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fake-k8s.sh
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#!/usr/bin/env bash
# initialize the global variables
function init_global_flags() {
echo "WARNNING: This script is no longer maintained, please migrate the refactored binary"
echo " https://github.com/wzshiming/fake-k8s/releases"
PROJECT_NAME="fake-k8s"
TMPDIR="${TMPDIR:-/tmp}/${PROJECT_NAME}"
TMPDIR="${TMPDIR//\/\//\/}"
RUNTIME="${RUNTIME:-$(detection_runtime)}"
MOCK="${MOCK:-}"
if [[ "${MOCK}" != "" ]]; then
GENERATE_REPLICAS="${GENERATE_REPLICAS:-0}"
else
GENERATE_REPLICAS="${GENERATE_REPLICAS:-5}"
fi
GENERATE_NODE_NAME="${GENERATE_NODE_NAME:-fake-}"
NODE_NAME="${NODE_NAME:-}"
PROMETHEUS_PORT="${PROMETHEUS_PORT:-0}"
FAKE_VERSION="${FAKE_VERSION:-v0.6.0}"
KUBE_VERSION="${KUBE_VERSION:-v1.19.16}"
ETCD_VERSION="${ETCD_VERSION:-$(get_etcd_version "${KUBE_VERSION}")}"
PROMETHEUS_VERSION="${PROMETHEUS_VERSION:-v2.35.0}"
# kubernetes v1.20 secure port must be enabled
if [[ "$(get_release_version "${KUBE_VERSION}")" -ge "20" ]]; then
SECURE_PORT="${SECURE_PORT:-true}"
else
SECURE_PORT="${SECURE_PORT:-false}"
fi
QUIET_PULL="${QUIET_PULL:-false}"
KUBE_IMAGE_PREFIX="${KUBE_IMAGE_PREFIX:-k8s.gcr.io}"
FAKE_IMAGE_PREFIX="${FAKE_IMAGE_PREFIX:-ghcr.io/wzshiming/fake-kubelet}"
PROMETHEUS_IMAGE_PREFIX="${PROMETHEUS_IMAGE_PREFIX:-docker.io/prom}"
IMAGE_ETCD="${IMAGE_ETCD:-${KUBE_IMAGE_PREFIX}/etcd:${ETCD_VERSION}}"
IMAGE_KUBE_APISERVER="${IMAGE_KUBE_APISERVER:-${KUBE_IMAGE_PREFIX}/kube-apiserver:${KUBE_VERSION}}"
IMAGE_KUBE_CONTROLLER_MANAGER="${IMAGE_KUBE_CONTROLLER_MANAGER:-${KUBE_IMAGE_PREFIX}/kube-controller-manager:${KUBE_VERSION}}"
IMAGE_KUBE_SCHEDULER="${IMAGE_KUBE_SCHEDULER:-${KUBE_IMAGE_PREFIX}/kube-scheduler:${KUBE_VERSION}}"
IMAGE_FAKE_KUBELET="${IMAGE_FAKE_KUBELET:-${FAKE_IMAGE_PREFIX}/fake-kubelet:${FAKE_VERSION}}"
IMAGE_PROMETHEUS="${IMAGE_PROMETHEUS:-${PROMETHEUS_IMAGE_PREFIX}/prometheus:${PROMETHEUS_VERSION}}"
}
# Etcd version of each kubernetes version
declare -A etcd_versions=(
["8"]="3.0.17"
["9"]="3.1.12"
["10"]="3.1.12"
["11"]="3.2.18"
["12"]="3.2.24"
["13"]="3.2.24"
["14"]="3.3.10"
["15"]="3.3.10"
["16"]="3.3.17-0"
["17"]="3.4.3-0"
["18"]="3.4.3-0"
["19"]="3.4.13-0"
["20"]="3.4.13-0"
["21"]="3.4.13-0"
["22"]="3.5.1-0"
["23"]="3.5.1-0"
["24"]="3.5.1-0"
)
# get the etcd version of kubernetes version
function get_etcd_version() {
local kube_version="${1}"
local release_version
local etcd_version
release_version="$(get_release_version "${kube_version}")"
if [[ "${release_version}" -gt "24" ]]; then
etcd_version="3.5.1-0"
elif [[ "${release_version}" -lt "8" ]]; then
etcd_version="3.0.17"
else
etcd_version="${etcd_versions[${release_version}]}"
fi
echo "${etcd_version}"
}
# check command exists
function command_exist() {
local command="${1}"
type "${command}" >/dev/null 2>&1
}
# check the string is true
function is_true() {
local bool="${1}"
case "${bool}" in
T* | t* | Y* | y* | 1 | on)
return 0
;;
F* | f* | N* | n* | 0 | off)
return 1
;;
*)
return 2
;;
esac
}
# get unused local port
function unusad_port() {
local low_bound=45536
local range=20000
local candidate
local i
for ((i = 0; i < 10; i++)); do
candidate="$((low_bound + (RANDOM % range)))"
# just works on bash
if ! (echo "" >/dev/tcp/127.0.0.1/${candidate}) >/dev/null 2>&1; then
echo ${candidate}
return 0
fi
done
for ((i = 0; i < "${range}"; i++)); do
candidate="$((low_bound + i))"
# just works on bash
if ! (echo "" >/dev/tcp/127.0.0.1/${candidate}) >/dev/null 2>&1; then
echo ${candidate}
return 0
fi
done
# fallback to low_bound - 1 port if no unusad port is available
echo "$((low_bound - 1))"
}
# get the minor of version
function get_release_version() {
local version="${1}"
local release_version
release_version="${version#*.}"
release_version="${release_version%%.*}"
echo "${release_version}"
}
# build the kubeconfig file with the given context
function build_kubeconfig() {
local address="${1}"
local admin_crt_path="${2}"
local admin_key_path="${3}"
local ca_crt_path="${4}"
cat <<EOF
apiVersion: v1
kind: Config
preferences: {}
current-context: ${PROJECT_NAME}
clusters:
- name: ${PROJECT_NAME}
cluster:
server: ${address}
EOF
if [[ "${admin_key_path}" != "" ]]; then
cat <<EOF
insecure-skip-tls-verify: true
# certificate-authority-data: $(base64 <"${ca_crt_path}" | tr -d '\n')
EOF
fi
cat <<EOF
contexts:
- name: ${PROJECT_NAME}
context:
cluster: ${PROJECT_NAME}
EOF
if [[ "${admin_key_path}" != "" ]]; then
cat <<EOF
user: ${PROJECT_NAME}
users:
- name: ${PROJECT_NAME}
user:
client-certificate-data: $(base64 <"${admin_crt_path}" | tr -d '\n')
client-key-data: $(base64 <"${admin_key_path}" | tr -d '\n')
EOF
fi
}
# build prometheus config file with given context
function build_prometheus_config() {
local name="${1}"
local secure="${2}"
local admin_crt_path="/etc/kubernetes/pki/admin.crt"
local admin_key_path="/etc/kubernetes/pki/admin.key"
local ca_crt_path="/etc/kubernetes/pki/ca.crt"
cat <<EOF
global:
scrape_interval: 15s
scrape_timeout: 10s
evaluation_interval: 15s
alerting:
alertmanagers:
- follow_redirects: true
enable_http2: true
scheme: http
timeout: 10s
api_version: v2
static_configs:
- targets: []
scrape_configs:
- job_name: "prometheus"
scheme: http
honor_timestamps: true
metrics_path: /metrics
follow_redirects: true
enable_http2: true
static_configs:
- targets:
- localhost:9090
- job_name: "etcd"
scheme: http
honor_timestamps: true
metrics_path: /metrics
follow_redirects: true
enable_http2: true
static_configs:
- targets:
- "${name}-etcd:2379"
- job_name: "fake-kubelet"
scheme: http
honor_timestamps: true
metrics_path: /metrics
follow_redirects: true
enable_http2: true
static_configs:
- targets:
- "${name}-fake-kubelet:8080"
EOF
if is_true "${secure}"; then
cat <<EOF
- job_name: "kube-apiserver"
scheme: https
honor_timestamps: true
metrics_path: /metrics
follow_redirects: true
enable_http2: true
tls_config:
cert_file: "${admin_crt_path}"
key_file: "${admin_key_path}"
insecure_skip_verify: true
static_configs:
- targets:
- "${name}-kube-apiserver:6443"
- job_name: "kube-controller-manager"
scheme: https
honor_timestamps: true
metrics_path: /metrics
follow_redirects: true
enable_http2: true
tls_config:
cert_file: "${admin_crt_path}"
key_file: "${admin_key_path}"
insecure_skip_verify: true
static_configs:
- targets:
- "${name}-kube-controller-manager:10257"
- job_name: "kube-scheduler"
scheme: https
honor_timestamps: true
metrics_path: /metrics
follow_redirects: true
enable_http2: true
tls_config:
cert_file: "${admin_crt_path}"
key_file: "${admin_key_path}"
insecure_skip_verify: true
static_configs:
- targets:
- "${name}-kube-scheduler:10259"
EOF
else
cat <<EOF
- job_name: "kube-apiserver"
scheme: http
honor_timestamps: true
metrics_path: /metrics
follow_redirects: true
enable_http2: true
static_configs:
- targets:
- "${name}-kube-apiserver:8080"
- job_name: "kube-controller-manager"
scheme: http
honor_timestamps: true
metrics_path: /metrics
follow_redirects: true
enable_http2: true
static_configs:
- targets:
- "${name}-kube-controller-manager:10252"
- job_name: "kube-scheduler"
scheme: http
honor_timestamps: true
metrics_path: /metrics
follow_redirects: true
enable_http2: true
static_configs:
- targets:
- "${name}-kube-scheduler:10251"
EOF
fi
}
# build the docker-compose file with the given context
function build_compose() {
local name="${1}"
local port="${2}"
local kubeconfig_path="${3}"
local etcd_data="${4}"
local admin_crt_path="${5}"
local admin_key_path="${6}"
local ca_crt_path="${7}"
local prometheus_path="${8}"
cat <<EOF
version: "3.1"
services:
EOF
# Prometheus
if [[ "${prometheus_path}" != "" ]]; then
cat <<EOF
prometheus:
container_name: "${name}-prometheus"
image: ${IMAGE_PROMETHEUS}
restart: unless-stopped
links:
- kube_controller_manager
- kube_scheduler
- kube_apiserver
- etcd
- fake_kubelet
command:
- --config.file
- /etc/prometheus/prometheus.yml
ports:
- 9090:9090
configs:
- source: prometheus
target: /etc/prometheus/prometheus.yml
EOF
if [[ "${admin_key_path}" != "" ]]; then
cat <<EOF
- source: admin-crt
target: /etc/kubernetes/pki/admin.crt
- source: admin-key
target: /etc/kubernetes/pki/admin.key
- source: ca-crt
target: /etc/kubernetes/pki/ca.crt
EOF
fi
fi
# Etcd
cat <<EOF
etcd:
container_name: "${name}-etcd"
image: ${IMAGE_ETCD}
restart: unless-stopped
command:
- etcd
- --data-dir
- /etcd-data
- --name
- node0
- --initial-advertise-peer-urls
- http://0.0.0.0:2380
- --listen-peer-urls
- http://0.0.0.0:2380
- --advertise-client-urls
- http://0.0.0.0:2379
- --listen-client-urls
- http://0.0.0.0:2379
- --initial-cluster
- node0=http://0.0.0.0:2380
volumes:
- ${etcd_data}:/etcd-data:rw
EOF
# Kube-apiserver
cat <<EOF
kube_apiserver:
container_name: "${name}-kube-apiserver"
image: ${IMAGE_KUBE_APISERVER}
restart: unless-stopped
links:
- etcd
ports:
EOF
if [[ "${admin_key_path}" != "" ]]; then
cat <<EOF
- ${port}:6443
EOF
else
cat <<EOF
- ${port}:8080
EOF
fi
cat <<EOF
command:
- kube-apiserver
- --admission-control
- ""
- --etcd-servers
- http://${name}-etcd:2379
- --etcd-prefix
- /prefix/registry
- --default-watch-cache-size
- "10000"
- --allow-privileged
EOF
if [[ "${admin_key_path}" != "" ]]; then
cat <<EOF
- --bind-address
- 0.0.0.0
- --secure-port
- "6443"
- --tls-cert-file
- /etc/kubernetes/pki/admin.crt
- --tls-private-key-file
- /etc/kubernetes/pki/admin.key
- --client-ca-file
- /etc/kubernetes/pki/ca.crt
- --service-account-key-file
- /etc/kubernetes/pki/admin.key
- --service-account-signing-key-file
- /etc/kubernetes/pki/admin.key
- --service-account-issuer
- https://kubernetes.default.svc.cluster.local
configs:
- source: admin-crt
target: /etc/kubernetes/pki/admin.crt
- source: admin-key
target: /etc/kubernetes/pki/admin.key
- source: ca-crt
target: /etc/kubernetes/pki/ca.crt
EOF
else
cat <<EOF
- --insecure-bind-address
- 0.0.0.0
- --insecure-port
- "8080"
EOF
fi
# Kube-controller-manager
cat <<EOF
kube_controller_manager:
container_name: "${name}-kube-controller-manager"
image: ${IMAGE_KUBE_CONTROLLER_MANAGER}
restart: unless-stopped
links:
- kube_apiserver
command:
- kube-controller-manager
- --kubeconfig
- /root/.kube/config
EOF
if [[ "${prometheus_path}" != "" ]]; then
if [[ "${admin_key_path}" != "" ]]; then
cat <<EOF
- --bind-address
- 0.0.0.0
- --secure-port
- "10257"
- --authorization-always-allow-paths
- /healthz,/metrics
EOF
else
cat <<EOF
- --address
- 0.0.0.0
- --port
- "10252"
EOF
fi
fi
cat <<EOF
configs:
- source: kubeconfig
target: /root/.kube/config
EOF
# Kube-scheduler
cat <<EOF
kube_scheduler:
container_name: "${name}-kube-scheduler"
image: ${IMAGE_KUBE_SCHEDULER}
restart: unless-stopped
links:
- kube_apiserver
command:
- kube-scheduler
- --kubeconfig
- /root/.kube/config
EOF
if [[ "${prometheus_path}" != "" ]]; then
if [[ "${admin_key_path}" != "" ]]; then
cat <<EOF
- --bind-address
- 0.0.0.0
- --secure-port
- "10259"
- --authorization-always-allow-paths
- /healthz,/metrics
EOF
else
cat <<EOF
- --address
- 0.0.0.0
- --port
- "10251"
EOF
fi
fi
cat <<EOF
configs:
- source: kubeconfig
target: /root/.kube/config
EOF
# Fake-kubelet
cat <<EOF
fake_kubelet:
container_name: "${name}-fake-kubelet"
image: ${IMAGE_FAKE_KUBELET}
restart: unless-stopped
command:
- --kubeconfig
- /root/.kube/config
links:
- kube_apiserver
configs:
- source: kubeconfig
target: /root/.kube/config
environment:
TAKE_OVER_ALL: "true"
NODE_NAME: "${NODE_NAME}"
GENERATE_NODE_NAME: "${GENERATE_NODE_NAME}"
GENERATE_REPLICAS: "${GENERATE_REPLICAS}"
CIDR: 10.0.0.1/24
NODE_TEMPLATE: |-
apiVersion: v1
kind: Node
metadata:
annotations:
node.alpha.kubernetes.io/ttl: "0"
labels:
app: fake-kubelet
beta.kubernetes.io/arch: amd64
beta.kubernetes.io/os: linux
kubernetes.io/arch: amd64
kubernetes.io/hostname: {{ .metadata.name }}
kubernetes.io/os: linux
kubernetes.io/role: agent
node-role.kubernetes.io/agent: ""
type: fake-kubelet
name: {{ .metadata.name }}
NODE_INITIALIZATION_TEMPLATE: |-
{{ with .status }}
addresses:
{{ with .addresses }}
{{ YAML . 1 }}
{{ else }}
- address: {{ NodeIP }}
type: InternalIP
{{ end }}
allocatable:
{{ with .allocatable }}
{{ YAML . 1 }}
{{ else }}
cpu: 1k
memory: 1Ti
pods: 1M
{{ end }}
capacity:
{{ with .capacity }}
{{ YAML . 1 }}
{{ else }}
cpu: 1k
memory: 1Ti
pods: 1M
{{ end }}
{{ with .nodeInfo }}
nodeInfo:
architecture: {{ with .architecture }} {{ . }} {{ else }} "amd64" {{ end }}
bootID: {{ with .bootID }} {{ . }} {{ else }} "" {{ end }}
containerRuntimeVersion: {{ with .containerRuntimeVersion }} {{ . }} {{ else }} "" {{ end }}
kernelVersion: {{ with .kernelVersion }} {{ . }} {{ else }} "" {{ end }}
kubeProxyVersion: {{ with .kubeProxyVersion }} {{ . }} {{ else }} "fake" {{ end }}
kubeletVersion: {{ with .kubeletVersion }} {{ . }} {{ else }} "fake" {{ end }}
machineID: {{ with .machineID }} {{ . }} {{ else }} "" {{ end }}
operatingSystem: {{ with .operatingSystem }} {{ . }} {{ else }} "linux" {{ end }}
osImage: {{ with .osImage }} {{ . }} {{ else }} "" {{ end }}
systemUUID: {{ with .osImage }} {{ . }} {{ else }} "" {{ end }}
{{ end }}
phase: Running
{{ end }}
EOF
if [[ "${prometheus_path}" != "" ]]; then
cat <<EOF
SERVER_ADDRESS: :8080
EOF
fi
# Config files
cat <<EOF
configs:
kubeconfig:
file: ${kubeconfig_path}
EOF
if [[ "${admin_key_path}" != "" ]]; then
cat <<EOF
admin-crt:
file: ${admin_crt_path}
admin-key:
file: ${admin_key_path}
ca-crt:
file: ${ca_crt_path}
EOF
fi
if [[ "${prometheus_path}" != "" ]]; then
cat <<EOF
prometheus:
file: ${prometheus_path}
EOF
fi
# Network
cat <<EOF
networks:
default:
name: ${name}
EOF
}
# Generate the certificates for the kube-apiserver.
function gen_cert() {
local dir="${1}"
local admin_crt_path="${dir}/admin.crt"
local admin_key_path="${dir}/admin.key"
local admin_csr_path="${dir}/admin.csr"
local ca_crt_path="${dir}/ca.crt"
local ca_key_path="${dir}/ca.key"
local openssl_conf_path="${dir}/openssl.cnf"
# Generate the ca private key and certificate.
if [[ ! -f "${ca_key_path}" ]]; then
openssl genrsa -out "${ca_key_path}" 2048
fi
if [[ ! -f "${ca_crt_path}" ]]; then
openssl req -sha256 -x509 -new -nodes -key "${ca_key_path}" -subj "/CN=fake-ca" -out "${ca_crt_path}" -days 36500
fi
# Generate the admin private key and certificate signing request and sign it with the ca.
if [[ ! -f "${admin_key_path}" ]]; then
openssl genrsa -out "${admin_key_path}" 2048
fi
if [[ ! -f "${admin_crt_path}" ]]; then
if [[ ! -f "${openssl_conf_path}" ]]; then
cat <<EOF >"${openssl_conf_path}"
[req]
req_extensions = v3_req
distinguished_name = req_distinguished_name
[req_distinguished_name]
[ v3_req ]
basicConstraints = CA:FALSE
keyUsage = nonRepudiation, digitalSignature, keyEncipherment
subjectAltName = @alt_names
[alt_names]
DNS.1 = kubernetes
DNS.2 = kubernetes.default
DNS.3 = kubernetes.default.svc
DNS.4 = kubernetes.default.svc.cluster.local
IP.1 = 127.0.0.1
EOF
fi
if [[ ! -f "${admin_csr_path}" ]]; then
openssl req -new -key "${admin_key_path}" -subj "/CN=fake-admin" -out "${admin_csr_path}" -config "${openssl_conf_path}"
fi
openssl x509 -sha256 -req -in "${admin_csr_path}" -CA "${ca_crt_path}" -CAkey "${ca_key_path}" -CAcreateserial -out "${admin_crt_path}" -days 36500 -extensions v3_req -extfile "${openssl_conf_path}"
fi
# Because we have no right to read this content in the Prometheus container,
# this is just a local key, it doesn't matter if it is leaked.
chmod 0644 "${dir}"/*.key
}
# set the context in default kubeconfig
function set_default_kubeconfig() {
local name="${1}"
local port="${2}"
local admin_crt_path="${3}"
local admin_key_path="${4}"
local ca_crt_path="${5}"
if [[ "${admin_key_path}" != "" ]]; then
kubectl config set "clusters.${name}.server" "https://127.0.0.1:${port}"
kubectl config set "clusters.${name}.insecure-skip-tls-verify" "true"
# kubectl config set "clusters.${name}.certificate-authority-data" "$(base64 <"${ca_crt_path}" | tr -d '\n')"
kubectl config set "users.${name}.client-certificate-data" "$(base64 <"${admin_crt_path}" | tr -d '\n')"
kubectl config set "users.${name}.client-key-data" "$(base64 <"${admin_key_path}" | tr -d '\n')"
kubectl config set "contexts.${name}.user" "${name}"
kubectl config set "contexts.${name}.cluster" "${name}"
else
kubectl config set "clusters.${name}.server" "http://127.0.0.1:${port}"
kubectl config set "contexts.${name}.cluster" "${name}"
fi
}
# unset the context in default kubeconfig
function unset_default_kubeconfig() {
local name="${1}"
kubectl config delete-context "${name}"
kubectl config delete-cluster "${name}"
kubectl config delete-user "${name}"
}
# detect the runtime for the current system
function detection_runtime() {
if command_exist docker; then
echo docker
elif command_exist nerdctl; then
echo nerdctl
else
echo docker
fi
}
# output logs to stderr
function log() {
echo "${*}" >&2
}
# output error logs to stderr
function error() {
echo "Error: ${*}" >&2
}
# import to cluster from given resource and modify the resource uid
function mock_cluster() {
local kubeconfig="${1}"
local mock="${2}"
local resources
local line_resource
local other_resource
local apply_resource
local next_resource
local resource_old_uid
local resource_uid
local resource_version
local resource_kind
local resource_name
local resource_namespace
# take content from the file or stdin
if [[ "${mock}" == "-" ]]; then
resources="$(cat)"
else
resources="$(cat "${mock}")"
fi
if [[ "$(echo "${resources}" | jq -r '.kind')" == "List" ]]; then
resources="$(echo "${resources}" | jq '.items | .[]')"
fi
resources="$(echo "${resources}" | jq 'select( .kind != "Namespace" or ( .metadata.name != "kube-public" and .metadata.name != "kube-node-lease" and .metadata.name != "kube-system" and .metadata.name != "default" ) )')"
apply_resource="$(echo "${resources}" | jq 'select( .metadata.ownerReferences == null )')"
other_resource="$(echo "${resources}" | jq 'select( .metadata.ownerReferences != null )')"
log "Importing mock data"
while [[ "${apply_resource}" != "" ]]; do
line_resource="$(echo "${apply_resource}" | kubectl --kubeconfig="${kubeconfig}" apply --validate=false --force -f - -o go-template='{{ range .items }}{{ .metadata.uid }} {{ .apiVersion }} {{ .kind }} {{ .metadata.name }} {{ with .metadata.namespace }}{{ . }}{{ end }}{{"\n"}}{{- end }}')"
apply_resource=""
while read -r resource_uid resource_version resource_kind resource_name resource_namespace; do
if [[ "${resource_uid}" == "" ]]; then
continue
fi
log "Imported ${resource_kind} ${resource_name}"
if [[ "${resource_namespace}" == "" ]]; then
next_resource="$(echo "${other_resource}" | jq "select( .metadata.ownerReferences[0].apiVersion == \"${resource_version}\" and .metadata.ownerReferences[0].kind == \"${resource_kind}\" and .metadata.ownerReferences[0].name == \"${resource_name}\" )")"
else
next_resource="$(echo "${other_resource}" | jq "select( .metadata.ownerReferences[0].apiVersion == \"${resource_version}\" and .metadata.ownerReferences[0].kind == \"${resource_kind}\" and .metadata.ownerReferences[0].name == \"${resource_name}\" and .metadata.namespace == \"${resource_namespace}\" )")"
fi
if [[ "${next_resource}" == "" ]]; then
continue
fi
if [[ "${resource_namespace}" == "" ]]; then
other_resource="$(echo "${other_resource}" | jq "select( .metadata.ownerReferences[0].apiVersion != \"${resource_version}\" or .metadata.ownerReferences[0].kind != \"${resource_kind}\" or .metadata.ownerReferences[0].name != \"${resource_name}\" )")"
else
other_resource="$(echo "${other_resource}" | jq "select( .metadata.ownerReferences[0].apiVersion != \"${resource_version}\" or .metadata.ownerReferences[0].kind != \"${resource_kind}\" or .metadata.ownerReferences[0].name != \"${resource_name}\" or .metadata.namespace != \"${resource_namespace}\" )")"
fi
resource_old_uid="$(echo "${next_resource}" | jq -r '.metadata.ownerReferences[0].uid' | head -n 1)"
apply_resource+="${next_resource//${resource_old_uid}/${resource_uid}}"
done < <(echo "${line_resource}")
done
}
# create a cluster
function create_cluster() {
local name="${1}"
local port="${2}"
local full_name="${PROJECT_NAME}-${name}"
local tmpdir="${TMPDIR}/clusters/${name}"
local pkidir="${TMPDIR}/pki"
local etcddir="${tmpdir}/etcd"
local scheme="http"
local incluster_port="8080"
local admin_crt_path=""
local admin_key_path=""
local ca_crt_path=""
local prometheus_path=""
local in_cluster_kubeconfig_path="${tmpdir}/kubeconfig"
local local_kubeconfig_path="${tmpdir}/kubeconfig.yaml"
local docker_compose_path="${tmpdir}/docker-compose.yaml"
local up_args=()
local i
if [[ -f "${local_kubeconfig_path}" ]]; then
log "kubectl --context=${full_name} get node"
kubectl --context="${full_name}" get node >&2
error "Cluster ${name} already exists"
return 1
fi
# Checking dependent Installation
if is_true "${SECURE_PORT}"; then
if ! command_exist openssl; then
error "OpenSSL needs to be installed with --secure-port=true"
return 1
fi
fi
if [[ "${MOCK}" != "" ]]; then
if ! command_exist kubectl; then
error "Kubectl needs to be installed with --mock"
return 1
fi
if ! command_exist jq; then
error "JQ needs to be installed with --mock"
return 1
fi
fi
if [[ "${port}" == "random" || "${port}" == "" ]]; then
port="$(unusad_port)"
fi
mkdir -p "${tmpdir}" "${etcddir}"
if is_true "${SECURE_PORT}"; then
# generate pki
mkdir -p "${pkidir}"
gen_cert "${pkidir}"
admin_crt_path="${pkidir}/admin.crt"
admin_key_path="${pkidir}/admin.key"
ca_crt_path="${pkidir}/ca.crt"
scheme="https"
incluster_port="6443"
fi
# Create in-cluster kubeconfig
build_kubeconfig "${scheme}://${full_name}-kube-apiserver:${incluster_port}" "${admin_crt_path}" "${admin_key_path}" "${ca_crt_path}" >"${in_cluster_kubeconfig_path}"
# Create local kubeconfig
build_kubeconfig "${scheme}://127.0.0.1:${port}" "${admin_crt_path}" "${admin_key_path}" "${ca_crt_path}" >"${local_kubeconfig_path}"
if [[ "${PROMETHEUS_PORT}" -gt 0 ]]; then
# Create cluster prometheus config
build_prometheus_config "${full_name}" "${SECURE_PORT}" >"${tmpdir}/prometheus.yaml"
prometheus_path="${tmpdir}/prometheus.yaml"
fi
# Create cluster compose
build_compose "${full_name}" "${port}" "${in_cluster_kubeconfig_path}" "${etcddir}" "${admin_crt_path}" "${admin_key_path}" "${ca_crt_path}" "${prometheus_path}" >"${docker_compose_path}"
if is_true "${QUIET_PULL}"; then
up_args+=("--quiet-pull")
fi
# Start cluster with compose
"${RUNTIME}" compose -p "${full_name}" -f "${docker_compose_path}" up -d "${up_args[@]}"
if [[ "${?}" != 0 ]]; then
error "Failed create cluster ${name}"
return 1
fi
if command_exist kubectl; then
# Set up default kubeconfig
set_default_kubeconfig "${full_name}" "${port}" "${admin_crt_path}" "${admin_key_path}" "${ca_crt_path}" >/dev/null 2>&1
# Wait for apiserver to be ready
log "kubectl --context=${full_name} get node"
for ((i = 0; i < 10; i++)); do
kubectl --context="${full_name}" get node >/dev/null 2>&1 && break
sleep 1
done
kubectl --context="${full_name}" get node >&2
fi
if [[ "${MOCK}" != "" ]]; then
# Stop kube-controller-manager and import mock data
"${RUNTIME}" stop "${full_name}-kube-controller-manager" >/dev/null 2>&1
mock_cluster "${local_kubeconfig_path}" "${MOCK}"
# Recreate fake-kubelet
build_compose "${full_name}" "${port}" "${in_cluster_kubeconfig_path}" "${etcddir}" "${admin_crt_path}" "${admin_key_path}" "${ca_crt_path}" >"${docker_compose_path}"
# Start cluster with compose
"${RUNTIME}" compose -p "${full_name}" -f "${docker_compose_path}" up -d "${up_args[@]}"
log "kubectl --context=${full_name} get node"
kubectl --context="${full_name}" get node >&2
fi
if ! command_exist kubectl; then
log "kubeconfig is available at ${local_kubeconfig_path}"
fi
log "Created cluster ${name}"
}
# delete a cluster
function delete_cluster() {
local name="${1}"
local tmpdir="${TMPDIR}/clusters/${name}"
local full_name="${PROJECT_NAME}-${name}"
local docker_compose_path="${tmpdir}/docker-compose.yaml"
if command_exist kubectl; then
unset_default_kubeconfig "${full_name}" >/dev/null 2>&1
fi
if [[ -f "${docker_compose_path}" ]]; then
"${RUNTIME}" compose -p "${full_name}" -f "${docker_compose_path}" kill
"${RUNTIME}" compose -p "${full_name}" -f "${docker_compose_path}" down
else
"${RUNTIME}" compose -p "${full_name}" down
fi
rm -rf "${tmpdir}"
log "Deleted cluster ${name}"
}
# list all clusters
function list_cluster() {
for file in "${TMPDIR}"/clusters/*/kubeconfig.yaml; do
if [[ -f "${file}" ]]; then
echo "${file}" | grep -o -e "/\([^/]\+\)/kubeconfig\.yaml$" | sed "s|/kubeconfig.yaml$||" | sed "s|^/||"
fi
done
}
# list all images used by fake cluster
function images() {
echo "${IMAGE_ETCD}"
echo "${IMAGE_KUBE_APISERVER}"
echo "${IMAGE_KUBE_CONTROLLER_MANAGER}"
echo "${IMAGE_KUBE_SCHEDULER}"
echo "${IMAGE_FAKE_KUBELET}"
echo "${IMAGE_PROMETHEUS}"
}
# usage info
function usage() {
init_global_flags
echo "Usage $0"
echo "Commands:"
echo " create Creates one fake cluster"
echo " delete Deletes one fake cluster"
echo " list List all fake cluster"
echo " images List all images used by fake cluster"
echo "Flags:"
echo " -h, --help show this help"
echo " -n, --name string cluster name (default: 'default')"
echo " -p, --port uint16|random port of the apiserver of the cluster (default: 'random')"
echo " -r, --generate-replicas uint32 number of replicas of the generate node (default: '${GENERATE_REPLICAS}')"
echo " --generate-node-name string generate node name prefix (default: '${GENERATE_NODE_NAME}')"
echo " --mock string mock specifies the cluster from file (default: '${MOCK}')"
echo " --node-name strings extra node name (default: '${NODE_NAME}')"