/
kubectl.sh
executable file
·133 lines (122 loc) · 3.8 KB
/
kubectl.sh
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#!/bin/bash
# Copyright 2014 Google Inc. All rights reserved.
#
# 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.
set -o errexit
set -o nounset
set -o pipefail
KUBE_ROOT=$(dirname "${BASH_SOURCE}")/..
source "${KUBE_ROOT}/cluster/kube-env.sh"
UTILS=${KUBE_ROOT}/cluster/${KUBERNETES_PROVIDER}/util.sh
if [ -f ${UTILS} ]; then
source "${UTILS}"
fi
# Get the absolute path of the directory component of a file, i.e. the
# absolute path of the dirname of $1.
get_absolute_dirname() {
echo "$(cd "$(dirname "$1")" && pwd)"
}
# Detect the OS name/arch so that we can find our binary
case "$(uname -s)" in
Darwin)
host_os=darwin
;;
Linux)
host_os=linux
;;
*)
echo "Unsupported host OS. Must be Linux or Mac OS X." >&2
exit 1
;;
esac
case "$(uname -m)" in
x86_64*)
host_arch=amd64
;;
i?86_64*)
host_arch=amd64
;;
amd64*)
host_arch=amd64
;;
arm*)
host_arch=arm
;;
i?86*)
host_arch=x86
;;
*)
echo "Unsupported host arch. Must be x86_64, 386 or arm." >&2
exit 1
;;
esac
# If KUBECTL_PATH isn't set, gather up the list of likely places and use ls
# to find the latest one.
if [[ -z "${KUBECTL_PATH:-}" ]]; then
locations=(
"${KUBE_ROOT}/_output/dockerized/bin/${host_os}/${host_arch}/kubectl"
"${KUBE_ROOT}/_output/local/bin/${host_os}/${host_arch}/kubectl"
"${KUBE_ROOT}/platforms/${host_os}/${host_arch}/kubectl"
)
kubectl=$( (ls -t "${locations[@]}" 2>/dev/null || true) | head -1 )
if [[ ! -x "$kubectl" ]]; then
{
echo "It looks as if you don't have a compiled kubectl binary"
echo
echo "If you are running from a clone of the git repo, please run"
echo "'./build/run.sh hack/build-cross.sh'. Note that this requires having"
echo "Docker installed."
echo
echo "If you are running from a binary release tarball, something is wrong. "
echo "Look at http://kubernetes.io/ for information on how to contact the "
echo "development team for help."
} >&2
exit 1
fi
elif [[ ! -x "${KUBECTL_PATH}" ]]; then
{
echo "KUBECTL_PATH environment variable set to '${KUBECTL_PATH}', but "
echo "this doesn't seem to be a valid executable."
} >&2
exit 1
fi
kubectl="${KUBECTL_PATH:-${kubectl}}"
# While GKE requires the kubectl binary, it's actually called through
# gcloud. But we need to adjust the PATH so gcloud gets the right one.
if [[ "$KUBERNETES_PROVIDER" == "gke" ]]; then
detect-project &> /dev/null
export PATH=$(get_absolute_dirname $kubectl):$PATH
kubectl="${GCLOUD}"
# GKE runs kubectl through gcloud.
config=(
"alpha"
"container"
"kubectl"
"--project=${PROJECT}"
"--zone=${ZONE}"
"--cluster=${CLUSTER_NAME}"
)
elif [[ "$KUBERNETES_PROVIDER" == "vagrant" ]]; then
# When we are using vagrant it has hard coded kubeconfig, and do not clobber public endpoints
config=(
"--kubeconfig=$HOME/.kubernetes_vagrant_kubeconfig"
)
elif [[ "$KUBERNETES_PROVIDER" == "libvirt-coreos" ]]; then
detect-master > /dev/null
config=(
"--server=http://${KUBE_MASTER_IP}:8080"
)
fi
echo "current-context: \"$(${kubectl} "${config[@]:+${config[@]}}" config view -o template --template='{{index . "current-context"}}')\"" >&2
echo "Running:" "${kubectl}" "${config[@]:+${config[@]}}" "${@+$@}" >&2
"${kubectl}" "${config[@]:+${config[@]}}" "${@+$@}"