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

2008-03-28 15:01:58
Subject: Re: [Networker] Problem backing up a server with multiple IP addresses
From: Stan Horwitz <stan AT TEMPLE DOT EDU>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Date: Fri, 28 Mar 2008 14:57:33 -0400
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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