Graphing on-demand Linux system performance parameters

Current servers are way more powerful than we could have imagined before. With quad-core CPUs, even the simple dual-socket servers contain lots of horse-power. Remember our attitude towards CPU power five years ago, and see that we’re way beyond our needs. When modern servers are equipped with at least eight cores, other, non-CPU related issues…

Vlan Tagging with bonding network interface on RHEL4

This is not a simple task, as there are few things which should actually happen for it to work. First – the switch port should support vlan tagging (of course, right?) I have used vlan2 for “external” network, and vlan3 for “internal” network. My configuration looks like this: ifcfg-eth0: DEVICE=eth0 BOOTPROTO=none ONBOOT=yes MASTER=bond0 SLAVE=yes ISALIAS=no…