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ci: fix psp issue in minikube latest version

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With minikube versions greater than 1.6.2 and less than 1.11.1, the YAML files
minikube path will not be automatically applied to the cluster. we will get
errors during bootstrap of the cluster if the admission controller is enabled.

To use Pod Security Policies with these versions of minikube, first start a
cluster without the `PodSecurityPolicy` admission controller enabled.

Next, apply the psp yaml. and stop the cluster and then restart it
with the admission controller enabled.

```
minikube start
kubectl apply -f /path/to/psp.yaml
minikube stop
minikube start --extra-config=apiserver.enable-admission-plugins=PodSecurityPolicy
```

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
This commit is contained in:
Madhu Rajanna 2020-07-08 07:52:49 +05:30 committed by mergify[bot]
parent 8aae7b553c
commit f05c9a6a93
1 changed files with 35 additions and 4 deletions
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35
scripts/minikube.sh
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@ -28,6 +28,14 @@ function copy_image_to_cluster() {
docker save "${build_image}" | (eval "$(minikube docker-env --shell bash)" && docker load && docker tag "${build_image}" "${final_image}")
}
# parse the minikube version, return the digit passed as argument
# v1.11.0 -> minikube_version 1 -> 1
# v1.11.0 -> minikube_version 2 -> 11
# v1.11.0 -> minikube_version 3 -> 0
minikube_version() {
echo "${MINIKUBE_VERSION}" | sed 's/^v//' | cut -d'.' -f"${1}"
}
# install minikube
function install_minikube() {
if type minikube >/dev/null 2>&1; then
@ -95,6 +103,19 @@ EXTRA_CONFIG="${EXTRA_CONFIG} --extra-config=kubelet.resolv-conf=${RESOLV_CONF}"
#extra Rook configuration
ROOK_BLOCK_POOL_NAME=${ROOK_BLOCK_POOL_NAME:-"newrbdpool"}
function minikube_supports_psp() {
local MINIKUBE_MAJOR
local MINIKUBE_MINOR
local MINIKUBE_PATCH
MINIKUBE_MAJOR=$(minikube_version 1)
MINIKUBE_MINOR=$(minikube_version 2)
MINIKUBE_PATCH=$(minikube_version 3)
if [[ "${MINIKUBE_MAJOR}" -ge 1 ]] && [[ "${MINIKUBE_MINOR}" -ge 11 ]] && [[ "${MINIKUBE_PATCH}" -ge 1 ]] || [[ "${MINIKUBE_MAJOR}" -ge 1 ]] && [[ "${MINIKUBE_MINOR}" -ge 12 ]]; then
return 1
fi
return 0
}
case "${1:-}" in
up)
install_minikube
@ -104,11 +125,21 @@ up)
install_kubectl
fi
enable_psp
echo "starting minikube with kubeadm bootstrapper"
if minikube_supports_psp; then
enable_psp
# shellcheck disable=SC2086
minikube start --memory="${MEMORY}" -b kubeadm --kubernetes-version="${KUBE_VERSION}" --vm-driver="${VM_DRIVER}" --feature-gates="${K8S_FEATURE_GATES}" ${EXTRA_CONFIG}
else
# This is a workaround to fix psp issues in minikube >1.6.2 and <1.11.0
# shellcheck disable=SC2086
minikube start --memory="${MEMORY}" -b kubeadm --kubernetes-version="${KUBE_VERSION}" --vm-driver="${VM_DRIVER}" --feature-gates="${K8S_FEATURE_GATES}"
DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)"
kubectl apply -f "$DIR"/psp.yaml
minikube stop
# shellcheck disable=SC2086
minikube start --memory="${MEMORY}" -b kubeadm --kubernetes-version="${KUBE_VERSION}" --vm-driver="${VM_DRIVER}" --feature-gates="${K8S_FEATURE_GATES}" ${EXTRA_CONFIG}
fi
# create a link so the default dataDirHostPath will work for this
# environment