[plug] wrong default route

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Author: jun
Date:  
To: plug
Subject: [plug] wrong default route

I have a server out there that i remotely manage. i had a downtime
the other day when we restarted network services. then we found a
wrong default route is laoded on the server upon restart. i have the
configs below. The defaultroute should be GATEWAY=192.168.65.142 but
it loaded GATEWAY=10.2.1.14 upon restart.
Could it be the sequence the interfaces are enabled from eth0 then
eth1 then eth5, the last interface activated its own gateway as default?

Should i delete the gateway on eth0 and eth5 such that it would make
sure only the defaultgateway on eth1 is loaded upon restart?

i just can't restart network services and see what happens, the server
is in production and it takes a lot of authorization before i can
restart it.

thanks,
june


/etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
ONBOOT=no
BOOTPROTO=static
IPADDR=10.11.13.150
NETMASK=255.255.255.192
GATEWAY=10.11.13.129
HOSTNAME=web2003
HWADDR=00:19:BB:AB:CD:EF
ETHTOOL_OPTS="speed
100 duplex full autoneg off"


/etc/sysconfig/network-scripts/ifcfg-eth1
DEVICE=eth1
HWADDR=00:19:BB:AA:DD:CC
ONBOOT=yes
TYPE=Ethernet
IPADDR=192.168.65.131
NETMASK=255.255.255.240
GATEWAY=192.168.65.142
HOSTNAME=web2003.domain.net
ETHTOOL_OPTS="speed
100 duplex full autoneg off"


/etc/sysconfig/network-scripts/ifcfg-eth5
DEVICE=eth5
HWADDR=00:18:FE:BB:CC:DD
ONBOOT=yes
TYPE=Ethernet
BOOTPROTO=static
IPADDR=10.2.1.1
NETMASK=255.255.255.240
GATEWAY=10.2.1.14
HOSTNAME=web2003.domain.net
ETHTOOL_OPTS="speed
100 duplex full autoneg off"





"Hello, this is IT support. Have you tried turning if OFF then ON?"

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----- Forwarded Message ----
From: "GARIN, RICARDO, ATTGNS" <rg6523@???>
To: rgarin22@???
Sent: Thursday, July 3, 2008 10:09:47 AM
Subject: FW: Outage Summary: William Grand Prix TT# 109774001 (Redditch)




thanks,
Ricardo Garin
Jr.
Technical Account
Manager
Hosting Operations and
Application Services
Office:
770 750 7630
Mobile: 770 595 0806
This e-mail and any files transmitted with it are
AT&T property, are confidential, and are intended solely for the use of the
individual or entity to whom this email is addressed. If you are not one of the
named recipient(s), or otherwise have reason to believe that you have received
this message in error, please notify the sender and delete this message
immediately from this computer. Any other uses, retention, dissemination,
forwarding, printing, or copying of this e-mail is strictly prohibited.



________________________________
From: OPLEY, GARY E, ATTGNS
Sent: Thursday, July 03, 2008 9:40 AM
To: GARIN, RICARDO,
ATTGNS
Cc: JONES, DAVID J, ATTSBLD; HARKER, CHARLES R, ATTGNS;
HAWKINS, JAMES, ATTSBLD
Subject: RE: Outage Summary: William Grand
Prix TT# 109774001 (Redditch)


Any update?

Gary E. Opley
Client Service Manager - Hosting Operations
& Application Services
AT&T - Worldwide Customer Service (WCS)
Main Ofc: 770-750-3890
Remote Ofc: 770-887-8570
Mobile: 770-329-7914
opley@???
This e-mail
and any files transmitted with it are AT&T property, are confidential, and
are intended solely for the use of the individual or entity to whom this email
is addressed. If you are not one of the named recipient(s), or otherwise have
reason to believe that you have received this message in error, please notify
the sender and delete this message immediately from this computer. Any other
uses, retention, dissemination, forwarding, printing, or copying of this e-mail
is strictly prohibited.



________________________________
From: GARIN, RICARDO, ATTGNS
Sent: Wednesday, July 02, 2008 10:45 AM
To: OPLEY, GARY E,
ATTGNS
Cc: JONES, DAVID J, ATTSBLD; HARKER, CHARLES R, ATTGNS;
HAWKINS, JAMES, ATTSBLD
Subject: RE: Outage Summary: William Grand
Prix TT# 109774001 (Redditch)


After the hostname change, network services has been
restarted and caused for the routing table to lost the proper default route.
There's nothing wrong in the MOP nor incomplete and
the recommendation is to "add checking of default route" -- network
properties like ip address, netmask, gateway, were not changed. Though a
network restart is needed for the hostname change. As I further check the
server this morning, i found there were 3 default routes that is configured on
the server - w111647lweb2003. I suspect that the 3rd
route had overridden the supposedly default route - GATEWAY=195.33.56.142 which is the front-end. Hope
our other Linux TAMs can share their insights.



/etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
ONBOOT=no
BOOTPROTO=static
IPADDR=10.61.3.150
NETMASK=255.255.255.192
GATEWAY=10.61.3.129
HOSTNAME=w111647lweb2003
HWADDR=00:19:BB:CB:CE:F8
ETHTOOL_OPTS="speed
100 duplex full autoneg off"

cat
/etc/sysconfig/network-scripts/ifcfg-eth1
DEVICE=eth1
HWADDR=00:19:BB:CB:CE:FA
ONBOOT=yes
TYPE=Ethernet
IPADDR=195.33.56.131
NETMASK=255.255.255.240
GATEWAY=195.33.56.142
HOSTNAME=w111647lweb2003.attemea.net
ETHTOOL_OPTS="speed
100 duplex full autoneg off"

/etc/sysconfig/network-scripts/ifcfg-eth5
DEVICE=eth5
HWADDR=00:18:FE:80:01:40
ONBOOT=yes
TYPE=Ethernet
BOOTPROTO=static
IPADDR=10.2.1.1
NETMASK=255.255.255.240
GATEWAY=10.2.1.14
HOSTNAME=w111647lweb2003.attemea.net
ETHTOOL_OPTS="speed
100 duplex full autoneg off"


thanks,
Ricardo Garin
Jr.
Technical Account
Manager
Hosting Operations and
Application Services
Office:
770 750 7630
Mobile: 770 595 0806
This e-mail and any files transmitted with it are
AT&T property, are confidential, and are intended solely for the use of the
individual or entity to whom this email is addressed. If you are not one of the
named recipient(s), or otherwise have reason to believe that you have received
this message in error, please notify the sender and delete this message
immediately from this computer. Any other uses, retention, dissemination,
forwarding, printing, or copying of this e-mail is strictly prohibited.



________________________________
From: OPLEY, GARY E, ATTGNS
Sent: Wednesday, July 02, 2008 10:29 AM
To: GARIN, RICARDO,
ATTGNS
Subject: FW: Outage Summary: William Grand Prix TT# 109774001
(Redditch)


Ricardo,

So it's probably my limited understanding.......but how
is it that the default network route would have been removed during this
change?

The summary points to a problem with the MOP/change -
however, I don't understand the relationship (if any).

Gary E. Opley
Client Service Manager - Hosting Operations
& Application Services
AT&T - Worldwide Customer Service (WCS)
Main Ofc: 770-750-3890
Remote Ofc: 770-887-8570
Mobile: 770-329-7914
opley@???
This e-mail
and any files transmitted with it are AT&T property, are confidential, and
are intended solely for the use of the individual or entity to whom this email
is addressed. If you are not one of the named recipient(s), or otherwise have
reason to believe that you have received this message in error, please notify
the sender and delete this message immediately from this computer. Any other
uses, retention, dissemination, forwarding, printing, or copying of this e-mail
is strictly prohibited.



________________________________
From: LAU, LEE WEI ANDREW (ANDREW), ATTWTS
Sent: Wednesday, July 02, 2008 7:30 AM
To: Gill
Directorate
Subject: Outage Summary: William Grand Prix TT# 109774001
(Redditch)



    AT&T  Proprietary Restricted Information. 
    Do  Not Forward Outside of Hosting Operations & Applications Services  Organization. 
Deal  Name   William Grand  Prix 
Date   7/2/08 
Ticket   109774001 
Severity   1 
SLA   Yes 
Duration   12:47am-4:00am  ET 
Impact  %   100 
Managed  Type   SOSS 
Caused By  Change?   Yes 
Asset   WWW.ATTWILLIAMS.COM 
CFN   1:08am  ET 
Reason for  CFN Miss   Cfnmet (Ticket popped at 12:47  but change is still ongoing until 1am) 
Problem  Description   www.attwilliams.com was  unavailable due to a missing default route. Added default route to restore  service. Root Cause is due to change. 


    Issue… 
    Receive an URL down  alarm. 


    Customer  Impact… 
    Customer's URL is not  accessible. 


    Resolution  Summary… 
    Network and MSS reported no  issue with their domain. Since ILO and SSH access are impeded by the issue  at Redditch , IDC Tech is engaged to  provide on-site assistance. TAM discovered default route is missing from  routing table. Default route is added and URL is  accessible. 


    Root  Cause… 
    Default route missing after  network service is restarted during  Vantive#1790131. 


    Action  Items… 
    1. Need to establish why  default route is missing after network service is restarted. (TAM)
2.  Need to include default route check as part of the MOP in future similar  change. (TAM) 



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