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IP ADDR

Posted on 2014-09-20
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Last Modified: 2014-09-24
I tried to change to a static IP address from working DHCP model. When I do a network restart I get the following:

service network restart

Restarting network (via systemctl):  Job for network.service failed. See 'systemctl status network.service' and 'journalctl -xn' for details.


When I look for details:

Failed to start LSB: Bring up/down networking.

In my IP settings I have:

TYPE=Ethernet
BOOTPROTO=static
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
NAME=eno16777736
UUID=a68ce778-9b60-4ec5-a296-eb9ec2fe471a
ONBOOT=yes
HWADDR=00:0C:29:92:73:39
PEERDNS=yes
PEERROUTES=yes
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
IPADDR=192.168.0.136
NETMASK=255.255.255.0
GATEWAY=192.168.0.1

If I reboot ... seems like I can SSH so somehow its getting the network IP right.
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Question by:Starquest321
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14 Comments
 
LVL 15

Assisted Solution

by:Insoftservice
Insoftservice earned 222 total points
ID: 40334488
What is the issue . Did not got your question.
i hope your network is working right.
If no you could even neat
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Author Comment

by:Starquest321
ID: 40334491
When I issue the command:

service network restart

I get the error:

Failed to start LSB: Bring up/down networking.
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LVL 28

Assisted Solution

by:Jan Springer
Jan Springer earned 223 total points
ID: 40334503
This should be the first line in your config file:

DEVICE="eth0"

Change it to what your device should be called (ifconfig)

Your BOOTPROTO should = none

And is you have Network Manager installed:

NM_CONTROLLED="no"
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Author Comment

by:Starquest321
ID: 40334512
Now I updated:

Still error:


DEVICE="eno16777736"
TYPE=Ethernet
BOOTPROTO=NONE
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
NAME=eno16777736
UUID=a68ce778-9b60-4ec5-a296-eb9ec2fe471a
ONBOOT=yes
HWADDR=00:0C:29:92:73:39
PEERDNS=yes
PEERROUTES=yes
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
IPADDR=192.168.0.136
NETMASK=255.255.255.0
GATEWAY=192.168.0.1
NM_CONTROLLED="no"
0
 
LVL 15

Assisted Solution

by:Insoftservice
Insoftservice earned 222 total points
ID: 40334517
DEVICE="eno16777736"
to DEVICE=eth0

use neat if you are using gui mode.

cat /etc/sysconfig/network-scripts/ifcfg-eth0
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LVL 28

Accepted Solution

by:
Jan Springer earned 223 total points
ID: 40334537
if you do "ifconfig", it will show you your devices by name.
0
 

Author Comment

by:Starquest321
ID: 40334556
My device name is eno16777736 . . .so how can I just change to eno0?
Don't I need some other setup?

 ifconfig
eno16777736: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.0.136  netmask 255.255.255.0  broadcast 192.168.0.255
        inet6 fdbc:f108:fdb1:0:20c:29ff:fe95:4e17  prefixlen 64  scopeid 0x0<global>
        inet6 fe80::20c:29ff:fe95:4e17  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:95:4e:17  txqueuelen 1000  (Ethernet)
        RX packets 5101  bytes 2403674 (2.2 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 3489  bytes 628597 (613.8 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 0  (Local Loopback)
        RX packets 8  bytes 660 (660.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 8  bytes 660 (660.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
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LVL 28

Assisted Solution

by:Jan Springer
Jan Springer earned 223 total points
ID: 40334566
No, if 'ifconfig' picks that up then that's what you should use.

When you make the final changes:

ifdown eno16777736

and then:

ifup eno16777736

Check /var/log/messages for any errors.
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LVL 15

Assisted Solution

by:Insoftservice
Insoftservice earned 222 total points
ID: 40334570
I hope NetworkManager  is enabled

systemctl status NetworkManager.service

ps aux | grep -I net   # will probably find NetworkManager still running.
chkconfig NetworkManager off

OR

systemctl stop NetworkManager.service

systemctl disable NetworkManager.service

systemctl restart network.service

systemctl enable network.service
systemctl NetworkManager disable
0
 

Author Comment

by:Starquest321
ID: 40334588
I followed this:
I hope NetworkManager  is enabled

systemctl status NetworkManager.service

ps aux | grep -I net   # will probably find NetworkManager still running.
chkconfig NetworkManager off

Then I did:


ifdown eno16777736

and then:

ifup eno16777736

Now I messed everything up:

I get on the ifup command:

The device eno16777736 has a different MAC address than expected, ignoring.

And I cannot SSH....

Urgent help
0
 

Author Comment

by:Starquest321
ID: 40334604
This command messed me up:

chkconfig NetworkManager off

I had to turn it back on and revert changes...
But I am still on dynmic
0
 
LVL 28

Assisted Solution

by:Jan Springer
Jan Springer earned 223 total points
ID: 40334627
make sure that the mac address listed for the device (via ifconfig) is the same mac address listed in your file.

so, turn NM off, update your ifcfg-eno* file and ifdown/ifup the interface.
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LVL 15

Assisted Solution

by:Insoftservice
Insoftservice earned 222 total points
ID: 40334878
I mean to say that if network manager is enabled and it would not allow to connect.
After disabling your NM configure your file again and restart the service.
I thought you might have missed the point of NM and thats the reason i did not told to configure it again
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LVL 62

Assisted Solution

by:gheist
gheist earned 55 total points
ID: 40335028
Why dont you set static DHCP reservation?

Minimal config file should look like this:
DEVICE="eno16777736"
BOOTPROTO=none
ONBOOT=yes
IPADDR=192.168.0.136
NETMASK=255.255.255.0
GATEWAY=192.168.0.1
BROADCAST=192.168.0.255
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