For reference. The NIC configuration file of RedHat9.0 can be located in the following three locations. /Etc/sysconfig/network-scripts/ifcfg-eth0/etc/sysconfig/networking/devices/ifcfg-eth0/etc/sysconfig/networking/profiles/default/ifcfg-eth0 by default only exist at/etc /For reference.
The NIC configuration file of RedHat 9.0 can be located in the following three locations.
By default, only the configuration files in/etc/sysconfig/network-scripts/exist, and no configuration files exist in the other two locations. When the/etc/init. d/network command is used to start the NIC, the configuration file in this directory is also directly read. Therefore, you can modify the parameters of the NIC only by modifying the file.
In addition, the configuration file in the/etc/sysconfig/networking/profiles/default directory is interesting. This configuration file cannot work independently, only when the/etc/sysconfig/network-scripts/directory contains a configuration file ~ The file in the/default directory takes effect.
At present it seems that the/etc/sysconfig/network-scripts/directory must have the ifcfg-eth0 configuration file, otherwise the NIC cannot be started when running the/etc/init. d/network command.
In addition, if there is a configuration file in the/etc/sysconfig/networking/profiles/default directory, the configuration file in the network-scripts directory will become a decoration and run/etc/init. in the d/network command, parameters are read from the configuration file of the default directory instead of from the configuration file of the network-scripts directory.
The above problem does not exist for RedHat AS4, but the configuration file in the/etc/sysconfig/network-scripts/directory takes effect.
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