kubernetes k8s NodePort Service Nginx ClusterIP LoadBalancer Deployment Replicas

1禁用防火墙sudo ufw disable2 安装Selinuxsudo apt install selinux-utils3 关闭selinux防火墙(临时)sudo setenforce 04 永久关闭selinux防火墙sudo bash -c 'echo 'SELINUX=disabled' > /etc/selinux/conifg'5 启用Iptable转发sudo bash

kubernetes k8s kubeadm init kubectl

今天启动kafka zookeeper时报错;Unrecognized VM option '+UseCompressedOops'不能识别VM的参数UseCompressedOops解决办法：删除kafka-run-class.bat中的-XX:+UseCompressedOops参数即可原因：VM不支持该参数

spring boot application type WebApplicationType source code源码

MySQL 覆盖索引（Cover Index）