mirror of https://github.com/k3s-io/k3s
152 lines
4.8 KiB
Bash
Executable File
152 lines
4.8 KiB
Bash
Executable File
#!/bin/bash
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# Copyright 2015 The Kubernetes Authors All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# A scripts to install k8s worker node.
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# Author @wizard_cxy @reouser
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set -e
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# Make sure docker daemon is running
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if ( ! ps -ef | grep "/usr/bin/docker" | grep -v 'grep' &> /dev/null ); then
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echo "Docker is not running on this machine!"
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exit 1
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fi
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# Make sure k8s version env is properly set
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if [ -z ${K8S_VERSION} ]; then
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echo "Please export K8S_VERSION in your env"
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exit 1
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else
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echo "k8s version is set to: ${K8S_VERSION}"
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fi
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# Run as root
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if [ "$(id -u)" != "0" ]; then
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echo >&2 "Please run as root"
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exit 1
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fi
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# Check if a command is valid
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command_exists() {
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command -v "$@" > /dev/null 2>&1
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}
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lsb_dist=""
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# Detect the OS distro, we support ubuntu, debian, mint, centos, fedora dist
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detect_lsb() {
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case "$(uname -m)" in
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*64)
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;;
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*)
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echo "Error: We currently only support 64-bit platforms."
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exit 1
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;;
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esac
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if command_exists lsb_release; then
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lsb_dist="$(lsb_release -si)"
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fi
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if [ -z ${lsb_dist} ] && [ -r /etc/lsb-release ]; then
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lsb_dist="$(. /etc/lsb-release && echo "$DISTRIB_ID")"
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fi
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if [ -z ${lsb_dist} ] && [ -r /etc/debian_version ]; then
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lsb_dist='debian'
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fi
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if [ -z ${lsb_dist} ] && [ -r /etc/fedora-release ]; then
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lsb_dist='fedora'
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fi
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if [ -z ${lsb_dist} ] && [ -r /etc/os-release ]; then
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lsb_dist="$(. /etc/os-release && echo "$ID")"
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fi
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lsb_dist="$(echo ${lsb_dist} | tr '[:upper:]' '[:lower:]')"
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}
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# Start the bootstrap daemon
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bootstrap_daemon() {
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sudo -b docker -d -H unix:///var/run/docker-bootstrap.sock -p /var/run/docker-bootstrap.pid --iptables=false --ip-masq=false --bridge=none --graph=/var/lib/docker-bootstrap 2> /var/log/docker-bootstrap.log 1> /dev/null
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sleep 5
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}
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# Start k8s components in containers
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DOCKER_CONF=""
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start_k8s(){
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# Start etcd
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docker -H unix:///var/run/docker-bootstrap.sock run --restart=always --net=host -d gcr.io/google_containers/etcd:2.0.12 /usr/local/bin/etcd --addr=127.0.0.1:4001 --bind-addr=0.0.0.0:4001 --data-dir=/var/etcd/data
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sleep 5
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# Set flannel net config
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docker -H unix:///var/run/docker-bootstrap.sock run --net=host gcr.io/google_containers/etcd:2.0.12 etcdctl set /coreos.com/network/config '{ "Network": "10.1.0.0/16" }'
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# iface may change to a private network interface, eth0 is for default
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flannelCID=$(docker -H unix:///var/run/docker-bootstrap.sock run --restart=always -d --net=host --privileged -v /dev/net:/dev/net quay.io/coreos/flannel:0.5.0 /opt/bin/flanneld -iface="eth0")
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sleep 8
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# Copy flannel env out and source it on the host
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docker -H unix:///var/run/docker-bootstrap.sock cp ${flannelCID}:/run/flannel/subnet.env .
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source subnet.env
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# Configure docker net settings, then restart it
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case "$lsb_dist" in
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fedora|centos|amzn)
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DOCKER_CONF="/etc/sysconfig/docker"
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;;
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ubuntu|debian|linuxmint)
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DOCKER_CONF="/etc/default/docker"
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;;
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esac
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# Append the docker opts
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echo "DOCKER_OPTS=\"\$DOCKER_OPTS --mtu=${FLANNEL_MTU} --bip=${FLANNEL_SUBNET}\"" | sudo tee -a ${DOCKER_CONF}
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# sleep a little bit
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ifconfig docker0 down
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case "$lsb_dist" in
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fedora|centos|amzn)
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yum install bridge-utils && brctl delbr docker0 && systemctl restart docker
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;;
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ubuntu|debian|linuxmint)
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apt-get install bridge-utils && brctl delbr docker0 && service docker restart
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;;
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esac
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# sleep a little bit
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sleep 5
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# Start kubelet & proxy, then start master components as pods
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docker run --net=host --privileged -d -v /sys:/sys:ro -v /var/run/docker.sock:/var/run/docker.sock gcr.io/google_containers/hyperkube:v${K8S_VERSION} /hyperkube kubelet --api-servers=http://localhost:8080 --v=2 --insecure-bind-address=0.0.0.0 --enable-server --hostname-override=127.0.0.1 --config=/etc/kubernetes/manifests-multi
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docker run -d --net=host --privileged gcr.io/google_containers/hyperkube:v${K8S_VERSION} /hyperkube proxy --master=http://127.0.0.1:8080 --v=2
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}
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echo "Detecting your OS distro ..."
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detect_lsb
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echo "Starting bootstrap docker ..."
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bootstrap_daemon
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echo "Starting k8s ..."
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start_k8s
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echo "Master done!"
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