mirror of https://github.com/easzlab/kubeasz.git
431 lines
14 KiB
Bash
431 lines
14 KiB
Bash
#!/bin/bash
|
|
#--------------------------------------------------
|
|
# This script is used for:
|
|
# 1. to download the scripts/binaries/images needed for installing a k8s cluster with kubeasz
|
|
# 2. to run kubeasz in a container (optional)
|
|
# @author: gjmzj
|
|
# @usage: ./ezdown
|
|
# @repo: https://github.com/easzlab/kubeasz
|
|
# @ref: https://github.com/kubeasz/dockerfiles
|
|
#--------------------------------------------------
|
|
set -o nounset
|
|
set -o errexit
|
|
#set -o xtrace
|
|
|
|
# default settings, can be overridden by cmd line options, see usage
|
|
DOCKER_VER=20.10.5
|
|
KUBEASZ_VER=3.0.1
|
|
K8S_BIN_VER=v1.21.0
|
|
EXT_BIN_VER=0.9.2
|
|
SYS_PKG_VER=0.4.1
|
|
HARBOR_VER=v2.1.3
|
|
REGISTRY_MIRROR=CN
|
|
|
|
# images needed by k8s cluster
|
|
calicoVer=v3.15.3
|
|
flannelVer=v0.13.0-amd64
|
|
dnsNodeCacheVer=1.16.0
|
|
corednsVer=1.8.3
|
|
dashboardVer=v2.2.0
|
|
dashboardMetricsScraperVer=v1.0.6
|
|
metricsVer=v0.3.6
|
|
pauseVer=3.2
|
|
nfsProvisionerVer=v4.0.1
|
|
export ciliumVer=v1.4.1
|
|
export kubeRouterVer=v0.3.1
|
|
export kubeOvnVer=v1.5.3
|
|
export promChartVer=12.10.6
|
|
export traefikChartVer=9.12.3
|
|
|
|
function usage() {
|
|
echo -e "\033[33mUsage:\033[0m ezdown [options] [args]"
|
|
cat <<EOF
|
|
option: -{DdekSz}
|
|
-C stop&clean all local containers
|
|
-D download all into "$BASE"
|
|
-P download system packages for offline installing
|
|
-R download Registry(harbor) offline installer
|
|
-S start kubeasz in a container
|
|
-d <ver> set docker-ce version, default "$DOCKER_VER"
|
|
-e <ver> set kubeasz-ext-bin version, default "$EXT_BIN_VER"
|
|
-k <ver> set kubeasz-k8s-bin version, default "$K8S_BIN_VER"
|
|
-m <str> set docker registry mirrors, default "CN"(used in Mainland,China)
|
|
-p <ver> set kubeasz-sys-pkg version, default "$SYS_PKG_VER"
|
|
-z <ver> set kubeasz version, default "$KUBEASZ_VER"
|
|
EOF
|
|
}
|
|
|
|
function logger() {
|
|
TIMESTAMP=$(date +'%Y-%m-%d %H:%M:%S')
|
|
case "$1" in
|
|
debug)
|
|
echo -e "$TIMESTAMP \033[36mDEBUG\033[0m $2"
|
|
;;
|
|
info)
|
|
echo -e "$TIMESTAMP \033[32mINFO\033[0m $2"
|
|
;;
|
|
warn)
|
|
echo -e "$TIMESTAMP \033[33mWARN\033[0m $2"
|
|
;;
|
|
error)
|
|
echo -e "$TIMESTAMP \033[31mERROR\033[0m $2"
|
|
;;
|
|
*)
|
|
;;
|
|
esac
|
|
}
|
|
|
|
function download_docker() {
|
|
if [[ "$REGISTRY_MIRROR" == CN ]];then
|
|
DOCKER_URL="https://mirrors.tuna.tsinghua.edu.cn/docker-ce/linux/static/stable/x86_64/docker-${DOCKER_VER}.tgz"
|
|
else
|
|
DOCKER_URL="https://download.docker.com/linux/static/stable/x86_64/docker-${DOCKER_VER}.tgz"
|
|
fi
|
|
|
|
if [[ -f "$BASE/down/docker-${DOCKER_VER}.tgz" ]];then
|
|
logger warn "docker binaries already existed"
|
|
else
|
|
logger info "downloading docker binaries, version $DOCKER_VER"
|
|
if [[ -e /usr/bin/curl ]];then
|
|
curl -C- -O --retry 3 "$DOCKER_URL" || { logger error "downloading docker failed"; exit 1; }
|
|
else
|
|
wget -c "$DOCKER_URL" || { logger error "downloading docker failed"; exit 1; }
|
|
fi
|
|
/bin/mv -f "./docker-$DOCKER_VER.tgz" "$BASE/down"
|
|
fi
|
|
|
|
tar zxf "$BASE/down/docker-$DOCKER_VER.tgz" -C "$BASE/down" && \
|
|
/bin/cp -f "$BASE"/down/docker/* "$BASE/bin" && \
|
|
/bin/mv -f "$BASE"/down/docker/* /opt/kube/bin && \
|
|
ln -sf /opt/kube/bin/docker /bin/docker
|
|
}
|
|
|
|
function install_docker() {
|
|
# check if a container runtime is already installed
|
|
systemctl status docker|grep Active|grep -q running && { logger warn "docker is already running."; return 0; }
|
|
|
|
logger debug "generate docker service file"
|
|
cat > /etc/systemd/system/docker.service << EOF
|
|
[Unit]
|
|
Description=Docker Application Container Engine
|
|
Documentation=http://docs.docker.io
|
|
[Service]
|
|
Environment="PATH=/opt/kube/bin:/bin:/sbin:/usr/bin:/usr/sbin"
|
|
ExecStartPre=/sbin/iptables -F
|
|
ExecStartPre=/sbin/iptables -X
|
|
ExecStartPre=/sbin/iptables -F -t nat
|
|
ExecStartPre=/sbin/iptables -X -t nat
|
|
ExecStartPre=/sbin/iptables -F -t raw
|
|
ExecStartPre=/sbin/iptables -X -t raw
|
|
ExecStartPre=/sbin/iptables -F -t mangle
|
|
ExecStartPre=/sbin/iptables -X -t mangle
|
|
ExecStart=/opt/kube/bin/dockerd
|
|
ExecStartPost=/sbin/iptables -P INPUT ACCEPT
|
|
ExecStartPost=/sbin/iptables -P OUTPUT ACCEPT
|
|
ExecStartPost=/sbin/iptables -P FORWARD ACCEPT
|
|
ExecReload=/bin/kill -s HUP \$MAINPID
|
|
Restart=on-failure
|
|
RestartSec=5
|
|
LimitNOFILE=infinity
|
|
LimitNPROC=infinity
|
|
LimitCORE=infinity
|
|
Delegate=yes
|
|
KillMode=process
|
|
[Install]
|
|
WantedBy=multi-user.target
|
|
EOF
|
|
|
|
# configuration for dockerd
|
|
mkdir -p /etc/docker
|
|
logger debug "generate docker config: /etc/docker/daemon.json"
|
|
if [[ "$REGISTRY_MIRROR" == CN ]];then
|
|
logger debug "prepare register mirror for $REGISTRY_MIRROR"
|
|
cat > /etc/docker/daemon.json << EOF
|
|
{
|
|
"registry-mirrors": [
|
|
"https://docker.mirrors.ustc.edu.cn",
|
|
"http://hub-mirror.c.163.com"
|
|
],
|
|
"max-concurrent-downloads": 10,
|
|
"log-driver": "json-file",
|
|
"log-level": "warn",
|
|
"log-opts": {
|
|
"max-size": "10m",
|
|
"max-file": "3"
|
|
},
|
|
"data-root": "/var/lib/docker"
|
|
}
|
|
EOF
|
|
else
|
|
logger debug "standard config without registry mirrors"
|
|
cat > /etc/docker/daemon.json << EOF
|
|
{
|
|
"max-concurrent-downloads": 10,
|
|
"log-driver": "json-file",
|
|
"log-level": "warn",
|
|
"log-opts": {
|
|
"max-size": "10m",
|
|
"max-file": "3"
|
|
},
|
|
"data-root": "/var/lib/docker"
|
|
}
|
|
EOF
|
|
fi
|
|
|
|
if [[ -e /etc/centos-release || -e /etc/redhat-release ]]; then
|
|
logger debug "turn off selinux in CentOS/Redhat"
|
|
getenforce|grep Disabled || setenforce 0
|
|
sed -i 's/^SELINUX=.*$/SELINUX=disabled/g' /etc/selinux/config
|
|
fi
|
|
|
|
logger debug "enable and start docker"
|
|
systemctl enable docker
|
|
systemctl daemon-reload && systemctl restart docker && sleep 4
|
|
}
|
|
|
|
function get_kubeasz() {
|
|
# check if kubeasz already existed
|
|
[[ -d "$BASE/roles/kube-node" ]] && { logger warn "kubeasz already existed"; return 0; }
|
|
|
|
logger info "downloading kubeasz: $KUBEASZ_VER"
|
|
logger debug " run a temporary container"
|
|
docker run -d --name temp_easz easzlab/kubeasz:${KUBEASZ_VER} || { logger error "download failed."; exit 1; }
|
|
|
|
[[ -f "$BASE/down/docker-${DOCKER_VER}.tgz" ]] && /bin/mv -f "$BASE/down/docker-${DOCKER_VER}.tgz" /tmp
|
|
[[ -d "$BASE/bin" ]] && /bin/mv -f "$BASE/bin" /tmp
|
|
|
|
rm -rf "$BASE" && \
|
|
logger debug "cp kubeasz code from the temporary container" && \
|
|
docker cp "temp_easz:$BASE" "$BASE" && \
|
|
logger debug "stop&remove temporary container" && \
|
|
docker rm -f temp_easz
|
|
|
|
mkdir -p "$BASE/bin" "$BASE/down"
|
|
[[ -f "/tmp/docker-${DOCKER_VER}.tgz" ]] && /bin/mv -f "/tmp/docker-${DOCKER_VER}.tgz" "$BASE/down"
|
|
[[ -d "/tmp/bin" ]] && /bin/mv -f /tmp/bin/* "$BASE/bin"
|
|
return 0
|
|
}
|
|
|
|
function get_k8s_bin() {
|
|
[[ -f "$BASE/bin/kubelet" ]] && { logger warn "kubernetes binaries existed"; return 0; }
|
|
|
|
logger info "downloading kubernetes: $K8S_BIN_VER binaries"
|
|
docker pull easzlab/kubeasz-k8s-bin:"$K8S_BIN_VER" && \
|
|
logger debug "run a temporary container" && \
|
|
docker run -d --name temp_k8s_bin easzlab/kubeasz-k8s-bin:${K8S_BIN_VER} && \
|
|
logger debug "cp k8s binaries" && \
|
|
docker cp temp_k8s_bin:/k8s "$BASE/k8s_bin_tmp" && \
|
|
/bin/mv -f "$BASE"/k8s_bin_tmp/* "$BASE/bin" && \
|
|
logger debug "stop&remove temporary container" && \
|
|
docker rm -f temp_k8s_bin && \
|
|
rm -rf "$BASE/k8s_bin_tmp"
|
|
}
|
|
|
|
function get_ext_bin() {
|
|
[[ -f "$BASE/bin/etcdctl" ]] && { logger warn "extra binaries existed"; return 0; }
|
|
|
|
logger info "downloading extral binaries kubeasz-ext-bin:$EXT_BIN_VER"
|
|
docker pull "easzlab/kubeasz-ext-bin:$EXT_BIN_VER" && \
|
|
logger debug "run a temporary container" && \
|
|
docker run -d --name temp_ext_bin "easzlab/kubeasz-ext-bin:$EXT_BIN_VER" && \
|
|
logger debug "cp extral binaries" && \
|
|
docker cp temp_ext_bin:/extra "$BASE/extra_bin_tmp" && \
|
|
/bin/mv -f "$BASE"/extra_bin_tmp/* "$BASE/bin" && \
|
|
logger debug "stop&remove temporary container" && \
|
|
docker rm -f temp_ext_bin && \
|
|
rm -rf "$BASE/extra_bin_tmp"
|
|
}
|
|
|
|
function get_sys_pkg() {
|
|
[[ -f "$BASE/down/packages/chrony_xenial.tar.gz" ]] && { logger warn "system packages existed"; return 0; }
|
|
|
|
logger info "downloading system packages kubeasz-sys-pkg:$SYS_PKG_VER"
|
|
docker pull "easzlab/kubeasz-sys-pkg:$SYS_PKG_VER" && \
|
|
logger debug "run a temporary container" && \
|
|
docker run -d --name temp_sys_pkg "easzlab/kubeasz-sys-pkg:$SYS_PKG_VER" && \
|
|
logger debug "cp system packages" && \
|
|
docker cp temp_sys_pkg:/packages "$BASE/down" && \
|
|
logger debug "stop&remove temporary container" && \
|
|
docker rm -f temp_sys_pkg
|
|
}
|
|
|
|
function get_harbor_offline_pkg() {
|
|
[[ -f "$BASE/down/harbor-offline-installer-$HARBOR_VER.tgz" ]] && { logger warn "harbor-offline existed"; return 0; }
|
|
|
|
logger info "downloading harbor-offline:$HARBOR_VER"
|
|
docker pull "easzlab/harbor-offline:$HARBOR_VER" && \
|
|
logger debug "run a temporary container" && \
|
|
docker run -d --name temp_harbor "easzlab/harbor-offline:$HARBOR_VER" && \
|
|
logger debug "cp harbor-offline installer package" && \
|
|
docker cp "temp_harbor:/harbor-offline-installer-$HARBOR_VER.tgz" "$BASE/down" && \
|
|
logger debug "stop&remove temporary container" && \
|
|
docker rm -f temp_harbor
|
|
}
|
|
|
|
function get_offline_image() {
|
|
imageDir="$BASE/down"
|
|
logger info "downloading offline images"
|
|
|
|
if [[ ! -f "$imageDir/calico_$calicoVer.tar" ]];then
|
|
docker pull "calico/cni:$calicoVer" && \
|
|
docker pull "calico/pod2daemon-flexvol:$calicoVer" && \
|
|
docker pull "calico/kube-controllers:$calicoVer" && \
|
|
docker pull "calico/node:$calicoVer" && \
|
|
docker save -o "$imageDir/calico_$calicoVer.tar" "calico/cni:$calicoVer" "calico/kube-controllers:$calicoVer" "calico/node:$calicoVer" "calico/pod2daemon-flexvol:$calicoVer"
|
|
fi
|
|
if [[ ! -f "$imageDir/coredns_$corednsVer.tar" ]];then
|
|
docker pull "coredns/coredns:$corednsVer" && \
|
|
docker save -o "$imageDir/coredns_$corednsVer.tar" "coredns/coredns:$corednsVer"
|
|
fi
|
|
if [[ ! -f "$imageDir/k8s-dns-node-cache_$dnsNodeCacheVer.tar" ]];then
|
|
docker pull "easzlab/k8s-dns-node-cache:$dnsNodeCacheVer" && \
|
|
docker save -o "$imageDir/k8s-dns-node-cache_$dnsNodeCacheVer.tar" "easzlab/k8s-dns-node-cache:$dnsNodeCacheVer"
|
|
fi
|
|
if [[ ! -f "$imageDir/dashboard_$dashboardVer.tar" ]];then
|
|
docker pull "kubernetesui/dashboard:$dashboardVer" && \
|
|
docker save -o "$imageDir/dashboard_$dashboardVer.tar" "kubernetesui/dashboard:$dashboardVer"
|
|
fi
|
|
if [[ ! -f "$imageDir/flannel_$flannelVer.tar" ]];then
|
|
docker pull "easzlab/flannel:$flannelVer" && \
|
|
docker save -o "$imageDir/flannel_$flannelVer.tar" "easzlab/flannel:$flannelVer"
|
|
fi
|
|
if [[ ! -f "$imageDir/metrics-scraper_$dashboardMetricsScraperVer.tar" ]];then
|
|
docker pull "kubernetesui/metrics-scraper:$dashboardMetricsScraperVer" && \
|
|
docker save -o "$imageDir/metrics-scraper_$dashboardMetricsScraperVer.tar" "kubernetesui/metrics-scraper:$dashboardMetricsScraperVer"
|
|
fi
|
|
if [[ ! -f "$imageDir/metrics-server_$metricsVer.tar" ]];then
|
|
docker pull "mirrorgooglecontainers/metrics-server-amd64:$metricsVer" && \
|
|
docker save -o "$imageDir/metrics-server_$metricsVer.tar" "mirrorgooglecontainers/metrics-server-amd64:$metricsVer"
|
|
fi
|
|
if [[ ! -f "$imageDir/pause_$pauseVer.tar" ]];then
|
|
docker pull "easzlab/pause-amd64:$pauseVer" && \
|
|
docker save -o "$imageDir/pause_$pauseVer.tar" "easzlab/pause-amd64:$pauseVer"
|
|
/bin/cp -u "$imageDir/pause_$pauseVer.tar" "$imageDir/pause.tar"
|
|
fi
|
|
if [[ ! -f "$imageDir/nfs-provisioner_$nfsProvisionerVer.tar" ]];then
|
|
docker pull "easzlab/nfs-subdir-external-provisioner:$nfsProvisionerVer" && \
|
|
docker save -o "$imageDir/nfs-provisioner_$nfsProvisionerVer.tar" "easzlab/nfs-subdir-external-provisioner:$nfsProvisionerVer"
|
|
fi
|
|
if [[ ! -f "$imageDir/kubeasz_$KUBEASZ_VER.tar" ]];then
|
|
docker pull "easzlab/kubeasz:$KUBEASZ_VER" && \
|
|
docker save -o "$imageDir/kubeasz_$KUBEASZ_VER.tar" "easzlab/kubeasz:$KUBEASZ_VER"
|
|
fi
|
|
}
|
|
|
|
function download_all() {
|
|
mkdir -p /opt/kube/bin "$BASE/down" "$BASE/bin"
|
|
download_docker && \
|
|
install_docker && \
|
|
get_kubeasz && \
|
|
get_k8s_bin && \
|
|
get_ext_bin && \
|
|
get_offline_image
|
|
}
|
|
|
|
function start_kubeasz_docker() {
|
|
[[ -d "$BASE/roles/kube-node" ]] || { logger error "not initialized. try 'ezdown -D' first."; exit 1; }
|
|
|
|
logger info "try to run kubeasz in a container"
|
|
# get host's IP
|
|
host_if=$(ip route|grep default|cut -d' ' -f5)
|
|
host_ip=$(ip a|grep "$host_if$"|awk '{print $2}'|cut -d'/' -f1)
|
|
logger debug "get host IP: $host_ip"
|
|
|
|
# allow ssh login using key locally
|
|
if [[ ! -e /root/.ssh/id_rsa ]]; then
|
|
logger debug "generate ssh key pair"
|
|
ssh-keygen -t rsa -b 2048 -N '' -f /root/.ssh/id_rsa > /dev/null
|
|
cat /root/.ssh/id_rsa.pub >> /root/.ssh/authorized_keys
|
|
ssh-keyscan -t ecdsa -H "$host_ip" >> /root/.ssh/known_hosts
|
|
fi
|
|
|
|
# create a link '/usr/bin/python' in Ubuntu1604
|
|
if [[ ! -e /usr/bin/python && -e /etc/debian_version ]]; then
|
|
logger debug "create a soft link '/usr/bin/python'"
|
|
ln -s /usr/bin/python3 /usr/bin/python
|
|
fi
|
|
|
|
#
|
|
docker load -i "$BASE/down/kubeasz_$KUBEASZ_VER.tar"
|
|
|
|
# run kubeasz docker container
|
|
docker run --detach \
|
|
--name kubeasz \
|
|
--restart always \
|
|
--env HOST_IP="$host_ip" \
|
|
--volume "$BASE":"$BASE" \
|
|
--volume /root/.kube:/root/.kube \
|
|
--volume /root/.ssh:/root/.ssh \
|
|
easzlab/kubeasz:${KUBEASZ_VER} sleep 36000
|
|
}
|
|
|
|
function clean_container() {
|
|
logger info "clean all running containers"
|
|
docker ps -a|awk 'NR>1{print $1}'|xargs docker rm -f
|
|
}
|
|
|
|
|
|
### Main Lines ##################################################
|
|
function main() {
|
|
BASE="/etc/kubeasz"
|
|
|
|
# check if use bash shell
|
|
readlink /proc/$$/exe|grep -q "dash" && { logger error "you should use bash shell, not sh"; exit 1; }
|
|
# check if use with root
|
|
[[ "$EUID" -ne 0 ]] && { logger error "you should run this script as root"; exit 1; }
|
|
|
|
[[ "$#" -eq 0 ]] && { usage >&2; exit 1; }
|
|
|
|
ACTION=""
|
|
while getopts "CDPRSd:e:k:m:p:z:" OPTION; do
|
|
case "$OPTION" in
|
|
C)
|
|
ACTION="clean_container"
|
|
;;
|
|
D)
|
|
ACTION="download_all"
|
|
;;
|
|
P)
|
|
ACTION="get_sys_pkg"
|
|
;;
|
|
R)
|
|
ACTION="get_harbor_offline_pkg"
|
|
;;
|
|
S)
|
|
ACTION="start_kubeasz_docker"
|
|
;;
|
|
d)
|
|
DOCKER_VER="$OPTARG"
|
|
;;
|
|
e)
|
|
EXT_BIN_VER="$OPTARG"
|
|
;;
|
|
k)
|
|
K8S_BIN_VER="$OPTARG"
|
|
;;
|
|
m)
|
|
REGISTRY_MIRROR="$OPTARG"
|
|
;;
|
|
p)
|
|
SYS_PKG_VER="$OPTARG"
|
|
;;
|
|
z)
|
|
KUBEASZ_VER="$OPTARG"
|
|
;;
|
|
?)
|
|
usage
|
|
exit 1
|
|
;;
|
|
esac
|
|
done
|
|
|
|
[[ "$ACTION" == "" ]] && { logger error "illegal option"; usage; exit 1; }
|
|
|
|
# excute cmd "$ACTION"
|
|
logger info "Action begin: $ACTION"
|
|
${ACTION} || { logger error "Action failed: $ACTION"; return 1; }
|
|
logger info "Action successed: $ACTION"
|
|
}
|
|
|
|
main "$@"
|