SurlyJake » Debian Etch

Debian eth0, eth1, eth2, in Virtualbox or VMware Virtual machines when copying

jacob — Fri, 13 Nov 2009 19:44:17 +0000

Debian uses udev. Udev handles mapping MAC’s to the appropriate /dev/eth(X) file. If you copy a Virtual machine, Udev will remember the MAC address of the old NIC. When you copy the machine, the virtual host usually generates a new MAC address for the VM.
Udev will assign the new Device to eth1, eth2, and so on. If you want to change your NIC assignments make Udev forget the old MAC.
In Debian 5 (lenny) it is in this file:

/etc/udev/rules.d/70-persistent-net.rules

In Debian 4 (etch) it is in this file:

/etc/udev/rules.d/z25_persistent-net.rules

To apply changes in Lenny: “udevadm trigger” or “udevtrigger” (in Etch)

Debian Samba share. no password. read only

jacob — Wed, 08 Oct 2008 18:28:24 +0000

Just install samba server:

apt-get install samba

edit the config:

nano /etc/samba/smb.conf

set security to “share”

security = share

and guest account to nobody

guest account = nobody

then you just need to create your share like this:

[guest share]
comment = a guest share
path = /path/to/files
browseable = yes
read only = yes
guest ok = yes

MySQL table storage engine (switching from MyIsam to InnoDB)

jacob — Fri, 03 Oct 2008 04:14:56 +0000

I know I did this the hard way. there is a command that you can issue that will convert them on the fly. what I did was mysqldump the database, reinstall mysql(because of other reasons), and then edit the dump so that the line that specified the engine reads “ENGINE=INNODB” instead of “ENGINE=MyISAM”.Then I imported the dump.

I was getting annoyed that when listing my tables in phpmyadmin, it would show the list of tables in InnoDB (which is what i wanted), but then, when showing the summary at the bottom of the page, said “MyIsam”. I easily got rid of it by adding “default-storage-engine=InnoDB” to my “my.cnf” file.

MySQL server –purge and reinstall

jacob — Fri, 03 Oct 2008 04:06:03 +0000

Screwed around for a bit. messed up MySQL. I decided to remove –purge, and start fresh. Unfortunately, the reinstall wouldn’t work. Long story short, i had to remove “mysql-server, mysql-server-5.0, and mysql-common”. when i ran this, it also pulled out other dependencies, but i just reinstalled them all. voila! worky.

apt gives a “Segmentation faulty tree”

jacob — Thu, 02 Oct 2008 01:59:08 +0000

when running an update:
sudo aptitude Ouch! Got SIGSEGV, dying..
apparently, just remove some files:
sudo rm /var/cache/apt/*.bin
now everything is back to normal.

Zabbix 1.6 Proxy with Debian

jacob — Wed, 01 Oct 2008 19:10:21 +0000

I set up a Zabbix Proxy today on a little VM. looks to work nicely. Intructions will be kept up to date on this page.

Staying on time in Debian

jacob — Tue, 30 Sep 2008 17:41:54 +0000

To stay on time, you should really use ntpd. It is a daemon that runs all the time and makes tiny changes to the system clock. All you need to do is install ntp:

aptitude install ntp

after it’s installed, I encourage you to go over to http://www.pool.ntp.org/zone/@ and pick a pool in your continental zone. Debian has some defaults, and they are fine, i just like using the ntp pool. If you want to change where you are syncing to, open up /etc/ntp.conf and change the “server” lines.

nano /etc/ntp.conf

to manually sync Debian’s time, just install “ntpdate”

apt-get install ntpdate

run this:

ntupdate-debian [a ntp server]

Uninstall MySQL 5 from Debian

jacob — Sat, 27 Sep 2008 14:12:32 +0000

I completely. completely messed up MySQL. Badly. I wiped out the data directory (/var/lib/mysql in Debian) and the went to remove mysql …
apt-get remove --purge mysql-server
That only deleted something like 86K. dissapointing. It looks like “mysql-server” is a shortcut pointing to the latest version of the software. The real software is found under the name “mysql-server-50″. So what made it happen was:
apt-get remove --purge mysql-server*
That’ll wipe out whatever mysql install is in place.

Debian 4.0r4 NIC bonding

jacob — Wed, 17 Sep 2008 18:26:21 +0000

Install package ifenslave-2.6.

apt-get install ifenslave

make sure the real NICs kernel modules are loaded automatically

modprobe --list | grep -i bonding

edit /etc/network/interfaces to look like this:

auto bond0
iface bond0 inet static
address 192.168.1.59
netmask 255.255.255.0
gateway 192.168.1.1
up /sbin/ifenslave bond0 eth0 eth1
down /sbin/ifenslave -d bond0 eth0 eth1
broadcast 192.168.1.255

make sure to remove ALL of the lines refering to old eth0 or eth1 settings.

add the following lines to your /etc/modprobe.d/arch/i386:

alias bond0 bonding
options bonding mode=1 miimon=100 downdelay=200 updelay=200