genconfig hosts produces wrong /etc/hosts - HPC Community - High Performance Computing (HPC) Community

newton · #1 (**permalink**) November 20th, 2008, 05:05 PM

Hi,

to me it seems that "genconfig hosts" produces a wrong /etc/hosts:

Code:

[root@kusu1 ~]# genconfig hosts
# 
# Dynamically generated by: genconfig  (Do not edit!)
#
127.0.0.1       localhost.localdomain   localhost
10.0.0.1        kusu1.kusu      kusu1-eth0.kusu kusu1-eth0
10.0.0.2        compute-00-00.kusu      compute-00-00-eth0.kusu compute-00-00-eth0      compute-00-00
10.0.0.3        compute-00-01.kusu      compute-00-01-eth0.kusu compute-00-01-eth0      compute-00-01
10.0.0.4        compute-00-02.kusu      compute-00-02-eth0.kusu compute-00-02-eth0      compute-00-02
10.0.0.5        compute-00-03.kusu      compute-00-03-eth0.kusu compute-00-03-eth0      compute-00-03
192.168.0.100   kusu1.mydomain.de       kusu1-eth1.kusu kusu1-eth1      kusu1

whereas ifconfig tells me, that the ip of kusu1 is 192.168.0.166:

Code:

[root@kusu1 ~]# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:1A:92:54:44:67  
          inet addr:10.0.0.1  Bcast:10.0.0.255  Mask:255.255.255.0
          inet6 addr: fe80::21a:92ff:fe54:4467/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:10337 errors:0 dropped:0 overruns:0 frame:0
          TX packets:12193 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:2030259 (1.9 MiB)  TX bytes:6685259 (6.3 MiB)
          Memory:c8200000-c8220000 

eth1      Link encap:Ethernet  HWaddr 00:1A:92:54:44:66  
          inet addr:192.168.0.166  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::21a:92ff:fe54:4466/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1776 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1241 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:191558 (187.0 KiB)  TX bytes:175424 (171.3 KiB)
          Memory:c8220000-c8240000

I came across that, because I run some test, and the very first one tests ssh connectivity.
And ssh kusu1 only works if I manually edit /etc/hosts (allthough it tells me I shouldn't

)
Maybe I miss something?
I run kusu 1.0 on centos 5.2.

regards

ltsai · #2 (**permalink**) November 21st, 2008, 02:33 AM

Thanks for trying out Project Kusu.

For eth1(public network), was it set to dhcp during installation?

newton · #3 (**permalink**) November 21st, 2008, 09:31 AM

Yes, eth1 uses dhcp.

ltsai · #4 (**permalink**) November 21st, 2008, 10:04 AM

Can you provide the output of netedit -l?

newton · #5 (**permalink**) November 21st, 2008, 10:06 AM

Code:

[root@kusu1 ~]# netedit -l

Network ID Device       Network       Subnet          Network Description                      Interface Type
========== ======       =======       ======          ===================                      ==============
1          eth1         192.168.0.0   255.255.255.0   public                                   public
2          eth0         10.0.0.0      255.255.0.0     cluster                                  provision

ltsai · #6 (**permalink**) November 21st, 2008, 10:52 AM

Was eth1 changed to dhcp after installation? From netedit -l, it looks like it was set to static ip during installation?

newton · #7 (**permalink**) November 21st, 2008, 10:58 AM

I am not shure any more.
I had a problem with eth0, which was not active. At install I set it to static (eth0), but then for some reason it did not get activated and was set to dhcp. I set it again to static and activated it. It survived a couple of reboots, but not all. So I had to do the process again.
Anyway, maybe in the process of changing things for eth0, I changed also things for eth1.

ltsai · #8 (**permalink**) November 21st, 2008, 11:37 AM

Can you post the following files:

/etc/sysconfig/network-scripts/ifcfg-eth0 and
/etc/sysconfig/network-scripts/ifcfg-eth1

newton · #9 (**permalink**) November 24th, 2008, 05:09 PM

eth0:

Code:

# Intel Corporation 80003ES2LAN Gigabit Ethernet Controller (Copper)
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=none
HWADDR=00:1a:92:54:44:67
NETMASK=255.255.255.0
IPADDR=10.0.0.1
GATEWAY=192.168.0.1
TYPE=Ethernet
USERCTL=no
IPV6INIT=no
PEERDNS=yes

eth1:

Code:

# Intel Corporation 80003ES2LAN Gigabit Ethernet Controller (Copper)
DEVICE=eth1
ONBOOT=yes
BOOTPROTO=dhcp
HWADDR=00:1a:92:54:44:66
TYPE=Ethernet

Quote:

Was eth1 changed to dhcp after installation?

Rereading my personal installation log this weekend, I found that after installation, eth1 was not activated.
So yes, I changed eth1 to dhcp after installation.
And now I think I also remember that I assigned a static adress during installation. But because the card did not get activated, I changed it.

I should probably reformulate my question: How do I make genconfig aware of my change of the network settings?

Sorry for beeing sloppy in previous posts ...

ltsai · #10 (**permalink**) November 25th, 2008, 03:11 PM

You can change the database entries to ensure that eth1 is on dhcp.

# mysql -u root kusudb
# UPDATE networks set network='', subnet='', gateway='', startip='', usingdhcp=True where netid=1;

This should fix the tables and allow genconfig hosts to create the correct /etc/hosts.

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