Failure with freebsd-update; how not to upgrade your systems

2 Comments / FreeBSD, freebsd-update / By /

freebsd-update is a great tool. It reduces my workload. It’s hard to use it wrong, but I have managed to do so. So have other people. Yesterday, three of us encountered the same issue. We did it wrong. We didn’t do it wrong yesterday. We did it wrong months ago, and now it’s come back to haunt us. NOTE if you ever see: Undefined symbol “ssh_explicit_bzero” on a FreeBSD server, you probably have […]

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nullfs mounts in a jail

Leave a Comment / ezjail, File Systems, FreeBSD, Jails / By /

Just a note for myself. I had this kind of thing in /etc/fstab so I could share one installation of plugins and themes for WordPress. /usr/local/wordress/plugins /usr/jails/freebsddiary.org/usr/local/www/wordpress/plugins nullfs ro,nosuid,noexec,late 0 0 /usr/local/wordress/themes /usr/jails/freebsddiary.org/usr/local/www/wordpress/themes nullfs ro,nosuid,noexec,late 0 0 /usr/local/wordress/plugins /usr/jails/news.freshports.org/usr/local/www/wordpress/plugins nullfs ro,nosuid,noexec,late 0 0 /usr/local/wordress/themes /usr/jails/news.freshports.org/usr/local/www/wordpress/themes nullfs ro,nosuid,noexec,late 0 0 Then I moved them to their respective ezjail /etc/fstab.new_freshports_org files. They didn’t mount. Solution: remove ,late

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APC PDU AP7900 – resetting the password

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I have three APC PDU AP7900 and I’m about to dispose of one of them. I like to wipe the configuration from equipment prior to disposal. I could not recall the login details for any of my three PDUs. Fortunately, I still had the serial cable required to get into the console. I also had my serial cable for my laptop. Getting hold of one of these cables is important if you are

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Testing email delivery

Leave a Comment / Mail, Nagios / By /

The solution Here is the solution. You can stop reading now: ./check_email_delivery –smtp-server smtp.example.org –mailto dan@example.org \ –mailfrom dan@example.org \ –body ‘test, please ignore’ –imapssl \ –imap-server imap.example.org –username deltest –password secret That will test both delivery and receipt. There. Be gone. You don’t need the rest of this article. Thanks. Background As pointed out, this isn’t testing for an email loop. This is testing delivery. I took the term from the phrase

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temporary failure. Command output: maildrop: signal 0x19

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This is not the first time this has happened. It last happened about a month ago. Tonight it happened for a different reason. This time it wasn’t the size of the mbox (I’m not using mbox on this server). This time it’s the size of the log. $ ls -lha ~/.mailfilter.log* -rw-r–r– 1 dan dan 52k Jan 11 00:18 /usr/home/dan/.mailfilter.log -rw——- 1 dan dan 48M Jan 10 21:03 /usr/home/dan/.mailfilter.log.1 Once I mv‘d the

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Bacula on FreeBSD with ZFS

Leave a Comment / Advocacy, Backups, Bacula, FreeBSD, PostgreSQL, ZFS / By /

Full disclosure: I’m biased. I like the combination of PostgreSQL, FreeBSD, ZFS, and Bacula. In fact, I like it so much, I wrote the PostgreSQL backend for Bacula. Since then, I have been using Bacula for over 10 years. I have backed up to HDD, DDS, DLT, and SDLT. Bacula has proven to be reliable and it just works. Clients are available for a wide range of operating systems and Bacula doesn’t care

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Connecting a M/M VGA cable to a KVM switch using a gender changer

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This post is about removing the threaded ports from a gender-bender VGA adapter so you can use it with a connector which already has ports. The photos will make it clear what I’m referring to. I recently obtained a KVM switch. This will make sysadmin life at the console easier. Previously, if I needed to be on the console for a given machine, I had to connect the keyboard and monitor cables to

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You don’t have permission to access /pipermail/bsdcan-announce/ on this server – mailman

Leave a Comment / Mailman, Open Source / By /

I ran into this problem today and spent about 2 hours trying to figure out what went wrong. I composed an email to the Mailman mailing list and never sent it, because I solved the problem. Here is that email: Subject: Cannot view archives via website Hello, I think this is solved, but I’m posting anyway. I *think* the issue is one of permission: Apache, running as user www, cannot access the private

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reject_unknown_recipient_domain gives Recipient address rejected: Domain not found

Leave a Comment / Postfix / By /

If you’re using Postfix for submission and attempts to submit give this messages on the Postix server: Recipient address rejected: Domain not found you’re probably chroot’d. That is, your submssion entry in master.cf looks like this: submission inet n – – – – smtpd When it should look like this: submission inet n – n – – smtpd Penalty against http://wiki2.dovecot.org/HowTo/PostfixAndDovecotSASL which was my starting point. My thanks to rob0 and lunaphyte for

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