python jinjia2模板使用

https://gist.github.com/wrunk/1317933

#!/usr/bin/env python
# -*- coding: utf-8 -*-

from jinja2 import Environment, FileSystemLoader
import os

if __name__ == '__main__':
    j2_path = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'jinja2')
    kickstart_path = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'kickstart')
    pxe_path = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'pxe')

    j2_env = Environment(loader=FileSystemLoader(j2_path))

    host = {
        'root_password': '123456',
        'os': 'centos-6',
        'install_host': 'install.localhost',
        'name': 'bjtn-g18-10-11',
        'interface': [
            {'dev': 'em1', 'mac': 'aa:aa:aa:aa:aa:01', 'ip': '10.0.10.11', 'mask': '255.255.255.0'},
            {'dev': 'em2', 'mac': 'aa:aa:aa:aa:aa:02', 'ip': '200.0.10.11', 'mask': '255.255.255.192'}
        ],
       'gateway': '10.0.10.1'
    }

    with open(os.path.join(kickstart_path, host['interface'][0]['mac']), 'w') as f:
        f.write(j2_env.get_template('ks-centos-6').render(host=host))

    with open(os.path.join(pxe_path, host['interface'][0]['mac']), 'w') as f:
        f.write(j2_env.get_template('pxe-centos-6').render(host=host))

pxe-centos-6

LABEL {{ os }}
    MENU DEFAULT
    MENU LABEL {{ mac }}
    KERNEL {{ os }}/vmlinuz
    APPEND initrd={{ os }}/initrd.img ks=http://{{ install_host }}/kickstart/{{ mac }} ksdevice=link ramdisk_size=102400 console=tty0 console=ttyS1,115200

ks-centos-6

# kickstart
lang en_US.UTF-8
keyboard us
timezone Asia/Shanghai

auth --enableshadow --passalgo=sha512
#python -c 'import crypt; print(crypt.crypt("MyPassword", "$6$MySalt"))'
rootpw --iscrypted {{ host.root_password }}
text
install
skipx
url --url http://{{ host.install_host }}/{{ host.os }}

bootloader --location=mbr
zerombr
clearpart --drives=sda --all #--initlabel 

part swap --fstype='swap' --ondisk=sda --size=8000
part / --fstype='ext4' --ondisk=sda --size=50000
part /opt --fstype='ext4' --ondisk=sda --grow --size=1

network --device={{ host.interface[0].mac }} --bootproto=dhcp --activate

firewall --disabled
selinux --disabled
services --disabled=NetworkManager,ip6tables,iptables,postfix,cpuspeed
services --enabled=network
firstboot --disabled
reboot

%packages
@Base
wget
%end

%pre
clearpart --drives=sda --all
/usr/sbin/parted -s /dev/sda mklabel gpt
%end

%post
cat > /etc/sysconfig/network << _EOF_
NETWORKING=yes
HOSTNAME={{ host.name }}
GATEWAY={{ host.gateway }}
_EOF_

{% for nic in host.interface %}
cat > /etc/sysconfig/network-scripts/ifcfg-{{ nic.dev }} << _EOF_
BOOTPROTO=static
DEVICE={{ nic.dev }}
IPADDR={{ nic.ip }}
NETMASK={{ nic.mask }}
ONBOOT=yes
_EOF_
{% endfor %}
%end