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Merge pull request #313 from Smana/choose_k8s_version

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Helper to change k8s version
This commit is contained in:
Smaine Kahlouch 2016-06-29 15:14:32 +02:00 committed by GitHub
commit f80b13310b
9 changed files with 158 additions and 132 deletions
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12
roles/download/defaults/main.yml
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@ -5,7 +5,8 @@ local_release_dir: /tmp
download_run_once: False
# Versions
kube_version: "v1.2.4"
include_vars: kube_versions.yml
etcd_version: v2.3.7
calico_version: v0.20.0
calico_cni_version: v1.3.1
@ -28,9 +29,6 @@ calico_cni_checksum: "ac05cb9254b5aaa5822cf10325983431bd25489147f2edf9dec7e43d99
calico_cni_ipam_checksum: "3df6951a30749c279229e7e318e74ac4e41263996125be65257db7cd25097273"
weave_checksum: "28d2c4e2b1ad8600da69882501eba697679aea10a5e61c769aa3a9ee72b0d89a"
etcd_checksum: "ab102d271026a4060c9f85ecad11f454d82b1df7b8e676cc3da69f67eb078729"
kubectl_checksum: "dac61fbd506f7a17540feca691cd8a9d9d628d59661eebce788a50511f578897"
kubelet_checksum: "4adaf40592248eef6fd4fa126464915ea41e624a70dc77178089760ed235e341"
kube_apiserver_checksum: "6ac99b36b02968459e026fcfc234207c66064b5e11816b69dd8fc234b2ffec1e"
downloads:
calico:
@ -77,7 +75,7 @@ downloads:
kubernetes_kubelet:
version: "{{kube_version}}"
dest: kubernetes/bin/kubelet
sha256: "{{kubelet_checksum}}"
sha256: "{{vars['kube_checksum'][kube_version]['kubelet']}}"
source_url: "{{ kubelet_download_url }}"
url: "{{ kubelet_download_url }}"
owner: "kube"
@ -85,7 +83,7 @@ downloads:
kubernetes_kubectl:
dest: kubernetes/bin/kubectl
version: "{{kube_version}}"
sha256: "{{kubectl_checksum}}"
sha256: "{{vars['kube_checksum'][kube_version]['kubectl']}}"
source_url: "{{ kubectl_download_url }}"
url: "{{ kubectl_download_url }}"
owner: "kube"
@ -93,7 +91,7 @@ downloads:
kubernetes_apiserver:
dest: kubernetes/bin/kube-apiserver
version: "{{kube_version}}"
sha256: "{{kube_apiserver_checksum}}"
sha256: "{{vars['kube_checksum'][kube_version]['kube_apiserver']}}"
source_url: "{{ apiserver_download_url }}"
url: "{{ apiserver_download_url }}"
owner: "kube"

2
roles/download/tasks/main.yml
View file

@ -1,4 +1,6 @@
---
- include_vars: kube_versions.yml
- name: downloading...
debug:
msg: "{{ download.url }}"

14
roles/download/vars/kube_versions.yml Normal file
View file

@ -0,0 +1,14 @@
kube_checksum:
v1.2.2:
kube_apiserver: eb1bfd8b877052cbd1991b8c429a1d06661f4cb019905e20e128174f724e16de
kubectl: 473e6924569fba30d4a50cecdc2cae5f31d97d1f662463e85b74a472105dcff4
kubelet: f16827dc7e7c82f0e215f0fc73eb01e2dfe91a2ec83f9cbcaf8d37c91b64fd3b
v1.2.3:
kube_apiserver_checksum: ebaeeeb72cb29b358337b330617a96355ff2d08a5a523fc1a81beba36cc9d6f9
kubectl_checksum: 394853edd409a721bcafe4f1360009ef9f845050719fe7d6fc7176f45cc92a8c
kubelet_checksum: 633bb41c51c5c0df0645dd60ba82b12eba39d009eb87bae9227de7d9a89c0797
v1.2.4:
kube_apiserver: 6ac99b36b02968459e026fcfc234207c66064b5e11816b69dd8fc234b2ffec1e
kubectl: dac61fbd506f7a17540feca691cd8a9d9d628d59661eebce788a50511f578897
kubelet: 4adaf40592248eef6fd4fa126464915ea41e624a70dc77178089760ed235e341
kube_version: v1.2.4

2
roles/kubernetes/node/defaults/main.yml
View file

@ -31,7 +31,7 @@ dns_domain: "{{ cluster_name }}"
kube_proxy_mode: userspace
hyperkube_image_repo: quay.io/smana/kubernetes-hyperkube
hyperkube_image_repo: "quay.io/smana/kubernetes-hyperkube"
hyperkube_image_tag: "v1.2.4"
# IP address of the DNS server.

12
roles/uploads/defaults/main.yml
View file

@ -2,7 +2,8 @@
local_release_dir: /tmp
# Versions
kube_version: "v1.2.4"
include_vars: kube_versions.yml
etcd_version: v2.3.7
calico_version: v0.20.0
calico_cni_version: v1.3.1
@ -22,9 +23,6 @@ calico_cni_checksum: "ac05cb9254b5aaa5822cf10325983431bd25489147f2edf9dec7e43d99
calico_cni_ipam_checksum: "3df6951a30749c279229e7e318e74ac4e41263996125be65257db7cd25097273"
weave_checksum: "28d2c4e2b1ad8600da69882501eba697679aea10a5e61c769aa3a9ee72b0d89a"
etcd_checksum: "ab102d271026a4060c9f85ecad11f454d82b1df7b8e676cc3da69f67eb078729"
kubectl_checksum: "dac61fbd506f7a17540feca691cd8a9d9d628d59661eebce788a50511f578897"
kubelet_checksum: "4adaf40592248eef6fd4fa126464915ea41e624a70dc77178089760ed235e341"
kube_apiserver_checksum: "6ac99b36b02968459e026fcfc234207c66064b5e11816b69dd8fc234b2ffec1e"
downloads:
- name: calico
@ -76,7 +74,7 @@ downloads:
- name: kubernetes-kubelet
version: "{{kube_version}}"
dest: kubernetes/bin/kubelet
sha256: "{{kubelet_checksum}}"
sha256: "{{vars['kube_checksum'][kube_version]['kubelet']}}"
source_url: "{{ kube_download_url }}/kubelet"
url: "{{ kube_download_url }}/kubelet"
owner: "kube"
@ -85,7 +83,7 @@ downloads:
- name: kubernetes-kubectl
dest: kubernetes/bin/kubectl
version: "{{kube_version}}"
sha256: "{{kubectl_checksum}}"
sha256: "{{vars['kube_checksum'][kube_version]['kubectl']}}"
source_url: "{{ kube_download_url }}/kubectl"
url: "{{ kube_download_url }}/kubectl"
owner: "kube"
@ -94,7 +92,7 @@ downloads:
- name: kubernetes-apiserver
dest: kubernetes/bin/kube-apiserver
version: "{{kube_version}}"
sha256: "{{kube_apiserver_checksum}}"
sha256: "{{vars['kube_checksum'][kube_version]['kube_apiserver']}}"
source_url: "{{ kube_download_url }}/kube-apiserver"
url: "{{ kube_download_url }}/kube-apiserver"
owner: "kube"

2
roles/uploads/tasks/main.yml
View file

@ -1,4 +1,6 @@
---
- include_vars: "kube_versions.yml"
- name: Create the checksum file
lineinfile:
create: yes

14
roles/uploads/vars/kube_versions.yml Normal file
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@ -0,0 +1,14 @@
kube_checksum:
v1.2.2:
kube_apiserver: eb1bfd8b877052cbd1991b8c429a1d06661f4cb019905e20e128174f724e16de
kubectl: 473e6924569fba30d4a50cecdc2cae5f31d97d1f662463e85b74a472105dcff4
kubelet: f16827dc7e7c82f0e215f0fc73eb01e2dfe91a2ec83f9cbcaf8d37c91b64fd3b
v1.2.3:
kube_apiserver_checksum: ebaeeeb72cb29b358337b330617a96355ff2d08a5a523fc1a81beba36cc9d6f9
kubectl_checksum: 394853edd409a721bcafe4f1360009ef9f845050719fe7d6fc7176f45cc92a8c
kubelet_checksum: 633bb41c51c5c0df0645dd60ba82b12eba39d009eb87bae9227de7d9a89c0797
v1.2.4:
kube_apiserver: 6ac99b36b02968459e026fcfc234207c66064b5e11816b69dd8fc234b2ffec1e
kubectl: dac61fbd506f7a17540feca691cd8a9d9d628d59661eebce788a50511f578897
kubelet: 4adaf40592248eef6fd4fa126464915ea41e624a70dc77178089760ed235e341
kube_version: v1.2.4

115
scripts/change_k8s_version.py Normal file
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@ -0,0 +1,115 @@
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright 2016 Kubespray
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
import sys
import hashlib
import urllib2
import yaml
import argparse
import shutil
from re import sub
def get_remote_sha256_sum(url, max_file_size=100*1024*1024):
remote = urllib2.urlopen(url)
hash = hashlib.sha256()
total_read = 0
while True:
data = remote.read(4096)
total_read += 4096
if not data or total_read > max_file_size:
break
hash.update(data)
return hash.hexdigest()
def read_vars(var_file):
"""
Read the variables file
"""
try:
with open(var_file, "r") as f:
kargovars = yaml.load(f)
except:
print(
"Can't read variables file %s" % var_file
)
sys.exit(1)
return kargovars
def get_kube_sha256(version, download_url, binaries):
kube_sha256 = dict()
for k in binaries:
s = get_remote_sha256_sum(download_url + '/' + k)
kube_sha256[k] = s
kube_sha256['kube_apiserver'] = kube_sha256.pop('kube-apiserver')
return(kube_sha256)
def file_sub(file, regex, string):
"Substitute string in a file"
shutil.move(file, file + '~')
f = open(file + '~', 'r')
data = f.read()
o = open(file, 'w')
o.write(sub(regex, string, data))
f.close()
o.close()
os.remove(file + '~')
if __name__ == '__main__':
parser = argparse.ArgumentParser(
prog='change_k8s_version',
description='%(prog)s changes the version to be installed with kargo',
)
parser.add_argument(
'-v', '--version', dest='kube_version', required=True,
help="kubernetes version"
)
parser.add_argument(
'-r', '--repository', dest='docker_repository', required=True,
help="hyperkube docker repository"
)
args = parser.parse_args()
kargo_root_path = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
file_sub(
os.path.join(kargo_root_path, 'roles/kubernetes/node/defaults/main.yml'),
r'.*hyperkube_image_repo.*', 'hyperkube_image_repo: "%s"' % args.docker_repository
)
file_sub(
os.path.join(kargo_root_path, 'roles/kubernetes/node/defaults/main.yml'),
r'.*hyperkube_image_tag.*', 'hyperkube_image_tag: "%s"' % args.kube_version
)
kube_binaries = ['kubelet', 'kubectl', 'kube-apiserver']
var_files = [
os.path.join(kargo_root_path, 'roles/uploads/vars/kube_versions.yml'),
os.path.join(kargo_root_path, 'roles/download/vars/kube_versions.yml')
]
kube_download_url = "https://storage.googleapis.com/kubernetes-release/release/%s/bin/linux/amd64" % args.kube_version
new = get_kube_sha256(args.kube_version, kube_download_url, kube_binaries)
for f in var_files:
current = read_vars(f)
current['kube_checksum'][args.kube_version] = new
with open(f, 'w') as out:
out.write(yaml.dump(current, indent=4, default_flow_style=False))

117
scripts/change_k8s_version.sh
View file

@ -1,117 +0,0 @@
#!/bin/bash
# This file is part of Kargo.
#
# Foobar 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.
#
# Foobar 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 Foobar. If not, see <http://www.gnu.org/licenses/>.
#color variables
txtbld=$(tput bold) # Bold
bldred=${txtbld}$(tput setaf 1) # red
bldgre=${txtbld}$(tput setaf 2) # green
bldylw=${txtbld}$(tput setaf 3) # yellow
txtrst=$(tput sgr0) # Reset
err=${bldred}ERROR${txtrst}
info=${bldgre}INFO${txtrst}
warn=${bldylw}WARNING${txtrst}
usage()
{
cat << EOF
Update ansible playbook with a specific kubernetes version
Usage : $(basename $0) -v <k8s version>
-h | --help : Show this message
-i | --init : Initial upgrade (download binaries)
-v | --version : Kubernetes version
ex : switch to kubernetes v1.2.4
$(basename $0) -v v1.2.4
EOF
}
# Options parsing
while (($#)); do
case "$1" in
-h | --help) usage; exit 0;;
-i | --init) INIT=1; shift;;
-v | --version) VERS=${2}; shift 2;;
*)
usage
echo "ERROR : Unknown option"
exit 3
;;
esac
done
if [ -z ${VERS} ]; then
usage
echo -e "\n${err}: The option version must be defined"
exit 3
else
if ! [[ ${VERS} =~ ^v[0-9]\.[0-9]\.[0-9]$ ]]; then
echo -e "\n${err}: Invalid version format (ex: v1.2.4)"
exit 1
fi
fi
UPLOAD_VARFILE="roles/uploads/defaults/main.yml"
DOWNLOAD_VARFILE="roles/download/defaults/main.yml"
K8S_BIN="kubelet kubectl kube-apiserver"
if [[ ${INIT} -eq 1 ]]; then
DOWNLOAD_URL=https://storage.googleapis.com/kubernetes-release/release/${VERS}/bin/linux/amd64
TMP_DIR=$(mktemp -d --tmpdir kubernetes_tmpbin_XXXXXXX)
sed -i "s/^hyperkube_image_tag.*$/hyperkube_image_tag: \"${VERS}\"/" roles/kubernetes/node/defaults/main.yml
trap 'rm -rf "${tmpdir}"' EXIT
cd "${tmpdir}"
for BIN in ${K8S_BIN}; do
curl -s -o ${BIN} ${DOWNLOAD_URL}/${BIN}
if [ $? -ne 0 ]; then
echo -e "\n${err}: Downloading ${BIN} failed! Try again"
exit 1
else
echo -e "\n${info}: ${BIN} downloaded successfuly"
fi
done
for varfile in ${UPLOAD_VARFILE} ${DOWNLOAD_VARFILE}; do
sed -i "s/^kube_version.*$/kube_version: \"${VERS}\"/" ${varfile}
for BIN in ${K8S_BIN}; do
CHECKSUM=$(sha256sum ${BIN} | cut -d' ' -f1)
BIN=$(echo ${BIN} | tr '-' '_')
sed -i "s/^${BIN}_checksum.*$/${BIN}_checksum: \"${CHECKSUM}\"/" ${varfile}
done
done
rm -rf "${tmpdir}"
else
CHECKSUM_URL=https://storage.googleapis.com/kargo/${VERS}_k8s-sha256
sed -i "s/^hyperkube_image_tag.*$/hyperkube_image_tag: \"${VERS}\"/" roles/kubernetes/node/defaults/main.yml
for varfile in ${UPLOAD_VARFILE} ${DOWNLOAD_VARFILE}; do
sed -i "s/^kube_version.*$/kube_version: \"${VERS}\"/" ${varfile}
for BIN in ${K8S_BIN}; do
if [[ "${BIN}" =~ "apiserver" ]]; then
BIN="apiserver"
fi
line=$(curl -sk ${CHECKSUM_URL} | grep ${BIN})
CHECKSUM=$(echo ${line} | cut -d':' -f2)
if [[ "${BIN}" =~ "apiserver" ]]; then
BIN="kube_apiserver"
fi
sed -i "s/^${BIN}_checksum.*$/${BIN}_checksum: \"${CHECKSUM}\"/" ${varfile}
done
done
fi