ClearLinux is made by Intel. Here I’ll try to install the server version on qemu-kvm.
CoreOS – the container Linux
CoreOS is a lightweight OS with docker. Here is how to install it on qemu-kvm, aka Virtual Machine Manager.
Upgrade to php-7.3
That caused my WordPress plugin Crayon Syntax Highlighter to fail. Some googling suggests php-7.3 switched to pcre2, which is more restrictive in terms of escaping special characters.
Memory upgrade…
I have been using these on my desktop happily for several months. Out of stupidity, I decided to fill up all 4 memory slots only because 2 of them were unoccupied. And then trouble came.
Run RHEL8 on docker with Red Hat UBI image
Red Hat is offering a few official docker images for RHEL8. One can now use or build images based on the latest operating system from Red Hat. Here is how to do it in 3 simple steps
RHEL8 and Ansible
Red Hat EL8 is available now since May 7th. It’s not particularly exciting IMO. Many “new” features have been available on other distros quite a while ago. Here, I want to evaluate how easy it is to adopt my existing ansible playbooks on this new version of Red Hat.
Rsync backup with BTRFS
There are plenty of backup tools in the community but I still prefer rsync for desktop backup. It only copies the changes and it does not require any catalog. I’ve been using that for years, rsync-ing my files to a USB drive. While it works fine and it saved my day a couple times, my script only keeps 1 version of backup. It’d be nice if I can have at…
UID > INT_MAX
From thehackernews, it was said when the UID is larger than INT_MAX, which is 2147483647, privilege validation is improperly handled and that gives the user right to run systemctl commands as if he/she is a privileged user. What is my INT_MAX? Though it’s hard to imagine who would use such an UID when they usually starts with 1000. However, if Linux is integrated with AD, the AD users ID are mapped…
AMD EPYC on cloud
The new AMD-based instance types are made available in Nov 2018. It’s damn impressive. Here is a quick benchmark using openssl. The first is from EPYC, second from ARM, third from Intel.
Cool feature on Azure – Run Command Script
I don’t think I’ve ever said anything good about Azure, but I’ve finally ran into one today. Someone screwed up sshd_config and the service would not start anymore. With the run script tool, I was able to revert the config to the original version and restart the service. Fortunately, the changes were checked into RCS, which made recovery relatively easy. Here, I checked out the original version of the config…