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Merge pull request #376 from Yannig/kubectl
Kubernetes connection support for mitogen.
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# coding: utf-8 | ||
# Copyright 2018, Yannig Perré | ||
# | ||
# Redistribution and use in source and binary forms, with or without | ||
# modification, are permitted provided that the following conditions are met: | ||
# | ||
# 1. Redistributions of source code must retain the above copyright notice, | ||
# this list of conditions and the following disclaimer. | ||
# | ||
# 2. Redistributions in binary form must reproduce the above copyright notice, | ||
# this list of conditions and the following disclaimer in the documentation | ||
# and/or other materials provided with the distribution. | ||
# | ||
# 3. Neither the name of the copyright holder nor the names of its contributors | ||
# may be used to endorse or promote products derived from this software without | ||
# specific prior written permission. | ||
# | ||
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | ||
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | ||
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | ||
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | ||
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | ||
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | ||
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | ||
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | ||
# POSSIBILITY OF SUCH DAMAGE. | ||
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from __future__ import absolute_import | ||
import os.path | ||
import sys | ||
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try: | ||
import ansible_mitogen | ||
except ImportError: | ||
base_dir = os.path.dirname(__file__) | ||
sys.path.insert(0, os.path.abspath(os.path.join(base_dir, '../../..'))) | ||
del base_dir | ||
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import ansible_mitogen.connection | ||
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class Connection(ansible_mitogen.connection.Connection): | ||
transport = 'kubectl' |
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# coding: utf-8 | ||
# Copyright 2018, Yannig Perré | ||
# | ||
# Redistribution and use in source and binary forms, with or without | ||
# modification, are permitted provided that the following conditions are met: | ||
# | ||
# 1. Redistributions of source code must retain the above copyright notice, | ||
# this list of conditions and the following disclaimer. | ||
# | ||
# 2. Redistributions in binary form must reproduce the above copyright notice, | ||
# this list of conditions and the following disclaimer in the documentation | ||
# and/or other materials provided with the distribution. | ||
# | ||
# 3. Neither the name of the copyright holder nor the names of its contributors | ||
# may be used to endorse or promote products derived from this software without | ||
# specific prior written permission. | ||
# | ||
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | ||
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | ||
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | ||
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | ||
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | ||
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | ||
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | ||
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | ||
# POSSIBILITY OF SUCH DAMAGE. | ||
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import logging | ||
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import mitogen.core | ||
import mitogen.parent | ||
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LOG = logging.getLogger(__name__) | ||
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class Stream(mitogen.parent.Stream): | ||
child_is_immediate_subprocess = True | ||
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pod = None | ||
container = None | ||
username = None | ||
kubectl_path = 'kubectl' | ||
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# TODO: better way of capturing errors such as "No such container." | ||
create_child_args = { | ||
'merge_stdio': True | ||
} | ||
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def construct(self, pod = None, container=None, | ||
kubectl_path=None, username=None, | ||
**kwargs): | ||
assert pod | ||
super(Stream, self).construct(**kwargs) | ||
if pod: | ||
self.pod = pod | ||
if container: | ||
self.container = container | ||
if kubectl_path: | ||
self.kubectl_path = kubectl_path | ||
if username: | ||
self.username = username | ||
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def connect(self): | ||
super(Stream, self).connect() | ||
self.name = u'kubectl.' + (self.pod) + str(self.container) | ||
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def get_boot_command(self): | ||
args = ['exec', '-it', self.pod] | ||
if self.username: | ||
args += ['--username=' + self.username] | ||
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if self.container: | ||
args += ['--container=' + self.container] | ||
bits = [self.kubectl_path] | ||
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return bits + args + [ "--" ] + super(Stream, self).get_boot_command() |
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--- | ||
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- name: "Create pod" | ||
tags: always | ||
hosts: localhost | ||
gather_facts: no | ||
tasks: | ||
- name: Create a test pod | ||
k8s: | ||
state: present | ||
definition: | ||
apiVersion: v1 | ||
kind: Pod | ||
metadata: | ||
name: test-pod-{{item}} | ||
namespace: default | ||
spec: | ||
containers: | ||
- name: python2 | ||
image: python:2 | ||
args: [ "sleep", "100000" ] | ||
loop: "{{ range(10)|list }}" | ||
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- name: "Wait pod to be running" | ||
debug: { msg: "pod is running" } | ||
# status and availableReplicas might not be there. Using default value (d(default_value)) | ||
until: "pod_def.status.containerStatuses[0].ready" | ||
# Waiting 100 s | ||
retries: 50 | ||
delay: 2 | ||
vars: | ||
pod_def: "{{lookup('k8s', kind='Pod', namespace='default', resource_name='test-pod-' ~ item)}}" | ||
loop: "{{ range(10)|list }}" | ||
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- name: "Add pod to pods group" | ||
add_host: | ||
name: "test-pod-{{item}}" | ||
groups: [ "pods" ] | ||
ansible_connection: "kubectl" | ||
changed_when: no | ||
tags: "always" | ||
loop: "{{ range(10)|list }}" | ||
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- name: "Test kubectl connection (default strategy)" | ||
tags: default | ||
hosts: pods | ||
strategy: "linear" | ||
gather_facts: no | ||
tasks: | ||
- name: "Simple shell with linear" | ||
shell: ls /tmp | ||
loop: [ 1, 2, 3, 4, 5 ] | ||
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- name: "Simple file with linear" | ||
file: | ||
path: "/etc" | ||
state: directory | ||
loop: [ 1, 2, 3, 4, 5 ] | ||
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- name: "Test kubectl connection (mitogen strategy)" | ||
tags: mitogen | ||
hosts: pods | ||
strategy: "mitogen_linear" | ||
gather_facts: no | ||
tasks: | ||
- name: "Simple shell with mitogen" | ||
shell: ls /tmp | ||
loop: [ 1, 2, 3, 4, 5 ] | ||
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- name: "Simple file with mitogen" | ||
file: | ||
path: "/etc" | ||
state: directory | ||
loop: [ 1, 2, 3, 4, 5 ] | ||
register: _ | ||
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- name: "Destroy pod" | ||
tags: cleanup | ||
hosts: localhost | ||
gather_facts: no | ||
tasks: | ||
- name: Destroy pod | ||
k8s: | ||
state: absent | ||
definition: | ||
apiVersion: v1 | ||
kind: Pod | ||
metadata: | ||
name: test-pod-{{item}} | ||
namespace: default | ||
loop: "{{ range(10)|list }}" |