ubuntu物理机上搭建Kubernetes集群 -- master 配置

1. 将  kube-apiserver， kube-controller-manager， kube-scheduler，kubectl 拷贝到/usr/bin目录下

2. 安装etcd

• sudo apt-get install etcd
• 版本  2.2.5
• 修改/usr/lib/systemd/system/etcd.service文件，配置etcd单机版模式

[Unit]
Description=etcd server
Documentation=https://github.com/coreos/etcd
Documentation=man:etcd
After=network.target
Wants=network-online.target

[Service]
WorkingDirectory=/var/lib/etcd/
EnvironmentFile=-/etc/etcd/etcd.conf
Type=notify
User=etcd
PermissionsStartOnly=true

ExecStart=/usr/bin/etcd
Restart=on-failure

#RestartSec=10s
LimitNOFILE=

[Install]
WantedBy=multi-user.target
Alias=etcd2.service
~

• 修改配置文件etc/etcd/etcd.conf

ETCD_ME=default
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_CLIENT_URLS="http://109.105.46.94:2379,http://127.0.0.1:2379"
ETCD_LISTEN_PEER_URLS="http://109.105.46.94:2380"
ETCD_ADVERTISE_CLIENT_URLS="http://109.105.46.94:2379"

• 启动服务 systemctl start etcd

• 检查是否工作

etcdctl set hello world

etcdctl get hello

• 创建网络,后面flannel会使用

etcdctl mk /flannel/network/config '{"Network":"172.17.0.0/16"}'

3. apiserver 配置

• 创建kubernetes API server的配置文件/usr/lib/systemd/system/kube-apiserver.service

[Unit]
After=etcd.service
ConditionFileIsExecutable=/usr/bin/kube-apiserver
Description=Kubernetes API Server
Documentation=https://github.com/GoogleCloudPlatform/kubernetes
Wants=etcd.service

[Service]
ExecStart=/usr/bin/kube-apiserver \
--insecure-bind-address=0.0.0.0 \
--insecure-port= \
--bind-address=0.0.0.0 \
--secure-port= \
--etcd_servers=http://109.105.46.94:2379 \
--service-cluster-ip-range=192.168.0.0/16 \
--service-node-port-range=30000-32767 \
--logtostderr=true \
--v= \
--log-dir=/home/nwlab/kubernetes/logs
Restart=always
RestartSec=

[Install]
WantedBy=multi-user.target

• 启动服务 　

  systemctl daemon-reload
  systemctl start kube-apiserver
  systemctl status kube-apiserver(or journalctl -xe) 

4. controller-manager配置

• 创建配置文件　/usr/lib/systemd/system/kube-controller-manager.service

[Unit]
After=etcd.service
ConditionFileIsExecutable=/usr/bin/kube-controller-manager
Description=Kubernetes Controller Manager
Documentation=https://github.com/GoogleCloudPlatform/kubernetes
Wants=etcd.service

[Service]
ExecStart=/usr/bin/kube-controller-manager \
--master=109.105.46.94: \
--logtostderr=true \
--v= \
--log-dir=/home/nwlab/kubernetes/logs
Restart=always
RestartSec=
[Install]
WantedBy=multi-user.target

• 启动服务

systemctl daemon-reload
systemctl start kube-controller-manager
systemctl status kube-controller-manager(or journalctl -xe) 

5. scheduler配置

• 创建配置文件　/usr/lib/systemd/system/kube-scheduler.service

[Unit]
After=etcd.service
ConditionFileIsExecutable=/usr/bin/kube-scheduler
Description=Kubernetes Scheduler
Documentation=https://github.com/GoogleCloudPlatform/kubernetes
Wants=etcd.service

[Service]
ExecStart=/usr/bin/kube-scheduler \
--master=109.105.46.94：8080 \
--address=0.0.0.0 \
--logtostderr=true\
--v=0 \
--log-dir=/home/nwlab/kubernetes/logs
Restart=always
RestartSec=

[Install]
WantedBy=multi-user.target

• 启动服务

systemctl daemon-reload
systemctl restart kube-scheduler
systemctl status kube-scheduler(or journalctl -xe) 

6.检查  kubectl get componentstatuses