centos issues with eth0 and eth1 | |
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After a power outage (yes no UPS) CentOs crash I ran into an issue were for some reason or another the physical network adapter became eth1 marked as a different MAC ADDR there was no ifcfg-eth1 file in /etc/sysconfig/network-scripts changes to ifcfg-eth0 would not take any affect. the following steps resolved my issue. references: https://www.banym.de/linux/centos/change-network-device-name-from-eth1-back-to-eth0 The interface name of a network device increases if the mac address of the physical or virtual network card changes. A common case is if you made a clone of a virtual machine for example via VMware or KVM or replaced a physical network card in a non virtualized server. If it’s a CentOS 6 machine you need to change 2 files to rename the interface for example from eth1 back to eth0. One file is the udev rule for network devices which is located here: /etc/udev/rules.d/70-persistent-net.rules Copy the new mac address to the line of your eth0 rule and delete the new rule for eth1. # PCI device 0x15ad:0x07b0 (vmxnet3)SUBSYSTEM==”net”, ACTION==”add”, DRIVERS==”?*”, ATTR{address}==”00:50:56:b2:23:e0″, ATTR{type}==”1″, KERNEL==”eth*”, NAME=”eth0″ Modify the network configuration located under: /etc/sysconfig/network-scripts/ifcfg-eth0 and replace the old ip with the new one and the old mac address with the new mac address. To be sure everything works fine reboot your machine. | |
2015-02-13 17:20:44 | gstlouis |