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readd lxc connection plugin as submodule

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Jörg Thalheim 2015-10-03 22:24:07 +00:00
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[submodule "connection_plugins/lxc"]
path = connection_plugins/lxc
url = git@github.com:Mic92/ansible-lxc.git

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connection_plugins/lxc Submodule

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Subproject commit e6e168920486dc6e1249a6c8849cd98186fab6f5

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# Byte-compiled / optimized / DLL files
__pycache__/
*.py[cod]
# C extensions
*.so
# Distribution / packaging
.Python
env/
build/
develop-eggs/
dist/
downloads/
eggs/
lib/
lib64/
parts/
sdist/
var/
*.egg-info/
.installed.cfg
*.egg
# PyInstaller
# Usually these files are written by a python script from a template
# before PyInstaller builds the exe, so as to inject date/other infos into it.
*.manifest
*.spec
# Installer logs
pip-log.txt
pip-delete-this-directory.txt
# Unit test / coverage reports
htmlcov/
.tox/
.coverage
.cache
nosetests.xml
coverage.xml
# Translations
*.mo
*.pot
# Django stuff:
*.log
# Sphinx documentation
docs/_build/
# PyBuilder
target/

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connection_plugins/lxc/LICENSE
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That's all there is to it!

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ansible-lxc
===========
Ansible Connection Plugin for lxc containers (https://linuxcontainers.org/)
INSTALL
=======
* Install python2 version of lxc bindings:
- https://github.com/lxc/python2-lxc
* Clone the plugin in your ansible directory
```
$ mkdir -p /etc/ansible/connection_plugins/
$ git clone git@github.com:Mic92/ansible-lxc.git /etc/ansible/connection_plugins/lxc
```
If your ansible code is already managed by git, you might want to add a submodule instead:
```
$ mkdir -p /etc/ansible/connection_plugins/
$ git submodule add git@github.com:Mic92/ansible-lxc.git /etc/ansible/connection_plugins/lxc
```
* Then add lxc directory to plugin search path in `ansible.cfg`:
```
connection_plugins = /usr/share/ansible_plugins/connection_plugins:/etc/ansible/connection_plugins/lxc
```
USAGE
=====
In your hosts file use container name (`examplecontainer` in this case) as hostname and `ansible_connection` to lxc:
examplecontainer ansible_connection=lxc

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connection_plugins/lxc/lxc.py
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from __future__ import absolute_import
import os, sys
import subprocess
import shutil
import traceback
import select
from ansible import errors
from ansible.callbacks import vvv
import lxc as _lxc
class Connection(object):
""" Local lxc based connections """
def __init__(self, runner, host, port, *args, **kwargs):
self.has_pipelining = False
self.host = host
self.runner = runner
self.container = _lxc.Container(host)
if self.container.state == "STOPPED":
raise errors.AnsibleError("%s is not running" % host)
def connect(self, port=None):
""" connect to the lxc; nothing to do here """
vvv("THIS IS A LOCAL LXC DIR", host=self.host)
return self
def exec_command(self, cmd, tmp_path, sudo_user=None, become_user=None, sudoable=False, executable="/bin/sh", in_data=None, su=None, su_user=None):
""" run a command on the chroot """
local_cmd = [cmd]
if executable:
local_cmd = [executable, "-c"] + local_cmd
if sudo_user:
local_cmd = ["sudo", "-u", sudo_user, "--"] + local_cmd
read_stdout, write_stdout = os.pipe()
read_stderr, write_stderr = os.pipe()
vvv("EXEC %s" % (local_cmd), host=self.host)
pid = self.container.attach(_lxc.attach_run_command, local_cmd,
stdout=write_stdout,
stderr=write_stderr)
os.close(write_stdout)
os.close(write_stderr)
fds = [read_stdout, read_stderr]
buf = { read_stdout: [], read_stderr: [] }
while len(fds) > 0:
ready_fds, _, _ = select.select(fds, [], [])
for fd in ready_fds:
data = os.read(fd, 32768)
if not data:
fds.remove(fd)
os.close(fd)
buf[fd].append(data)
(pid, returncode) = os.waitpid(pid, 0)
stdout = b"".join(buf[read_stdout])
stderr = b"".join(buf[read_stderr])
return (returncode, "", stdout, stderr)
def put_file(self, in_path, out_path):
""" transfer a file from local to lxc """
vvv("PUT %s TO %s" % (in_path, out_path), host=self.host)
if not os.path.exists(in_path):
raise errors.AnsibleFileNotFound("file or module does not exist: %s" % in_path)
try:
src_file = open(in_path, "rb")
except IOError:
traceback.print_exc()
raise errors.AnsibleError("failed to open file to %s" % in_path)
def write_file(args):
dst_file = open(out_path, 'wb')
shutil.copyfileobj(src_file, dst_file)
try:
self.container.attach_wait(write_file, None)
except IOError:
traceback.print_exc()
raise errors.AnsibleError("failed to transfer file to %s" % out_path)
def fetch_file(self, in_path, out_path):
""" fetch a file from lxc to local """
vvv("FETCH %s TO %s" % (in_path, out_path), host=self.host)
if not os.path.exists(in_path):
raise errors.AnsibleFileNotFound("file or module does not exist: %s" % in_path)
try:
dst_file = open(out_path, "wb")
except IOError:
traceback.print_exc()
raise errors.AnsibleError("failed to write to file %s" % out_path)
def write_file(args):
src_file = open(in_path, 'rb')
shutil.copyfileobj(src_file, dst_file)
try:
self.container.attach_wait(write_file, None)
except IOError:
traceback.print_exc()
raise errors.AnsibleError("failed to transfer file from %s to %s" % (in_path, out_path))
def close(self):
""" terminate the connection; nothing to do here """
pass