有时虚拟机创建后发现虚拟机规格太小，满足不了业务需求。于是需要在线拉伸虚拟机的规格。修改controller和各个computer节点的nova.cnf文件，打开下面两个参数[root@control ~]# vim /etc/nova/nova.conf[root@node ~]# vim /etc/nova/nova.confallow_resize_to_same_host=Truesche

1）新建虚拟/var/log/nova/nova-conductor.log报错"HostMappingNotFound: Host 'compute1' is not mapped to any cell"#需要执行：nova-manage cell_v2 discover_hosts --verbose2）新建虚拟机超时报"did not finish being created even a

1、打开监听vi /etc/libvirt/qemu.confvnc_listen = "0.0.0.02、重启进程service libvirtd restart3、对于已经开启的虚拟机需要关闭再开机一下，另外最好指定虚拟机的端口，不然不知道连接的是哪一台虚拟机# virsh edit kvm01<graphics type='vnc' port='5910' autop

1、查看当前系统版本# cat /etc/redhat-releaseCentOS Linux release 7.2.1511 (Core)2、yum安装依赖的程序包yum install zlib libxml libjpeg freetype libpng gd curl libiconv zlib-devel libxml2-devel libjpeg-devel free...

查看证书有效期cd /etc/kubernetes/pkiopenssl x509 -in apiserver.crt -text -noout查看相关kubectl api-resources查看所有资源定义kubectl api-versions查看可用的apiversionkubectl get cs查看k8s集群状态kubectl get ns查看所有命名空间kubectl get nod

 用于pyhon连接mysql的函数，可传入sql语句、和where等参数#!/usr/bin/python# -*- coding: UTF-8 -*-import MySQLdbdef mysql_select(sql,parm):'''这是查询使用的函数'''#global datadb = MySQLdb.connect...