28 Feb 09 Local and Remote Kernel Upgrades – Failsafe Grub

Grub (and LILO too for that matter) has a useful ‘failsafe’ feature that can be configured. This proves especially useful for remote kernel upgrades, where a failed boot will render your machine offline and unavailable.

Here is my standard grub config. I have just added my new 2.6.28 kernel.
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Tags: 2.6.18, 2.6.28, boot, color, debian, default, failsafe, grub, initrd, kernel, kernel panic, kernel upgrade, network interface, panic, reboot, root, title, uname

05 Oct 08 APNIC Box – Linux on a Mikrotik 532a, Part 3 – Installing Debian, Prebuilt Disk Image

Follow on from 01 Oct 08 APNIC Box – Linux on a Mikrotik 532a, Part 2

The device runs a 2.4.30 kernel on a debian woody (mipsel) environment. If anyone can contribute anything for 2.6.x and debian etch, that would be great.

In this part, I’m going to provide a download link to a prebuilt image which you can write directly onto your own CF card with dd or similar tool. I’m also going to provide a step by step to installing debian yourself without my prebuilt disk image.

Prebuilt image is here:

The prebuilt image also contains a number of scripts and tools that I’ll comment on and come to in later parts.

Now installation instructions:
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Tags: 532a, apnicbox, apt-get, atftpd, CF, compile, cross compile, Custom Kernel, dd, debian, dhcpd, dhcpd.conf installer, forward, initrd, initrd.gz, iptables, ip_forward, kernel, Linux, linuxrc, masquerade, mikrotik, mipsel, mkfs, mknod, mount, partition, prebuild image, routerboard, routerboard 532a, scripts, sed, tftpd, vmlinux, wget