https://mossyoak.linuxwall.info/ 2026-04-13T22:23:12+00:00 https://mossyoak.linuxwall.info/ https://mossyoak.linuxwall.info/lib/tpl/dokuwiki/images/favicon.ico text/html 2024-04-17T10:19:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://mossyoak.linuxwall.info/doku.php?id=en:ressources:articles:benchmark_ebs&rev=1713363598&do=diff Benchmarking EBS volumes in EC2 I ran the following benchmark in mid-2010 when evaluating Oracle database storage in EC2. We never made the move to EC2, in parts because of the bad IOs provided by EBS volumes, even when aggregated in software raid. The result spreadsheet is available here: text/html 2024-07-19T11:32:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://mossyoak.linuxwall.info/doku.php?id=en:ressources:articles:coredns&rev=1721403153&do=diff CoreDNS server inside a Docker container This howto describes how to run CoreDNS in a Docker container. It assumes a running docker setup. Fetch the container CoreDNS maintains a docker container at <https://hub.docker.com/r/coredns/coredns/>. # docker pull coredns/coredns Using default tag: latest latest: Pulling from coredns/coredns Digest: sha256:1eeb4c7316bacb1d4c8ead65571cd92dd21e27359f0d4917f1a5822a73b75db1 Status: Image is up to date for coredns/coredns:latest docker.io/coredns/core… text/html 2024-04-17T10:19:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://mossyoak.linuxwall.info/doku.php?id=en:ressources:articles:diy_dyn_dns&rev=1713363598&do=diff Do It Yourself Dyn Dns Dyndns does not propose its free service anymore. This is sad, because my verizon fios connection has a bad tendency to change its IP more often that I'd like. So I scripted a couple of cron jobs and worked around the problem with an automated root dns update. text/html 2024-04-17T10:19:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://mossyoak.linuxwall.info/doku.php?id=en:ressources:articles:ejabberd&rev=1713363598&do=diff Local Jabber/XMPP server with ejabberd and Debian Jabber, the XMPP instant messenging protocol, is now the standard for IM communications. Slowly kicking out monstrosities from the 90's (msn, aol and such). The enormous advantage of Jabber is its decentralized architecture. Thus, you can setup you own server at home, with your own domain name, and communicate with any other xmpp user over the world (jabber.org, gtalk, text/html 2024-04-17T10:19:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://mossyoak.linuxwall.info/doku.php?id=en:ressources:articles:kvm_qemu&rev=1713363598&do=diff KVM/Qemu recipes I'm just copying and pasting stuffs I want to keep around. Maybe sometime I will write an article on this. sources: * <http://fedoraproject.org/wiki/Virtualization_Quick_Start> * <http://www.howtoforge.com/virtualization-with-kvm-on-a-debian-squeeze-server> - Do a snapshot of a VM $ virsh -c qemu:///system Welcome to virsh, the virtualization interactive terminal. Type: 'help' for help with commands 'quit' to quit virsh # list Id Name State -… text/html 2024-04-17T10:19:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://mossyoak.linuxwall.info/doku.php?id=en:ressources:articles:netfilter_advance&rev=1713363598&do=diff Netfilter/Iptables script, with traffic control (QoS) The script below is used on production systems to enable Firewalling with Netfilter/Iptables and QOS with Traffic Control. More detailled information about Netfilter and TC can be found in other articles on this wiki. text/html 2024-04-17T10:19:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://mossyoak.linuxwall.info/doku.php?id=en:ressources:articles:perl_selective_chmod&rev=1713363598&do=diff Selective CHMOD in Perl with pattern matching Simple problems can become quite tricky to solve. Recently, I had to give FTP access to a large folder in which I had some private information. I did not want to reorganize the folder just because of this access, and I was already using group permission that I couldn't change. text/html 2024-04-17T10:19:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://mossyoak.linuxwall.info/doku.php?id=en:ressources:articles:script_chroot_nginx&rev=1713363598&do=diff Isolated Nginx & PHP installation script This script install a chrooted nginx and php environment on a specific folder of the system. Is has been developped and tested on Debian Squeeze 64 bits. It requires that the nginx, php5-cgi, spawn-fcgi packages are installed. In addition, if you want mysql support, install php5-mysql before launching the script. text/html 2024-04-17T10:19:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://mossyoak.linuxwall.info/doku.php?id=en:ressources:articles:sudo_rtorrent&rev=1713363598&do=diff Sudo rtorrent for netfilter match I use rtorrent as a torrent downloader. The application runs on a server in a screen virtual tty. My only problem with this great tools is that it's difficult to identify the flows created by the torrent protocol to match them with netfilter/iptables. I then choose to launch rtorrent under its own user, using text/html 2024-04-17T10:19:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://mossyoak.linuxwall.info/doku.php?id=en:ressources:articles:unbound_dnssec&rev=1713363598&do=diff Activate DNSSEC check with Unbound Unbound is an excellent DNS resolver that can very quickly act as a resolver for you entire network. This is actually pretty straightforward on Debian: # aptitude install unbound And then edit the configuration file