Assume you have a service (web, mail, lb etc.) and you want to watch the logs of this service with fail2ban and take actions if specific log patterns occur. If your service is busy and have a high log volume/high log traffic, fail2ban can quickly eats up much cpu while trying to match regular expressions […]
haproxy
HAProxy High Availability using RHI, Quagga and OSPF
Usually, you can use VRRP + keepalived for making HAProxy redundant and providing a good service availability. In day-to-day operations, there are many cases where you have to take down a whole HAProxy host. For example, server reboots (because of kernel/os updates), hardware maintenance, new version of os distribution or installing/upgrading new HAProxy versions. For […]