9e015fd216
When no args are passed to a script, "$@" is unset, which causes a shell error in "nounset" mode. This change passes an empty string to kubectl in that case so it can print help.
133 lines
3.7 KiB
Bash
Executable File
133 lines
3.7 KiB
Bash
Executable File
#!/bin/bash
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# Copyright 2014 Google Inc. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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set -o errexit
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set -o nounset
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set -o pipefail
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KUBE_ROOT=$(dirname "${BASH_SOURCE}")/..
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source "${KUBE_ROOT}/cluster/kube-env.sh"
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source "${KUBE_ROOT}/cluster/${KUBERNETES_PROVIDER}/util.sh"
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# Get the absolute path of the directory component of a file, i.e. the
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# absolute path of the dirname of $1.
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get_absolute_dirname() {
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echo "$(cd "$(dirname "$1")" && pwd)"
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}
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# Detect the OS name/arch so that we can find our binary
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case "$(uname -s)" in
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Darwin)
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host_os=darwin
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;;
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Linux)
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host_os=linux
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;;
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*)
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echo "Unsupported host OS. Must be Linux or Mac OS X." >&2
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exit 1
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;;
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esac
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case "$(uname -m)" in
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x86_64*)
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host_arch=amd64
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;;
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i?86_64*)
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host_arch=amd64
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;;
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amd64*)
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host_arch=amd64
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;;
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arm*)
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host_arch=arm
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;;
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i?86*)
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host_arch=x86
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;;
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*)
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echo "Unsupported host arch. Must be x86_64, 386 or arm." >&2
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exit 1
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;;
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esac
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# If KUBECTL_PATH isn't set, gather up the list of likely places and use ls
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# to find the latest one.
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if [[ -z "${KUBECTL_PATH:-}" ]]; then
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locations=(
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"${KUBE_ROOT}/_output/dockerized/bin/${host_os}/${host_arch}/kubectl"
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"${KUBE_ROOT}/_output/local/bin/${host_os}/${host_arch}/kubectl"
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"${KUBE_ROOT}/platforms/${host_os}/${host_arch}/kubectl"
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)
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kubectl=$( (ls -t "${locations[@]}" 2>/dev/null || true) | head -1 )
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if [[ ! -x "$kubectl" ]]; then
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{
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echo "It looks as if you don't have a compiled kubectl binary"
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echo
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echo "If you are running from a clone of the git repo, please run"
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echo "'./build/run.sh hack/build-cross.sh'. Note that this requires having"
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echo "Docker installed."
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echo
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echo "If you are running from a binary release tarball, something is wrong. "
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echo "Look at http://kubernetes.io/ for information on how to contact the "
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echo "development team for help."
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} >&2
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exit 1
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fi
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elif [[ ! -x "${KUBECTL_PATH}" ]]; then
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{
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echo "KUBECTL_PATH environment variable set to '${KUBECTL_PATH}', but "
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echo "this doesn't seem to be a valid executable."
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} >&2
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exit 1
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fi
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kubectl="${KUBECTL_PATH:-${kubectl}}"
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# While GKE requires the kubectl binary, it's actually called through
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# gcloud. But we need to adjust the PATH so gcloud gets the right one.
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if [[ "$KUBERNETES_PROVIDER" == "gke" ]]; then
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detect-project &> /dev/null
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export PATH=$(get_absolute_dirname $kubectl):$PATH
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kubectl="${GCLOUD}"
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fi
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if [[ "$KUBERNETES_PROVIDER" == "vagrant" ]]; then
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# When we are using vagrant it has hard coded auth. We repeat that here so that
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# we don't clobber auth that might be used for a publicly facing cluster.
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config=(
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"--auth-path=$HOME/.kubernetes_vagrant_auth"
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)
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elif [[ "${KUBERNETES_PROVIDER}" == "gke" ]]; then
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# GKE runs kubectl through gcloud.
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config=(
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"preview"
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"container"
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"kubectl"
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"--project=${PROJECT}"
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"--zone=${ZONE}"
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"--cluster=${CLUSTER_NAME}"
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)
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fi
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detect-master > /dev/null
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if [[ -n "${KUBE_MASTER_IP-}" && -z "${KUBERNETES_MASTER-}" ]]; then
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export KUBERNETES_MASTER=https://${KUBE_MASTER_IP}
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fi
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echo "Running:" "${kubectl}" "${config[@]:+${config[@]}}" "${@+$@}" >&2
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"${kubectl}" "${config[@]:+${config[@]}}" "${@+$@}"
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