Every time I go to create a new iocage jail, I cannot remember out the command. Here we go, for next time: iocage create -n devgit-ingress01 –thickjail host_hostname=devgit-ingress01.int.unixathome.org ip4_addr=10.0.0.141 –release 12.1-RELEASE iocage create -n devgit-nginx01 –thickjail host_hostname=devgit-nginx01.int.unixathome.org ip4_addr=10.0.0.147 –release 12.1-RELEASE
Creating a new iocage jail Read More »
I am replacing one zroot with another because of missing binaries and suspect layout. The existing zroot is an old system predating current zroot layouts. This work is being performed on a test system (that link is not safe for young eyes). In this post: FreeBSD 12.1 mfsBSD 12.1 The failed attempt I tried once, and failed, with with old zroot_old and new zroot_new mounted. zroot_new became unusable and I started again. This
Renaming and replacing zroot filesystems using mfsBSD Read More »
Every time I go to burn a new image to a thumbdrive I have to remember how. This post aims to fix that so I can just look it up. Case in point: mfsBSD I have downloaded mfsbsd-12.1-RELEASE-amd64.img from https://mfsbsd.vx.sk/files/images/12/amd64/ From the same URL I’ve looked in mfsbsd-12.1-RELEASE-amd64.img.sums.txt and grabbed the md5 hash. I verified the downloaded file via: [dan@pro02:~/Downloads] $ md5 mfsbsd-12.1-RELEASE-amd64.img | grep a79046a330938d284167dac08cc0bfcb MD5 (mfsbsd-12.1-RELEASE-amd64.img) = a79046a330938d284167dac08cc0bfcb Yes, that matches.
Burning a disk image to a thumbdrive on OSX Read More »
I wrote this post late one night while pondering how to solve this problem. I may have solved it with much less effort. I want to copy a zroot from old drives to new drives. The new drives are in a test box of mine. Once the new drives are configured, I will replace the existing mirror with them. Not shown here, I have already installed FreeBSD 12.1 on the new drives. I
replacing an existing zroot with a proper zroot Read More »
Today I was updating some servers. One of them was rebooted three times. On the third time, one of the drives went missing. This is how I tracked down which drive, and which slot in the server, and fixed it. I’m writing it mostly so I can remember how to flash the light on the drive. There is also an off-by-one issue to avoid. In this post: FreeBSD 12.1 sesutil ZFS Supermicro 846
ZFS: adding a drive back into the zpool Read More »
I’m in the final stages of the FreshPorts packages project. One of the last tasks is clearing the packages cache from disk when new package information is loaded into the database. See also: Clearing the packages cache ZFS when you’re not doing ZFS Several of the configuration items have been learned from putting my poudriere instance into a jail. In this post: FreeBSD 12.1 py37-iocage-1.2_5 If I was to do this cache clearing
using zfs rollback for cache clearing Read More »
Last night the MySQL server instance in my dbclone jail stopped working. This is the jail into which copies of all my databases eventually go for test restores and backups. This morning I tried started it: [dan@dbclone:~] $ sudo service mysql-server start /usr/local/etc/rc.d/mysql-server: WARNING: failed precmd routine for mysql My initial search suggested removing /var/db/mysql (this will lose all your data). Since this was a testing server, I tried it. No success. I
WARNING: failed precmd routine for mysql Read More »
This is just a placeholder for me to find this later. I was cleaning up some old snapshots. I’m not sure I should have removed those snapshots and I’m saving this here for next time I use bectl. [dan@slocum:~] $ grep -v autosnap ~/tmp/snapshots/snapshots zroot/bootenv/default@2020-01-11-18:16:51 zroot/bootenv/default/tmp@2020-01-11-18:16:51 zroot/bootenv/default/usr@2020-01-11-18:16:51 zroot/bootenv/default/usr/local@2020-01-11-18:16:51 zroot/bootenv/default/usr/obj@2020-01-11-18:16:51 zroot/bootenv/default/usr/src@2020-01-11-18:16:51 zroot/bootenv/default/var@2020-01-11-18:16:51 zroot/bootenv/default/var/audit@2020-01-11-18:16:51 zroot/bootenv/default/var/empty@2020-01-11-18:16:51 zroot/bootenv/default/var/log@2020-01-11-18:16:51 zroot/bootenv/default/var/tmp@2020-01-11-18:16:51 [dan@slocum:~] $ sudo zfs destroy zroot/bootenv/default/var/tmp@2020-01-11-18:16:51 [dan@slocum:~] $ sudo zfs destroy zroot/bootenv/default/var/log@2020-01-11-18:16:51 [dan@slocum:~] $ sudo zfs destroy zroot/bootenv/default/var/empty@2020-01-11-18:16:51
I backup my databases daily. They get dumped to a disk file and copied somewhere else. Then they are backed up into a file system. Once a month they get copied to tape. Yesterday I upgraded a PostgreSQL database server, and it went well. Overnight, a backup failed. This is the story of how that led to me discovering my backups have been at risk for nearly 100 days. The error This morning
The backups have been wrong for about 97 days Read More »
Be warned, this failed. I’m stalled and I have not completed this. I’m going to do jails within a jail. I already do that with poudriere in a jail but here I want to test an older version of iocage before upgrading my current jail hosts to a newer version. In this post: FreeBSD 12.1 py36-iocage-1.2_3 py36-iocage-1.2_4 This post includes my errors and mistakes. Perhaps you should proceed carefully and read it all
Creating a ZFS dataset for testing iocage within a jail Read More »