11.阶段11redis各知识点瑞客论坛问题汇总

1、1Device does not seem to be present1.1现象1.2原因及场景在 VMware 中安装的 linux 虚拟机出现了这个问题，问题的产生是因为之间做过部分的修改，clone 等操作。1.3解决方案1.修改 Centos 虚拟机克隆机的 HWADDR 为ifconfig-a的MAC地址形如：HWADDR=00:0C:29:90:A7:23然后再做以下操作:；2.2Connection activation failed2.1现象2.2原因及场景在 Redhat6 虚拟机下启动（start）eth0 报错 Error: failed: Device not mana

2、ged by NetworkManConnectionactivationError: Connection activation failed: Device not managed by Network Manrootc1node01 # rm -rf /etc/udev/rules.d/70-persistent-net rules rootc1node01 # rebootrootc1node01 # service network restartShutting down loack insterface:OKBringing up loack insterface:OKBringi

3、ng uperface eth0:OK rootc1node01 #rootc1node01 # service network restartShutting down loack insterface:OKBringing up loack insterface:OKBringing uperface eth0: Device eth0 does not seem to be present,delaying initialization.FAILEDBringing uperface eth0:Device eth0 does not seem to be prese nt, delay

4、ing initialization.原因：网络管理装置不被允许。2.3解决方案运行下列命令：3Theconnectionisnotforthisdevice3.1现象Connection activation failed: The connection is not for this device.rootc1node01 service network restartShutting down loack insterface:OKBringing up loack insterface:OKConnection activation failed: The connection is

5、not for this device. FAILEDchkconfig network off chkconfig network on service NetworkManager stopservice NetworkManager start3.2原因及场景在 VMware 中的 Linux6.8 虚拟机中，修改 eth0 中的 ip，然后重启（service network restart），报错：Connection device.activationfailed:Theconnectionisnotforthis3.3解决方案顺序执行如下命令：rootniejicai#chkconfigNetworkManager off rootniejicai#chkconfig netw