assigning multiple ip addresses to NIC on bootupm, how?

Jeff Vian jvian10 at charter.net
Mon Jul 11 15:36:37 UTC 2005


On Mon, 2005-07-11 at 09:08 +0100, Chris Lowth wrote:
> 
> Jeff Vian wrote:
> 
> >>Or simply add the commands to /etc/rc.local
> >>    
> >>
> >
> >That will not work for his needs.  rc.local is the last script run and
> >he needs the interfaces active before httpd starts. 
> >
> >  
> >
> Yes: it will work - it's exactly what I do on my servers.
> 
> And .. No, he doesnt need the logical interfaces active before httpd runs
> 
> Given that the OP currently works by running the commands in an 
> interactive shell after bootup and makes no comment about having to 
> restart Apache, this suggests that he is not using IP addresses in his 
> "Listen" options in httpd.conf - which means that Apache is listening on 

He said (and I quote since you have stripped it from your reply) ----

	How can I get these commands to run on boot up automatically
	without me having run them manually. My httpd service fails to
	start on boot up because it requires these addresses to already
	be available on the NIC, but my setup initially only bring
	eth0:1 up on 192.168.1.2."

Thus, his question was how to get it to start at boot time.
Your solution, while it works, does not meet his needs.

> IP 0.0.0.0 ("all") which in turn means that adding IPs to interfaces 
> after the event will indeed work just fine. The "interfaces must be 
> active" point is only an issue if Apache is bound to specific IPs via 
> the "Listen" statement - and it appears that this is not the case for 
> the OP.
> 
> It's easy to check.. if "netstat -nta" shows no specific IP address 
> against the "LISTEN" entry for port 80, then the rc.local route will 
> work fine - whether it's "best practice" is another matter.
> 
> Here's the trace of an actual test...
> 
> [root at tregonwell root]# ifconfig
> eth0      Link encap:Ethernet  HWaddr << CUT >>
>           inet addr:192.168.0.14  Bcast:192.168.0.255  Mask:255.255.255.0
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:148 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:180 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000
>           RX bytes:14384 (14.0 Kb)  TX bytes:46289 (45.2 Kb)
>           Interrupt:3
> 
> 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:10 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:10 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:700 (700.0 b)  TX bytes:700 (700.0 b)
> 
> [root at tregonwell root]# netstat -nta | grep :80 | grep LISTEN
> tcp        0      0 0.0.0.0:8080            0.0.0.0:*               LISTEN
> tcp        0      0 :::80                   :::*                    LISTEN
> [root at tregonwell root]# ifconfig eth0:1 192.168.0.140
> [root at tregonwell root]# telnet 192.168.0.140 80
> Trying 192.168.0.140...
> Connected to 192.168.0.140.
> Escape character is '^]'.
> GET /XXXXXX HTTP/1.0
> 
> HTTP/1.1 404 Not Found
> 
> ------ cut -----
> 
> Chris
> 
> --
> http://www.lowth.com/rope - iptables match module scripting
>    language for controlling P2P and other high-level protocols.
> 




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