I just updated my Foreman server and reboot, then this happened when I accessed the web console: Service unavailable ERF64-6496 [Foreman::MaintenanceException]: There are migrations pending in the system. This was the first time I’ve seen this message, and possibly because I haven’t done the update frequently enough. Fortunately, according to this blog post, it should be relatively easy to fix. [root@foreman ~]# sudo foreman-rake db:migrate API controllers newer than Apipie cache! Run apipie:cache rake task to regenerate cache. == 20210525144427 EnforceUniqueTemplates: migrating =========================== -- add_index(:templates, [:type, :name], {:unique=>true}) -> 0.0232s == 20210525144427 EnforceUniqueTemplates: migrated (0.0341s) ================== == 20210610131920 RestrictSendmailLocation: migrating ========================= == 20210610131920 RestrictSendmailLocation: migrated (0.0016s) ================ [root@foreman ~]# sudo foreman-rake db:seed API controllers newer than Apipie cache! Run apipie:cache rake task to regenerate cache. User with login admin already exists, not seeding as admin. As suggested, I also ran apipie:cache rake task to generate cache. ...

If you use LVM frequently enough, especially when re-using existing disks, you might come a cross a problem when you’re unable to create a physical volume from that disk. For example, here is what I encountered today when I tried to create a physical volume on a device called /dev/sdb. [root@db3 ~]# pvcreate /dev/sdb Device /dev/sdb excluded by a filter. I’m sure I haven’t had any filters in /etc/lvm/lvm.conf. ...

As the title says, an easy way to find out the path of a program/command on Windows using PowerShell can be done with Get-Command cmdlet. For example, I want to find out where I had installed nvim (Neovim) on a rarely use Windows machine. To do this, I can execute the following command: ❯ Gt-Command nvim CommandType Name Version Source ----------- ---- ------- ------ Application nvim.exe 0.0.0.0 C:\Program Files\Neovim\bin\nvim.exe With PowerShell, we can also just print a specific attribute (?) of an object. ...

It’s been quite a while since I last posted something here. It’s not that I haven’t come across many issues in tech, it’s just that I haven’t had enough time to write anything. So I’m going to share how to easily clear the ZFS metadata on a disk previously used in a ZFS pool. Here is an example - I have an external drive, and it is detected as /dev/da0 when plugged into a FreeBSD server. Though I don’t remember having used it as a member of a ZFS pool called tank, the following output does show that it is the case: ...

What was your first text editor when you started using Linux/Unix? Mine was pico. It was very easy to get started with and quite similar to nano. Then I moved to emacs and sticked with it for a long while. Eventually, I’ve switched to vim (or neovim), and that’s what I have been using until now. Well, the thing about text editor or may be this also applies to many other things, you’re only familiar with features that you constantly use. This means I only know a small subsets of what vim can do. ...