When using physical machines, virtual snapshots are not an option
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Generate QR codes for Swish payments
Using the Swish API with php-curl running in Docker
This is how they do it ¯\_(ツ)_/¯
Whenever a hacker breaks in to a system, there are a few steps they take to keep the access without being caught red handed.
Web Monitor Script
Simple script for monitoring of a web service using curl
GlusterFS – a clustered filesystem
High availability requires shared storage of files
High availability with KeepAliveD
Redundant IP-Address assignment simply means that if one node goes down, another takes over the Virtual IP. This can be useful in many different scenarios like firewalling or reverse proxy.
MariaDB Galera Cluster
Running a cluster takes care of replication of data between several nodes. This example is running a three node cluster. Start by installing a base container with Debian 10 buster. Don’t forget to set fixed ip-addresses on your containers, i use dnsmasq to assign static leases based on hostname. Install MariaDB Configure the /etc/hosts file… Continue reading MariaDB Galera Cluster
Managing a slave server
A successful master slave setup requires an effective way for nodes to communicate
rsnapshot
Secure incremental backups over the network
Keeping your WordPress site healthy from the command line
a colorful guide to wordpress administration