xxx
name: system:node:node1@kubernetescurrent-context: system:node:node1@kuberneteskind: Configpreferences: {}users:- name: system:node:node1 user: client-certificate-data: xxx
client-key-data: xxx
[node1 kubernetes]$ ls
admin.conf controller-manager.conf kubelet.conf manifests pki scheduler.conf
[node1 kubernetes]$ cat controller-manager.conf
apiVersion: v1
clusters:
- cluster:
certificate-authority-data: xxx
server: https://192.168.0.13:6443
name: kubernetes
contexts:
- context:
cluster: kubernetes
user: system:kube-controller-manager
name: system:kube-controller-manager@kubernetes
current-context: system:kube-controller-manager@kubernetes
kind: Config
preferences: {}
users:
- name: system:kube-controller-manager
user:
client-certificate-data: xxx
client-key-data: xxx
[node1 kubernetes]$
[node1 kubernetes]$ cat admin.conf
apiVersion: v1
clusters:
- cluster:
certificate-authority-data: xxx
server: https://192.168.0.13:6443
name: kubernetes
contexts:
- context:
cluster: kubernetes
user: kubernetes-admin
name: kubernetes-admin@kubernetes
current-context: kubernetes-admin@kubernetes
kind: Config
preferences: {}
users:
- name: kubernetes-admin
user:
client-certificate-data: xxx
client-key-data: xxx
kubelet参数
/usr/bin/kubelet
--bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf
--kubeconfig=/etc/kubernetes/kubelet.conf
--pod-manifest-path=/etc/kubernetes/manifests
--allow-privileged=true
--network-plugin=cni
--cni-conf-dir=/etc/cni/net.d
--cni-bin-dir=/opt/cni/bin
--cluster-dns=10.96.0.10
--cluster-domain=cluster.local
--authorization-mode=Webhook
--client-ca-file=/etc/kubernetes/pki/ca.crt
--cadvisor-port=0
--cgroup-driver=cgroupfs
--fail-swap-on=false
kube-proxy
/usr/local/bin/kube-proxy
--kubeconfig=/var/lib/kube-proxy/kubeconfig.conf
--cluster-cidr=172.17.0.1/16
--masquerade-all
--conntrack-max=0
--conntrack-max-per-core=0
kube-controller-manager
kube-controller-manager
--root-ca-file=/etc/kubernetes/pki/ca.crt
--kubeconfig=/etc/kubernetes/controller-manager.conf
--service-account-private-key-file=/etc/kubernetes/pki/sa.key
--cluster-signing-cert-file=/etc/kubernetes/pki/ca.crt
--cluster-signing-key-file=/etc/kubernetes/pki/ca.key
--address=127.0.0.1
--leader-elect=true
--use-service-account-credentials=true
--controllers=*,bootstrapsigner,tokencleaner
kube-scheduler
--address=127.0.0.1
--leader-elect=true
--kubeconfig=/etc/kubernetes/scheduler.conf
