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lib.bash
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#!/bin/bash
# Expected variables:
# $kubedee_source_dir The directory where kubedee's source code is (i.e. git repo)
# $kubedee_dir The directory to store kubedee's internal data
# $kubedee_cache_dir The directory to store tools required by kubedee
# $kubedee_version The kubedee version, used for the cache
kubedee::log_info() {
local -r message="${1:-""}"
echo -e "\\033[1;37m==> ${message}\\033[0m"
}
kubedee::log_success() {
local -r message="${1:-""}"
echo -e "\\033[1;32m==> ${message}\\033[0m"
}
kubedee::log_warn() {
local -r message="${1:-""}"
echo -e "\\033[1;33m==> ${message}\\033[0m" >&2
}
kubedee::log_error() {
local -r message="${1:-""}"
echo -e "\\033[1;31m==> ${message}\\033[0m" >&2
}
kubedee::exit_error() {
local -r message="${1:-""}"
local -r code="${2:-1}"
kubedee::log_error "${message}"
exit "${code}"
}
# shellcheck disable=SC2154
[[ -z "${kubedee_dir}" ]] && {
kubedee::log_error "Internal error: \$kubedee_dir not set"
return 1
}
# shellcheck disable=SC2154
[[ -z "${kubedee_cache_dir}" ]] && {
kubedee::log_error "Internal error: \$kubedee_cache_dir not set"
return 1
}
# shellcheck disable=SC2154
[[ -z "${kubedee_version}" ]] && {
kubedee::log_error "Internal error: \$kubedee_version not set"
return 1
}
# shellcheck disable=SC2154
[[ -z "${kubedee_source_dir}" ]] && {
kubedee::log_error "Internal error: \$kubedee_source_dir not set"
return 1
}
readonly kubedee_base_image="ubuntu:20.04"
readonly kubedee_container_image="kubedee-container-image-${kubedee_version//[._]/-}"
readonly kubedee_etcd_version="v3.4.14"
readonly kubedee_runc_version="v1.0.0-rc93"
readonly kubedee_cni_plugins_version="v0.9.1"
readonly kubedee_crio_version="v1.20.0"
readonly lxd_status_code_running=103
readonly lxc_driver_version="$(lxc info | awk '/[:space:]*driver_version/ {print $2}')"
if [[ "${lxc_driver_version}" == 2* ]]; then
readonly raw_lxc_apparmor_profile="lxc.aa_profile=unconfined"
readonly raw_lxc_apparmor_allow_incomplete="lxc.aa_allow_incomplete=1"
else
readonly raw_lxc_apparmor_profile="lxc.apparmor.profile=unconfined"
readonly raw_lxc_apparmor_allow_incomplete="lxc.apparmor.allow_incomplete=1"
fi
# Args:
# $1 The unvalidated cluster name
#
# Return validated name or exit with error
kubedee::validate_name() {
local -r orig_name="${1:-}"
# We must be fairly strict about names, since they are used
# for container's hostname
if ! echo "${orig_name}" | grep -qE '^[[:alnum:]_.-]{1,50}$'; then
kubedee::exit_error "Invalid name (only '[[:alnum:]-]{1,50}' allowed): ${orig_name}"
fi
# Do some normalization to allow input like 'v1.8.4' while
# matching host name requirements
local -r name="${orig_name//[._]/-}"
if [[ "${orig_name}" != "${name}" ]]; then
kubedee::log_warn "Normalized name '${orig_name}' -> '${name}'"
fi
echo "${name}"
}
# Args:
# $1 The target directory
kubedee::cd_or_exit_error() {
local -r target="${1}"
cd "${target}" || kubedee::exit_error "Failed to cd to ${target}"
}
# Args:
# $1 The validated cluster name
kubedee::prune_old_caches() {
local -r cluster_name="${1}"
kubedee::log_info "Pruning old kubedee caches ..."
for cache_dir in "${kubedee_dir}/cache/"*; do
if [[ "${cache_dir}" != "${kubedee_cache_dir}" ]]; then
rm -rf "${cache_dir}"
fi
done
}
# Args:
# $1 The target file or directory
# $* The source files or directories
kubedee::copyl_or_exit_error() {
local -r target="${1}"
shift
for f in "$@"; do
if ! cp -l "${f}" "${target}" &>/dev/null; then
if ! cp "${f}" "${target}"; then
kubedee::exit_error "Failed to copy '${f}' to '${target}'"
fi
fi
done
}
# Args:
# $1 The target file or directory
# $* The source files or directories
kubedee::copy_or_exit_error() {
local -r target="${1}"
shift
for f in "$@"; do
if ! cp "${f}" "${target}"; then
kubedee::exit_error "Failed to copy '${f}' to '${target}'"
fi
done
}
# Args:
# $1 The validated cluster name
# $2 The path to the k8s bin directory (optional)
kubedee::copy_k8s_binaries() {
local -r cluster_name="${1}"
local -r target_dir="${kubedee_dir}/clusters/${cluster_name}/rootfs/usr/local/bin"
mkdir -p "${target_dir}"
local -r source_dir="${2:-$(pwd)/_output/bin}"
local -r files=(
kube-apiserver
kube-controller-manager
kube-proxy
kube-scheduler
kubectl
kubelet
)
for f in "${files[@]}"; do
kubedee::copy_or_exit_error "${target_dir}/" "${source_dir}/${f}"
done
}
kubedee::fetch_k8s() {
local -r k8s_version="${1}"
local -r target_dir="${kubedee_cache_dir}/kubernetes/${k8s_version}"
if [[ -e "${target_dir}/kube-apiserver" ]] &&
[[ -e "${target_dir}/kube-controller-manager" ]] &&
[[ -e "${target_dir}/kube-proxy" ]] &&
[[ -e "${target_dir}/kube-scheduler" ]] &&
[[ -e "${target_dir}/kubectl" ]] &&
[[ -e "${target_dir}/kubelet" ]]; then
# nothing to do
return
fi
mkdir -p "${target_dir}"
(
kubedee::cd_or_exit_error "${target_dir}"
kubedee::log_info "Fetching Kubernetes ${k8s_version} ..."
if ! curl -fsSLI "https://dl.k8s.io/${k8s_version}/kubernetes-server-linux-amd64.tar.gz" >/dev/null; then
kubedee::exit_error "Kubernetes version '${k8s_version}' not found on dl.k8s.io"
fi
curl -fsSL -o - "https://dl.k8s.io/${k8s_version}/kubernetes-server-linux-amd64.tar.gz" |
tar -xzf - --strip-components 3 \
"kubernetes/server/bin/"{kube-apiserver,kube-controller-manager,kubectl,kubelet,kube-proxy,kube-scheduler}
)
}
kubedee::fetch_etcd() {
local -r cache_dir="${kubedee_cache_dir}/etcd/${kubedee_etcd_version}"
mkdir -p "${cache_dir}"
[[ -e "${cache_dir}/etcd" && -e "${cache_dir}/etcdctl" ]] && return
local tmp_dir
tmp_dir="$(mktemp -d /tmp/kubedee-XXXXXX)"
(
kubedee::cd_or_exit_error "${tmp_dir}"
kubedee::log_info "Fetching etcd ${kubedee_etcd_version} ..."
curl -fsSL -o - "https://github.com/etcd-io/etcd/releases/download/${kubedee_etcd_version}/etcd-${kubedee_etcd_version}-linux-amd64.tar.gz" |
tar -xzf - --strip-components 1
kubedee::copyl_or_exit_error "${cache_dir}/" etcd etcdctl
)
rm -rf "${tmp_dir}"
}
kubedee::fetch_crio() {
local -r cache_dir="${kubedee_cache_dir}/crio/${kubedee_crio_version}"
mkdir -p "${cache_dir}"
[[ -e "${cache_dir}/crio" ]] && return
local tmp_dir
tmp_dir="$(mktemp -d /tmp/kubedee-XXXXXX)"
(
kubedee::cd_or_exit_error "${tmp_dir}"
kubedee::log_info "Fetching crio ${kubedee_crio_version} ..."
curl -fsSL -o - "https://files.schu.io/pub/cri-o/crio-amd64-${kubedee_crio_version}.tar.gz" |
tar -xzf -
kubedee::copyl_or_exit_error "${cache_dir}/" crio conmon pinns crio.conf crictl.yaml crio-umount.conf policy.json
)
rm -rf "${tmp_dir}"
}
kubedee::fetch_runc() {
local -r cache_dir="${kubedee_cache_dir}/runc/${kubedee_runc_version}"
mkdir -p "${cache_dir}"
[[ -e "${cache_dir}/runc" ]] && return
local tmp_dir
tmp_dir="$(mktemp -d /tmp/kubedee-XXXXXX)"
(
kubedee::cd_or_exit_error "${tmp_dir}"
kubedee::log_info "Fetching runc ${kubedee_runc_version} ..."
curl -fsSL -O "https://github.com/opencontainers/runc/releases/download/${kubedee_runc_version}/runc.amd64"
chmod +x runc.amd64
kubedee::copyl_or_exit_error "${cache_dir}/runc" runc.amd64
)
rm -rf "${tmp_dir}"
}
kubedee::fetch_cni_plugins() {
local -r cache_dir="${kubedee_cache_dir}/cni-plugins/${kubedee_cni_plugins_version}"
mkdir -p "${cache_dir}"
[[ -e "${cache_dir}/flannel" ]] && return
local tmp_dir
tmp_dir="$(mktemp -d /tmp/kubedee-XXXXXX)"
(
kubedee::cd_or_exit_error "${tmp_dir}"
kubedee::log_info "Fetching cni plugins ${kubedee_cni_plugins_version} ..."
curl -fsSL -o - "https://github.com/containernetworking/plugins/releases/download/${kubedee_cni_plugins_version}/cni-plugins-linux-amd64-${kubedee_cni_plugins_version}.tgz" |
tar -xzf -
kubedee::copyl_or_exit_error "${cache_dir}/" ./*
)
rm -rf "${tmp_dir}"
}
# Args:
# $1 The validated cluster name
kubedee::copy_etcd_binaries() {
local -r cluster_name="${1}"
kubedee::fetch_etcd
local -r cache_dir="${kubedee_cache_dir}/etcd/${kubedee_etcd_version}"
local -r target_dir="${kubedee_dir}/clusters/${cluster_name}/rootfs/usr/local/bin"
mkdir -p "${target_dir}"
kubedee::copyl_or_exit_error "${target_dir}/" "${cache_dir}/"{etcd,etcdctl}
}
# Args:
# $1 The validated cluster name
kubedee::k8s_minor_version() {
local -r cluster_name="${1}"
"${kubedee_dir}/clusters/${cluster_name}/rootfs/usr/local/bin/kubectl" version --client -o json | jq -r .clientVersion.minor
}
# Args:
# $1 The validated cluster name
kubedee::copy_crio_files() {
local -r cluster_name="${1}"
kubedee::fetch_crio
local -r cache_dir="${kubedee_cache_dir}/crio/${kubedee_crio_version}"
local target_dir="${kubedee_dir}/clusters/${cluster_name}/rootfs/usr/local/bin"
mkdir -p "${target_dir}"
kubedee::copyl_or_exit_error "${target_dir}/" "${cache_dir}/"{crio,conmon,pinns}
target_dir="${kubedee_dir}/clusters/${cluster_name}/rootfs/etc/crio"
mkdir -p "${target_dir}/"
kubedee::copyl_or_exit_error "${target_dir}/" "${cache_dir}/"{crio.conf,crictl.yaml,crio-umount.conf,policy.json}
}
# Args:
# $1 The validated cluster name
kubedee::copy_runc_binaries() {
local -r cluster_name="${1}"
kubedee::fetch_runc
local -r cache_dir="${kubedee_cache_dir}/runc/${kubedee_runc_version}"
local -r target_dir="${kubedee_dir}/clusters/${cluster_name}/rootfs/usr/bin"
mkdir -p "${target_dir}"
kubedee::copyl_or_exit_error "${target_dir}/" "${cache_dir}/runc"
}
# Args:
# $1 The validated cluster name
kubedee::copy_cni_plugins() {
local -r cluster_name="${1}"
kubedee::fetch_cni_plugins
local -r cache_dir="${kubedee_cache_dir}/cni-plugins/${kubedee_cni_plugins_version}"
local -r target_dir="${kubedee_dir}/clusters/${cluster_name}/rootfs/opt/cni/bin"
mkdir -p "${target_dir}"
kubedee::copyl_or_exit_error "${target_dir}/" "${cache_dir}/"*
}
# Args:
# $1 The validated cluster name
kubedee::create_network() {
local -r cluster_name="${1}"
mkdir -p "${kubedee_dir}/clusters/${cluster_name}"
local -r network_id_file="${kubedee_dir}/clusters/${cluster_name}/network_id"
local network_id
if [[ -e "${network_id_file}" ]]; then
network_id="$(cat "${network_id_file}")"
else
network_id="$(tr -cd 'a-z0-9' </dev/urandom | head -c 6 || true)"
echo "kubedee-${network_id}" >"${network_id_file}"
fi
if ! lxc network show "kubedee-${network_id}" &>/dev/null; then
kubedee::log_info "Creating network for ${cluster_name} ..."
lxc network create "kubedee-${network_id}"
fi
}
# Args:
# $1 The validated cluster name
kubedee::delete_network() {
local -r cluster_name="${1}"
local -r network_id_file="${kubedee_dir}/clusters/${cluster_name}/network_id"
kubedee::log_info "Deleting network for ${cluster_name} ..."
[[ -f "${network_id_file}" ]] || {
kubedee::log_warn "${network_id_file} doesn't exist"
return
}
local network_id
network_id="$(cat "${network_id_file}")"
if lxc network show "${network_id}" &>/dev/null; then
lxc network delete "${network_id}"
fi
rm -f "${network_id_file}"
}
# Args:
# $1 The storage pool name (optional)
# $2 The storage pool driver (optional)
kubedee::create_storage_pool() {
local -r cluster_name="${1:-kubedee}"
local -r driver="${2:-btrfs}"
if ! lxc storage show "${cluster_name}" &>/dev/null; then
kubedee::log_info "Creating new storage pool for kubedee ..."
lxc storage create "${cluster_name}" "${driver}"
fi
}
# Args:
# $1 The full container name
kubedee::container_status_code() {
local -r container_name="${1}"
lxc list --format json | jq -r ".[] | select(.name == \"${container_name}\").state.status_code"
}
# Args:
# $1 The full container name
kubedee::container_ipv4_address() {
local -r container_name="${1}"
lxc list --format json | jq -r ".[] | select(.name == \"${container_name}\").state.network.eth0.addresses[] | select(.family == \"inet\").address"
}
# Args:
# $1 The full container name
kubedee::container_wait_running() {
local -r cluster_name="${1}"
until [[ "$(kubedee::container_status_code "${cluster_name}")" -eq ${lxd_status_code_running} ]]; do
kubedee::log_info "Waiting for ${cluster_name} to reach state running ..."
sleep 3
done
until [[ "$(kubedee::container_ipv4_address "${cluster_name}")" != "" ]]; do
kubedee::log_info "Waiting for ${cluster_name} to get IPv4 address ..."
sleep 3
done
}
# Args:
# $1 The validated cluster name
kubedee::create_certificate_authority_k8s() {
local -r cluster_name="${1}"
local -r target_dir="${kubedee_dir}/clusters/${cluster_name}/certificates"
mkdir -p "${target_dir}"
(
kubedee::cd_or_exit_error "${target_dir}"
kubedee::log_info "Generating certificate authority for Kubernetes ..."
cat <<EOF | cfssl gencert -initca - | cfssljson -bare ca
{
"CN": "Kubernetes",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "DE",
"L": "Berlin",
"O": "Kubernetes",
"OU": "CA",
"ST": "Berlin"
}
]
}
EOF
cat >ca-config.json <<EOF
{
"signing": {
"default": {
"expiry": "8760h"
},
"profiles": {
"kubernetes": {
"usages": ["signing", "key encipherment", "server auth", "client auth"],
"expiry": "8760h"
}
}
}
}
EOF
)
}
# Args:
# $1 The validated cluster name
kubedee::create_certificate_authority_aggregation() {
local -r cluster_name="${1}"
local -r target_dir="${kubedee_dir}/clusters/${cluster_name}/certificates"
mkdir -p "${target_dir}"
(
kubedee::cd_or_exit_error "${target_dir}"
kubedee::log_info "Generating certificate authority for Kubernetes Front Proxy ..."
cat <<EOF | cfssl gencert -initca - | cfssljson -bare ca-aggregation
{
"CN": "Kubernetes Front Proxy CA",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "DE",
"L": "Berlin",
"O": "Kubernetes Front Proxy",
"OU": "CA",
"ST": "Berlin"
}
]
}
EOF
)
}
# Args:
# $1 The validated cluster name
kubedee::create_certificate_authority_etcd() {
local -r cluster_name="${1}"
local -r target_dir="${kubedee_dir}/clusters/${cluster_name}/certificates"
mkdir -p "${target_dir}"
(
kubedee::cd_or_exit_error "${target_dir}"
kubedee::log_info "Generating certificate authority for etcd ..."
cat <<EOF | cfssl gencert -initca - | cfssljson -bare ca-etcd
{
"CN": "etcd",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "DE",
"L": "Berlin",
"O": "etcd",
"OU": "CA",
"ST": "Berlin"
}
]
}
EOF
)
}
# Args:
# $1 The validated cluster name
kubedee::create_certificate_admin() {
local -r cluster_name="${1}"
local -r target_dir="${kubedee_dir}/clusters/${cluster_name}/certificates"
mkdir -p "${target_dir}"
(
kubedee::cd_or_exit_error "${target_dir}"
kubedee::log_info "Generating admin certificate ..."
cat <<EOF | cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes - | cfssljson -bare admin
{
"CN": "admin",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "DE",
"L": "Berlin",
"O": "system:masters",
"OU": "kubedee",
"ST": "Berlin"
}
]
}
EOF
)
}
# Args:
# $1 The validated cluster name
kubedee::create_certificate_aggregation_client() {
local -r cluster_name="${1}"
local -r target_dir="${kubedee_dir}/clusters/${cluster_name}/certificates"
mkdir -p "${target_dir}"
(
kubedee::cd_or_exit_error "${target_dir}"
kubedee::log_info "Generating aggregation client certificate ..."
cat <<EOF | cfssl gencert -ca=ca-aggregation.pem -ca-key=ca-aggregation-key.pem -config=ca-config.json -profile=kubernetes - | cfssljson -bare aggregation-client
{
"CN": "kube-apiserver",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "DE",
"L": "Berlin",
"O": "kube-apiserver",
"OU": "kubedee",
"ST": "Berlin"
}
]
}
EOF
)
}
# Args:
# $1 The validated cluster name
kubedee::create_certificate_etcd() {
local -r cluster_name="${1}"
local -r target_dir="${kubedee_dir}/clusters/${cluster_name}/certificates"
local ip
ip="$(kubedee::container_ipv4_address "kubedee-${cluster_name}-etcd")"
[[ -z "${ip}" ]] && kubedee::exit_error "Failed to get IPv4 for kubedee-${cluster_name}-etcd"
mkdir -p "${target_dir}"
(
kubedee::cd_or_exit_error "${target_dir}"
kubedee::log_info "Generating etcd certificate ..."
cat <<EOF | cfssl gencert -ca=ca-etcd.pem -ca-key=ca-etcd-key.pem -config=ca-config.json -profile=kubernetes -hostname="${ip},127.0.0.1" - | cfssljson -bare etcd
{
"CN": "etcd",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "DE",
"L": "Berlin",
"O": "etcd",
"OU": "kubedee",
"ST": "Berlin"
}
]
}
EOF
)
}
# Args:
# $1 The validated cluster name
# $2 Additional X509v3 Subject Alternative Name to set, comma separated (optional)
kubedee::create_certificate_kubernetes() {
local -r cluster_name="${1}"
local apiserver_extra_hostnames="${2:-}"
[[ -n "${apiserver_extra_hostnames}" ]] && apiserver_extra_hostnames="${apiserver_extra_hostnames/#/,}"
local -r target_dir="${kubedee_dir}/clusters/${cluster_name}/certificates"
local -r container_name="kubedee-${cluster_name}-controller"
kubedee::container_wait_running "${container_name}"
local ip
ip="$(kubedee::container_ipv4_address "kubedee-${cluster_name}-controller")"
[[ -z "${ip}" ]] && kubedee::exit_error "Failed to get IPv4 for kubedee-${cluster_name}-controller"
mkdir -p "${target_dir}"
(
kubedee::cd_or_exit_error "${target_dir}"
kubedee::log_info "Generating controller certificate ..."
cat <<EOF | cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes -hostname="10.32.0.1,${ip},127.0.0.1${apiserver_extra_hostnames}" - | cfssljson -bare kubernetes
{
"CN": "kubernetes",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "DE",
"L": "Berlin",
"O": "Kubernetes",
"OU": "kubedee",
"ST": "Berlin"
}
]
}
EOF
cat <<EOF | cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes - | cfssljson -bare kube-proxy
{
"CN": "system:kube-proxy",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "DE",
"L": "Berlin",
"O": "system:node-proxier",
"OU": "kubedee",
"ST": "Berlin"
}
]
}
EOF
)
}
# Args:
# $1 The validated cluster name
# $2 The container name
kubedee::create_certificate_worker() {
local -r cluster_name="${1}"
local -r container_name="${2}"
local -r target_dir="${kubedee_dir}/clusters/${cluster_name}/certificates"
local ip
ip="$(kubedee::container_ipv4_address "${container_name}")"
[[ -z "${ip}" ]] && kubedee::exit_error "Failed to get IPv4 for ${container_name}"
mkdir -p "${target_dir}"
(
kubedee::cd_or_exit_error "${target_dir}"
kubedee::log_info "Generating ${container_name} certificate ..."
cat <<EOF | cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes -hostname="${ip},${container_name}" - | cfssljson -bare "${container_name}"
{
"CN": "system:node:${container_name}",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "DE",
"L": "Berlin",
"O": "system:nodes",
"OU": "kubedee",
"ST": "Berlin"
}
]
}
EOF
)
}
# Args:
# $1 The validated cluster name
kubedee::create_certificate_kube_controller_manager() {
local -r cluster_name="${1}"
local -r target_dir="${kubedee_dir}/clusters/${cluster_name}/certificates"
mkdir -p "${target_dir}"
(
kubedee::cd_or_exit_error "${target_dir}"
kubedee::log_info "Generating kube-controller-manager certificate ..."
cat <<EOF | cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes - | cfssljson -bare kube-controller-manager
{
"CN": "system:kube-controller-manager",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "DE",
"L": "Berlin",
"O": "system:kube-controller-manager",
"OU": "kubedee",
"ST": "Berlin"
}
]
}
EOF
)
}
# Args:
# $1 The validated cluster name
kubedee::create_certificate_kube_scheduler() {
local -r cluster_name="${1}"
local -r target_dir="${kubedee_dir}/clusters/${cluster_name}/certificates"
mkdir -p "${target_dir}"
(
kubedee::cd_or_exit_error "${target_dir}"
kubedee::log_info "Generating kube-scheduler certificate ..."
cat <<EOF | cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes - | cfssljson -bare kube-scheduler
{
"CN": "system:kube-scheduler",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "DE",
"L": "Berlin",
"O": "system:kube-scheduler",
"OU": "kubedee",
"ST": "Berlin"
}
]
}
EOF
)
}
# Args:
# $1 The validated cluster name
kubedee::create_kubeconfig_admin() {
local -r cluster_name="${1}"
local -r cluster_dir="${kubedee_dir}/clusters/${cluster_name}"
local controller_ip
controller_ip="$(kubedee::container_ipv4_address "kubedee-${cluster_name}-controller")"
mkdir -p "${cluster_dir}/kubeconfig"
kubectl config set-cluster kubedee \
--certificate-authority="${cluster_dir}/certificates/ca.pem" \
--embed-certs=true \
--server="https://${controller_ip}:6443" \
--kubeconfig="${cluster_dir}/kubeconfig/admin.kubeconfig"
kubectl config set-credentials admin \
--client-certificate="${cluster_dir}/certificates/admin.pem" \
--client-key="${cluster_dir}/certificates/admin-key.pem" \
--embed-certs=true \
--kubeconfig="${cluster_dir}/kubeconfig/admin.kubeconfig"
kubectl config set-context default \
--cluster=kubedee \
--user=admin \
--kubeconfig="${cluster_dir}/kubeconfig/admin.kubeconfig"
kubectl config use-context default --kubeconfig="${cluster_dir}/kubeconfig/admin.kubeconfig"
}
# Args:
# $1 The validated cluster name
kubedee::create_kubeconfig_controller() {
local -r cluster_name="${1}"
local -r cluster_dir="${kubedee_dir}/clusters/${cluster_name}"
local controller_ip
controller_ip="$(kubedee::container_ipv4_address "kubedee-${cluster_name}-controller")"
mkdir -p "${cluster_dir}/kubeconfig"
kubedee::log_info "Generating ${container_name} kubeconfig ..."
kubectl config set-cluster kubedee \
--certificate-authority="${cluster_dir}/certificates/ca.pem" \
--embed-certs=true \
--server="https://${controller_ip}:6443" \
--kubeconfig="${cluster_dir}/kubeconfig/kube-controller-manager.kubeconfig"
kubectl config set-credentials kube-controller-manager \
--client-certificate="${cluster_dir}/certificates/kube-controller-manager.pem" \
--client-key="${cluster_dir}/certificates/kube-controller-manager-key.pem" \
--embed-certs=true \
--kubeconfig="${cluster_dir}/kubeconfig/kube-controller-manager.kubeconfig"
kubectl config set-context default \
--cluster=kubedee \
--user=kube-controller-manager \
--kubeconfig="${cluster_dir}/kubeconfig/kube-controller-manager.kubeconfig"
kubectl config use-context default --kubeconfig="${cluster_dir}/kubeconfig/kube-controller-manager.kubeconfig"
kubectl config set-cluster kubedee \
--certificate-authority="${cluster_dir}/certificates/ca.pem" \
--embed-certs=true \
--server="https://${controller_ip}:6443" \
--kubeconfig="${cluster_dir}/kubeconfig/kube-scheduler.kubeconfig"
kubectl config set-credentials kube-scheduler \
--client-certificate="${cluster_dir}/certificates/kube-scheduler.pem" \
--client-key="${cluster_dir}/certificates/kube-scheduler-key.pem" \
--embed-certs=true \
--kubeconfig="${cluster_dir}/kubeconfig/kube-scheduler.kubeconfig"
kubectl config set-context default \
--cluster=kubedee \
--user=kube-scheduler \
--kubeconfig="${cluster_dir}/kubeconfig/kube-scheduler.kubeconfig"
kubectl config use-context default --kubeconfig="${cluster_dir}/kubeconfig/kube-scheduler.kubeconfig"
}
# Args:
# $1 The validated cluster name
# $2 The container name
kubedee::create_kubeconfig_worker() {
local -r cluster_name="${1}"
local -r container_name="${2}"
local -r cluster_dir="${kubedee_dir}/clusters/${cluster_name}"
local controller_ip
controller_ip="$(kubedee::container_ipv4_address "kubedee-${cluster_name}-controller")"
mkdir -p "${cluster_dir}/kubeconfig"
kubedee::log_info "Generating ${container_name} kubeconfig ..."
kubectl config set-cluster kubedee \
--certificate-authority="${cluster_dir}/certificates/ca.pem" \
--embed-certs=true \
--server="https://${controller_ip}:6443" \
--kubeconfig="${cluster_dir}/kubeconfig/kube-proxy.kubeconfig"
kubectl config set-credentials kube-proxy \
--client-certificate="${cluster_dir}/certificates/kube-proxy.pem" \
--client-key="${cluster_dir}/certificates/kube-proxy-key.pem" \
--embed-certs=true \
--kubeconfig="${cluster_dir}/kubeconfig/kube-proxy.kubeconfig"
kubectl config set-context default \
--cluster=kubedee \
--user=kube-proxy \
--kubeconfig="${cluster_dir}/kubeconfig/kube-proxy.kubeconfig"
kubectl config use-context default --kubeconfig="${cluster_dir}/kubeconfig/kube-proxy.kubeconfig"
kubectl config set-cluster kubedee \
--certificate-authority="${cluster_dir}/certificates/ca.pem" \
--embed-certs=true \
--server="https://${controller_ip}:6443" \
--kubeconfig="${cluster_dir}/kubeconfig/${container_name}-kubelet.kubeconfig"
kubectl config set-credentials "system:node:${container_name}" \
--client-certificate="${cluster_dir}/certificates/${container_name}.pem" \
--client-key="${cluster_dir}/certificates/${container_name}-key.pem" \
--embed-certs=true \
--kubeconfig="${cluster_dir}/kubeconfig/${container_name}-kubelet.kubeconfig"
kubectl config set-context default \
--cluster=kubedee \
--user="system:node:${container_name}" \
--kubeconfig="${cluster_dir}/kubeconfig/${container_name}-kubelet.kubeconfig"
kubectl config use-context default --kubeconfig="${cluster_dir}/kubeconfig/${container_name}-kubelet.kubeconfig"
}
# Args:
# $1 The validated cluster name
kubedee::launch_etcd() {
local -r cluster_name="${1}"
local -r container_name="kubedee-${cluster_name}-etcd"
local -r network_id_file="${kubedee_dir}/clusters/${cluster_name}/network_id"
local network_id
network_id="$(cat "${network_id_file}")"
lxc info "${container_name}" &>/dev/null && return
lxc launch \
--storage kubedee \
--network "${network_id}" \
--config raw.lxc="${raw_lxc_apparmor_allow_incomplete}" \
"${kubedee_container_image}" "${container_name}"
}
# Args:
# $1 The validated cluster name
kubedee::configure_etcd() {
local -r cluster_name="${1}"
local -r container_name="kubedee-${cluster_name}-etcd"
kubedee::container_wait_running "${container_name}"
kubedee::create_certificate_etcd "${cluster_name}"
local ip
ip="$(kubedee::container_ipv4_address "${container_name}")"
kubedee::log_info "Providing files to ${container_name} ..."
lxc config device add "${container_name}" binary-etcd disk source="${kubedee_dir}/clusters/${cluster_name}/rootfs/usr/local/bin/etcd" path="/usr/local/bin/etcd"
lxc config device add "${container_name}" binary-etcdctl disk source="${kubedee_dir}/clusters/${cluster_name}/rootfs/usr/local/bin/etcdctl" path="/usr/local/bin/etcdctl"
lxc file push -p "${kubedee_dir}/clusters/${cluster_name}/certificates/"{etcd.pem,etcd-key.pem,ca-etcd.pem} "${container_name}/etc/etcd/"
kubedee::log_info "Configuring ${container_name} ..."
cat <<EOF | lxc exec "${container_name}" bash
set -euo pipefail
cat >/etc/systemd/system/etcd.service <<'ETCD_UNIT'
[Unit]
Description=etcd
[Service]
ExecStart=/usr/local/bin/etcd \\
--name ${container_name} \\
--cert-file=/etc/etcd/etcd.pem \\
--key-file=/etc/etcd/etcd-key.pem \\
--peer-cert-file=/etc/etcd/etcd.pem \\
--peer-key-file=/etc/etcd/etcd-key.pem \\
--trusted-ca-file=/etc/etcd/ca-etcd.pem \\
--peer-trusted-ca-file=/etc/etcd/ca-etcd.pem \\
--peer-client-cert-auth \\
--client-cert-auth \\
--initial-advertise-peer-urls https://${ip}:2380 \\
--listen-peer-urls https://${ip}:2380 \\
--listen-client-urls https://${ip}:2379,http://127.0.0.1:2379 \\
--advertise-client-urls https://${ip}:2379 \\
--initial-cluster-token etcd-cluster-0 \\
--initial-cluster ${container_name}=https://${ip}:2380 \\
--initial-cluster-state new \\
--data-dir=/var/lib/etcd
Restart=on-failure
RestartSec=5
[Install]
WantedBy=multi-user.target
ETCD_UNIT
systemctl daemon-reload
systemctl -q enable etcd
systemctl start etcd
EOF
}
# Args:
# $1 The validated cluster name
kubedee::configure_controller() {
local -r cluster_name="${1}"
local -r container_name="${2}"
local -r admission_plugins="${3}"
local etcd_ip
etcd_ip="$(kubedee::container_ipv4_address "kubedee-${cluster_name}-etcd")"
kubedee::create_certificate_kube_controller_manager "${cluster_name}"
kubedee::create_certificate_kube_scheduler "${cluster_name}"
kubedee::create_kubeconfig_controller "${cluster_name}" "${container_name}"
kubedee::container_wait_running "${container_name}"
kubedee::log_info "Providing files to ${container_name} ..."
lxc config device add "${container_name}" binary-kube-apiserver disk source="${kubedee_dir}/clusters/${cluster_name}/rootfs/usr/local/bin/kube-apiserver" path="/usr/local/bin/kube-apiserver"
lxc config device add "${container_name}" binary-kube-controller-manager disk source="${kubedee_dir}/clusters/${cluster_name}/rootfs/usr/local/bin/kube-controller-manager" path="/usr/local/bin/kube-controller-manager"
lxc config device add "${container_name}" binary-kube-scheduler disk source="${kubedee_dir}/clusters/${cluster_name}/rootfs/usr/local/bin/kube-scheduler" path="/usr/local/bin/kube-scheduler"
lxc file push -p "${kubedee_dir}/clusters/${cluster_name}/certificates/"{kubernetes.pem,kubernetes-key.pem,ca.pem,ca-key.pem,etcd.pem,etcd-key.pem,ca-etcd.pem,ca-aggregation.pem,aggregation-client.pem,aggregation-client-key.pem} "${container_name}/etc/kubernetes/"
lxc file push -p "${kubedee_dir}/clusters/${cluster_name}/kubeconfig/"{kube-controller-manager.kubeconfig,kube-scheduler.kubeconfig} "${container_name}/etc/kubernetes/"
local kubescheduler_config_api_version="kubescheduler.config.k8s.io/v1beta1"
local k8s_minor_version
k8s_minor_version="$(kubedee::k8s_minor_version "${cluster_name}")"
if [[ "${k8s_minor_version}" == 16* ]] ||
[[ "${k8s_minor_version}" == 17* ]]; then
kubescheduler_config_api_version="kubescheduler.config.k8s.io/v1alpha1"
fi
if [[ "${k8s_minor_version}" == 18* ]]; then
kubescheduler_config_api_version="kubescheduler.config.k8s.io/v1alpha2"
fi
kubedee::log_info "Configuring ${container_name} ..."
cat <<EOF | lxc exec "${container_name}" bash
set -euo pipefail
cat >/etc/systemd/system/kube-apiserver.service <<'KUBE_APISERVER_UNIT'
[Unit]
Description=Kubernetes API Server
[Service]
ExecStart=/usr/local/bin/kube-apiserver \\
--allow-privileged=true \\
--apiserver-count=3 \\
--audit-log-maxage=30 \\
--audit-log-maxbackup=3 \\
--audit-log-maxsize=100 \\
--audit-log-path=/var/log/audit.log \\
--authorization-mode=Node,RBAC \\
--bind-address=0.0.0.0 \\
--client-ca-file=/etc/kubernetes/ca.pem \\
--enable-admission-plugins=${admission_plugins} \\
--enable-swagger-ui=true \\
--etcd-cafile=/etc/kubernetes/ca-etcd.pem \\
--etcd-certfile=/etc/kubernetes/etcd.pem \\
--etcd-keyfile=/etc/kubernetes/etcd-key.pem \\
--etcd-servers=https://${etcd_ip}:2379 \\
--event-ttl=1h \\
--kubelet-certificate-authority=/etc/kubernetes/ca.pem \\
--kubelet-client-certificate=/etc/kubernetes/kubernetes.pem \\
--kubelet-client-key=/etc/kubernetes/kubernetes-key.pem \\
--runtime-config=rbac.authorization.k8s.io/v1alpha1 \\
--service-account-issuer=https://api \\
--service-account-signing-key-file=/etc/kubernetes/ca-key.pem \\
--service-account-api-audiences=kubernetes.default.svc \\
--service-account-key-file=/etc/kubernetes/ca-key.pem \\
--service-cluster-ip-range=10.32.0.0/24 \\