The wp-cron.php script for WordPress handles various scheduled events (such as checking for updates, publishing scheduled posts and more). By default this will be executed at each page load (to check if anything needs to be done). A common recommendation is to disable this and instead run it as a cron job. We deal with […]
Read more >At the time of writing, the Linode Longview agent is not working with MariaDB 10.5 onwards. This happens because there is a hard coded binary name in the Perl script responsible for determining if MySQL monitoring is required; from MariaDB 10.5 the binary name has changed from mysqld to mariadbd. To fix this the Perl […]
Read more >These are the steps I use to get a dump of all password hashes from a domain controller and then crack the hashes with hashcat or john. Excluding the dumping of password hashes, these steps are all executed on a Linux host. If you are trying to do this completely from Windows you will need […]
Read more >When working with lists of IP’s with Puppet there are some common tasks that you will most likely encounter: Aggregate IP’s – As an example, if you have a firewall rule and the source list is like this: That list can be condensed into a single rule for only 192.0.2.0/24. You may also be working […]
Read more >For convenience I like to name the interfaces for my desktop/laptop in an easy to remember convention so that I don’t need to think about what the interface names are at all when running things like tcpdump. The best way I have found to do this is with udev rules. The original interface names will […]
Read more >The KDE Plasma Thermal Monitor widget has an annoying issue where the temperature sources will sometimes show as “Off” after rebooting. This seems to have broken around Ubuntu Groovy for me. This is a well known issue as referenced on the KDE forum among other places. To fix, I edited ~/.local/share/plasma/plasmoids/org.kde.thermalMonitor/contents/ui/main.qml. This line needed to […]
Read more >To debug some issues with DNS (specifically EDNS related issues) I thought I would use Scapy so that I could craft the packets the exact way I wanted. As the issue was only occurring for some queries but not others due to the queries being sent to different front end servers I had to run […]
Read more >The Juniper vSRX uses nested virtualization to run. The host OS is Wind River Linux, assuming you are running this on ESXi you can see the host OS if you push Alt + F2 to access a separate terminal. For troubleshooting or if you are interested in further information about how the vSRX runs you […]
Read more >NOTE: I originally published this page in 2018; instructions may now be out of date. While looking at the Juniper vMX documents recently, I noticed that support has now been added for Ubuntu 16.04 with kernel 4.4.0-62-generic (see Table 2). Since I personally prefer using Debian over RHEL systems, I thought I would give this […]
Read more >NOTE: I originally published this page in 2018; instructions may now be out of date. Juniper has provided an updated copy of the i40e module to resolve the “PF reset” issues that occur on vMX routers when using SR-IOV. The new driver release is version 2.4.101. IMPORTANT: At the time of writing you cannot use […]
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