Ceph – short list of Do’s and Don’ts

Brief list of recomandations extracted from Ceph official site: Run OSD data and OSD journals on separate drives Do not run multiple OSDs on a single disk Do not run OSD and a monitor or a metadata server on a single disk Metadata servers and monitors should have plenty of RAM (1GB of RAM per […]

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Modsecurity compilation fails on Amazon LightSail VPS

Hello, Trying to install nginx with modsecurity module on an Amazon LightSail VPS has encountered the error: “g++: internal compiler error: Killed (program cc1plus)” The main issue is that VPS has only 512MB RAM which seems not to be enough for compilation process. As surely the upgrade to 1GB RAM could help, there is also an […]

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How to see current entries within NAT table

In situations when it is required to identify which device from your local network is generating a specific data flow, it is possible to check the temporary conntrack-storage of netfilter: /proc/net/ip_conntrack file. This is applicable for most of the Linux based systems and in this particular case the output is from an Debian Wheezy system. […]

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See available updates for Ubuntu

root@server:/home/mihai# aptitude update root@server:/home/mihai# aptitude search ~U If you want to see which updates are available for your Ubuntu box, you can use the following command:  

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