Your MacBook (MacBook, Air or Pro) battery is dead after only one, two or three days of hibernation? Well, it shouldn’t happen but if it does there is a solution. Change hibernatemode to 25. What […]
net-snmp Logrotate On CentOS
It turns out be defult net-snmp doesn’t come with logrotate for CentOS 7. However is quite simple to be done. All you have to do create a the following file: /etc/logrotate.d/snmpdlog and add the content […]
A Magic Trick From ZFS
This is a short description about how to recover a single or multiple files from a ZFS snapshot on FreeBSD. The same trick might work on Linux, I haven’t tried, if you did please let […]
OS-X Slice Up Zip’s
Did you know you can send big attachments with Apple Mail if you use your Apple provided email (@icloud.com, @me.com) address? All you have to do is simply attach the file to your email and […]
How’s YOUR server doin’?
If you are using FreeBSD then you must be familiar with daily run output or daily security run output messages. They can be found in the root user’s mailbox by simply typing mail as root. If you’re […]
The Power Of CTRL+T
Did you know that you can check what a process is doing by pressing CTRL+T? Has it happened to you before that you were waiting for something to be finished that can take a lot […]
% 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 […]