/etc/hosts modification isn't affected

daniil · 04-26-2011, 12:10 AM

Hello

I have embedded linux (apm distributive).
I modify /etc/hosts file and that changes not affected.

What could be the problem? Any suggests.

Example
/etc/hosts
127.0.0.1 localhost
127.0.0.1 hana-009

ping hana-009
ping: bad address 'hana-009'

k3lt01 · 04-26-2011, 12:21 AM

Quote:

Originally Posted by daniil

Hello

I have embedded linux (apm distributive).
I modify /etc/hosts file and that changes not affected.

What could be the problem? Any suggests.

Example
/etc/hosts
127.0.0.1 localhost
127.0.0.1 hana-009

ping hana-009
ping: bad address 'hana-009'

This is mine so I would suggest you need to put another 1 in your hana-009 line.

Code:

127.0.0.1	localhost
127.0.1.1	michael-laptop

daniil · 04-26-2011, 12:34 AM

Quote:

Originally Posted by k3lt01

This is mine so I would suggest you need to put another 1 in your hana-009 line.

Code:

127.0.0.1	localhost
127.0.1.1	michael-laptop

It doesn't work.

I have another kind of problem. The problem is that /etc/hosts didn't affected at all. Even if remove locahost. ping localhost works.
It seems that there is a different file.

k3lt01 · 04-26-2011, 01:02 AM

Take a look at hosts.conf and resolve.conf

daniil · 04-26-2011, 01:19 AM

Quote:

Originally Posted by k3lt01

Take a look at hosts.conf and resolve.conf

Actually I don't have host.conf. So I have created one

#host.conf
orders hosts,bind
multi on

#resolve.conf.
nameserver xx.xx.xx.xx
nameserver xx.xx.xx.xx

Actually my network works.

jschiwal · 04-26-2011, 01:48 AM

Code:

#
# /etc/host.conf - resolver configuration file
#
# Please read the manual page host.conf(5) for more information.
#
#
# The following option is only used by binaries linked against
# libc4 or libc5. This line should be in sync with the "hosts"
# option in /etc/nsswitch.conf.
#
order hosts, bind
#
# The following options are used by the resolver library:
#
multi on

You may want to add "order hosts, bind" to /etc/host.conf

Also, do you have an /etc/nsswitch file?
It should include lines

Code:

hosts:          files mdns4_minimal [NOTFOUND=return] dns
networks:       files dns

You can run "getent hosts www.google.con" to test if host resolution is running.

daniil · 04-26-2011, 02:08 AM

Quote:

Originally Posted by jschiwal

Code:

#
# /etc/host.conf - resolver configuration file
#
# Please read the manual page host.conf(5) for more information.
#
#
# The following option is only used by binaries linked against
# libc4 or libc5. This line should be in sync with the "hosts"
# option in /etc/nsswitch.conf.
#
order hosts, bind
#
# The following options are used by the resolver library:
#
multi on

You may want to add "order hosts, bind" to /etc/host.conf

Also, do you have an /etc/nsswitch file?
It should include lines

Code:

hosts:          files mdns4_minimal [NOTFOUND=return] dns
networks:       files dns

You can run "getent hosts www.google.con" to test if host resolution is running.

It seems the distributive has non standard configuration.

Also there is a strange thing that if I remove localhost entry from /etc/hosts; ping localhost works. On my another board it doesn't.

daniil · 04-26-2011, 03:19 AM

Quote:

Originally Posted by daniil

It seems the distributive has non standard configuration.

Also there is a strange thing that if I remove localhost entry from /etc/hosts; ping localhost works. On my another board it doesn't.

The solution is always the simplest.

In that APM distributed there is wired system of network configuration.
All I had to do just down and up the eth0.

Thanks for you replies.
It enrich my linux knowledge