mirror of https://github.com/easzlab/kubeasz.git
431 lines
14 KiB
Bash
431 lines
14 KiB
Bash
#!/bin/bash
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#--------------------------------------------------
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# This script is used for:
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# 1. to download the scripts/binaries/images needed for installing a k8s cluster with kubeasz
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# 2. to run kubeasz in a container (optional)
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# @author: gjmzj
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# @usage: ./ezdown
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# @repo: https://github.com/easzlab/kubeasz
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# @ref: https://github.com/kubeasz/dockerfiles
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#--------------------------------------------------
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set -o nounset
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set -o errexit
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#set -o xtrace
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# default settings, can be overridden by cmd line options, see usage
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DOCKER_VER=20.10.5
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KUBEASZ_VER=3.0.1
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K8S_BIN_VER=v1.20.5
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EXT_BIN_VER=0.8.1
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SYS_PKG_VER=0.3.3
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HARBOR_VER=v2.1.3
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REGISTRY_MIRROR=CN
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# images needed by k8s cluster
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calicoVer=v3.15.3
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flannelVer=v0.13.0-amd64
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dnsNodeCacheVer=1.16.0
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corednsVer=1.7.1
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dashboardVer=v2.1.0
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dashboardMetricsScraperVer=v1.0.6
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metricsVer=v0.3.6
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pauseVer=3.2
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nfsProvisionerVer=v4.0.1
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export ciliumVer=v1.4.1
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export kubeRouterVer=v0.3.1
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export kubeOvnVer=v1.5.3
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export promChartVer=12.10.6
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export traefikChartVer=9.12.3
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function usage() {
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echo -e "\033[33mUsage:\033[0m ezdown [options] [args]"
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cat <<EOF
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option: -{DdekSz}
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-C stop&clean all local containers
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-D download all into "$BASE"
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-P download system packages for offline installing
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-R download Registry(harbor) offline installer
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-S start kubeasz in a container
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-d <ver> set docker-ce version, default "$DOCKER_VER"
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-e <ver> set kubeasz-ext-bin version, default "$EXT_BIN_VER"
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-k <ver> set kubeasz-k8s-bin version, default "$K8S_BIN_VER"
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-m <str> set docker registry mirrors, default "CN"(used in Mainland,China)
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-p <ver> set kubeasz-sys-pkg version, default "$SYS_PKG_VER"
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-z <ver> set kubeasz version, default "$KUBEASZ_VER"
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EOF
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}
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function logger() {
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TIMESTAMP=$(date +'%Y-%m-%d %H:%M:%S')
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case "$1" in
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debug)
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echo -e "$TIMESTAMP \033[36mDEBUG\033[0m $2"
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;;
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info)
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echo -e "$TIMESTAMP \033[32mINFO\033[0m $2"
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;;
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warn)
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echo -e "$TIMESTAMP \033[33mWARN\033[0m $2"
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;;
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error)
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echo -e "$TIMESTAMP \033[31mERROR\033[0m $2"
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;;
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*)
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;;
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esac
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}
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function download_docker() {
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if [[ "$REGISTRY_MIRROR" == CN ]];then
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DOCKER_URL="https://mirrors.tuna.tsinghua.edu.cn/docker-ce/linux/static/stable/x86_64/docker-${DOCKER_VER}.tgz"
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else
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DOCKER_URL="https://download.docker.com/linux/static/stable/x86_64/docker-${DOCKER_VER}.tgz"
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fi
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if [[ -f "$BASE/down/docker-${DOCKER_VER}.tgz" ]];then
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logger warn "docker binaries already existed"
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else
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logger info "downloading docker binaries, version $DOCKER_VER"
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if [[ -e /usr/bin/curl ]];then
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curl -C- -O --retry 3 "$DOCKER_URL" || { logger error "downloading docker failed"; exit 1; }
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else
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wget -c "$DOCKER_URL" || { logger error "downloading docker failed"; exit 1; }
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fi
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/bin/mv -f "./docker-$DOCKER_VER.tgz" "$BASE/down"
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fi
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tar zxf "$BASE/down/docker-$DOCKER_VER.tgz" -C "$BASE/down" && \
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/bin/cp -f "$BASE"/down/docker/* "$BASE/bin" && \
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/bin/mv -f "$BASE"/down/docker/* /opt/kube/bin && \
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ln -sf /opt/kube/bin/docker /bin/docker
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}
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function install_docker() {
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# check if a container runtime is already installed
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systemctl status docker|grep Active|grep -q running && { logger warn "docker is already running."; return 0; }
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logger debug "generate docker service file"
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cat > /etc/systemd/system/docker.service << EOF
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[Unit]
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Description=Docker Application Container Engine
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Documentation=http://docs.docker.io
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[Service]
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Environment="PATH=/opt/kube/bin:/bin:/sbin:/usr/bin:/usr/sbin"
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ExecStartPre=/sbin/iptables -F
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ExecStartPre=/sbin/iptables -X
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ExecStartPre=/sbin/iptables -F -t nat
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ExecStartPre=/sbin/iptables -X -t nat
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ExecStartPre=/sbin/iptables -F -t raw
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ExecStartPre=/sbin/iptables -X -t raw
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ExecStartPre=/sbin/iptables -F -t mangle
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ExecStartPre=/sbin/iptables -X -t mangle
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ExecStart=/opt/kube/bin/dockerd
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ExecStartPost=/sbin/iptables -P INPUT ACCEPT
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ExecStartPost=/sbin/iptables -P OUTPUT ACCEPT
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ExecStartPost=/sbin/iptables -P FORWARD ACCEPT
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ExecReload=/bin/kill -s HUP \$MAINPID
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Restart=on-failure
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RestartSec=5
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LimitNOFILE=infinity
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LimitNPROC=infinity
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LimitCORE=infinity
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Delegate=yes
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KillMode=process
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[Install]
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WantedBy=multi-user.target
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EOF
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# configuration for dockerd
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mkdir -p /etc/docker
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logger debug "generate docker config: /etc/docker/daemon.json"
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if [[ "$REGISTRY_MIRROR" == CN ]];then
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logger debug "prepare register mirror for $REGISTRY_MIRROR"
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cat > /etc/docker/daemon.json << EOF
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{
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"registry-mirrors": [
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"https://docker.mirrors.ustc.edu.cn",
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"http://hub-mirror.c.163.com"
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],
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"max-concurrent-downloads": 10,
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"log-driver": "json-file",
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"log-level": "warn",
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"log-opts": {
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"max-size": "10m",
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"max-file": "3"
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},
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"data-root": "/var/lib/docker"
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}
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EOF
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else
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logger debug "standard config without registry mirrors"
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cat > /etc/docker/daemon.json << EOF
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{
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"max-concurrent-downloads": 10,
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"log-driver": "json-file",
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"log-level": "warn",
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"log-opts": {
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"max-size": "10m",
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"max-file": "3"
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},
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"data-root": "/var/lib/docker"
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}
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EOF
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fi
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if [[ -e /etc/centos-release || -e /etc/redhat-release ]]; then
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logger debug "turn off selinux in CentOS/Redhat"
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getenforce|grep Disabled || setenforce 0
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sed -i 's/^SELINUX=.*$/SELINUX=disabled/g' /etc/selinux/config
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fi
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logger debug "enable and start docker"
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systemctl enable docker
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systemctl daemon-reload && systemctl restart docker && sleep 4
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}
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function get_kubeasz() {
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# check if kubeasz already existed
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[[ -d "$BASE/roles/kube-node" ]] && { logger warn "kubeasz already existed"; return 0; }
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logger info "downloading kubeasz: $KUBEASZ_VER"
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logger debug " run a temporary container"
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docker run -d --name temp_easz easzlab/kubeasz:${KUBEASZ_VER} || { logger error "download failed."; exit 1; }
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[[ -f "$BASE/down/docker-${DOCKER_VER}.tgz" ]] && /bin/mv -f "$BASE/down/docker-${DOCKER_VER}.tgz" /tmp
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[[ -d "$BASE/bin" ]] && /bin/mv -f "$BASE/bin" /tmp
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rm -rf "$BASE" && \
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logger debug "cp kubeasz code from the temporary container" && \
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docker cp "temp_easz:$BASE" "$BASE" && \
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logger debug "stop&remove temporary container" && \
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docker rm -f temp_easz
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mkdir -p "$BASE/bin" "$BASE/down"
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[[ -f "/tmp/docker-${DOCKER_VER}.tgz" ]] && /bin/mv -f "/tmp/docker-${DOCKER_VER}.tgz" "$BASE/down"
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[[ -d "/tmp/bin" ]] && /bin/mv -f /tmp/bin/* "$BASE/bin"
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return 0
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}
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function get_k8s_bin() {
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[[ -f "$BASE/bin/kubelet" ]] && { logger warn "kubernetes binaries existed"; return 0; }
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logger info "downloading kubernetes: $K8S_BIN_VER binaries"
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docker pull easzlab/kubeasz-k8s-bin:"$K8S_BIN_VER" && \
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logger debug "run a temporary container" && \
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docker run -d --name temp_k8s_bin easzlab/kubeasz-k8s-bin:${K8S_BIN_VER} && \
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logger debug "cp k8s binaries" && \
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docker cp temp_k8s_bin:/k8s "$BASE/k8s_bin_tmp" && \
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/bin/mv -f "$BASE"/k8s_bin_tmp/* "$BASE/bin" && \
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logger debug "stop&remove temporary container" && \
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docker rm -f temp_k8s_bin && \
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rm -rf "$BASE/k8s_bin_tmp"
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}
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function get_ext_bin() {
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[[ -f "$BASE/bin/etcdctl" ]] && { logger warn "extra binaries existed"; return 0; }
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logger info "downloading extral binaries kubeasz-ext-bin:$EXT_BIN_VER"
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docker pull "easzlab/kubeasz-ext-bin:$EXT_BIN_VER" && \
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logger debug "run a temporary container" && \
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docker run -d --name temp_ext_bin "easzlab/kubeasz-ext-bin:$EXT_BIN_VER" && \
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logger debug "cp extral binaries" && \
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docker cp temp_ext_bin:/extra "$BASE/extra_bin_tmp" && \
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/bin/mv -f "$BASE"/extra_bin_tmp/* "$BASE/bin" && \
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logger debug "stop&remove temporary container" && \
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docker rm -f temp_ext_bin && \
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rm -rf "$BASE/extra_bin_tmp"
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}
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function get_sys_pkg() {
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[[ -f "$BASE/down/packages/chrony_xenial.tar.gz" ]] && { logger warn "system packages existed"; return 0; }
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logger info "downloading system packages kubeasz-sys-pkg:$SYS_PKG_VER"
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docker pull "easzlab/kubeasz-sys-pkg:$SYS_PKG_VER" && \
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logger debug "run a temporary container" && \
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docker run -d --name temp_sys_pkg "easzlab/kubeasz-sys-pkg:$SYS_PKG_VER" && \
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logger debug "cp system packages" && \
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docker cp temp_sys_pkg:/packages "$BASE/down" && \
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logger debug "stop&remove temporary container" && \
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docker rm -f temp_sys_pkg
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}
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function get_harbor_offline_pkg() {
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[[ -f "$BASE/down/harbor-offline-installer-$HARBOR_VER.tgz" ]] && { logger warn "harbor-offline existed"; return 0; }
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logger info "downloading harbor-offline:$HARBOR_VER"
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docker pull "easzlab/harbor-offline:$HARBOR_VER" && \
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logger debug "run a temporary container" && \
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docker run -d --name temp_harbor "easzlab/harbor-offline:$HARBOR_VER" && \
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logger debug "cp harbor-offline installer package" && \
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docker cp "temp_harbor:/harbor-offline-installer-$HARBOR_VER.tgz" "$BASE/down" && \
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logger debug "stop&remove temporary container" && \
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docker rm -f temp_harbor
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}
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function get_offline_image() {
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imageDir="$BASE/down"
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logger info "downloading offline images"
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if [[ ! -f "$imageDir/calico_$calicoVer.tar" ]];then
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docker pull "calico/cni:$calicoVer" && \
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docker pull "calico/pod2daemon-flexvol:$calicoVer" && \
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docker pull "calico/kube-controllers:$calicoVer" && \
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docker pull "calico/node:$calicoVer" && \
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docker save -o "$imageDir/calico_$calicoVer.tar" "calico/cni:$calicoVer" "calico/kube-controllers:$calicoVer" "calico/node:$calicoVer" "calico/pod2daemon-flexvol:$calicoVer"
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fi
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if [[ ! -f "$imageDir/coredns_$corednsVer.tar" ]];then
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docker pull "coredns/coredns:$corednsVer" && \
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docker save -o "$imageDir/coredns_$corednsVer.tar" "coredns/coredns:$corednsVer"
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fi
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if [[ ! -f "$imageDir/k8s-dns-node-cache_$dnsNodeCacheVer.tar" ]];then
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docker pull "easzlab/k8s-dns-node-cache:$dnsNodeCacheVer" && \
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docker save -o "$imageDir/k8s-dns-node-cache_$dnsNodeCacheVer.tar" "easzlab/k8s-dns-node-cache:$dnsNodeCacheVer"
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fi
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if [[ ! -f "$imageDir/dashboard_$dashboardVer.tar" ]];then
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docker pull "kubernetesui/dashboard:$dashboardVer" && \
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docker save -o "$imageDir/dashboard_$dashboardVer.tar" "kubernetesui/dashboard:$dashboardVer"
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fi
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if [[ ! -f "$imageDir/flannel_$flannelVer.tar" ]];then
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docker pull "easzlab/flannel:$flannelVer" && \
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docker save -o "$imageDir/flannel_$flannelVer.tar" "easzlab/flannel:$flannelVer"
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fi
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if [[ ! -f "$imageDir/metrics-scraper_$dashboardMetricsScraperVer.tar" ]];then
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docker pull "kubernetesui/metrics-scraper:$dashboardMetricsScraperVer" && \
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docker save -o "$imageDir/metrics-scraper_$dashboardMetricsScraperVer.tar" "kubernetesui/metrics-scraper:$dashboardMetricsScraperVer"
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fi
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if [[ ! -f "$imageDir/metrics-server_$metricsVer.tar" ]];then
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docker pull "mirrorgooglecontainers/metrics-server-amd64:$metricsVer" && \
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docker save -o "$imageDir/metrics-server_$metricsVer.tar" "mirrorgooglecontainers/metrics-server-amd64:$metricsVer"
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fi
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if [[ ! -f "$imageDir/pause_$pauseVer.tar" ]];then
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docker pull "easzlab/pause-amd64:$pauseVer" && \
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docker save -o "$imageDir/pause_$pauseVer.tar" "easzlab/pause-amd64:$pauseVer"
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/bin/cp -u "$imageDir/pause_$pauseVer.tar" "$imageDir/pause.tar"
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fi
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if [[ ! -f "$imageDir/nfs-provisioner_$nfsProvisionerVer.tar" ]];then
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docker pull "easzlab/nfs-subdir-external-provisioner:$nfsProvisionerVer" && \
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docker save -o "$imageDir/nfs-provisioner_$nfsProvisionerVer.tar" "easzlab/nfs-subdir-external-provisioner:$nfsProvisionerVer"
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fi
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if [[ ! -f "$imageDir/kubeasz_$KUBEASZ_VER.tar" ]];then
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docker pull "easzlab/kubeasz:$KUBEASZ_VER" && \
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docker save -o "$imageDir/kubeasz_$KUBEASZ_VER.tar" "easzlab/kubeasz:$KUBEASZ_VER"
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fi
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}
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function download_all() {
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mkdir -p /opt/kube/bin "$BASE/down" "$BASE/bin"
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download_docker && \
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install_docker && \
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get_kubeasz && \
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get_k8s_bin && \
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get_ext_bin && \
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get_offline_image
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}
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function start_kubeasz_docker() {
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[[ -d "$BASE/roles/kube-node" ]] || { logger error "not initialized. try 'ezdown -D' first."; exit 1; }
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logger info "try to run kubeasz in a container"
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# get host's IP
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host_if=$(ip route|grep default|cut -d' ' -f5)
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host_ip=$(ip a|grep "$host_if$"|awk '{print $2}'|cut -d'/' -f1)
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logger debug "get host IP: $host_ip"
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# allow ssh login using key locally
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if [[ ! -e /root/.ssh/id_rsa ]]; then
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logger debug "generate ssh key pair"
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ssh-keygen -t rsa -b 2048 -N '' -f /root/.ssh/id_rsa > /dev/null
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cat /root/.ssh/id_rsa.pub >> /root/.ssh/authorized_keys
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ssh-keyscan -t ecdsa -H "$host_ip" >> /root/.ssh/known_hosts
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fi
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# create a link '/usr/bin/python' in Ubuntu1604
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if [[ ! -e /usr/bin/python && -e /etc/debian_version ]]; then
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logger debug "create a soft link '/usr/bin/python'"
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ln -s /usr/bin/python3 /usr/bin/python
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fi
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#
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docker load -i "$BASE/down/kubeasz_$KUBEASZ_VER.tar"
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# run kubeasz docker container
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docker run --detach \
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--name kubeasz \
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--restart always \
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--env HOST_IP="$host_ip" \
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--volume "$BASE":"$BASE" \
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--volume /root/.kube:/root/.kube \
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--volume /root/.ssh:/root/.ssh \
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easzlab/kubeasz:${KUBEASZ_VER} sleep 36000
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}
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function clean_container() {
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logger info "clean all running containers"
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docker ps -a|awk 'NR>1{print $1}'|xargs docker rm -f
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}
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### Main Lines ##################################################
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function main() {
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BASE="/etc/kubeasz"
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# check if use bash shell
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readlink /proc/$$/exe|grep -q "dash" && { logger error "you should use bash shell, not sh"; exit 1; }
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# check if use with root
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[[ "$EUID" -ne 0 ]] && { logger error "you should run this script as root"; exit 1; }
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[[ "$#" -eq 0 ]] && { usage >&2; exit 1; }
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ACTION=""
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while getopts "CDPRSd:e:k:m:p:z:" OPTION; do
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case "$OPTION" in
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C)
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ACTION="clean_container"
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;;
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D)
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ACTION="download_all"
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;;
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P)
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ACTION="get_sys_pkg"
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;;
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R)
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ACTION="get_harbor_offline_pkg"
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;;
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S)
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ACTION="start_kubeasz_docker"
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;;
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d)
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DOCKER_VER="$OPTARG"
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;;
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e)
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EXT_BIN_VER="$OPTARG"
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;;
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k)
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K8S_BIN_VER="$OPTARG"
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;;
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m)
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REGISTRY_MIRROR="$OPTARG"
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;;
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p)
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SYS_PKG_VER="$OPTARG"
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;;
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z)
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KUBEASZ_VER="$OPTARG"
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;;
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?)
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usage
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exit 1
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;;
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esac
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done
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[[ "$ACTION" == "" ]] && { logger error "illegal option"; usage; exit 1; }
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# excute cmd "$ACTION"
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logger info "Action begin: $ACTION"
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${ACTION} || { logger error "Action failed: $ACTION"; return 1; }
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logger info "Action successed: $ACTION"
|
|
}
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|
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main "$@"
|