Launch kubemark with an existing Kubemark Master

In order to expand the use of kubemark, allow developers to
use kubemark with a pre-existing Kubemark master.
This commit is contained in:
Ryan Hallisey 2017-03-06 16:08:28 -05:00
parent c10cc3decd
commit 82e1d208f6
5 changed files with 176 additions and 24 deletions

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#!/bin/bash
# Copyright 2017 The Kubernetes Authors.
#
# 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.
# Configuration for landing a Kubemark cluster on a pre-existing Kubernetes
# cluster.
# Pre-existing provider expects a MASTER_IP.
# If you need to specify a port that's not the default (443), add it to MASTER_IP.
#
# Example: Connect to the Master on the secure port 6443
# MASTER_IP=192.168.122.5:6443
#
MASTER_IP="${MASTER_IP:-}"
# The container registry and project given to the kubemark container:
# $CONTAINER_REGISTRY/$PROJECT/kubemark
#
CONTAINER_REGISTRY="${CONTAINER_REGISTRY:-}"
PROJECT="${PROJECT:-}"
NUM_NODES="${NUM_NODES:-1}"
TEST_CLUSTER_API_CONTENT_TYPE="${TEST_CLUSTER_API_CONTENT_TYPE:-}"
KUBELET_TEST_LOG_LEVEL="${KUBELET_TEST_LOG_LEVEL:-}"
KUBEPROXY_TEST_LOG_LEVEL="${KUBEPROXY_TEST_LOG_LEVEL:-}"
MASTER_NAME="${MASTER_NAME:-}"
USE_REAL_PROXIER="${USE_REAL_PROXIER:-true}"

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#!/bin/bash
# Copyright 2017 The Kubernetes Authors.
#
# 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.
# A library of helper functions for landing kubemark containers on a
# pre-existing Kubernetes master. See test/kubemark/pre-existing/README.md
# for me details on using a pre-existing provider.
KUBE_ROOT=$(dirname "${BASH_SOURCE}")/../..
source "${KUBE_ROOT}/cluster/common.sh"
source "${KUBE_ROOT}/hack/lib/util.sh"
function detect-project() {
if [[ -z "${MASTER_IP:-}" ]]; then
echo "Set 'MASTER_IP' to the instance assigned to be the Kubernetes master" 1>&2
exit 1
fi
if [[ -z "${PROJECT:-}" ]]; then
echo "Set 'PROJECT' to the name of the container project: $CONTAINER_REGISTRY/$PROJECT/kubemark" >&2
exit 1
fi
if [[ -z "${SERVICE_CLUSTER_IP_RANGE:-}" ]]; then
cluster_range=$(echo "${MASTER_IP}" | awk -F '.' '{printf("%d.%d.%d.0", $1, $2, $3)}')
SERVICE_CLUSTER_IP_RANGE="${SERVICE_CLUSTER_IP_RANGE:-$cluster_range/16}"
fi
}
function create-certs {
rm /tmp/kubeconfig
execute-cmd-on-pre-existing-master-with-retries "sudo cat /etc/kubernetes/admin.conf" > /tmp/kubeconfig
CA_CERT_BASE64=$(cat /tmp/kubeconfig | grep certificate-authority | awk '{print $2}' | head -n 1)
KUBELET_CERT_BASE64=$(cat /tmp/kubeconfig | grep client-certificate-data | awk '{print $2}' | head -n 1)
KUBELET_KEY_BASE64=$(cat /tmp/kubeconfig | grep client-key-data | awk '{print $2}' | head -n 1)
# Local kubeconfig.kubemark vars
KUBECFG_CERT_BASE64="${KUBELET_CERT_BASE64}"
KUBECFG_KEY_BASE64="${KUBELET_KEY_BASE64}"
# The pre-existing Kubernetes master already has these setup
# Set these vars but don't use them
CA_KEY_BASE64=$(dd if=/dev/urandom bs=128 count=1 2>/dev/null | base64 | tr -d "=+/" | dd bs=32 count=1 2>/dev/null)
MASTER_CERT_BASE64=$(dd if=/dev/urandom bs=128 count=1 2>/dev/null | base64 | tr -d "=+/" | dd bs=32 count=1 2>/dev/null)
MASTER_KEY_BASE64=$(dd if=/dev/urandom bs=128 count=1 2>/dev/null | base64 | tr -d "=+/" | dd bs=32 count=1 2>/dev/null)
KUBEAPISERVER_CERT_BASE64=$(dd if=/dev/urandom bs=128 count=1 2>/dev/null | base64 | tr -d "=+/" | dd bs=32 count=1 2>/dev/null)
KUBEAPISERVER_KEY_BASE64=$(dd if=/dev/urandom bs=128 count=1 2>/dev/null | base64 | tr -d "=+/" | dd bs=32 count=1 2>/dev/null)
}

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#!/bin/bash
# Copyright 2017 The Kubernetes Authors.
#
# 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.
# Running cmd $RETRIES times in case of failures.
function run-cmd-with-retries {
RETRIES="${RETRIES:-3}"
for attempt in $(seq 1 ${RETRIES}); do
exec 5>&1 # Duplicate &1 to &5 for use below.
# We don't use 'local' to declare result as then ret_val always gets value 0.
# We use tee to output to &5 (redirected to stdout) while also storing it in the variable.
result=$("$@" 2>&1 | tee >(cat - >&5)) || local ret_val="$?"
if [[ "${ret_val:-0}" -ne "0" ]]; then
if [[ $(echo "${result}" | grep -c "already exists") -gt 0 ]]; then
if [[ "${attempt}" == 1 ]]; then
echo -e "${color_red}Failed to $1 $2 $3 as the resource hasn't been deleted from a previous run.${color_norm}" >& 2
exit 1
fi
echo -e "${color_yellow}Succeeded to $1 $2 $3 in the previous attempt, but status response wasn't received.${color_norm}"
return 0
fi
echo -e "${color_yellow}Attempt $attempt failed to $1 $2 $3. Retrying.${color_norm}" >& 2
sleep $(($attempt * 5))
else
echo -e "${color_green}Succeeded to $1 $2 $3.${color_norm}"
return 0
fi
done
echo -e "${color_red}Failed to $1 $2 $3.${color_norm}" >& 2
exit 1
}

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# See the License for the specific language governing permissions and
# limitations under the License.
KUBE_ROOT=$(dirname "${BASH_SOURCE}")/../../..
source "${KUBE_ROOT}/test/kubemark/common/util.sh"
# Wrapper for gcloud compute, running it $RETRIES times in case of failures.
# Args:
# $@: all stuff that goes after 'gcloud compute'
function run-gcloud-compute-with-retries {
RETRIES="${RETRIES:-3}"
for attempt in $(seq 1 ${RETRIES}); do
exec 5>&1 # Duplicate &1 to &5 for use below.
# We don't use 'local' to declare gcloud_result as then ret_val always gets value 0.
# We use tee to output to &5 (redirected to stdout) while also storing it in the variable.
gcloud_result=$(gcloud compute "$@" 2>&1 | tee >(cat - >&5)) || local ret_val="$?"
if [[ "${ret_val:-0}" -ne "0" ]]; then
if [[ $(echo "${gcloud_result}" | grep -c "already exists") -gt 0 ]]; then
if [[ "${attempt}" == 1 ]]; then
echo -e "${color_red}Failed to $1 $2 $3 as the resource hasn't been deleted from a previous run.${color_norm}" >& 2
exit 1
fi
echo -e "${color_yellow}Succeeded to $1 $2 $3 in the previous attempt, but status response wasn't received.${color_norm}"
return 0
fi
echo -e "${color_yellow}Attempt $attempt failed to $1 $2 $3. Retrying.${color_norm}" >& 2
sleep $(($attempt * 5))
else
echo -e "${color_green}Succeeded to gcloud compute $1 $2 $3.${color_norm}"
return 0
fi
done
echo -e "${color_red}Failed to $1 $2 $3.${color_norm}" >& 2
exit 1
run-cmd-with-retries gcloud compute "$@"
}
function create-master-instance-with-resources {

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#!/bin/bash
# Copyright 2017 The Kubernetes Authors.
#
# 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.
KUBE_ROOT=$(dirname "${BASH_SOURCE}")/../../..
source "${KUBE_ROOT}/test/kubemark/common/util.sh"
# Leave the skeleton definition of execute-cmd-on-master-with-retries
# so only the pre-existing provider functions will target this.
function execute-cmd-on-pre-existing-master-with-retries() {
IP_WITHOUT_PORT=$(echo "${MASTER_IP}" | cut -f 1 -d ':') || "${MASTER_IP}"
RETRIES="${2:-1}" run-cmd-with-retries ssh kubernetes@"${IP_WITHOUT_PORT}" $1
}