Re: [Networker] Problem backing up a server with multiple IP addresses

Hello,
Add a PTR  ( reverse look-up ) in your DNS server ( dns server specified 
on  client IP settings).
Typically you will see Forward look-up zones( in the dns server config) 
where your primary server adders name is specified
and 
Reverse look-up zones --This is where you need PTR record.
go to
155.247.X.X subnet and add .
Most DNS server are configured for Forward and Reverse look-up but not 
nassasarily, in that case you may have to request Network admins to create 
reverse look-up zone for you.
HTH




Stan Horwitz <stan AT TEMPLE DOT EDU> 
Sent by: EMC NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU>
03/28/2008 01:57 PM
Please respond to
EMC NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU>; Please respond 
to
Stan Horwitz <stan AT TEMPLE DOT EDU>


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Subject
Re: [Networker] Problem backing up a server with multiple IP addresses






Actually, I take that back. Reverse DNS does not work for the client 
on the NSR server, but how do I fix that?

On Mar 28, 2008, at 2:41 PM, Stan Horwitz wrote:
> On Mar 28, 2008, at 2:25 PM, Tim Mooney wrote:
>>
>> Nearly the same way you would on Solaris.  netstat -rn to show 
>> routes,
>> "route add" with some additional bits to add them.  To make the route
>> change survive reboots, you'll need to add the arguments to the 
>> "route
>> add" command to a file in /etc/sysconfig/network-scripts -- probably
>> something like "/etc/sysconfig-network-scripts/route-backupserver".
>>
>> I doubt it's a routing issue, though.
>>
>> Stan, can you post what error messages or symptoms you're actually 
>> seeing?
>
> The client is Temple's main web server. I would think that if a 
> routing problem occurred there, our help desk would be swamped with 
> calls.
>
> Here's what I get when I try a recover on this Linux client ...
>
> [root@albatross logs]$ recover
> Reverse DNS lookup failed for address 155.247.166.60
> 53362:recover: Cannot start session with server 
> xxxx.ocis.temple.edu: RPC receive operation failed.  A network 
> connection could not be established with the host.
>
> The 155.247.166.60 IP number is not the client's primary address. 
> This client's primary address is 155.247.166.94.
>
> Here's what happens with a server initiated backup ...
>
> NetWorker savegroup: (alert) test2 completed, Total 1 client(s), 1 
> Failed. Please see group completion details for more information.
>
> Failed: albatross
>
> Start time:   Fri Mar 28 13:01:18 2008
> End time:     Fri Mar 28 13:02:02 2008
>
>
> --- Unsuccessful Save Sets ---
>
> * albatross:All 5 retries attempted
> * albatross:All 39078:savefs: SYSTEM error: Host name verification 
> failed - unknown host: 155.247.166.60
> * albatross:All
> * albatross:All 7183:savefs: Cannot access nsr server `xxxx'
> * albatross:All savefs albatross: failed.
>    * <ERROR> :  Failed with error(s)
>
> All the usual network tests (traceroute, nslookup, reverse dns, all 
> work fine between the NSR server and this client).
>
> On the client, ifconfig -a looks like ...
>
> eth0      Link encap:Ethernet  HWaddr 00:14:22:22:70:8E
>          inet addr:155.247.166.94  Bcast:155.247.167.255  Mask: 
> 255.255.254.0
>          inet6 addr: fe80::214:22ff:fe22:708e/64 Scope:Link
>          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>          RX packets:348737173 errors:0 dropped:0 overruns:0 frame:0
>          TX packets:414493435 errors:0 dropped:0 overruns:0 carrier:0
>          collisions:0 txqueuelen:1000
>          RX bytes:3190179819 (2.9 GiB)  TX bytes:2294059543 (2.1 GiB)
>          Base address:0xecc0 Memory:fe6e0000-fe700000
>
> eth0:1    Link encap:Ethernet  HWaddr 00:14:22:22:70:8E
>          inet addr:155.247.166.60  Bcast:155.247.166.255  Mask: 
> 255.255.255.0
>          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>          Base address:0xecc0 Memory:fe6e0000-fe700000
>
> eth0:2    Link encap:Ethernet  HWaddr 00:14:22:22:70:8E
>          inet addr:155.247.167.14  Bcast:155.247.166.255  Mask: 
> 255.255.254.0
>          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>          Base address:0xecc0 Memory:fe6e0000-fe700000
>
> eth0:3    Link encap:Ethernet  HWaddr 00:14:22:22:70:8E
>          inet addr:155.247.166.90  Bcast:155.247.166.255  Mask: 
> 255.255.255.0
>          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>          Base address:0xecc0 Memory:fe6e0000-fe700000
>
> eth0:4    Link encap:Ethernet  HWaddr 00:14:22:22:70:8E
>          inet addr:155.247.166.226  Bcast:155.247.166.255  Mask: 
> 255.255.255.0
>          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>          Base address:0xecc0 Memory:fe6e0000-fe700000
>
> eth0:5    Link encap:Ethernet  HWaddr 00:14:22:22:70:8E
>          inet addr:155.247.166.19  Bcast:155.247.166.255  Mask: 
> 255.255.255.0
>          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>          Base address:0xecc0 Memory:fe6e0000-fe700000
>
> eth0:6    Link encap:Ethernet  HWaddr 00:14:22:22:70:8E
>          inet addr:155.247.166.96  Bcast:155.247.166.255  Mask: 
> 255.255.255.0
>          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>          Base address:0xecc0 Memory:fe6e0000-fe700000
>
> eth1      Link encap:Ethernet  HWaddr 00:14:22:22:70:8F
>          BROADCAST MULTICAST  MTU:1500  Metric:1
>          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
>          collisions:0 txqueuelen:1000
>          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
>          Base address:0xdcc0 Memory:fe4e0000-fe500000
>
> lo        Link encap:Local Loopback
>          inet addr:127.0.0.1  Mask:255.0.0.0
>          inet6 addr: ::1/128 Scope:Host
>          UP LOOPBACK RUNNING  MTU:16436  Metric:1
>          RX packets:470115 errors:0 dropped:0 overruns:0 frame:0
>          TX packets:470115 errors:0 dropped:0 overruns:0 carrier:0
>          collisions:0 txqueuelen:0
>          RX bytes:48204556 (45.9 MiB)  TX bytes:48204556 (45.9 MiB)
>
> sit0      Link encap:IPv6-in-IPv4
>          NOARP  MTU:1480  Metric:1
>          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
>          collisions:0 txqueuelen:0
>          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
>
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--
Stan Horwitz
Temple University
Enterprise Systems Group
stan AT temple DOT edu

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