替换hub 地址命令
sed -i 's/{{HUB}}/www.znf4.top:5000/g' *
查看日志
journalctl -f
#k8s apiServer
alias kubectl=" kubectl -s http://www.znf4.top:8080"
#查监听端口
netstat -ntlp
[root@k8s-master ~]# systemctl enable kube-apiserver.service
[root@k8s-master ~]# systemctl start kube-apiserver.service
[root@k8s-master ~]# systemctl enable kube-controller-manager.service
[root@k8s-master ~]# systemctl start kube-controller-manager.service
[root@k8s-master ~]# systemctl enable kube-scheduler.service
[root@k8s-master ~]# systemctl start kube-scheduler.service
#etcd 数据目录
命令地址:https://www.cnblogs.com/breg/p/5756558.html
/var/lib/etcd/default.xx 干掉即可。
#查看pod 容器启动日志 (后面还可以跟容器具体名字,毕竟一个pod 下可以有多个容器)
kubectl logs -f supewisor-service-deployment-1614667797-pd4c9(podName)
#当pod 启动失败后, 可以用如下命令查看pod 日志,web-gateway-deployment-7bcd9f8f8c-85lcq他是pod name.
kubectl describe pod web-gateway-deployment-7bcd9f8f8c-85lcq
kubectl get nodes
kubectl get svc
kubectl get deploy
kubectl get pods -o wide
kubectl delete deploy 'deployName'
kubectl delete svc 'svcName'
kubectl delete pods 'podName'
kubectl apply -f xxx.yaml
#指定namespace 操作
kubectl -n kube-system(namespace名字) get svc
docker images
docker ps
docker run
docker pull
docker push
docker build -t
docker stop id
docker rm id
docker images
docker rmi id
#进入到docker 的容器中
docker ps|grep web-gateway-deployment-869911713-m5vpr(pod name)通过这个命令查 容器 id
docker exec -it 8a90(容器id 前四位) bash
#测试
curl supewisor-service:3005/supewisor/common/queryLowerRegion?scope=110000
#想要在k8s 集群中 通过 Service name 来发现+port 来发现 pod 下的容器,需要安装 kube dns 。
#master 操作
etcdctl mk /skydns/config '{"dns-addr":"10.254.10.2:53","ttl":3600,"domain":"sky."}'
{"dns-addr":"10.254.10.2:53","ttl":3600,"domain":"sky."}
etcdctl update /atomic.io/network/config '{"Network": "10.0.0.0/16"}'
etcdctl update /atomic.io/network/config '{ "Network": "10.0.0.0/16", "Backend": {"Type": "vxlan"}}'
etcdctl set /atomic.io/network/config '{ "Network": "172.17.0.0/16" }'
etcdctl --endpoints=http://etcd:2379 set /atomic.io/network/config '{"Network":"10.2.0.0/16","SubnetLen":24,"Backend":{"Type":"vxlan"}}'
etcdctl mkdir /kube-centos/network
etcdctl mk /kube-centos/network/config "{ \"Network\": \"172.30.0.0/16\", \"SubnetLen\": 24, \"Backend\": { \"Type\": \"vxlan\" } }"
#删除etcd 的数据库
rm -rf /var/lib/etcd/*
#编辑这两个文件
skydns-dpm.yaml (这个不好使)
kubectl create -f skydns-dpm.yaml
skydns-rc.yaml
skydns-svc.yaml
kubectl create -f skydns-rc.yaml
kubectl create -f skydns-svc.yaml
#node 上操作
vim /etc/kubernetes/kubelet
#版本一
--cluster-dns=10.254.10.2 --cluster-domain=sky --allow-privileged=true
#版本二 好使-pods 可以启动,状态是:Running
--cluster-domain=lykops.net --cluster_dns=10.254.10.2
systemctl restart kubelet.service
#对于 kube-system 的namespace 不能删除问题,可以操作如下:
kubectl delete -f skydns-dpm.yaml 通过 yaml 删除其 deployments 和 services 。
#查看
[root@k8s-master yaml]# kubectl get deployment --all-namespaces
NAMESPACE NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE
kube-system kube-dns 1 1 1 1 2m
kube-system kubernetes-dashboard-latest 1 1 1 1 1d
[root@k8s-master yaml]# kubectl get pod -o wide --all-namespaces
NAMESPACE NAME READY STATUS RESTARTS AGE IP NODE
kube-system kube-dns-520758324-1luff 2/2 Running 0 2m 10.0.28.2 k8s-node-1
kube-system kubernetes-dashboard-latest-127826951-pxrpk 1/1 Running 0 1d 10.0.62.2 k8s-node-2
#centos7下ip转发的配置 (kube-dns 可能需要这么配置)
1、先确认ipv4配置了转发设置
vim /etc/sysctl.conf #命令1(编辑配置文件)
net.ipv4.ip_forward=1 # 设置转发
sysctl –p
#进入到pods 中
kubectl exec -i -t web-gateway-deployment-869911713-sh0z7(podname) sh
systemctl enable flanneld
systemctl start flanneld systemctl stop flanneld.service
service docker restart
systemctl restart kube-apiserver
systemctl restart kube-controller-manager
systemctl restart kube-scheduler
在 node 虚机上执行:
systemctl enable flanneld
systemctl start flanneld
service docker restart
systemctl restart kubelet
systemctl restart kube-proxy
#flannel 配置
vim /usr/lib/systemd/system/flanneld.service
ExecStart=/usr/bin/flanneld -etcd-endpoints=http://etcd:2379
systemctl daemon-reload
#查看日志启动是否报错
journalctl -u flanneld
这是由于linux还有底层的iptables,所以在node上分别执行:
iptables -P INPUT ACCEPT
iptables -P FORWARD ACCEPT
iptables -F
iptables -L -n