Create CentOS 6 DomU

wget https://raw.github.com/panticz/xen/master/domains/centos.6.sh -O - | bash -

#!/bin/bash

#
# IP    : dhcp
# user  : root
# pass  : t00r
#

#
# TODO
# use separate partitions for root (/dev/vg0/centos6-disk) and swap (/dev/vg0/centos6-swap) instead of harddisk image
#

# create disk
lvcreate --name centos6-disk --size 8G vg0

# download installation kernel and initrd
[ -d /tmp/centos6 ] || mkdir /tmp/centos6
wget -q http://mirror.netcologne.de/centos/6/os/x86_64/images/pxeboot/initrd.img -O /tmp/centos6/initrd.img
wget -q http://mirror.netcologne.de/centos/6/os/x86_64/images/pxeboot/vmlinuz -O /tmp/centos6/vmlinuz

# create installation configuration
cat <<EOF> /tmp/centos6-inst
kernel      = '/tmp/centos6/vmlinuz'
ramdisk     = '/tmp/centos6/initrd.img'
memory      = '512'
disk        = [ 'phy:/dev/vg0/centos6-disk,xvda,w' ]
name        = 'centos6-inst'
dhcp        = 'dhcp'
vif         = [ 'mac=00:00:00:00:ce:ce' ]
on_poweroff = 'destroy'
on_reboot   = 'destroy'
on_crash    = 'destroy'
extra       = "text ip=dhcp ks=http://preseed.panticz.de/preseed/centos6-minimal.cfg"
EOF

# install
xm create -c /tmp/centos6-inst

# create CenOS 6 configuration
cat <<EOF> /etc/xen/centos6
bootloader  = "/usr/lib/xen-4.1/bin/pygrub"
memory      = '512'
disk        = [ 'phy:/dev/vg0/centos6-disk,xvda,w' ]
name        = 'centos6'
dhcp        = 'dhcp'
vif         = [ 'mac=00:00:00:00:ce:ce' ]
on_poweroff = 'destroy'
on_reboot   = 'restart'
on_crash    = 'restart'
EOF

# OPTIONAL: add to autostart
ln -s /etc/xen/centos6 /etc/xen/auto/centos6

# start CenOS 6
xm create -c centos6

Links
http://www.centos.org/docs/5/html/Installation_Guide-en-US/s1-kickstart2-startinginstall.html

Create IPfire DomU (firewall)

Check for latest IPFire version
http://downloads.ipfire.org/

wget https://raw.github.com/panticz/xen/master/domains/ipfire.sh -O - | bash -

#!/bin/bash

#URL=http://downloads.ipfire.org/releases/ipfire-2.x/2.13-core73/ipfire-2.13.xen.i586-full-core73.tar.bz2

# get ipfire xen image
#wget ${URL} -P /tmp/

# extract
#tar xjf /tmp/ipfire-2.*.xen.i586-full-core*.tar.bz2 -C /tmp/

# new version
wget -q http://downloads.ipfire.org/releases/ipfire-2.x/2.13-core75/ipfire-2.13.xen.i586-downloader-core75.tar.bz2 -O - | tar -C /tmp -xjf -
bash /tmp/ipfire/xen-image-maker.sh

# fix kernel name and Xen 4.x console output 
mount /root/ipfire-boot.img /mnt/
sed -i 's|vmlinuz-3.2.48-ipfire-xen|vmlinuz-3.2.48-ipfire-pae|g' /mnt/grub/grub.conf
sed -i 's|xvc0|hvc0|g' /mnt/grub/grub.conf
umount /mnt

# fix Xen 4.x console output
mount /root/ipfire-root.img /mnt/
sed -i 's|xvc0|hvc0|g' /mnt/etc/inittab
sed -i 's|xvc0|hvc0|g' /mnt/etc/securetty
umount /mnt

# fix wrong nobody user id
mount /root/ipfire-var.img /mnt/
find /mnt/ipfire/ -user 65534 -exec chown 99:99 {} \;
umount /mnt/

# copy data to lv
mkdir -p /tmp/ipfire/mnt/

# copy boot filesystem
lvcreate --name fw-boot --size 256M vg0
mkfs.ext2 /dev/vg0/fw-boot
#mount /tmp/ipfire/ipfire-boot.img /tmp/ipfire/mnt/ -o loop
mount ipfire-boot.img /tmp/ipfire/mnt/
mount /dev/vg0/fw-boot /mnt/
cp -a  /tmp/ipfire/mnt/* /mnt/
umount /tmp/ipfire/mnt/
umount /mnt/

# copy root filesystem
lvcreate --name fw-root --size 2G vg0
mkfs.ext4 /dev/vg0/fw-root
#mount /tmp/ipfire/ipfire-root.img /tmp/ipfire/mnt/ -o loop
mount ipfire-root.img /tmp/ipfire/mnt/
mount /dev/vg0/fw-root /mnt/
cp -a  /tmp/ipfire/mnt/* /mnt/
umount /tmp/ipfire/mnt/
umount /mnt/

# copy var filesystem
lvcreate --name fw-var --size 2G vg0
mkfs.ext4 /dev/vg0/fw-var
#mount /tmp/ipfire/ipfire-var.img /tmp/ipfire/mnt/ -o loop
mount ipfire-var.img /tmp/ipfire/mnt/
mount /dev/vg0/fw-var /mnt/
cp -a  /tmp/ipfire/mnt/* /mnt/
umount /tmp/ipfire/mnt/
umount /mnt/

# create swap
lvcreate --name fw-swap --size 1G vg0
mkswap /dev/vg0/fw-swap


# clean up
rm -r /tmp/ipfire*

# create xen config file
cat <<EOF> /etc/xen/fw
#bootloader = '/usr/lib/xen-default/bin/pygrub'
bootloader = '/usr/lib/xen-4.1/bin/pygrub'
memory = 512
name = "fw"
acpi = 1
apic = 1
vif = [ 'mac=00:17:4e:be:b1:ba' ]
disk = [
    'phy:/dev/vg0/fw-boot,xvda1,w',
    'phy:/dev/vg0/fw-swap,xvda2,w',
    'phy:/dev/vg0/fw-root,xvda3,w',
    'phy:/dev/vg0/fw-var,xvda4,w'
]
acpi=1
apic=1
pci = ['00:0c.0']
extra = 'iommu=soft'
EOF

# OPTIONAL: autostart
ln -s /etc/xen/fw /etc/xen/auto/01_fw

# TODO (automate)
rmmod e100
rmmod xen-pciback
modprobe xen-pciback 'hide=(00:0c.0)'
xm pci-list-assignable-devices

# start domU
xm create -c fw

# configure ipfire in terminal

# webinterface
https://YOUR_DOMU_IP:444

# Links
http://wiki.ipfire.org/de/addons/virtualisation/howto/debian_wheezy_xen_4.1?&#debian_wheezy_mit_xen_41_als_dom0
http://wiki.ipfire.org/de/addons/virtualisation/howto/debian_als_dom0_xen#xen_und_kernel_installieren
http://wiki.ipfire.org/de/addons/virtualisation/howto/debian_xen_4.x

Magento Cache

get all cache types
Mage::app()->getCacheInstance()->getTypes();

types
Mage::app()->getCacheInstance()->cleanType('config');
Mage::app()->getCacheInstance()->cleanType('layout');
Mage::app()->getCacheInstance()->cleanType('block_html');
Mage::app()->getCacheInstance()->cleanType('translate');
Mage::app()->getCacheInstance()->cleanType('collections');
Mage::app()->getCacheInstance()->cleanType('eav');
Mage::app()->getCacheInstance()->cleanType('config_api');

clear cache
Mage::app()->cleanCache();

Magento: Update free shipping

PHP script (/root/scripts/set_free_shipping.sh)

#!/usr/bin/php
<?php
if(count($_SERVER['argv']) > 1) {
    $value=$_SERVER['argv'][1];
    
    require '/var/www/app/Mage.php';
    Mage::app(0);

    $config = new Mage_Core_Model_Config();
    $config->saveConfig('carriers/flatrate/active', $value, 'default', 0);
    $config->saveConfig('carriers/matrixrate/active', !$value, 'default', 0);

    Mage::app()->getCacheInstance()->cleanType('config');
} else {
    echo "Usage: " . $_SERVER['argv'][0] . " 0|1\n";
}
?>

Cronjob (/etc/cron.d/newyear)
0 0 1 1 * root /root/scripts/set_free_shipping.sh 0

Magento: Update footer copyright year

PHP script (/root/scripts/update_copyright_year.php)

#!/usr/bin/php
<?php
require '/var/www/app/Mage.php';
Mage::app(0);
  
# update configuration
$config = new Mage_Core_Model_Config();
$config->saveConfig('design/footer/copyright', '&copy; ' . date("Y") . ' YOUR COMPANY INC.', 'default', 0);

# refresh cache
Mage::app()->getCacheInstance()->cleanType('config');
sleep(1);
Mage::app()->getCacheInstance()->cleanType('block_html');
?>

Cronjob (/etc/cron.d/newyear)
0 0 1 1 * root /root/scripts/update_copyright_year.php

Use in CMS block
{{config path='design/footer/copyright'}}

Dep: Update by SQL
update core_config_data
set value = CONCAT('© ', YEAR(CURDATE()), ' YOUR COMPANY INC.')
where path = 'design/footer/copyright';

Links
http://www.panticz.de/Magento-Cache

ZyXEL NSA320

enable telnet
login as admin
http://192.168.2.127/r38571,/adv,/cgi-bin/remote_help-cgi?type=backdoor
telnet 192.168.2.127
root
YOUR_PASS

USB TTL to NSA-320
http://dl.panticz.de/hardware/zyxel_nsa320/nsa320_usb_ttl.jpg

install ssh
wget ftp://ftp.zyxel-tech.de/2.new_mirror/NSA310/4.40/zypkg/web_prefix -O /i-data/d154583a/admin/zy-pkgs/web_prefix
# firmware / package / reload
# install ffp
/i-data/d154583a/admin/zy-pkgs/ffp/ffp.log

#
# flash new uboot
#
# http://forum.doozan.com/read.php?2,7806
# on tftp server

DHCPD

Add static DHCP entry
# create new entry
uci add dhcp host
uci set dhcp.@host[-1].name='srv1'
uci set dhcp.@host[-1].mac='00:01:02:25:96:99'
uci set dhcp.@host[-1].ip='192.168.2.55'
uci commit dhcp

# restart dhcpd server
/etc/init.d/dnsmasq restart

Create Debian Wheezy DomU

wget https://raw.github.com/panticz/xen/master/domains/debian.wheezy.sh -O - | bash -

#!/bin/bash

# configure domU
DOMAIN_NAME=wheezy
DOMAIN_MAC=00:10:01:01:aa:bb
DOMAIN_RAM=2Gb
DOMAIN_HDD=8Gb
 
# create domU on LVM (for image file use --dir=/root, --pygrub)
xen-create-image \
 --hostname=${DOMAIN_NAME} \
 --dist=wheezy \
 --lvm=vg0 \
 --size=${DOMAIN_HDD} \
 --fs=ext4 \
 --role=udev \
 --memory=${DOMAIN_RAM} \
 --swap=${DOMAIN_RAM} \
 --dhcp \
 --mac=${DOMAIN_MAC} \
 --genpass=0 \
 --password=t00r \
 --apt_proxy=http://apt-cacher:3142/ \
 --vcpus $(cat /proc/cpuinfo | grep processor | wc -l)
 
# rename vm config
mv /etc/xen/${DOMAIN_NAME}.cfg /etc/xen/${DOMAIN_NAME}
 
# OPTIONAL: add to autostart
ln -s /etc/xen/${DOMAIN_NAME} /etc/xen/auto
 
# start domU
xm create -c ${DOMAIN_NAME}

# disable pc speaker
echo 'blacklist snd-pcsp' >> /etc/modprobe.d/blacklist.conf

# check for updates
touch /etc/apt/apt.conf.d/10periodic
if [ $(cat /etc/apt/apt.conf.d/10periodic | grep -c Update-Package-Lists) -eq 0 ]; then
 echo 'APT::Periodic::Update-Package-Lists "1";' >> /etc/apt/apt.conf.d/10periodic
fi

# fix FQDN
sed -i "s|$(hostname) $(hostname)|$(hostname -A)$(hostname)|g" /etc/hosts
 
user: root
password: t00r

OPTIONAL: enable auto updates
http://www.panticz.de/debian-ubuntu-automatic-upgrades

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