New -s option for zpool status

With SRU 30 of Solaris 11.4, the zpool command got a new option for the status command. You can now get some additional information about the devices. This blog entry...

ZFS allocation units

This feature introduced in Solaris 11 SRU 30 is really an interesting one. It’s nothing you should really need often because usually ZFS will do the right thing when it...

You have been warned: Upgrading rpool

In the past customers painted themself into a corner, when they did a rather large jump with their OS versions, upgraded their app as well, upgraded the zpool afterwards to...

Solaris scales

This is a nifty small feature . Tools like ps,df,du, ls,ps,size,prstat and swap have now the option --scale. This makes the output of those tools much more readable. Let’s assume...

Free the spare pönökels of the world - now!

I’m getting a new bike soon. Of course you want to use a number of old components as well. A bike is pretty expensive right now as everyone prepares to...

Limits revisited

There were more limits changed in regard of open files has been changed with as well. The change took place in SRU27. rlim_fd_cur has been increased from 256 pre-SRU27 to...

Small changes : New open files default.

In a relatively recent Solaris 11.4 SRU a limit was increased in it’s default setting. In 11.4 (no SRU) the limit of of open file for a user was 256....

The long arm of binary compatibility

I got some questions, asking why this performance optimization i wrote of in regard of vHBA isn’t the default. Good question. I would like to answer this in a more...

Socially distanced voices of reason

Went through two milestones this weekend. Did my 4000th kilometer this yeat on my bike today. Was a week with three 100km-rides, this accelerated things a little bit. I moved...

Solaris 11.4 and user_reserve_hint_pct

A long time ago, i wrote about the /etc/system-parameter user_reserve_hint_pct. It limits the size of the ZFS ARC cache by proxy by essentially limiting the amount of the memory the...

Homebridge and Tasmota at my cellar

And Darmok and jalad at Tanagra. As i integrated them into Homekit via Homebridge, i had the problem with the Delock sockets with their custom firmware that i couldn’t switch...

vHBA and AIO

In Oracle Solaris 11.4 SRU30 there was an important change with LDOMS you should be aware of as you probably have to do an administrative step to get best performance....

Piped sandboxes

I got one question via Twitter: “What if there were a convenient way to run typical Unix commands in a sandbox? E.g. grep, awk, sed, etc. Could they work as...

Monitoring the sky - dump1090 to InfluxDB

You may know that i’m very interested in aviation, despite the fact that i had a quite severe case of “being totally afraid of flying” in the past. Or perhaps...

Nested netgroups for fun and profit

Imagine you have several hundred systems to manage. The systems are for separate projects and each project has different teams of admins and only assigned admins should be able to...

Setting up LDAP for Solaris 11

Some time ago i was asked to provide a walktrough for the configuration of LDAP in Solaris 11. It’s a walkthrough how to set up LDAP name services for Solaris...

Telegrafing data to MQTT

On Friday i wrote an article describing how i configured Telegraf to gather monitoring data from my Technische Alternative CMI. In this article i wrote that this substituted a python...

Out of ID

Recently a customer observed on one of their systems, that the number n of databases started quite nicely on a system. However when they tried to start database n+1 on...

Virtualbox via IPS .p5p

Darren Moffat just pointed to this in his Twitter feed about an package for Solaris that would make installation of this great tool really comfortable. VirtualBox now being packaged in...

Using the Technische Alternative CMI with Telegraf

My heating system is controlled by an UVR1611 from Technische Alternative as i have to control a wood pellets heater and solar thermal collectors on the roof in a rather...