Date: Mon, 26 Jun 1995 14:24:50 -0400 (EDT) From: Andrew White <awhite@dca.net> To: questions@FreeBSD.org Subject: Additions to FAQ Message-ID: <Pine.BSF.3.91.950626141031.22110A-100000@dca.net>
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I'd like to propose two additions to the FAQ:
1. kernel: mb_map full
I have had the above error message crash my machine several times.
After some help from bugs@freebsd.org, it turns out that the value
of NMBCLUSTERS was too low in src/sys/i386/include/param.h.
Upping the default value from 256/512 to 1024/2048 is suggested
for users running systems with heavy network I/O (many simultaneous
TCP connections). Of course, recompiling the kernel and rebooting
is necessary for this change to take effect.
2. Virtual Hosts via WWW
To enable the "virtual host" service of the Apache WWW server
(or other httpd servers that support virtual hosts -- I believe
there is a patch available for NCSA's server), the following should
be done:
ifconfig $ifn <ipaddr> alias
arp -s <ipaddr> <eth_hardw_addr> pub
Where <ipaddr> is an additional IP address corresponding to the
hostname of the "virtual host", $ifn refers to the name of
the network interface (eg, "ed0"), and <eth_hardw_addr> is the
ethernet hardware address of $ifn.
For example,
ifconfig ed0 204.183.80.24 alias
arp -s 204.183.80.24 0:0:c0:1:2:3 pub
adds a virtual host for www.condyn.com (204.183.80.24).
The ethernet hardware address can be found by looking at the output
of "arp -a". I added the above commands for each "virtual host"
to /etc/netstart, so that it takes effect after each reboot.
-Andrew
awhite@dca.net http://www.dca.net/ (work-related)
Andrew@White.org http://www.white.org/ (personal)
DCANET: The Delaware Common Access Network
Call (302) 654-1019 or send mail to info@dca.net for more information.
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