internetchannel.com
popd dying
http://www.internetchannel.com/info/popd.html
Trouble with popd dying. We had popd as inet service (naturally) and were having the problem that it would die for short periods of time. This would happen quite frequently throughout the day, particularly at lunch. The problem was that by default, inetd allows 40 instantiations of the program it's executing. If it sees more, it thinks the program is looping and kills the daemon for a period of time. We increased this to 100 with the following line in /etc/inetd.conf and solved the problem.
internetchannel.com
Optimizing Your Linux Kernel for Heavy Usage
http://www.internetchannel.com/info/kernel_optimizing.html
Optimizing Your Linux Kernel for Heavy Usage. This is something I found while searching for a solution to file table overflow. From: "Michael K. Johnson". Subject: Re: file table overflow X-Mailing-List:. Archive/latest/2216 Resent-Sender: rembrandt-list-request@redhat.com X-URL: http:/ www.redhat.com BearHeart / Bill Weinman writes: Occasionally I'm getting a message from Sendmail: Who are you? Here's a link off of the Apache web site. Http:/ www.qosina.com/ awm/apache/linux-tcp.html.
internetchannel.com
Connecting via PPP
http://www.internetchannel.com/info/ppp.html
Here are the details of how I get my connection with 1B channel. I've never been able to connect with 2B's and PAP. I have connected with 2B's with IP authentication, so I'm pretty sure it's not the hardware config on either end. In the logs I see that a " D" is being send instead of my username. If anyone has had any success with 2B's and PAP, or has a clue what's happening, please drop me a note. Mine's working with: pppd version 2.1 patch level 2 (Linux 1.0.1). Also, in the chat script, I have:.
internetchannel.com
Getting NFS to work on Linux
http://www.internetchannel.com/info/nfs.html
Getting NFS to work on Linux. Here's some information I posted on comp.os.linux.networking about getting nfs to work. For reasons I still don't understand, we had to make an entry in /etc/hosts.allow.
internetchannel.com
Minor Modifications to freeBSD Scripts
http://www.internetchannel.com/info/freeBSD_mods.html
Minor Modifications to freeBSD Scripts. We're pretty much a freeBSD shop, as we've just built a new shell machine freeBSD, as are any new machines we put together. We find its performance is outstanding and it's very maintainable. Occasionally, there's a script or 2 that doesn't have the behavior we would like based on it's function, so we're creating this list so you can see our changes and contemplate them for your systems. If you have any additional suggestions for us, let us know.
internetchannel.com
Swap Problem with Slackware 3.0 Install
http://www.internetchannel.com/info/linux_Slackware_install.html
Swap Problem with Slackware 3.0 Install. We installed Slackware 3.0 for use as a web machine. It ran smoothly for a couple of months, but after the server started to get stressed, we were getting the following errors:. Bin/sh: can't map '/lib/libc.so.5.0.9' /bin/sh: can't map '/lib/libc.so.5' /bin/sh: can't load library 'libc.so.5'. This indicated a memory problem - we were running out. We finally noticed that /proc/meminfo and top both reported no swap space was allocated! To fix, we did the following:.
internetchannel.com
DNS - "maintainance interval"
http://www.internetchannel.com/info/dns_problems/maintainance_interval.html
SOA retry value is less then maintainance interval. The following error was turning up in the logs from BIND (note the misspelling of "maintainance"). WARNING SOA retry value is less then maintainance interval (300. A search turned up this information:. What is the maintenance interval? This information was taken from http:/ www.hkn.de/Service/faq/faq dns.htm#BK1 and is reproduced here since the link is no longer valid.
internetchannel.com
wu-ftpd tips
http://www.internetchannel.com/info/net/wu-ftpd.html
Make sure you invoke wu-ftpd with the "-a" flag in /etc/inetd.conf so that your ftpaccess file gets read. Don't forget to HUP inetd after making the above change. Your tar and gzip binaries should be in ftpuser/bin and should be statically linked. This usually means you have to recompile with the -LSTATIC flag in the Makefile or the -static flag to gcc, and then copy the files to the ftpuser/bin directory. For more info, see O'Reilly's Managing Internet and Information Services.
internetchannel.com
Procmail error 213, Procmail error 13
http://www.internetchannel.com/info/procmail_213.html
Procmail error 213, Procmail error 13. I don't have any answers, but I found a solution. We were getting "mailer prog died with error 213" and "mailer prog died with signal 13" messages from sendmail. It always occurred with procmail, and happened pretty consistently with messages from certain domains. I made a run at looking at the headers to see if there was anything different from all the others that worked, but wasn't able to find anything. Sendmail just hung and mail.local died.
internetchannel.com
Creating a RAID-1 Disk on Linux
http://www.internetchannel.com/info/linux_md.html
Creating a RAID-1 Disk on Linux. Here's just a brief rundown for now. We'll fill in the details when we get a chance. Send us email. If you need details sooner. We used the md program that is part of the Slackware distribution to create a striped 8G disk from two 4G drives for our /var/spool/news/alt/binaries partition on the news machine. Note that there are certainly better hardware configurations; this was what we had to work with at the time. Mdcreate raid0 /dev/md0 /dev/sdc1 /dev/sdd1.
