Tag Archives: linux

iptables quick isolation

The fol­low­ing ipt­a­bles for quick iso­la­tion of port 8080 on eth1. eth0 is open for all. # ipt­a­bles -A INPUT -s 127.0.0.1 -j ACCEPT # ipt­a­bles -A INPUT -i eth0 -j ACCEPT # ipt­a­bles -A INPUT -i eth1 -p tcp … Con­tin­ue read­ing

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Notes on OCFS2

Cen­tOS 6.5, uname -r => 2.6.39–400.211.3.el6uek.x86_64, ocf­s2-tools ver­sion 1.8.0–10.el6 Impor­tant Glob­al heart­beat works with ocfs2-tools-1.8.0–11 and lat­er. A nice post about glob­al heart­beat https://blogs.oracle.com/wim/entry/ocfs2_global_heartbeat. An ora­cle arti­cle http://docs.oracle.com/cd/E37670_01/E37355/html/ol_instcfg_ocfs2.html. Notice the use of more than 3 shared devices in order to prop­er … Con­tin­ue read­ing

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Preparing Linux Template VMs

Test­ed on Cen­tOS. The orig­i­nal arti­cle is Prepar­ing Lin­ux Tem­plate VMs, please read that first! This arti­cle is for preser­va­tion and my own per­son­al use. Step 1: Clean out yum and apt caches. /usr/bin/yum clean all apt-get clean Step 2: … Con­tin­ue read­ing

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