The/etc/resolv. conf file of RedHat5.5 is rewritten.

In the RedHat5.5 system of the company, after the/etc/resolv. conf file is configured, the network service is restarted and the file content is rewritten. After reading the official Red Hat documents, the following solutions are provided. Https://access.redhat.com/site/solutions/61921

The main cause of the problem is that the networkmanager service is enabled, and I personally think this service takes over the original network settings.

The solution is to configure the networkmanager configuration file.

1. Create a script. Vim/etc/NetworkManager/dispatcher. d/15-resolv

Content:

# Vim/etc/NetworkManager/dispatcher. d/15-resolv

#! /Bin/bash

#

# Description: script to override default resolv. conf file

# With customized file.

Cp-f/etc/resolv. conf. custom/etc/resolv. conf

2. Set File Permissions

# Chmod u + x/etc/NetworkManager/dispatcher. d/15-resolv

3. Create a file vi/etc/resolv. conf. custom

Nameserver xx. xx

Options single-request-reopen

4. Restart the service

Service NetworkManager restart