XXX系统部署总结
1.涉及技术及中间件
OpenResty
docker容器
k8s容器编排
keepalived
haproxy
mongodb
minio
ELK
openresty（基于 [Nginx](http://openresty.org/cn/nginx.html) 与 Lua 的高性能 Web 平台)
redis
nginx
2.安装方式
#所有k8s集群节点均安装基础组件docker容器
#k8s集群三主多从部署，三主通过keepalived、haproxy做高可用，从节点通过连接keepalived的虚拟ip跟主节点通讯
#redis三主三从集群部署在三台服务器
#mongodb一主一从一仲裁部署在三台服务器上
#nginx部署两台服务器
3.Docker
Docker的启动与停止
启动docker：sudo systemctl start docker
停止docker：sudo systemctl stop docker
重启docker：sudo systemctl restart docker
查看docker状态：sudo systemctl status docker
开机启动：sudo systemctl enable docker
查看docker概要信息:docker info
查看docker帮助文档:docker --help
\#删除exited状态的容器
##sudo docker rm $(sudo docker ps -qf status=exited)
#容器创建时指定docker重启通过参数--restart=always容器自动启动docker run --restart=always 如果创建时未指定 --restart=always ,可通过update 命令docker update --restart=always xxx
3、 批量操作容器
docker 启动所有的容器
docker start $(docker ps -a | awk '{ print $1}' | tail -n +2)
docker 关闭所有的容器
docker stop $(docker ps -a | awk '{ print $1}' | tail -n +2)
docker 删除所有的容器
docker rm $(docker ps -a | awk '{ print $1}' | tail -n +2)#删除所有镜像~~~~sudo docker rmi $(docker images -q)
kubectl
source <(kubectl completion bash) #命令补全
启动-停止-重启-状态
master
systemctl daemon-reload
systemctl start kube-apiserver
systemctl start kube-controller-manager
systemctl start kube-scheduler
etcd
systemctl start etcd
systemctl stop etcd
systemctl restart etcd
client
systemctl start kube-proxy -l
systemctl start docker -l
systemctl start kubelet -l
status
systemctl status etcd
systemctl status kube-apiserver -l
systemctl status kube-controller-manager -l
systemctl status kube-scheduler
systemctl status kube-proxy -l
systemctl status docker -l
systemctl status kubelet -l
常用命令
kubectl get pods
kubectl get rc
kubectl get service
kubectl get componentstatuses
kubectl get endpoints
kubectl cluster-info
kubectl create -f redis-master-controller.yaml
kubectl delete -f redis-master-controller.yaml
kubectl delete pod nginx-772ai
kubectl logs -f pods/heapster-xxxxx -n kube-system
#查看日志
kubectl scale rc redis-slave --replicas=3
#修改RC的副本数量，来实现Pod的动态缩放
etcdctl cluster-health
#检查网络集群健康状态
etcdctl --endpoints=https://192.168.71.221:2379 cluster-health
#带有安全认证检查网络集群健康状态
etcdctl member list
etcdctl set /k8s/network/config '{ "Network": "10.1.0.0/16" }'
etcdctl get /k8s/network/config
基础进阶
kubectl get services kubernetes-dashboard -n kube-system
#查看所有service
kubectl get deployment kubernetes-dashboard -n kube-system
#查看所有发布
kubectl get pods --all-namespaces
#查看所有pod
kubectl get pods -o wide --all-namespaces #查看所有pod的IP及节点
kubectl get pods -n kube-system | grep dashboard
kubectl describe service/kubernetes-dashboard --namespace="kube-system"
kubectl describe pods/kubernetes-dashboard-349859023-g6q8c --namespace="kube-system"
#指定类型查看
kubectl describe pod nginx-772ai
#查看pod详细信息
kubectl scale rc nginx --replicas=5
# 动态伸缩
kubectl scale deployment redis-slave --replicas=5
#动态伸缩
kubectl scale --replicas=2 -f redis-slave-deployment.yaml
#动态伸缩
kubectl exec -it redis-master-1033017107-q47hh /bin/bash
#进入容器
kubectl label nodes node1 zone=north
#增加节点lable值 spec.nodeSelector: zone: north #指定pod在哪个节点
kubectl get nodes -lzone
#获取zone的节点
kubectl label pod redis-master-1033017107-q47hh role=master
#增加lable值 [key]=[value]
kubectl label pod redis-master-1033017107-q47hh role-
#删除lable值
kubectl label pod redis-master-1033017107-q47hh role=backend --overwrite
#修改lable值
kubectl rolling-update redis-master -f redis-master-controller-v2.yaml
#配置文件滚动升级
kubectl rolling-update redis-master --image=redis-master:2.0
#命令升级
kubectl rolling-update redis-master --image=redis-master:1.0 --rollback
#pod版本回滚