centos7二进制部署Kubernetes
centos7部署Kubernetes
- 自建DNS服务
-
- (1) 修改主配置文件 /etc/named.conf
- (2) 区域配置文件/etc/named.rfc1912.zones
- (3) 主机域配置文件/var/namd/host.com.zone
- (4) 主机域配置文件/var/namd/od.com.zone
- (5) 验证解析
- 安装docker
-
- (1) 设置镜像仓库地址
- (2) 配置国内镜像加速文件
- 安装私有仓库harbor
-
- (1) 下载安装
- (2) 修改配置参数
- (3) 基于docker-compose启动harbor
- 安装nginx
-
- (1)下载安装
- (2) 配置文件
- (3) 新建仓库项目并推送镜像
- 自建CA证书
-
- 证书下载地址：
- 创建证书目录
- (1) 生成配置文件模板
- (2) 创建CA证书请求文件
- (3) 生成CA证书及密钥
- (4) 创建etcd证书请求文件
- (5) 生成etcd证书及密钥
- 安装etcd
-
- etcd下载地址：
- (1) 拷贝证书、私钥
- (2) 创建启etcd启动脚本
- (3)下载依赖软件，supervisor管理后台进程软件
- 安装api-server
-
- 下载地址：
- (1) 签发client证书 （api-server{client}-->etcd{server}）
-
- 创建生成证书签名请求(csr)json配置文件（client）
- 创建生成证书签名请求(csr)json配置文件（server）
- (2) 拷贝证书文件(私钥文件属性600)
- (3) 配置api-server启动脚本
- 部署4层反向代理
-
- (1) 安装nginx
- 部署keepalived实现api-server双活
-
- (1) yum安装
- 部署kube-controller-manager和kube-scheduler
-
- (1) 配置kube-controller-manager启动脚本
- (2) 创建supervisor配置
- (3) 配置kube-scheduler启动脚本
- (4) 创建supervisor配置
- 部署kubelet运算节点服务
-
- (1) 创建证书配置
- (2) 拷贝证书
- (2) 创建配置
-
- set-cluster集群参数
- set-credentials客户端认证参数
- set-context上下文参数
- use-context默认上下文
- (3) 绑定授权运算角色权限
- (4) 启动kubelet服务
- (5) 创建supervisor配置
- 部署kube-proxy服务
-
- (1) 签发证书
- (2) 拷贝证书
- (3) 创建配置
-
- set-cluster集群参数
- set-credentials客户端认证参数
- set-context上下文参数
- use-context默认上下文
- (4)加载ipvs模块
- (5) 创建启动脚本
- (6) 创建supervisor配置
- (7) 验证集群可用性
节点：
192.168.108.128 7-11 (DNS)
192.168.108.129 7-12
192.168.108.130 7-21
192.168.108.131 7-22
192.168.108.132 7-200
安装基本工具
yum install epel-release -y
yum install wget net-tools telnet tree namp lrzsz bind-utils -y
yum install bind -y（安装在某个节点即可，我这选择108.128节点）
自建DNS服务
- 安装节点（128）
(1) 修改主配置文件 /etc/named.conf
修改项：
listen-on port 53 { any; }; 监听端口
allow-query { any; }; 所有主机可以解析
recursion yes; 递归查询
named-checkconf 检查不报错
(2) 区域配置文件/etc/named.rfc1912.zones
zone "host.com" IN {
type master;
file "host.com.zone"; #正向解析（名称自定义）
allow-update { 192.168.108.128; };
};
zone "od.com" IN {
type master;
file "od.com.zone"; #正向解析（名称自定义）
allow-update { 192.168.108.128; };
};
(3) 主机域配置文件/var/namd/host.com.zone
$ORIGIN host.com.
$TTL 600
@ IN SOA dns.host.com. dnsadmin.host.com. (
2021070601; serial # 版本号
10800; refresh # 刷新时间
900; retry # 重试时间
604800; expire # 过期时间
86400; minimum # 否定答案缓存时间
)
NS dns.host.com.
$TTL 60
dns A 192.168.108.128
ceshi-128 A 192.168.108.128
ceshi-129 A 192.168.108.129
ceshi-130 A 192.168.108.130
ceshi-131 A 192.168.108.131
ceshi-132 A 192.168.108.132
(4) 主机域配置文件/var/namd/od.com.zone
$ORIGIN od.com.
$TTL 600
@ IN SOA dns.od.com. dnsadmin.od.com. (
2021070601; serial
10800; refresh
900; retry
604800; expire
86400; minimum
)
NS dns.od.com.
$TTL 60
dns A 192.168.108.128
A记录： 将FQDN解析到IPV4
CHAME： 别名
MX记录： 邮箱服务
NS记录： 域名解析服务器记录，如将子域名指定某个域服务器解析，需要设置NS
AAAA记录：IPV6域名解析
SOA记录： 起始授权机构记录，NS用于标识多台域名解析服务器，SOA记录那台是主服务
PTR记录： 逆向解析，将IPV4解析到FQDN
TTL值： 缓存时间
(5) 验证解析
重启DNS服务
[root@ceshi-128 ~]# systemctl restart named
[root@ceshi-128 ~]# systemctl enable named
将DNS写入网卡配置文件（添加/etc/resolv.conf重启实例后会失效）
[root@ceshi-128 ~]# echo "DNS1=192.168.108.128" >> /etc/sysconfig/network-scripts/ifcfg-ens33
重启网卡服务
[root@ceshi-128 ~]# systemctl restart network
测试域名解析
[root@ceshi-128 ~]# dig -t A ceshi-130.host.com +short
192.168.108.130
安装docker
(1) 设置镜像仓库地址
- 安装节点（130 131 132）
[root@ceshi-132 ~]# yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
[root@ceshi-132 ~]# yum makecache fast
[root@ceshi-132 ~]# yum -y install docker-ce
[root@ceshi-132 ~]# systemctl start docker
(2) 配置国内镜像加速文件
[root@ceshi-132 docker]# cat daemon.json
{
"graph": "/data/docker",
"storage-driver": "overlay2", #使用的存储驱动程序
#设置私有仓库地址
"insecure-registries": ["registry.access.redhat.com","quay.io","harbor.od.com"],
"registry-mirrors": ["https://hub-mirror.c.163.com"], #国内镜像加速地址
"bip": "192.168.108.1/24", #指定网桥IP 172.7.21.1(次文档各节点修改不同)
"exec-opts": ["native.cgroupdriver=systemd"], #运行时执行选项
"live-restore": true #在容器仍在运行时启用docker的实时还原
}
[root@ceshi-132 docker]# systemctl daemon-reload
[root@ceshi-132 docker]# systemctl restart docker
[root@ceshi-132 ~]# docker pull hello-world
Using default tag: latest
latest: Pulling from library/hello-world
b8dfde127a29: Pull complete
Digest: sha256:df5f5184104426b65967e016ff2ac0bfcd44ad7899ca3bbcf8e44e4461491a9e
Status: Downloaded newer image for hello-world:latest
docker.io/library/hello-world:latest
安装私有仓库harbor
- 安装节点（132）
(1) 下载安装
[root@ceshi-132 ~]# wget https://github.com/goharbor/harbor/releases/download/v2.2.1/harbor-offline-installer-v2.2.1.tgz
[root@ceshi-132 ~]# tar -xf harbor-offline-installer-v2.2.1.tgz -C /usr/local/
[root@ceshi-132 ~]# mv harbor/ harbor-v2.2.1
[root@ceshi-132 ~]# ln -s /usr/local/harbor-v2.2.1/ /usr/local/harbor
(2) 修改配置参数
[root@ceshi-132 ~]# mkdir -p /data/harbor/logs
[root@ceshi-132 ~]# yum install docker-compose -y
[root@ceshi-132 ~]# vi /usr/local/harbor/harbor.yml
修改项：
hostname: harbor.od.com
http:
port: 180
harbor_admin_password: 12345
location: /data/harbor/logs
[root@ceshi-132 ~]# /usr/local/harbor/install.sh
安装报错：
prepare base dir is set to /usr/local/harbor-v2.2.1
Error happened in config validation...
ERROR:root:Error: The protocol is https but attribute ssl_cert is not set
解决方法：
注释ssl部分
重新install.sh
(3) 基于docker-compose启动harbor
[root@ceshi-132 harbor]# pwd
/usr/local/harbor
[root@ceshi-132 harbor]# docker-compose up -d
安装nginx
(1)下载安装
- 安装节点（132）
安装依赖：
[root@ceshi-132 harbor]#yum install gcc-c++ pcre pcre-devel zlib zlib-devel openssl openssl-devel -y
[root@ceshi-132 harbor]# wget http://tengine.taobao.org/download/tengine-2.2.0.tar.gz
[root@ceshi-132 harbor]# tar xf tengine-2.2.0.tar.gz -C /usr/local
[root@ceshi-132 harbor]# cd /usr/local/tengine-2.2.0/
[root@ceshi-132 harbor]# ./configure
[root@ceshi-132 harbor]# make && make install
(2) 配置文件
vi /usr/local/nginx/conf.d/harbor.od.com.conf
server {
listen 80;
server_name harbor.od.com; # 使用自建域名
client_max_body_size 1000m;
location / {
proxy_pass http://127.0.0.1:180; #代理harbor地址
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
}
在128DNS上增加一条A记录，用于解析访问harbor域名
修改地址： /var/named/od.com.zone
[root@ceshi-128 named]# systemctl restart named
[root@ceshi-128 named]# dig -t A harbor.od.com +short
192.168.108.132
(3) 新建仓库项目并推送镜像
下载nginx镜像
[root@ceshi-132 ~]# docker pull nginx:1.7.9
为下载镜像打标签
[root@ceshi-132 ~]# docker tag 84581e99d807 harhor.od.com/public/nginx:v1.7.9
登陆私有仓库
[root@ceshi-132 ~]# docker login harbor.od.com
Username：admin
Password：******
[root@ceshi-132 ~]# docker push harbor.od.com/public/nginx:v1.7.9
The push refers to repository [harbor.od.com/public/nginx]
5f70bf18a086: Layer already exists
4b26ab29a475: Layer already exists
ccb1d68e3fb7: Layer already exists
e387107e2065: Layer already exists
63bf84221cce: Layer already exists
e02dce553481: Layer already exists
dea2e4984e29: Layer already exists
v1.7.9: digest: sha256:b1f5935eb2e9e2ae89c0b3e2e148c19068d91ca502e857052f14db230443e4c2 size: 3012
自建CA证书
- 安装节点（132）
证书下载地址：
wget https://pkg.cfssl.org/R1.2/cfssl_linux-amd64 -O /usr/bin/cfssl
wget https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64 -O /usr/bin/cfssljson
wget https://pkg.cfssl.org/R1.2/cfssl-certinfo_linux-amd64 -O /usr/bin/cfssl-certinfo
chmod +x /usr/bin/cfssl*
创建证书目录
- 安装节点（132）
[root@ceshi-132 ~]# mkdir -p /opt/certs/
(1) 生成配置文件模板
[root@ceshi-132 certs]# cat ca-config.json
{
"signing": {
"default": {
"expiry": "175200h" #过期时间
},
"profiles": {
"server": {
"expiry": "175200h",
"usages": [
"signing",
"key encipherment",
"server auth" #表示客户端可以用该证书对服务端验证
]
},
"client": {
"expiry": "175200h",
"usages": [
"signing",
"key encipherment",
"client auth" #表示服务端可以用该证书对服务端验证
]
},
"peer": {
"expiry": "175200h",
"usages": [
"signing",
"key encipherment",
"server auth",
"client auth"
]
}
}
}
}
(2) 创建CA证书请求文件
[root@ceshi-132 certs]# cat ca-csr.json
{
"CN": "k8s-ca", #kube-apiserver请求用户名，浏览器使用该字段验证是否合格
"hosts": [
],
"key": {
"algo": "rsa", #指定算法
"size": 2048
},
"names": [
{
"C": "CN", #国家：验证网站是否合法
"ST": "shanghai", # 州，省：上海
"L": "shanghai", # 城市： 上海
"O": "od", #组织名称
"OU": "ops" #组织单位名称
}
],
"ca": {
"expiry": "175200h" #过期时间
}
}
(3) 生成CA证书及密钥
[root@ceshi-132 certs]# cfssl gencert -initca ca-csr.json | cfssljson -bare ca
[root@ceshi-132 certs]# ll
-rw-r--r-- 1 root root 836 Jul 13 00:57 ca-config.json
-rw-r--r-- 1 root root 993 Jul 13 17:04 ca.csr
-rw-r--r-- 1 root root 327 Jul 13 01:09 ca-csr.json
-rw------- 1 root root 1675 Jul 13 17:04 ca-key.pem
-rw-r--r-- 1 root root 1342 Jul 13 17:04 ca.pem
(4) 创建etcd证书请求文件
[root@ceshi-132 certs]# cat etcd-peer-csr.json
{
"CN": "k8s-etcd",
"hosts": [
"192.168.108.128",
"192.168.108.129",
"192.168.108.130",
"192.168.108.131"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "beijing",
"L": "beijing",
"O": "od",
"OU": "ops"
}
]
}
(5) 生成etcd证书及密钥
[root@ceshi-132 certs]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=peer etcd-peer-csr.json | cfssljson -bare etcd-peer
[root@ceshi-132 certs]# ll ./etcd-peer*
-rw-r--r-- 1 root root 1062 Jul 13 17:23 ./etcd-peer.csr
-rw-r--r-- 1 root root 359 Jul 13 17:11 ./etcd-peer-csr.json
-rw------- 1 root root 1679 Jul 13 17:23 ./etcd-peer-key.pem
-rw-r--r-- 1 root root 1428 Jul 13 17:23 ./etcd-peer.pem
安装etcd
- 安装节点（129 130 131）
etcd下载地址：
[root@ceshi-129 ~]# wget https://github.com/etcd-io/etcd/releases/download/v3.1.20/etcd-v3.1.20-linux-amd64.tar.gz
[root@ceshi-129 ~]# tar -xf etcd-v3.1.20-linux-amd64.tar.gz -C /opt
[root@ceshi-129 opt]# cd /opt/
[root@ceshi-129 opt]# tar -xf etcd-v3.1.20-linux-amd64 etcd-v3.1.20
[root@ceshi-129 opt]# ln -s /opt/etcd-v3.1.20/ /opt/etcd
(1) 拷贝证书、私钥
[root@ceshi-129 opt]# mkdir -p /opt/etcd/certs /data/etcd /date/logs/etcd-server
[root@ceshi-129 opt]# scp root@ceshi-132:/opt/certs/ca.pem .
[root@ceshi-129 opt]# scp root@ceshi-132:/opt/certs/etcd-peer.pem .
[root@ceshi-129 opt]# scp root@ceshi-132:/opt/certs/etcd-peer-key.pem .
[root@ceshi-129 opt]# useradd etcd -s /sbin/nologin -M
[root@ceshi-129 opt]# chown -R etcd.etcd
将主机根证书的 ca.pem etcd.peer-key.pem etcd-peer.pem拷贝到/opt/etcd/certs/目录中，私钥文件权限600
(2) 创建启etcd启动脚本
[root@ceshi-129 etcd]# cat etcd-server-startup.sh
#!/usr/bin/env bash
./etcd --name etcd-server-7-12 \
--data-dir /data/etcd/etcd-server \ #数据存储目录
--listen-peer-urls https://192.168.108.129:2380 \ # 内部etcd集群对端通信2380
--listen-client-urls https://192.168.108.129:2379,http://127.0.0.1:2379 \ #对外server通信2379
--quota-backend-bytes 8000000000 \ #后端配额
--initial-advertise-peer-urls https://192.168.108.129:2380 \
--advertise-client-urls https://192.168.108.129:2379,http://127.0.0.1:2379 \
--initial-cluster etcd-server-7-12=https://192.168.108.129:2380,etcd-server-7-21=https://192.168.108.130:2380,etcd-server-7-22=https://192.168.108.131:2380 \
--ca-file ./certs/ca.pem \ #ca证书路径
--cert-file ./certs/etcd-peer.pem \
--key-file ./certs/etcd-peer-key.pem \
--client-cert-auth \ #验证证书
--trusted-ca-file ./certs/ca.pem \
--peer-ca-file ./certs/ca.pem \ #etcd证书路径
--peer-cert-file ./certs/etcd-peer.pem \
--peer-key-file ./certs/etcd-peer-key.pem \
--peer-client-cert-auth \
--peer-trusted-ca-file ./certs/ca.pem \
--log-output stdout
*配置复制后有部分--需要保留一个空格，否则启动失败*
[root@ceshi-129 etcd]# chmod +x etcd-server-startup.sh
[root@ceshi-129 etcd]# chown -R etcd.etcd /opt/etcd-v3.1.20/
[root@ceshi-129 etcd]# chown -R etcd.etcd /data/etcd/
[root@ceshi-129 etcd]# chown -R etcd.etcd /data/logs/etcd-server/
(3)下载依赖软件，supervisor管理后台进程软件
supervisorctl status #查看所有进程的状态
supervisorctl stop 服务名 #停止服务
supervisorctl start 服务名 #启动服务
supervisorctl restart 服务名 #重启服务
supervisorctl update #配置文件修改后使用该命令加载新的配置
supervisorctl reload #重新启动配置中的所有程序
[root@ceshi-129 etcd]# yum install supervisor -y
[root@ceshi-129 etcd]# systemctl start supervisord
[root@ceshi-129 etcd]# systemctl enable supervisord
[root@ceshi-129 supervisord.d]# cat /etc/supervisord.d/etcd-server.ini
[program:etcd-server] ; 显示的程序名,类型my.cnf,可以有多个
command=/opt/etcd/etcd-server-startup.sh
numprocs=1 ; 启动进程数 (def 1)
directory=/opt/etcd ; 启动命令前切换的目录 (def no cwd)
autostart=true ; 是否自启 (default: true)
autorestart=true ; 是否自动重启 (default: true)
startsecs=30 ; 服务运行多久判断为成功(def. 1)
startretries=3 ; 启动重试次数 (default 3)
exitcodes=0,2 ; 退出状态码 (default 0,2)
stopsignal=QUIT ; 退出信号 (default TERM)
stopwaitsecs=10 ; 退出延迟时间 (default 10)
user=etcd ; 运行用户
redirect_stderr=true ; 是否重定向错误输出到标准输出(def false)
stdout_logfile=/data/logs/etcd-server/etcd.stdout.log
stdout_logfile_maxbytes=64MB ; 日志文件大小 (default 50MB)
stdout_logfile_backups=4 ; 日志文件滚动个数 (default 10)
stdout_capture_maxbytes=1MB ; 设定capture管道的大小(default 0)
;子进程还有子进程,需要添加这个参数,避免产生孤儿进程
;killasgroup=true
;stopasgroup=true
[root@ceshi-129 supervisord.d]# supervisorctl update
[root@ceshi-129 supervisord.d]# supervisorctl status
etcd-server STARTING
[root@ceshi-129 supervisord.d]# supervisorctl status
etcd-server RUNNING pid 2264, uptime 0:33:31
[root@ceshi-129 supervisord.d]# netstat -tnlp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 1223/master
tcp 0 0 192.168.108.129:2379 0.0.0.0:* LISTEN 2265/./etcd
tcp 0 0 127.0.0.1:2379 0.0.0.0:* LISTEN 2265/./etcd
tcp 0 0 192.168.108.129:2380 0.0.0.0:* LISTEN 2265/./etcd
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 986/sshd
tcp6 0 0 ::1:25 :::* LISTEN 1223/master
tcp6 0 0 :::22 :::* LISTEN 986/sshd
[root@ceshi-129 etcd]# supervisorctl status
etcd-server RUNNING pid 2264, uptime 1 day, 1:02:36
[root@ceshi-130 etcd]# supervisorctl status
etcd-server RUNNING pid 2764, uptime 0:01:17
[root@ceshi-131 etcd]# supervisorctl status
etcd-server RUNNING pid 2405, uptime 0:01:17
查看集群状态，129节点为leader
[root@ceshi-129 etcd]# ./etcdctl member list
1bd0c15cd2b58ad4: name=etcd-server-7-22 peerURLs=https://192.168.108.131:2380 clientURLs=http://127.0.0.1:2379,https://192.168.108.131:2379 isLeader=false
d68de1494b70edda: name=etcd-server-7-12 peerURLs=https://192.168.108.129:2380 clientURLs=http://127.0.0.1:2379,https://192.168.108.129:2379 isLeader=true
e18afb5e95efe1ea: name=etcd-server-7-21 peerURLs=https://192.168.108.130:2380 clientURLs=http://127.0.0.1:2379,https://192.168.108.130:2379 isLeader=false
- 其他两节点按照上述步骤，修改etcd-server-7-*(用户名)ip即可
- –initial-cluster 不需要任何修改，次参数为配置集群节点
安装api-server
- 安装节点（130 131）
下载地址：
[root@ceshi-130 ~]# wget https://dl.k8s.io/v1.15.10/kubernetes-server-linux-amd64.tar.gz
[root@ceshi-130 ~]# tar -xf kubernetes-server-linux-amd64.tar.gz -C /opt/
[root@ceshi-130 opt]# mv kubernetes/ kubernetes-v1.15.10
[root@ceshi-130 opt]# ln -s /opt/kubernetes-v1.15.10/ /opt/kubernetes
[root@ceshi-130 opt]# cd kubernetes
删除源码文件
[root@ceshi-130 kubernetes]# rm -fr kubernetes-src.tar.gz
[root@ceshi-130 kubernetes]# cd server/bin/
删除docker镜像tar包
[root@ceshi-130 bin]# rm -fr ./*.tar
[root@ceshi-130 bin]# rm -fr ./*_tag
[root@ceshi-130 bin]# ls
apiextensions-apiserver cloud-controller-manager hyperkube kubeadm kube-apiserver kube-controller-manager kubectl kubelet kube-proxy kube-scheduler mounter
(1) 签发client证书 （api-server{client}–>etcd{server}）
创建生成证书签名请求(csr)json配置文件（client）
- 节点（132）
[root@ceshi-132 certs]# cat /opt/certs/client-csr.json
{
"CN": "k8s-node",
"hosts": [
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "shanghai",
"L": "shanghai",
"O": "od",
"OU": "ops"
}
]
}
[root@ceshi-132 certs]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=client client-csr.json | cfssljson -bare client
创建生成证书签名请求(csr)json配置文件（server）
- 节点（132）
[root@ceshi-132 certs]# cat api-server-csr.json
{
"CN": "k8s-apiserver",
"hosts": [
"127.0.0.1",
"192.168.0.1",
"kubernetes",
"kubernetes.default",
"kubernetes.default.svc",
"kubernetes.default.svc.cluster",
"kubernetes.default.svc.cluster.local",
"192.168.108.128",
"192.168.108.129",
"192.168.108.130",
"192.168.108.131",
"192.168.108.132",
"192.168.108.133"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "beijing",
"ST": "beijing",
"O": "od",
"OU": "ops"
}
]
}
[root@ceshi-132 certs]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=server api-server-csr.json | cfssljson -bare apiserver
[root@ceshi-132 certs]# ll api*
-rw-r--r-- 1 root root 1281 Jul 17 00:29 apiserver.csr
-rw-r--r-- 1 root root 640 Jul 17 00:29 api-server-csr.json
-rw------- 1 root root 1679 Jul 17 00:29 apiserver-key.pem
-rw-r--r-- 1 root root 1631 Jul 17 00:29 apiserver.pem
(2) 拷贝证书文件(私钥文件属性600)
- 安装节点（130 131）
[root@ceshi-130 bin]# mkdir certs
[root@ceshi-130 bin]# cd certs/
[root@ceshi-130 certs]# scp [email protected]:/opt/certs/apiserver-key.pem .
[root@ceshi-130 certs]# scp [email protected]:/opt/certs/apiserver.pem .
[root@ceshi-130 certs]# scp [email protected]:/opt/certs/ca.pem .
[root@ceshi-130 certs]# scp [email protected]:/opt/certs/ca-key.pem .
[root@ceshi-130 certs]# scp [email protected]:/opt/certs/client.pem .
[root@ceshi-130 certs]# scp [email protected]:/opt/certs/client-key.pem .
[root@ceshi-130 certs]# ll
-rw------- 1 root root 1679 Jul 19 10:34 apiserver-key.pem
-rw-r--r-- 1 root root 1631 Jul 19 10:34 apiserver.pem
-rw------- 1 root root 1675 Jul 19 10:34 ca-key.pem
-rw-r--r-- 1 root root 1342 Jul 19 10:34 ca.pem
-rw------- 1 root root 1679 Jul 19 10:35 client-key.pem
-rw-r--r-- 1 root root 1363 Jul 19 10:35 client.pem
[root@ceshi-130 bin]# mkdir conf
配置kube-apiserver审计日志记录和采集
[root@ceshi-130 conf]# vi audit.yaml
apiVersion: audit.k8s.io/v1beta1 # This is required.
kind: Policy
# Don't generate audit events for all requests in RequestReceived stage.
omitStages:
- "RequestReceived"
rules:
# Log pod changes at RequestResponse level
- level: RequestResponse
resources:
- group: ""
# Resource "pods" doesn't match requests to any subresource of pods,
# which is consistent with the RBAC policy.
resources: ["pods"]
# Log "pods/log", "pods/status" at Metadata level
- level: Metadata
resources:
- group: ""
resources: ["pods/log", "pods/status"]
# Don't log requests to a configmap called "controller-leader"
- level: None
resources:
- group: ""
resources: ["configmaps"]
resourceNames: ["controller-leader"]
# Don't log watch requests by the "system:kube-proxy" on endpoints or services
- level: None
users: ["system:kube-proxy"]
verbs: ["watch"]
resources:
- group: "" # core API group
resources: ["endpoints", "services"]
# Don't log authenticated requests to certain non-resource URL paths.
- level: None
userGroups: ["system:authenticated"]
nonResourceURLs:
- "/api*" # Wildcard matching.
- "/version"
# Log the request body of configmap changes in kube-system.
- level: Request
resources:
- group: "" # core API group
resources: ["configmaps"]
# This rule only applies to resources in the "kube-system" namespace.
# The empty string "" can be used to select non-namespaced resources.
namespaces: ["kube-system"]
# Log configmap and secret changes in all other namespaces at the Metadata level.
- level: Metadata
resources:
- group: "" # core API group
resources: ["secrets", "configmaps"]
# Log all other resources in core and extensions at the Request level.
- level: Request
resources:
- group: "" # core API group
- group: "extensions" # Version of group should NOT be included.
# A catch-all rule to log all other requests at the Metadata level.
- level: Metadata
# Long-running requests like watches that fall under this rule will not
# generate an audit event in RequestReceived.
omitStages:
- "RequestReceived"
(3) 配置api-server启动脚本
[root@ceshi-130 bin]# vi kube-apiserver.sh
#!/bin/bash
./kube-apiserver \
--apiserver-count 2 \ # 数量
--audit-log-path /data/logs/kubernetes/kube-apiserver/audit-log \ #日志目录
--audit-policy-file ./conf/audit.yaml \ # 日志审计规则
--authorization-mode RBAC \ #鉴权模式 基于角色访问控制
--client-ca-file ./cert/ca.pem \ #ca证书
--requestheader-client-ca-file ./cert/ca.pem \
--enable-admission-plugins NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,MutatingAdmissionWebhook,ValidatingAdmissionWebhook,ResourceQuota \
--etcd-cafile ./cert/ca.pem \
--etcd-certfile ./cert/client.pem \
--etcd-keyfile ./cert/client-key.pem \
--etcd-servers https://10.4.7.12:2379,https://10.4.7.21:2379,https://10.4.7.22:2379 \
--service-account-key-file ./cert/ca-key.pem \
--service-cluster-ip-range 192.168.0.0/16 \
--service-node-port-range 3000-29999 \
--target-ram-mb=1024 \
--kubelet-client-certificate ./cert/client.pem \
--kubelet-client-key ./cert/client-key.pem \
--log-dir /data/logs/kubernetes/kube-apiserver \
--tls-cert-file ./cert/apiserver.pem \
--tls-private-key-file ./cert/apiserver-key.pem \
--v 2 # 日志级别
[root@ceshi-130 bin]# chmod +x kube-apiserver.sh
[root@ceshi-130 bin]# mkdir -p /data/logs/kubernetes/kube-apiserver/audit-log
配置到后台管理进程中
[root@ceshi-130 supervisord.d]# vi /etc/supervisord.d/api-server.ini
另一台修改[program:kube-apiserver-7-22]标识出不同即可
[program:kube-apiserver-7-22]
command=/opt/kubernetes/server/bin/kube-apiserver.sh ; the program (relative uses PATH, can take args)
numprocs=1 ; number of processes copies to start (def 1)
directory=/opt/kubernetes/server/bin ; directory to cwd to before exec (def no cwd)
autostart=true ; start at supervisord start (default: true)
autorestart=true ; retstart at unexpected quit (default: true)
startsecs=30 ; number of secs prog must stay running (def. 1)
startretries=3 ; max # of serial start failures (default 3)
exitcodes=0,2 ; 'expected' exit codes for process (default 0,2)
stopsignal=QUIT ; signal used to kill process (default TERM)
stopwaitsecs=10 ; max num secs to wait b4 SIGKILL (default 10)
user=root ; setuid to this UNIX account to run the program
redirect_stderr=true ; redirect proc stderr to stdout (default false)
stdout_logfile=/data/logs/kubernetes/kube-apiserver/apiserver.stdout.log ; stderr log path, NONE for none; default AUTO
stdout_logfile_maxbytes=64MB ; max # logfile bytes b4 rotation (default 50MB)
stdout_logfile_backups=4 ; # of stdout logfile backups (default 10)
stdout_capture_maxbytes=1MB ; number of bytes in 'capturemode' (default 0)
stdout_events_enabled=false ; emit events on stdout writes (default false)
[root@ceshi-131 supervisord.d]# supervisorctl update
kube-apiserver-7-22: added process group
[root@ceshi-131 bin]# supervisorctl status
etcd-server RUNNING pid 2405, uptime 2 days, 19:47:56
kube-apiserver-7-22 RUNNING pid 3545, uptime 0:03:32
部署4层反向代理
- 安装节点（128 129）
(1) 安装nginx
[root@ceshi-128 ~]# yum install gcc-c++ pcre pcre-devel zlib zlib-devel openssl openssl-devel -y
[root@ceshi-128 ~]# tar -xf tengine-2.3.3.tar.gz -C /usr/local/
[root@ceshi-128 ~]# cd /usr/local/tengine-2.3.3/
[root@ceshi-128 tengine-2.3.3]# ./configure --with-stream
[root@ceshi-128 tengine-2.3.3]# make && make install
[root@ceshi-128 conf]# cat /usr/local/nginx/conf/nginx.conf
最后添加4层配置文件，不能放置http模块之内，因为http属于7层模型
stream { #4层反代
upstream kube-apiserver { # 后台负载地址
server 192.168.108.130:6443 max_fails=3 fail_timeout=30s;
server 192.168.108.131:6443 max_fails=3 fail_timeout=30s;
}
server {
listen 7443; #监听本地端口
proxy_connect_timeout 2s;
proxy_timeout 900s;
proxy_pass kube-apiserver;
}
}
[root@ceshi-128 conf]# ../sbin/nginx -t
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful
[root@ceshi-128 logs]# systemctl enable nginx
[root@ceshi-128 logs]# systemctl status nginx
部署keepalived实现api-server双活
- 安装节点（128 129）
(1) yum安装
[root@ceshi-128 ~]# yum install keepalived -y
[root@ceshi-128 ~]# cat /etc/keepalived/check_port.sh
#!/bin/bash
CHK_PORT=$1
if [ -n $CHK_PORT ];then
SUM=$(ss -tnl | grep $CHK_PORT |wc -l)
if [ $SUM -eq 0 ];then
systemctl stop keepalived
fi
else
echo "port $CHK_PORT is up"
fi
[root@ceshi-128 ~]# cat /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
router_id lb02 #标识信息
}
vrrp_script check {
script "/etc/keepalived/check_port.sh 7443"
interval 5
}
vrrp_instance VI_1 {
state MASTER #角色是master
interface ens33 #vip 绑定端口
virtual_router_id 40 #让master 和backup在同一个虚拟路由里，id 号必须相同；
priority 150 #优先级,谁的优先级高谁就是master ;
advert_int 3 #心跳间隔时间
nopreempt #非抢占式()
authentication {
auth_type PASS #认证
auth_pass 1111 #密码
}
virtual_ipaddress {
192.168.108.133 #虚拟ip
}
track_script {
check
}
}
[root@ceshi-128 ~]# systemctl enable keepalived
[root@ceshi-128 ~]# systemctl start keepalived
[root@ceshi-128 ~]# ip a | grep 192.168.108.*
inet 192.168.108.128/24 brd 192.168.108.255 scope global noprefixroute ens33
inet 192.168.108.133/32 scope global ens33
部署kube-controller-manager和kube-scheduler
- 安装节点同部署api-server节点(130 131)
(1) 配置kube-controller-manager启动脚本
[root@ceshi-130 bin]# vi /opt/kubernetes/server/bin/kube-controller-manager.sh
#!/bin/bash
./kube-controller-manager \
--cluster-cidr 172.7.0.0/16 \
--leader-elect true \
--log-dir /data/logs/kubernetes/kube-controller-manager \
--master http://127.0.0.1:8080 \
--service-account-private-key-file ./cert/ca-key.pem \
--service-cluster-ip-range 192.168.0.0/16 \
--root-ca-file ./cert/ca.pem \
--v 2
[root@ceshi-130 bin]# mkdir -p /data/logs/kubernetes/kube-controller-manager
(2) 创建supervisor配置
[root@ceshi-130 ~]# vi /etc/supervisord.d/kube-controller-manager.ini
# 不同节点替换kube-controller-manager-7-21
[program:kube-controller-manager-7-21]
command=/opt/kubernetes/server/bin/kube-controller-manager.sh ; the program (relative uses PATH, can take args)
numprocs=1 ; number of processes copies to start (def 1)
directory=/opt/kubernetes/server/bin ; directory to cwd to before exec (def no cwd)
autostart=true ; start at supervisord start (default: true)
autorestart=true ; retstart at unexpected quit (default: true)
startsecs=30 ; number of secs prog must stay running (def. 1)
startretries=3 ; max # of serial start failures (default 3)
exitcodes=0,2 ; 'expected' exit codes for process (default 0,2)
stopsignal=QUIT ; signal used to kill process (default TERM)
stopwaitsecs=10 ; max num secs to wait b4 SIGKILL (default 10)
user=root ; setuid to this UNIX account to run the program
redirect_stderr=true ; redirect proc stderr to stdout (default false)
stdout_logfile=/data/logs/kubernetes/kube-controller-manager/controller.stdout.log ; stderr log path, NONE for none; default AUTO
stdout_logfile_maxbytes=64MB ; max # logfile bytes b4 rotation (default 50MB)
stdout_logfile_backups=4 ; # of stdout logfile backups (default 10)
stdout_capture_maxbytes=1MB ; number of bytes in 'capturemode' (default 0)
stdout_events_enabled=false ; emit events on stdout writes (default false)
[root@ceshi-130 ~]# supervisorctl update
kube-controller-manager-7-21: added process group
(3) 配置kube-scheduler启动脚本
[root@ceshi-130 bin]# vi /opt/kubernetes/server/bin/kube-scheduler.sh
#!/bin/bash
./kube-scheduler \
--leader-elect \
--log-dir /data/logs/kubernetes/kube-scheduler \
--master http://127.0.0.1:8080 \ #本机通信找master不需要证书验证，交叉需要证书验证
--v 2
[root@ceshi-130 bin]# mkdir -p /data/logs/kubernetes/kube-scheduler
(4) 创建supervisor配置
[root@ceshi-130 ~]# vi /etc/supervisord.d/kube-scheduler.ini
# 不同节点替换kube-controller-manager-7-21
[program:kube-scheduler-7-21]
command=/opt/kubernetes/server/bin/kube-scheduler.sh ; the program (relative uses PATH, can take args)
numprocs=1 ; number of processes copies to start (def 1)
directory=/opt/kubernetes/server/bin ; directory to cwd to before exec (def no cwd)
autostart=true ; start at supervisord start (default: true)
autorestart=true ; retstart at unexpected quit (default: true)
startsecs=30 ; number of secs prog must stay running (def. 1)
startretries=3 ; max # of serial start failures (default 3)
exitcodes=0,2 ; 'expected' exit codes for process (default 0,2)
stopsignal=QUIT ; signal used to kill process (default TERM)
stopwaitsecs=10 ; max num secs to wait b4 SIGKILL (default 10)
user=root ; setuid to this UNIX account to run the program
redirect_stderr=true ; redirect proc stderr to stdout (default false)
stdout_logfile=/data/logs/kubernetes/kube-scheduler/scheduler.stdout.log ; stderr log path, NONE for none; default AUTO
stdout_logfile_maxbytes=64MB ; max # logfile bytes b4 rotation (default 50MB)
stdout_logfile_backups=4 ; # of stdout logfile backups (default 10)
stdout_capture_maxbytes=1MB ; number of bytes in 'capturemode' (default 0)
stdout_events_enabled=false ; emit events on stdout writes (default false)
[root@ceshi-130 ~]# supervisorctl update
kube-scheduler-7-21: added process group
[root@ceshi-130 ~]# supervisorctl status
etcd-server RUNNING pid 1640, uptime 0:02:55
kube-apiserver-7-21 RUNNING pid 1644, uptime 0:02:55
kube-controller-manager-7-21 RUNNING pid 1631, uptime 0:02:55
kube-scheduler-7-21 RUNNING pid 1641, uptime 0:02:55
[root@ceshi-130 ~]# ln -s /opt/kubernetes/server/bin/kubectl /usr/bin/kubectl
查看组件信息
[root@ceshi-130 ~]# kubectl get cs
NAME STATUS MESSAGE ERROR
scheduler Healthy ok
etcd-0 Healthy {"health": "true"}
etcd-1 Healthy {"health": "true"}
controller-manager Healthy ok
etcd-2 Healthy {"health": "true"}
部署kubelet运算节点服务
(1) 创建证书配置
- 创建节点132
[root@ceshi-132 certs]# cat kubelet-csr.json
{
"CN": "k8s-kubelet",
"hosts": [ #必须写规划在内的ip
"127.0.0.1",
"192.168.108.128",
"192.168.108.129",
"192.168.108.130",
"192.168.108.131",
"192.168.108.132",
"192.168.108.133",
"192.168.108.134",
"192.168.108.135",
"192.168.108.136"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "shanghai",
"L": "shanghai",
"O": "od",
"OU": "ops"
}
]
}
[root@ceshi-132 certs]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=server kubelet-csr.json | cfssljson -bare kubelet
(2) 拷贝证书
- 在api-server两节点拷贝证书（130 131）
[root@ceshi-130 cert]# pwd
/opt/kubernetes/server/bin/cert
[root@ceshi-130 cert]# scp [email protected]:/opt/certs/kubelet-key.pem .
[root@ceshi-130 cert]# scp [email protected]:/opt/certs/kubelet.pem .
(2) 创建配置
set-cluster集群参数
[root@ceshi-130 conf]# kubectl config set-cluster myk8s \
--certificate-authority=/opt/kubernetes/server/bin/cert/ca.pem \
--embed-certs=true \
--server=https://192.168.108.133:7443 \ #设置api-server中的VIP
--kubeconfig=kubelet.kubeconfig
set-credentials客户端认证参数
[root@ceshi-130 conf]# kubectl config set-credentials k8s-node \
--client-certificate=/opt/kubernetes/server/bin/cert/client.pem \
--client-key=/opt/kubernetes/server/bin/cert/client-key.pem \
--embed-certs=true=true \
--kubeconfig=kubelet.kubeconfig
set-context上下文参数
[root@ceshi-130 conf] # kubectl config set-context myk8s-context \
--cluster=myk8s \ # 集群名称
--user=k8s-node \ # 指定用户
--kubeconfig=kubelet.kubeconfig
use-context默认上下文
[root@ceshi-130 conf] # kubectl config use-context myk8s-context \
--kubeconfig=kubelet.kubeconfig
(3) 绑定授权运算角色权限
[root@ceshi-130 conf]# cat k8s-node.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: k8s-node #名称
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole #集群角色
name: system:node
subjects:
- apiGroup: rbac.authorization.k8s.io
kind: User # k8s-node用户授权运算节点权限
name: k8s-node
[root@ceshi-130 conf]# kubectl create -f k8s-node.yaml
clusterrolebinding.rbac.authorization.k8s.io/k8s-node created
[root@ceshi-130 conf]# kubectl get clusterrolebinding k8s-node
NAME AGE
k8s-node 91s
pause基础镜像(kubelet依赖)
- 节点（132）
[root@ceshi-132 ~]# docker pull kubernetes/pause
[root@ceshi-132 ~]# docker tag f9d5de079539 harbor.od.com/public/pause:latest
[root@ceshi-132 ~]# docker push harbor.od.com/public/pause:latest
(4) 启动kubelet服务
[root@ceshi-130 bin]# pwd
/opt/kubernetes/server/bin
[root@ceshi-130 bin]# cat kubelet.sh
#!/bin/bash
./kubelet \
--anonymous-auth=false \ #不允许匿名登陆
--cgroup-driver systemd \
--cluster-dns 192.168.0.2 \
--cluster-domain cluster.local \
--runtime-cgroups=/systemd/system.slice \
--kubelet-cgroups=/systemd/system.slice \
--fail-swap-on="false" \ #不关闭swap交换分区
--client-ca-file ./cert/ca.pem \ #根证书
--tls-cert-file ./cert/kubelet.pem \ #kubelet证书
--tls-private-key-file ./cert/kubelet-key.pem \ #私钥
--address 192.168.108.130 \ #主机
--hostname-override ceshi-130.host.com \ #主机名
--image-gc-high-threshold 20 \
--image-gc-low-threshold 10 \
--kubeconfig ./conf/kubelet.kubeconfig \ #指定配置文件
--log-dir /data/logs/kubernetes/kube-kubelet \ #日志文件路径
--pod-infra-container-image harbor.od.com/public/pause:latest \ #私有仓库镜像地址
--root-dir /data/kubelet
[root@ceshi-130 bin]# mkdir -p /data/logs/kubernetes/kube-kubelet /data/kubelet
[root@ceshi-130 bin]# chmod +x kubelet.sh
(5) 创建supervisor配置
[root@ceshi-130 bin]# vi /etc/supervisord.d/kubelet.ini
修改不同项[program:kube-kubelet-7-22]
[program:kube-kubelet-7-21]
command=/opt/kubernetes/server/bin/kubelet.sh
numprocs=1
directory=/opt/kubernetes/server/bin
autostart=true
autorestart=true
startsecs=30
startretries=3
exitcodes=0,2
stopsignal=QUIT
stopwaitsecs=10
user=root
redirect_stderr=true
stdout_logfile=/data/logs/kubernetes/kube-kubelet/kubelet.stdout.log
stdout_logfile_maxbytes=64MB
stdout_logfile_backups=4
stdout_capture_maxbytes=1MB
stdout_events_enabled=false
[root@ceshi-130 bin]# supervisorctl update
kube-kubelet-7-21: added process group
[root@ceshi-130 bin]# supervisorctl status
etcd-server RUNNING pid 1140, uptime 0:14:21
kube-apiserver-7-21 RUNNING pid 1142, uptime 0:14:21
kube-controller-manager-7-21 RUNNING pid 1136, uptime 0:14:21
kube-kubelet-7-21 RUNNING pid 2795, uptime 0:07:02
kube-scheduler-7-21 RUNNING pid 1141, uptime 0:14:21
[root@ceshi-130 bin]# kubectl get node
NAME STATUS ROLES AGE VERSION
ceshi-130.host.com Ready <none> 8m31s v1.15.10
ceshi-131.host.com Ready <none> 2m14s v1.15.10
[root@ceshi-130 bin]# kubectl label node ceshi-130.host.com node-role.kubernetes.io/master=
[root@ceshi-130 bin]# kubectl label node ceshi-130.host.com node-role.kubernetes.io/node=
[root@ceshi-130 bin]# kubectl get nodes
NAME STATUS ROLES AGE VERSION
ceshi-130.host.com Ready master,node 12m v1.15.10
ceshi-131.host.com Ready <none> 6m42s v1.15.10
部署kube-proxy服务
- 部署节点(130 131)
(1) 签发证书
- 节点(132)
[root@ceshi-132 certs]# vi kube-proxy-csr.json
{
"CN": "system:kube-proxy",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "Beijing",
"L": "Beijing",
"O": "k8s",
"OU": "system"
}
]
}
[root@ceshi-132 certs]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=client kube-proxy-csr.json | cfssljson -bare kube-proxy-client
[root@ceshi-132 certs]# ll kube-*
-rw-r--r-- 1 root root 1009 Jul 20 15:58 kube-proxy-client.csr
-rw------- 1 root root 1679 Jul 20 15:58 kube-proxy-client-key.pem
-rw-r--r-- 1 root root 1379 Jul 20 15:58 kube-proxy-client.pem
-rw-r--r-- 1 root root 215 Jul 20 15:55 kube-proxy-csr.json
(2) 拷贝证书
- 节点(130 131)
[root@ceshi-130 cert]# scp [email protected]:/opt/certs/kube-proxy-client-key.pem .
[root@ceshi-130 cert]# scp [email protected]:/opt/certs/kube-proxy-client.pem .
(3) 创建配置
set-cluster集群参数
[root@ceshi-130 conf]# kubectl config set-cluster myk8s \
--certificate-authority=/opt/kubernetes/server/bin/cert/ca.pem \
--embed-certs=true \
--server=https://192.168.108.133:7443 \ #VIP
--kubeconfig=kube-proxy.kubeconfig
set-credentials客户端认证参数
[root@ceshi-130 conf]# kubectl config set-credentials k8s-proxy \
--client-certificate=/opt/kubernetes/server/bin/cert/kube-proxy-client.pem \
--client-key=/opt/kubernetes/server/bin/cert/kube-proxy-client-key.pem \
--embed-certs=true \
--kubeconfig=kube-proxy.kubeconfig
set-context上下文参数
[root@ceshi-130 conf]# kubectl config set-context myk8s-context \
--cluster=myk8s \
--user=kube-proxy \
--kubeconfig=kube-proxy.kubeconfig
use-context默认上下文
[root@ceshi-130 conf]# kubectl config use-context myk8s-context --kubeconfig=kube-proxy.kubeconfig
(4)加载ipvs模块
[root@ceshi-130 ~]# vi ipvs.sh
#!/bin/bash
ipvs_mods_dir="/usr/lib/modules/$(uname -r)/kernel/net/netfilter/ipvs"
for i in $(ls $ipvs_mods_dir|grep -o "^[^.]*")
do
/sbin/modinfo -F filename $i &>/dev/null
if [ $? -eq 0 ];then
/sbin/modprobe $i
fi
done
[root@ceshi-130 ~]# chmod +x ipvs.sh
[root@ceshi-130 ~]# ./ipvs.sh
[root@ceshi-130 ~]# lsmod | grep ip_vs
ip_vs_wrr 加权轮循调度
ip_vs_wlc 加权最小连接调度
ip_vs_sh 源地址散列调度
ip_vs_dh 目标地址散列调度
ip_vs_sed 最短预期延时调度
ip_vs_nq 不排队调度
ip_vs_rr 轮循调度
ip_vs_lc 最小连接调度
(5) 创建启动脚本
[root@ceshi-130 bin]# vi kube-proxy.sh
#!/bin/bash
./kube-proxy \
--cluster-cidr 172.17.0.0/16 \
--hostname-override 192.168.108.130 \
--proxy-mode=ipvs \
--ipvs-scheduler=nq \
--kubeconfig ./conf/kube-proxy.kubeconfig
[root@ceshi-130 bin]# chmod +x kube-proxy.sh
(6) 创建supervisor配置
[root@ceshi-130 bin]# vi /etc/supervisord.d/kube-proxy.ini
[program:kube-proxy-7-21]
command=/opt/kubernetes/server/bin/kube-proxy.sh
numprocs=1
directory=/opt/kubernetes/server/bin
autostart=true
autorestart=true
startsecs=30
startretries=3
exitcodes=0,2
stopsignal=QUIT
stopwaitsecs=10
user=root
redirect_stderr=true
stdout_logfile=/data/logs/kubernetes/kube-proxy/kube-proxy.stdout.log
stdout_logfile_maxbytes=64MB
stdout_logfile_backups=4
stdout_capture_maxbytes=1MB
stdout_events_enabled=false
[root@ceshi-130 bin]# mkdir -p /data/logs/kubernetes/kube-proxy/
[root@ceshi-130 bin]# supervisorctl update
[root@ceshi-130 bin]# supervisorctl status
etcd-server RUNNING pid 1140, uptime 1:55:18
kube-apiserver-7-21 RUNNING pid 1142, uptime 1:55:18
kube-controller-manager-7-21 RUNNING pid 1136, uptime 1:55:18
kube-kubelet-7-21 RUNNING pid 2795, uptime 1:47:59
kube-proxy-7-21 RUNNING pid 21521, uptime 0:14:38
kube-scheduler-7-21 RUNNING pid 1141, uptime 1:55:18
启动kube-proxy的时候报错：
Failed to list *v1.Service: services is forbidden: User "system:anonymous" cannot list resource "services" in API group "" at the cluster scope
方法1：给匿名用户授予集群管理权限
kubectl create clusterrolebinding anonymous-cluster-myk8s --clusterrole=cluster-admin --user=system:anonymous
然后重启
[root@ceshi-130 bin]# yum install ipvsadm -y
[root@ceshi-130 bin]# ipvsadm -Ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 192.168.0.1:443 nq
-> 192.168.108.130:6443 Masq 1 0 0
-> 192.168.108.131:6443 Masq 1 0 0
(7) 验证集群可用性
[root@ceshi-130 ~]# vi nginx-ceshi.yaml
apiVersion: extensions/v1beta1
kind: DaemonSet
metadata:
name: nginx-ds
spec:
template:
metadata:
labels:
app: nginx-ds
spec:
containers:
- name: my-nginx
image: harbor.od.com/public/nginx:v1.7.9
ports:
- containerPort: 33333
[root@ceshi-130 ~]# kubectl create -f nginx-ceshi.yaml
daemonset.extensions/nginx-ds created
[root@ceshi-130 ~]# kubectl get pods
NAME READY STATUS RESTARTS AGE
nginx-ds-25fff 1/1 Running 0 2m7s
nginx-ds-fcj25 1/1 Running 0 2m7s
[root@ceshi-130 ~]# kubectl get pods -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
nginx-ceshi-g6f7f 1/1 Running 1 14h 172.7.200.3 ceshi-131.host.com <none> <none>
nginx-ceshi-pdp5q 1/1 Running 1 14h 172.7.200.2 ceshi-130.host.com <none> <none>
nginx-ds-25fff 1/1 Running 1 15h 172.7.200.1 ceshi-131.host.com <none> <none>
nginx-ds-fcj25 1/1 Running 1 15h 172.7.200.3 ceshi-130.host.com <none> <none>
[root@ceshi-130 ~]# curl 172.7.200.3
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
body {
width: 35em;
margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif;
}
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>