530 lines
18 KiB
Bash
Executable File
530 lines
18 KiB
Bash
Executable File
#!/usr/bin/env bash
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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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# This script holds common bash variables and utility functions.
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KARMADA_SYSTEM_NAMESPACE="karmada-system"
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ETCD_POD_LABEL="etcd"
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APISERVER_POD_LABEL="karmada-apiserver"
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KUBE_CONTROLLER_POD_LABEL="kube-controller-manager"
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KARMADA_CONTROLLER_LABEL="karmada-controller-manager"
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KARMADA_SCHEDULER_LABEL="karmada-scheduler"
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KARMADA_WEBHOOK_LABEL="karmada-webhook"
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AGENT_POD_LABEL="karmada-agent"
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MIN_Go_VERSION=go1.16.0
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# This function installs a Go tools by 'go install' command.
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# Parameters:
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# - $1: package name, such as "sigs.k8s.io/controller-tools/cmd/controller-gen"
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# - $2: package version, such as "v0.4.1"
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function util::install_tools() {
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local package="$1"
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local version="$2"
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GO111MODULE=on go install "${package}"@"${version}"
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GOPATH=$(go env GOPATH | awk -F ':' '{print $1}')
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export PATH=$PATH:$GOPATH/bin
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}
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function util::cmd_exist {
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local CMD=$(command -v ${1})
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if [[ ! -x ${CMD} ]]; then
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return 1
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fi
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return 0
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}
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# util::cmd_must_exist check whether command is installed.
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function util::cmd_must_exist {
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local CMD=$(command -v ${1})
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if [[ ! -x ${CMD} ]]; then
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echo "Please install ${1} and verify they are in \$PATH."
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exit 1
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fi
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}
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function util::verify_go_version {
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local go_version
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IFS=" " read -ra go_version <<< "$(GOFLAGS='' go version)"
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if [[ "${MIN_Go_VERSION}" != $(echo -e "${MIN_Go_VERSION}\n${go_version[2]}" | sort -s -t. -k 1,1 -k 2,2n -k 3,3n | head -n1) && "${go_version[2]}" != "devel" ]]; then
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echo "Detected go version: ${go_version[*]}."
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echo "Karmada requires ${MIN_Go_VERSION} or greater."
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echo "Please install ${MIN_Go_VERSION} or later."
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exit 1
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fi
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}
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# util::cmd_must_exist_cfssl downloads cfssl/cfssljson if they do not already exist in PATH
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function util::cmd_must_exist_cfssl {
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CFSSL_VERSION=${1}
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if command -v cfssl &>/dev/null && command -v cfssljson &>/dev/null; then
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CFSSL_BIN=$(command -v cfssl)
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CFSSLJSON_BIN=$(command -v cfssljson)
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return 0
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fi
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util::install_tools "github.com/cloudflare/cfssl/cmd/..." ${CFSSL_VERSION}
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GOPATH=$(go env GOPATH | awk -F ':' '{print $1}')
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CFSSL_BIN="${GOPATH}/bin/cfssl"
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CFSSLJSON_BIN="${GOPATH}/bin/cfssljson"
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if [[ ! -x ${CFSSL_BIN} || ! -x ${CFSSLJSON_BIN} ]]; then
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echo "Failed to download 'cfssl'. Please install cfssl and cfssljson and verify they are in \$PATH."
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echo "Hint: export PATH=\$PATH:\$GOPATH/bin; go install github.com/cloudflare/cfssl/cmd/..."
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exit 1
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fi
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}
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# util::install_environment_check will check OS and ARCH before installing
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# ARCH support list: amd64,arm64
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# OS support list: linux,darwin
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function util::install_environment_check {
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local ARCH=${1:-}
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local OS=${2:-}
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if [[ "$ARCH" =~ ^(amd64|arm64)$ ]]; then
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if [[ "$OS" =~ ^(linux|darwin)$ ]]; then
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return 0
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fi
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fi
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echo "Sorry, Karmada installation does not support $ARCH/$OS at the moment"
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exit 1
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}
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# util::install_kubectl will install the given version kubectl
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function util::install_kubectl {
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local KUBECTL_VERSION=${1}
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local ARCH=${2}
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local OS=${3:-linux}
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if [ -z "$KUBECTL_VERSION" ]; then
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KUBECTL_VERSION=$(curl -L -s https://dl.k8s.io/release/stable.txt)
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fi
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echo "Installing 'kubectl ${KUBECTL_VERSION}' for you"
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curl --retry 5 -sSLo ./kubectl -w "%{http_code}" https://dl.k8s.io/release/"$KUBECTL_VERSION"/bin/"$OS"/"$ARCH"/kubectl | grep '200' > /dev/null
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ret=$?
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if [ ${ret} -eq 0 ]; then
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chmod +x ./kubectl
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mkdir -p ~/.local/bin/
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mv ./kubectl ~/.local/bin/kubectl
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export PATH=$PATH:~/.local/bin
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else
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echo "Failed to install kubectl, can not download the binary file at https://dl.k8s.io/release/$KUBECTL_VERSION/bin/$OS/$ARCH/kubectl"
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exit 1
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fi
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}
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# util::install_kind will install the given version kind
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function util::install_kind {
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local kind_version=${1}
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echo "Installing 'kind ${kind_version}' for you"
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local os_name
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os_name=$(go env GOOS)
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local arch_name
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arch_name=$(go env GOARCH)
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curl --retry 5 -sSLo ./kind -w "%{http_code}" "https://kind.sigs.k8s.io/dl/${kind_version}/kind-${os_name:-linux}-${arch_name:-amd64}" | grep '200' > /dev/null
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ret=$?
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if [ ${ret} -eq 0 ]; then
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chmod +x ./kind
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mkdir -p ~/.local/bin/
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mv ./kind ~/.local/bin/kind
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export PATH=$PATH:~/.local/bin
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else
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echo "Failed to install kind, can not download the binary file at https://kind.sigs.k8s.io/dl/${kind_version}/kind-${os_name:-linux}-${arch_name:-amd64}"
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exit 1
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fi
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}
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# util::create_signing_certkey creates a CA, args are sudo, dest-dir, ca-id, purpose
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function util::create_signing_certkey {
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local sudo=$1
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local dest_dir=$2
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local id=$3
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local purpose=$4
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OPENSSL_BIN=$(command -v openssl)
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# Create ca
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${sudo} /usr/bin/env bash -e <<EOF
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rm -f "${dest_dir}/${id}-ca.crt" "${dest_dir}/${id}-ca.key"
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${OPENSSL_BIN} req -x509 -sha256 -new -nodes -days 365 -newkey rsa:2048 -keyout "${dest_dir}/${id}-ca.key" -out "${dest_dir}/${id}-ca.crt" -subj "/C=xx/ST=x/L=x/O=x/OU=x/CN=ca/emailAddress=x/"
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echo '{"signing":{"default":{"expiry":"43800h","usages":["signing","key encipherment",${purpose}]}}}' > "${dest_dir}/${id}-ca-config.json"
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EOF
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}
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# util::create_certkey signs a certificate: args are sudo, dest-dir, ca, filename (roughly), subject, hosts...
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function util::create_certkey {
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local sudo=$1
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local dest_dir=$2
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local ca=$3
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local id=$4
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local cn=${5:-$4}
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local hosts=""
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local SEP=""
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shift 5
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while [[ -n "${1:-}" ]]; do
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hosts+="${SEP}\"$1\""
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SEP=","
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shift 1
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done
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${sudo} /usr/bin/env bash -e <<EOF
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cd ${dest_dir}
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echo '{"CN":"${cn}","hosts":[${hosts}],"names":[{"O":"system:masters"}],"key":{"algo":"rsa","size":2048}}' | ${CFSSL_BIN} gencert -ca=${ca}.crt -ca-key=${ca}.key -config=${ca}-config.json - | ${CFSSLJSON_BIN} -bare ${id}
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mv "${id}-key.pem" "${id}.key"
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mv "${id}.pem" "${id}.crt"
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rm -f "${id}.csr"
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EOF
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}
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# util::append_client_kubeconfig creates a new context including a cluster and a user to the existed kubeconfig file
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function util::append_client_kubeconfig {
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local kubeconfig_path=$1
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local client_certificate_file=$2
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local client_key_file=$3
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local api_host=$4
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local api_port=$5
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local client_id=$6
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local token=${7:-}
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kubectl config set-cluster "${client_id}" --server=https://"${api_host}:${api_port}" --insecure-skip-tls-verify=true --kubeconfig="${kubeconfig_path}"
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kubectl config set-credentials "${client_id}" --token="${token}" --client-certificate="${client_certificate_file}" --client-key="${client_key_file}" --embed-certs=true --kubeconfig="${kubeconfig_path}"
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kubectl config set-context "${client_id}" --cluster="${client_id}" --user="${client_id}" --kubeconfig="${kubeconfig_path}"
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}
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# util::write_client_kubeconfig creates a self-contained kubeconfig: args are sudo, dest-dir, client certificate data, client key data, host, port, client id, token(optional)
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function util::write_client_kubeconfig {
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local sudo=$1
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local dest_dir=$2
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local client_certificate_data=$3
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local client_key_data=$4
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local api_host=$5
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local api_port=$6
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local client_id=$7
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local token=${8:-}
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cat <<EOF | ${sudo} tee "${dest_dir}"/"${client_id}".config > /dev/null
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apiVersion: v1
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kind: Config
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clusters:
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- cluster:
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"insecure-skip-tls-verify": true
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server: https://${api_host}:${api_port}/
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name: karmada-apiserver
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users:
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- user:
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token: ${token}
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client-certificate-data: ${client_certificate_data}
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client-key-data: ${client_key_data}
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name: karmada-apiserver
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contexts:
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- context:
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cluster: karmada-apiserver
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user: karmada-apiserver
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name: karmada-apiserver
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current-context: karmada-apiserver
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EOF
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${sudo} chmod 0644 "${dest_dir}"/"${client_id}".config
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}
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# util::wait_for_condition blocks until the provided condition becomes true
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# Arguments:
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# - 1: message indicating what conditions is being waited for (e.g. 'ok')
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# - 2: a string representing an eval'able condition. When eval'd it should not output
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# anything to stdout or stderr.
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# - 3: optional timeout in seconds. If not provided, waits forever.
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# Returns:
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# 1 if the condition is not met before the timeout
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function util::wait_for_condition() {
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local msg=$1
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# condition should be a string that can be eval'd.
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local condition=$2
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local timeout=${3:-}
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local start_msg="Waiting for ${msg}"
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local error_msg="[ERROR] Timeout waiting for ${msg}"
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local counter=0
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while ! eval ${condition}; do
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if [[ "${counter}" = "0" ]]; then
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echo -n "${start_msg}"
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fi
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if [[ -z "${timeout}" || "${counter}" -lt "${timeout}" ]]; then
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counter=$((counter + 1))
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if [[ -n "${timeout}" ]]; then
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echo -n '.'
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fi
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sleep 1
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else
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echo -e "\n${error_msg}"
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return 1
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fi
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done
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if [[ "${counter}" != "0" && -n "${timeout}" ]]; then
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echo ' done'
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fi
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}
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# util::wait_file_exist checks if a file exists, if not, wait until timeout
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function util::wait_file_exist() {
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local file_path=${1}
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local timeout=${2}
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for ((time=0; time<${timeout}; time++)); do
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if [[ -e ${file_path} ]]; then
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return 0
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fi
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sleep 1
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done
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return 1
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}
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# util::wait_pod_ready waits for pod state becomes ready until timeout.
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# Parmeters:
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# - $1: pod label, such as "app=etcd"
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# - $2: pod namespace, such as "karmada-system"
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# - $3: time out, such as "200s"
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function util::wait_pod_ready() {
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local pod_label=$1
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local pod_namespace=$2
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echo "wait the $pod_label ready..."
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set +e
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util::kubectl_with_retry wait --for=condition=Ready --timeout=30s pods -l app=${pod_label} -n ${pod_namespace}
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ret=$?
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set -e
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if [ $ret -ne 0 ];then
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echo "kubectl describe info:"
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kubectl describe pod -l app=${pod_label} -n ${pod_namespace}
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fi
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return ${ret}
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}
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# util::kubectl_with_retry will retry if execute kubectl command failed
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# tolerate kubectl command failure that may happen before the pod is created by StatefulSet/Deployment.
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function util::kubectl_with_retry() {
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local ret=0
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for i in {1..10}; do
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kubectl "$@"
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ret=$?
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if [[ ${ret} -ne 0 ]]; then
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echo "kubectl $@ failed, retrying(${i} times)"
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sleep 1
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continue
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else
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return 0
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fi
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done
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echo "kubectl $@ failed"
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kubectl "$@"
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return ${ret}
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}
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# util::create_cluster creates a kubernetes cluster
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# util::create_cluster creates a kind cluster and don't wait for control plane node to be ready.
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# Parmeters:
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# - $1: cluster name, such as "host"
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# - $2: KUBECONFIG file, such as "/var/run/host.config"
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# - $3: node docker image to use for booting the cluster, such as "kindest/node:v1.19.1"
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# - $4: log file path, such as "/tmp/logs/"
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function util::create_cluster() {
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local cluster_name=${1}
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local kubeconfig=${2}
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local kind_image=${3}
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local log_path=${4}
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local cluster_config=${5:-}
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mkdir -p ${log_path}
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rm -rf "${log_path}/${cluster_name}.log"
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rm -f "${kubeconfig}"
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nohup kind delete cluster --name="${cluster_name}" >> "${log_path}"/"${cluster_name}".log 2>&1 && kind create cluster --name "${cluster_name}" --kubeconfig="${kubeconfig}" --image="${kind_image}" --config="${cluster_config}" >> "${log_path}"/"${cluster_name}".log 2>&1 &
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echo "Creating cluster ${cluster_name}"
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}
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# This function returns the IP address of a docker instance
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# Parameters:
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# - $1: docker instance name
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function util::get_docker_native_ipaddress(){
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local container_name=$1
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docker inspect --format='{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' "${container_name}"
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}
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# This function returns the IP address and port of a specific docker instance's host IP
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# Parameters:
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# - $1: docker instance name
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# Note:
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# Use for getting host IP and port for cluster
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# "6443/tcp" assumes that API server port is 6443 and protocol is TCP
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function util::get_docker_host_ip_port(){
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local container_name=$1
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docker inspect --format='{{range $key, $value := index .NetworkSettings.Ports "6443/tcp"}}{{if eq $key 0}}{{$value.HostIp}}:{{$value.HostPort}}{{end}}{{end}}' "${container_name}"
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}
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# util::check_clusters_ready checks if a cluster is ready, if not, wait until timeout
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function util::check_clusters_ready() {
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local kubeconfig_path=${1}
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local context_name=${2}
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echo "Waiting for kubeconfig file ${kubeconfig_path} and clusters ${context_name} to be ready..."
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util::wait_file_exist "${kubeconfig_path}" 300
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util::wait_for_condition 'running' "docker inspect --format='{{.State.Status}}' ${context_name}-control-plane &> /dev/null" 300
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kubectl config rename-context "kind-${context_name}" "${context_name}" --kubeconfig="${kubeconfig_path}"
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local os_name
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os_name=$(go env GOOS)
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local container_ip_port
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case $os_name in
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linux) container_ip_port=$(util::get_docker_native_ipaddress "${context_name}-control-plane")":6443"
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;;
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darwin) container_ip_port=$(util::get_docker_host_ip_port "${context_name}-control-plane")
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;;
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*)
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echo "OS ${os_name} does NOT support for getting container ip in installation script"
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exit 1
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esac
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kubectl config set-cluster "kind-${context_name}" --server="https://${container_ip_port}" --kubeconfig="${kubeconfig_path}"
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util::wait_for_condition 'ok' "kubectl --kubeconfig ${kubeconfig_path} --context ${context_name} get --raw=/healthz &> /dev/null" 300
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}
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# This function gets api server's ip from kubeconfig by context name
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function util::get_apiserver_ip_from_kubeconfig(){
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local context_name=$1
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local cluster_name apiserver_url
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cluster_name=$(kubectl config view --template='{{ range $_, $value := .contexts }}{{if eq $value.name '"\"${context_name}\""'}}{{$value.context.cluster}}{{end}}{{end}}')
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apiserver_url=$(kubectl config view --template='{{range $_, $value := .clusters }}{{if eq $value.name '"\"${cluster_name}\""'}}{{$value.cluster.server}}{{end}}{{end}}')
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echo "${apiserver_url}" | awk -F/ '{print $3}' | sed 's/:.*//'
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}
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# This function deploys webhook configuration
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# Parameters:
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# - $1: CA file
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# - $2: configuration file
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# Note:
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# Deprecated: should be removed after helm get on board.
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function util::deploy_webhook_configuration() {
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local ca_file=$1
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local conf=$2
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local ca_string=$(cat ${ca_file} | base64 | tr "\n" " "|sed s/[[:space:]]//g)
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local temp_path=$(mktemp -d)
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cp -rf "${conf}" "${temp_path}/temp.yaml"
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sed -i'' -e "s/{{caBundle}}/${ca_string}/g" "${temp_path}/temp.yaml"
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kubectl apply -f "${temp_path}/temp.yaml"
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rm -rf "${temp_path}"
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}
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function util::fill_cabundle() {
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local ca_file=$1
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local conf=$2
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local ca_string=$(sudo cat ${ca_file} | base64 | tr "\n" " "|sed s/[[:space:]]//g)
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sed -i'' -e "s/{{caBundle}}/${ca_string}/g" "${conf}"
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}
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# util::wait_service_external_ip give a service external ip when it is ready, if not, wait until timeout
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# Parameters:
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# - $1: service name in k8s
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# - $2: namespace
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SERVICE_EXTERNAL_IP=''
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function util::wait_service_external_ip() {
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local service_name=$1
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local namespace=$2
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local external_ip
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local tmp
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for tmp in {1..30}; do
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set +e
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external_ip=$(kubectl get service "${service_name}" -n "${namespace}" --template="{{range .status.loadBalancer.ingress}}{{.ip}} {{end}}" | xargs)
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set -e
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if [[ -z "$external_ip" ]]; then
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echo "wait the external ip of ${service_name} ready..."
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sleep 6
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continue
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else
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SERVICE_EXTERNAL_IP="${external_ip}"
|
|
return 0
|
|
fi
|
|
done
|
|
return 1
|
|
}
|
|
|
|
# util::get_load_balancer_ip get a valid load balancer ip from k8s service's 'loadBalancer' , if not, wait until timeout
|
|
# call 'util::wait_service_external_ip' before using this function
|
|
function util::get_load_balancer_ip() {
|
|
local tmp
|
|
local first_ip
|
|
if [[ -n "${SERVICE_EXTERNAL_IP}" ]]; then
|
|
first_ip=$(echo "${SERVICE_EXTERNAL_IP}" | awk '{print $1}') #temporarily choose the first one
|
|
for tmp in {1..10}; do
|
|
set +e
|
|
connect_test=$(curl -s -k -m 5 https://"${first_ip}":5443/readyz)
|
|
set -e
|
|
if [[ "${connect_test}" = "ok" ]]; then
|
|
echo "${first_ip}"
|
|
return 0
|
|
else
|
|
sleep 3
|
|
continue
|
|
fi
|
|
done
|
|
fi
|
|
return 1
|
|
}
|
|
|
|
# util::add_routes will add routes for given kind cluster
|
|
# Parameters:
|
|
# - $1: name of the kind cluster want to add routes
|
|
# - $2: the kubeconfig path of the cluster wanted to be connected
|
|
# - $3: the context in kubeconfig of the cluster wanted to be connected
|
|
function util::add_routes() {
|
|
unset IFS
|
|
routes=$(kubectl --kubeconfig ${2} --context ${3} get nodes -o jsonpath='{range .items[*]}ip route add {.spec.podCIDR} via {.status.addresses[?(.type=="InternalIP")].address}{"\n"}{end}')
|
|
echo "Connecting cluster ${1} to ${2}"
|
|
|
|
IFS=$'\n'
|
|
for n in $(kind get nodes --name "${1}"); do
|
|
for r in $routes; do
|
|
echo "exec cmd in docker $n $r"
|
|
eval "docker exec $n $r"
|
|
done
|
|
done
|
|
unset IFS
|
|
}
|
|
|
|
# util::get_macos_ipaddress will get ip address on macos interactively, store to 'MAC_NIC_IPADDRESS' if available
|
|
MAC_NIC_IPADDRESS=''
|
|
function util::get_macos_ipaddress() {
|
|
if [[ $(go env GOOS) = "darwin" ]]; then
|
|
tmp_ip=$(ipconfig getifaddr en0 || true)
|
|
echo ""
|
|
echo " Detected that you are installing Karmada on macOS "
|
|
echo ""
|
|
echo "It needs a Macintosh IP address to bind Karmada API Server(port 5443),"
|
|
echo "so that member clusters can access it from docker containers, please"
|
|
echo -n "input an available IP, "
|
|
if [[ -z ${tmp_ip} ]]; then
|
|
echo "you can use the command 'ifconfig' to look for one"
|
|
tips_msg="[Enter IP address]:"
|
|
else
|
|
echo "default IP will be en0 inet addr if exists"
|
|
tips_msg="[Enter for default ${tmp_ip}]:"
|
|
fi
|
|
read -r -p "${tips_msg}" MAC_NIC_IPADDRESS
|
|
MAC_NIC_IPADDRESS=${MAC_NIC_IPADDRESS:-$tmp_ip}
|
|
if [[ "${MAC_NIC_IPADDRESS}" =~ ^(([1-9]?[0-9]|1[0-9][0-9]|2([0-4][0-9]|5[0-5]))\.){3}([1-9]?[0-9]|1[0-9][0-9]|2([0-4][0-9]|5[0-5]))$ ]]; then
|
|
echo "Using IP address: ${MAC_NIC_IPADDRESS}"
|
|
else
|
|
echo -e "\nError: you input an invalid IP address"
|
|
exit 1
|
|
fi
|
|
else # non-macOS
|
|
MAC_NIC_IPADDRESS=${MAC_NIC_IPADDRESS:-}
|
|
fi
|
|
}
|