Configurations in /etc/hosts file unexpectedly become wrong
Issue
- After setting new hostname, IP address and alias by system-config-network, the configuration in /etc/hosts file is deleted or become wrong.
Verify the current content in /etc/hosts file
1. # cat /etc/hosts
127.0.0.1 www.test.co.jp www localhost.localdomain localhost
Add a configuration by system-config-network
2. # system-config-network
Host Tab -> New Tab
192.168.0.1 www.test.co.jp www <-add
See the contents in /etc/hosts file
3. # cat /etc/hosts
127.0.0.1 <-'hostname' and 'alias' are missed
192.168.0.1 www.test.co.jp www
or
<-'IP address', 'hostname' and 'alias' are all deleted
192.168.0.1 www.test.co.jp www
Environment
Red Hat Enterprise Linux 5.2
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