% and crontab

Crontab is a wonderful tool to run tasks at scheduled times. I noticed that my cron jobs fail if I use the percentage sign (%) in it. Why? It works if I just execute the […]

Random vSphere Disconnection Issues

There is a setting in vSphere/ESXi called NFS.MaxQueueDepth. Starting ESXi 5.x the default value is 4294967295. However some storages are not happy with this and when traffic increases (I’m not sure how much traffic is too much) […]

vCenter “Unable to retrieve manifest or certificate file”

There is a bug in vCenter 6.5 which occasionally happens when you deploy an OVA from web. VMware is probably going to fix it, but until then when need to use a workaround. OVA file […]

zfs allow

By default many zfs operations needs elevated/root privileges. For example receiving a snapshot on a remote system. One does not want to open ssh to root user. With zfs allow permissions can be delegated to […]


Add label to a drive in FreeBSD sudo glabel label -v external_disk /dev/da0 Metadata value stored on /dev/da0. Done. glabel list Geom name: ada0p1 Providers: 1. Name: gpt/gptboot0 Mediasize: 524288 (512K) Sectorsize: 512 Stripesize: 0 […]

ZFS snapshot on FreeBSD – Part 2

In my previous post I presented how to do live backups of a running FreeBSD server with ZFS snapshot, today I’m doing the follow up: how to increment that snapshot. If you have a big […]

ZFS snapshot on FreeBSD

A very nice way to do a live backup of your server/work station is with ZFS snapshots, of course, if you use ZFS. You can send a snapshot to: a file, the local system, via […]

osxfuse error fix

During osxfuse installation from ports I stumbled into the following error: —> Building osxfuse Error: Failed to build osxfuse: command execution failed Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_fuse_osxfuse/osxfuse/main.log for details. Error: Follow https://guide.macports.org/#project.tickets to report a bug The […]

On deadline – ABC27 News – How Lyme disease affects your brain

You think Lyme is hard to catch and easy to get rid off? That’s a LIE! Actually is the other way around. Those tiny bastards are out there trying to make your life miserable, don’t […]

Mikrotik Script

Here is simple script which sends your IP address to your email, it will save you paying for a fix IP service from your ISP, unless you have a different case. :global ipadd; :global extinterface […]