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merge preos and install

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Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>
This commit is contained in:
Nico Schottelius 2014-01-20 09:47:45 +01:00
commit f3bf1b3ea1
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278
cdist/preos.py Normal file
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# -*- coding: utf-8 -*-
#
# 2013-2014 Nico Schottelius (nico-cdist at schottelius.org)
#
# This file is part of cdist.
#
# cdist is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# cdist is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with cdist. If not, see <http://www.gnu.org/licenses/>.
#
#
import logging
import glob
import os
import subprocess
import stat
import sys
import shutil
import tempfile
import cdist.config
import cdist.exec.local
import cdist.exec.remote
log = logging.getLogger(__name__)
DEFAULT_MANIFEST = """
for pkg in \
file \
linux-image-amd64 \
openssh-server curl \
syslinux grub2 \
gdisk util-linux lvm2 mdadm \
btrfs-tools e2fsprogs jfsutils reiser4progs xfsprogs; do
__package $pkg --state present
done
# initramfs requires /init
__link /init --source /sbin/init --type symbolic
__file /etc/network/interfaces --source - --mode 0644 << eof
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
auto eth0
allow-hotplug eth0
iface eth0 inet dhcp
eof
# Steven found this out - coyping it 1:1
# fix the bloody 'stdin: is not a tty' problem
__line /root/.profile --line 'mesg n' --state absent
"""
class PreOSExistsError(cdist.Error):
def __init__(self, path):
self.path = path
def __str__(self):
return 'Path %s already exists' % self.path
class PreOSBootstrapError(cdist.Error):
pass
class PreOS(object):
def __init__(self, target_dir, arch="amd64"):
self.target_dir = target_dir
self.arch = arch
self.command = "debootstrap"
self.suite = "wheezy"
self.options = [ "--include=openssh-server",
"--arch=%s" % self.arch ]
self.pxelinux = "/usr/lib/syslinux/pxelinux.0"
self.pxelinux_cfg = """
DEFAULT preos
LABEL preos
KERNEL kernel
INITRD initramfs
"""
def _init_helper(self):
self.helper = {}
self.helper["manifest"] = self.initial_manifest
self.helper["remote_exec"] = """#!/bin/sh
# echo $@
# set -x
chroot="$1"; shift
script=$(mktemp "${chroot}/tmp/chroot-${0##*/}.XXXXXXXXXX")
trap cleanup INT TERM EXIT
cleanup() {
[ $__cdist_debug ] || rm "$script"
}
echo "#!/bin/sh -l" > "$script"
echo "$@" >> "$script"
chmod +x "$script"
relative_script="${script#$chroot}"
# ensure PATH is setup
export PATH=$PATH:/bin:/usr/bin:/sbin:/usr/sbin
# run in chroot
chroot "$chroot" "$relative_script"
"""
self.helper["remote_copy"] = """#!/bin/sh
# echo $@
# set -x
src=$1; shift
dst=$1; shift
real_dst=$(echo $dst | sed 's,:,,')
cp -L "$src" "$real_dst"
"""
@property
def exists(self):
return os.path.exists(self.target_dir)
def bootstrap(self):
if self.exists:
raise PreOSExistsError(self.target_dir)
cmd = [ self.command ]
cmd.extend(self.options)
cmd.append(self.suite)
cmd.append(self.target_dir)
log.debug("Bootstrap: %s" % cmd)
# try:
subprocess.check_call(cmd)
# except subprocess.CalledProcessError:
# raise
# Required to run this - otherwise apt-get install fails
cmd = [ "chroot", self.target_dir, "/usr/bin/apt-get", "update" ]
subprocess.check_call(cmd)
def create_helper_files(self, base_dir):
for key, val in self.helper.items():
filename = os.path.join(base_dir, key)
with open(filename, "w") as fd:
fd.write(val)
os.chmod(filename, stat.S_IRUSR | stat.S_IXUSR)
def create_kernel(self):
dst = os.path.join(self.out_dir, "kernel")
srcglob = glob.glob("%s/boot/vmlinuz-*" % self.target_dir)
src = srcglob[0]
log.info("Creating kernel ...")
shutil.copyfile(src, dst, follow_symlinks=True)
def create_pxelinux(self):
dst = os.path.join(self.out_dir, "pxelinux.0")
src = "%s/usr/lib/syslinux/pxelinux.0" % self.target_dir
log.info("Creating pxelinux.0 ...")
shutil.copyfile(src, dst, follow_symlinks=True)
def create_pxeconfig(self):
configdir = os.path.join(self.out_dir, "pxelinux.cfg")
configfile = os.path.join(configdir, "default")
log.info("Creating pxe configuration ...")
if not os.path.isdir(configdir):
os.mkdir(configdir)
with open(configfile, "w") as fd:
fd.write(self.pxelinux_cfg)
def create_initramfs(self):
out_file = os.path.join(self.out_dir, "initramfs")
cmd="cd {target_dir}; find . -print0 | cpio --null -o --format=newc | gzip -9 > {out_file}".format(target_dir = self.target_dir, out_file = out_file)
log.info("Creating initramfs ...")
subprocess.check_call(cmd, shell=True)
def ensure_out_dir_exists(self):
os.makedirs(self.out_dir, exist_ok=True)
def create_iso(self, out_dir):
self.out_dir = out_dir
self.ensure_out_dir_exists()
raise cdist.Error("Generating ISO is not yet supported")
def create_pxe(self, out_dir):
self.out_dir = out_dir
self.ensure_out_dir_exists()
self.create_kernel()
self.create_initramfs()
self.create_pxeconfig()
self.create_pxelinux()
def setup_initial_manifest(self, user_initial_manifest, replace_manifest):
if user_initial_manifest:
if user_initial_manifest == '-':
user_initial_manifest_content = sys.stdin.read()
else:
with open(user_initial_manifest, "r") as fd:
user_initial_manifest_content = fd.read()
else:
user_initial_manifest_content = ""
if replace_manifest:
self.initial_manifest = user_initial_manifest_content
else:
self.initial_manifest = "{default}\n# User supplied manifest\n{user}".format(default=DEFAULT_MANIFEST, user=user_initial_manifest_content)
def config(self):
self._init_helper()
handle, path = tempfile.mkstemp(prefix='cdist.stdin.')
with tempfile.TemporaryDirectory() as tempdir:
host = self.target_dir
self.create_helper_files(tempdir)
local = cdist.exec.local.Local(
target_host=host,
initial_manifest=os.path.join(tempdir, "manifest")
)
remote = cdist.exec.remote.Remote(
target_host=host,
remote_exec=os.path.join(tempdir, "remote_exec"),
remote_copy=os.path.join(tempdir, "remote_copy"),
)
config = cdist.config.Config(local, remote)
config.run()
@classmethod
def commandline(cls, args):
self = cls(target_dir=args.target_dir[0],
arch=args.arch)
# read initial manifest first - it may come from stdin
if args.config:
self.setup_initial_manifest(args.initial_manifest, args.replace_manifest)
# Bootstrap: creates base directory
if args.bootstrap:
self.bootstrap()
# Configure the OS
if args.config:
self.config()
# Output pxe files
if args.pxe_boot_dir:
self.create_pxe(args.pxe_boot_dir)
#if args.iso_boot_dir:
# self.create_iso(args.iso_boot)

2
docs/dev/logs/2013-11-28.preos Normal file
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- debootstrap for the moment
- add triggers: https://github.com/telmich/cdist/issues/214

109
docs/dev/logs/2014-01-09.preos Normal file
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@ -0,0 +1,109 @@
- debootstrap
x setup arch
x allow cdist to configure debootstrapped directory using cdist
x include sshd
x configure network (eth0, dhcp)
x various mkfs variants
- various fdisk tools
x add option for different initial manifest
x allow -, stdin usage
x allow to replace current manifest (later)
x trigger
- can be handled in the manifest of the user
- remove /var/cache/apt/archives/* ?
- later, optimisation level
- bug: cdist config als root!
- fix linux-image name (amd64)
- ln -s /sbin/init /init
- blog!
- self configuring
x pxe
/pxe/
- pxelinux.0
- linux
- initramfs
- pxelinux.cfg/
- default
- iso
- later
- usb stick (+efi version)
- later
- add unit tests
- testing with qemu
[22:43] bento:vm-tests% qemu-system-x86_64 -m 2G -boot order=cn -drive file=testhd1,if=virtio -net nic -net user,tftp=$(pwd -P)/tftp,bootfile=/pxelinux.0,hostfwd=tcp::7777-:22 -enable-kvm
- create preos
[22:43] bento:preos-tests% echo __panter_root_ssh_keys | sudo cdist preos -vp /home/users/nico/vm-tests/tftp -c /home/users/nico/preos-tests/preos03/ -i -
--------------------------------------------------------------------------------
[1:16] bento:~% sudo cdist preos -vc ~nico/preos-tests/preos03
INFO: cdist: version 3.0.0-38-gea286c6
INFO: /home/users/nico/preos-tests/preos03: Running global explorers
INFO: /home/users/nico/preos-tests/preos03: Running initial manifest /tmp/tmpxbquwe/manifest
INFO: /home/users/nico/preos-tests/preos03: Running manifest and explorers for __file/etc/network/interfaces
INFO: /home/users/nico/preos-tests/preos03: Generating code for __file/etc/network/interfaces
INFO: /home/users/nico/preos-tests/preos03: Running manifest and explorers for __package/xfsprogs
INFO: /home/users/nico/preos-tests/preos03: Running manifest and explorers for __package/reiser4progs
INFO: /home/users/nico/preos-tests/preos03: Running manifest and explorers for __package/jfsutils
INFO: /home/users/nico/preos-tests/preos03: Running manifest and explorers for __package/e2fsprogs
INFO: /home/users/nico/preos-tests/preos03: Running manifest and explorers for __package/btrfs-tools
INFO: /home/users/nico/preos-tests/preos03: Running manifest and explorers for __package/file
INFO: /home/users/nico/preos-tests/preos03: Running manifest and explorers for __package/syslinux
INFO: /home/users/nico/preos-tests/preos03: Running manifest and explorers for __package/openssh-server
INFO: /home/users/nico/preos-tests/preos03: Running manifest and explorers for __package/linux-image-amd64
INFO: /home/users/nico/preos-tests/preos03: Running manifest and explorers for __package_apt/linux-image-amd64
INFO: /home/users/nico/preos-tests/preos03: Generating code for __package_apt/linux-image-amd64
INFO: /home/users/nico/preos-tests/preos03: Running manifest and explorers for __package_apt/openssh-server
INFO: /home/users/nico/preos-tests/preos03: Generating code for __package_apt/openssh-server
INFO: /home/users/nico/preos-tests/preos03: Running manifest and explorers for __package_apt/syslinux
INFO: /home/users/nico/preos-tests/preos03: Generating code for __package_apt/syslinux
INFO: /home/users/nico/preos-tests/preos03: Running manifest and explorers for __package_apt/file
INFO: /home/users/nico/preos-tests/preos03: Generating code for __package_apt/file
INFO: /home/users/nico/preos-tests/preos03: Running manifest and explorers for __package_apt/btrfs-tools
INFO: /home/users/nico/preos-tests/preos03: Generating code for __package_apt/btrfs-tools
INFO: /home/users/nico/preos-tests/preos03: Running manifest and explorers for __package_apt/e2fsprogs
INFO: /home/users/nico/preos-tests/preos03: Generating code for __package_apt/e2fsprogs
INFO: /home/users/nico/preos-tests/preos03: Running manifest and explorers for __package_apt/jfsutils
INFO: /home/users/nico/preos-tests/preos03: Generating code for __package_apt/jfsutils
INFO: /home/users/nico/preos-tests/preos03: Running manifest and explorers for __package_apt/reiser4progs
INFO: /home/users/nico/preos-tests/preos03: Generating code for __package_apt/reiser4progs
INFO: /home/users/nico/preos-tests/preos03: Running manifest and explorers for __package_apt/xfsprogs
INFO: /home/users/nico/preos-tests/preos03: Generating code for __package_apt/xfsprogs
INFO: /home/users/nico/preos-tests/preos03: Generating code for __package/xfsprogs
INFO: /home/users/nico/preos-tests/preos03: Generating code for __package/reiser4progs
INFO: /home/users/nico/preos-tests/preos03: Generating code for __package/jfsutils
INFO: /home/users/nico/preos-tests/preos03: Generating code for __package/e2fsprogs
INFO: /home/users/nico/preos-tests/preos03: Generating code for __package/btrfs-tools
INFO: /home/users/nico/preos-tests/preos03: Generating code for __package/file
INFO: /home/users/nico/preos-tests/preos03: Generating code for __package/syslinux
INFO: /home/users/nico/preos-tests/preos03: Generating code for __package/openssh-server
INFO: /home/users/nico/preos-tests/preos03: Generating code for __package/linux-image-amd64
INFO: /home/users/nico/preos-tests/preos03: Finished successful run in 2.546635866165161 seconds
[1:16] bento:~%
--------------------------------------------------------------------------------
[21:14] bento:vm-tests% qemu-system-x86_64 -m 2G -boot order=cn -drive file=testhd1,if=virtio -net nic -net user,tftp=$(pwd -P)/tftp,bootfile=/pxelinux.0
--------------------------------------------------------------------------------
[21:16] bento:preos-tests% sudo cdist preos -vp /home/users/nico/vm-tests/tftp /home/users/nico/preos-tests/preos03/
INFO: cdist: version 3.0.0-42-g0d78ab3
INFO: cdist.preos: Creating kernel ...
INFO: cdist.preos: Creating initramfs ...
760780 blocks
INFO: cdist.preos: Creating pxe configuration ...
INFO: cdist.preos: Creating pxelinux.0 ...

24
scripts/cdist
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@ -27,6 +27,7 @@ def commandline():
import cdist.banner
import cdist.config
import cdist.install
import cdist.preos
import cdist.shell
# Construct parser others can reuse
@ -86,6 +87,29 @@ def commandline():
default=cdist.REMOTE_EXEC)
parser['config'].set_defaults(func=cdist.config.Config.commandline)
# PreOS
parser['preos'] = parser['sub'].add_parser('preos',
parents=[parser['loglevel']])
parser['preos'].add_argument('-a', '--arch',
help='Select architecture for preos', default="amd64")
parser['preos'].add_argument('-b', '--bootstrap',
help='Bootstrap directory with PreOS', action="store_true")
parser['preos'].add_argument('-c', '--configure',
help='Configure previously bootstrapped directory',
action="store_true", dest="config")
parser['preos'].add_argument('-i', '--initial-manifest',
help='Initial manifest for configuration (added to built in)')
parser['preos'].add_argument('-r', '--replace-manifest',
help='Instead of appending to the built in manifest, replace the internal manifest',
action="store_true")
# parser['preos'].add_argument('-I', '--iso-boot-dir',
# help='Create ISO for booting in given location')
parser['preos'].add_argument('-p', '--pxe-boot-dir',
help='Create PXE files for booting in given location')
parser['preos'].add_argument('target_dir', nargs=1,
help='Select target directory')
parser['preos'].set_defaults(func=cdist.preos.PreOS.commandline)
# Shell
parser['shell'] = parser['sub'].add_parser('shell',
parents=[parser['loglevel']])