问题原因解决方案ping 域名失败但 ping IP 正常DNS 无法解析检查 resolv.conf / NAT 服务官方域名已失效改用 https://get.k3s.iosvclb-traefik 卡在 ContainerCreatingflannel 未启动 / 镜像拉取失败修复 DNS 或配置国内镜像dig 超时VMware NAT 转发挂重启 VMware NAT & DHCP 服务节

下载了k3s，用sudo systemctl status k3s命令，报错Failed to create sandbox for pod" err="rpc error: code = DeadlineExceeded desc = failed to get sandbox image \"rancher/mirrored-p。cd /var/lib/rancher/k3s/agent/et

org.flywaydb.core.internal.exception.FlywaySqlException:[ERROR] Unable to obtain connection from database (jdbc:h2:~/project) for user 'sa': Wronguser name or password [28000-200]给同学改bug，这个错我之前报...

网页页面报错servlet is not a servletpublic class ModifyPwdServlet extends HttpServlet要继承HttpServlet

照着第二版第一行代码敲的调用摄像头部分，因为编译器提示没有android.support.v4.content.fileprovider。就自己导了一个名字带provider的android.provider.DocumentsProvider报错信息如下：E/AndroidRuntime: FATAL EXCEPTION: mainProcess: com.example.cameraalbum