kvm 虚拟机出现挂死现象，通过vnc不能访问，virsh list查看实例运行正常；使用kvm dump转储虚拟机内存信息分析内核是否出现panic使用virsh qemu-monitor-command VM_NAME --hmp "dump-guest-memory -z /PATH/DUMP_FILE"1.在正常主机上安装kernel debug和crash#确认kernel版...

显示信息：AMD Processor，this hardware has not undergone upstream testing原因： 虚拟机内的cpu类型与驱动兼容性问题导致解决方法：在计算节点上，修改/etc/nova/nova.conf 配置文件中[libvirtd]部分配置，添加cpu_mode和cpu_models配置，配置如下，cpu_mode = customecpu_mode

测试代码：#include<stdio.h>#include<stdlib.h>#include<string.h>void main() {char a;printf("please set:");printf("malloc 10M virt mem:");scanf("%s", &a);char *p = (char*)malloc(10*1024

1.安装mysql8.0rpm -ivh https://dev.mysql.com/get/mysql80-community-release-el7-3.noarch.rpmrpm -ivh mysql-servermysqld --initializesystemctl start mysqldmysqladmin -uroot -p2.安装appache、phpyum -y ...

显示信息：AMD Processor，this hardware has not undergone upstream testing原因： 虚拟机内的cpu类型与驱动兼容性问题导致解决方法：在计算节点上，修改/etc/nova/nova.conf 配置文件中[libvirtd]部分配置，添加cpu_mode和cpu_models配置，配置如下，cpu_mode = customecpu_mode

使用python实现流量监控，实现watch 执行下边的python脚本，参数为监控的网卡名#!/usr/bin/pythonimport osimport timeimport sysshell = “cat /proc/net/dev | sed -e ‘s/

报错信息：2020-12-14 9:21:57 6 [Warning] Failed to load slave replication state from table mysql.gtid_slave_pos: 1932: Table 'mysql.gtid_slave_pos' doesn't exist in engine2020-12-14 9:21:57 0 [Note] Readin