- 常见的K8S安装部署方式:
- 二进制安装
- !/bin/sh
- listen-peer-urls etcd节点之间通信端口
- listen-client-urls 客户端与etcd通信端口
- quota-backend-bytes 配额大小
- 需要修改的参数：name,listen-peer-urls,listen-client-urls,initial-advertise-peer-urls
- hosts中将所有可能作为apiserver的ip添加进去，VIP 10.4.7.10 也要加入
- Don’t generate audit events for all requests in RequestReceived stage.
- Log pod changes at RequestResponse level
- Resource “pods” doesn’t match requests to any subresource of pods,
- which is consistent with the RBAC policy.
- Log “pods/log”, “pods/status” at Metadata level
- Don’t log requests to a configmap called “controller-leader”
- Don’t log watch requests by the “system:kube-proxy” on endpoints or services
- Don’t log authenticated requests to certain non-resource URL paths.
- Log the request body of configmap changes in kube-system.
- This rule only applies to resources in the “kube-system” namespace.
- The empty string “” can be used to select non-namespaced resources.
- Log configmap and secret changes in all other namespaces at the Metadata level.
- Log all other resources in core and extensions at the Request level.
- A catch-all rule to log all other requests at the Metadata level.
- Long-running requests like watches that fall under this rule will not
- generate an audit event in RequestReceived.
- 配置apiserver L4代理
- controller-manager 安装
- kube-scheduler安装
- !/bin/sh
- !/bin/sh
- !/bin/sh
- 报错排查
常见的K8S安装部署方式:
- Minikube 单节点微型K8S (仅供学习、预览使用)
- 二进制安装部署(生产首选,新手推荐)
- 使用kubeadmin进行部署, K8S的部署工具,跑在K8S里(相对简单,熟手推荐)
二进制安装
这里的部署文档基于阿里云服务器 文中有一些附件形式的软件包可以直接下载 由于上附件需要更多的空间 如果有需要注册语雀的朋友 可以点击我的邀请链接注册（会送我一点空间）
安装前准备
相关目录 /opt 二进制服务安装路径 /opt/src 二进制包放置路径
环境准备
所有机器都需要执行
~]# uname -a (内核版本最低需要3.10)Linux alice40 3.10.0-957.21.3.el7.x86_64 #1 SMP Tue Jun 18 16:35:19 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux~]# systemctl stop firewalld~]# systemctl disable firewalld~]# setenforce 0~]# sed -ir '/^SELINUX=/s/=.+/=disabled/' /etc/selinux/config~]# wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo~]# wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo~]# yum install -y wget net-tools telnet tree nmap sysstat lrzsz dos2unix bind-utils vim less~]# 都需要配置定时任务~]# crontab -l#ntp00 * * * * /usr/sbin/ntpdate ntp6.aliyun.com
bind安装
hdss7-11 安装bind
~]# yum install -y bind
主配置文件
注意语法（分号空格）这里的IP是内网IP
~]# vim /etc/named.conf # 确保以下配置正确
listen-on port 53 { 10.4.7.11; }; # 监听端口53 下面一行本来有ipv6地址 需要删除
directory "/var/named";
allow-query { any; }; #允许内机器都可以查
forwarders { 10.4.7.254; }; # 上级dns 虚拟机这里填的是网关地址，阿里云机器可以填223.5.5.5
recursion yes; # 采用递归方法查询IP
dnssec-enable no;
dnssec-validation no;
~]# named-checkconf # 检查配置 没有信息即为正确
~]#
在 hdss7-11.host.com 配置区域文件
# 增加两个zone配置，od.com为业务域，host.com.zone为主机域
~]# vim /etc/named.rfc1912.zones
zone "host.com" IN {
type master;
file "host.com.zone";
allow-update { 10.4.7.11; };
};
zone "od.com" IN {
type master;
file "od.com.zone";
allow-update { 10.4.7.11; };
};
在 hdss7-11.host.com 配置主机域文件
# line6中时间需要修改 格式为xxxx xx xx01（年月日01）每次修改配置文件都需要前滚一个序列号
~]# vim /var/named/host.com.zone
$ORIGIN host.com.
$TTL 600 ; 10 minutes # 过期时间十分钟 这里的分号是注释
@ IN SOA dns.host.com. dnsadmin.host.com. (
2020010501 ; serial
10800 ; refresh (3 hours) # soa参数
900 ; retry (15 minutes)
604800 ; expire (1 week)
86400 ; minimum (1 day)
)
NS dns.host.com.
$TTL 60 ; 1 minute
dns A 10.4.7.11
HDSS7-11 A 10.4.7.11
HDSS7-12 A 10.4.7.12
HDSS7-21 A 10.4.7.21
HDSS7-22 A 10.4.7.22
HDSS7-200 A 10.4.7.200
在 hdss7-11.host.com 配置业务域文件
~]# vim /var/named/od.com.zone
$ORIGIN od.com.
$TTL 600 ; 10 minutes
@ IN SOA dns.od.com. dnsadmin.od.com. (
2020010501 ; serial
10800 ; refresh (3 hours)
900 ; retry (15 minutes)
604800 ; expire (1 week)
86400 ; minimum (1 day)
)
NS dns.od.com.
$TTL 60 ; 1 minute
dns A 10.4.7.11
在 hdss7-11.host.com 启动bind服务，并测试
[root@hdss7-11 ~]# named-checkconf # 检查配置文件
[root@hdss7-11 ~]# systemctl start named ; systemctl enable named
[root@hdss7-11 ~]# dig -t A hdss7-11.host.com @10.4.7.11 +shor #检查是否可以解析到
10.4.7.11
修改主机DNS
- 修改所有主机的dns服务器地址
[root@alice001 resume]# cat /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 BOOTPROTO=dhcp ONBOOT=yes DNS1=172.23.187.175 [root@alice001 resume]# [root@hdss7-11 ~]# systemctl restart network [root@hdss7-11 ~]# cat /etc/resolv.conf # Generated by NetworkManager search host.com #添加后解析主机A记录 可以不加域名 例如 dig -t A hdss7-11 @10.4.7.11 +short nameserver 172.23.187.175
根证书准备
- 在 hdss7-200 下载工具
[root@hdss7-200 ~]# wget https://pkg.cfssl.org/R1.2/cfssl_linux-amd64 -O /usr/local/bin/cfssl [root@hdss7-200 ~]# wget https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64 -O /usr/local/bin/cfssl-json [root@hdss7-200 ~]# wget https://pkg.cfssl.org/R1.2/cfssl-certinfo_linux-amd64 -O /usr/local/bin/cfssl-certinfo [root@hdss7-200 ~]# chmod u+x /usr/local/bin/cfssl*
在 hdss7-200 签发根证书
~]# mkdir /opt/certs/ ; cd /opt/certs/
certs]# vim /opt/certs/ca-csr.json
{
"CN": "OldboyEdu",
"hosts": [
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "beijing",
"L": "beijing",
"O": "od",
"OU": "ops"
}
],
"ca": {
"expiry": "175200h" # 过期时间（20年）
}
}
certs]# cfssl gencert -initca ca-csr.json | cfssl-json -bare ca
2020/01/05 10:42:07 [INFO] generating a new CA key and certificate from CSR
2020/01/05 10:42:07 [INFO] generate received request
2020/01/05 10:42:07 [INFO] received CSR
2020/01/05 10:42:07 [INFO] generating key: rsa-2048
2020/01/05 10:42:08 [INFO] encoded CSR
2020/01/05 10:42:08 [INFO] signed certificate with serial number 451005524427475354617025362003367427117323539780
certs]# ls -l ca*
-rw-r--r-- 1 root root 993 Jan 5 10:42 ca.csr
-rw-r--r-- 1 root root 328 Jan 5 10:39 ca-csr.json
-rw------- 1 root root 1675 Jan 5 10:42 ca-key.pem
-rw-r--r-- 1 root root 1346 Jan 5 10:42 ca.pem
CN: Common Name ,浏览器使用该字段验证网站是否合法, 一般写的是域名。非常重要。浏览器使 用该字段验证网站是否合法C: Country,国家ST:State,州，省L: Locality ,地区,城市O: Organization Name ,组织名称,公司名称OU: Organization Unit Name ,组织单位名称,公司部门
docker环境准备
需要安装docker的机器：hdss7-21 hdss7-22 hdss7-200，以hdss7-21为例
bip需要改为 172.xx.xx.1/24 这里的xx.xx是主机内网IP的后两段
~]# wget -O /etc/yum.repos.d/docker-ce.repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
~]# yum install -y docker-ce
~]# mkdir /etc/docker/
~]# vim /etc/docker/daemon.json
{
"graph": "/data/docker",
"storage-driver": "overlay2",
"insecure-registries": ["registry.access.redhat.com","quay.io","harbor.od.com"],
"registry-mirrors": ["https://registry.docker-cn.com"],
"bip": "172.7.21.1/24",
"exec-opts": ["native.cgroupdriver=systemd"],
"live-restore": true
}
~]# mkdir /data/docker
~]# systemctl start docker ; systemctl enable docker
~]# docker version # 检查版本
配置详情解释请参考： 戳我
如果需要安装指定版本的docker
查看软件版本yum list docker-ce.x86_64 --showduplicates | sort -r
安装对应版本软件yum install -y docker-ce-18.09.9 docker-ce-cli-18.09.9 containerd.io
一条命令安装docker
curl -fsSL https://get.docker.com | bash -s docker --mirror Aliyun
harbor安装
官方地址：https://goharbor.io/
下载地址：https://github.com/goharbor/harbor/releases
注意 不要选择1.7.5以下版本 有漏洞
下载的时候下载harbor-offline-installer-vx.x.x.tgz版本（离线安装版本）
harbor-offline-installer-v1.8.0.tgz
harbor-offline-installer-v1.8.5.tgz
安装harbor
~]# cd /opt/src
src]# wget https://github.com/goharbor/harbor/releases/download/v1.9.4/harbor-offline-installer-v1.9.4.tgz
src]# mv harbor /opt/harbor-v1.9.4
src]# ln -s /opt/harbor-v1.9.4 /opt/harbor
src]# ll /opt/
total 0
lrwxrwxrwx 1 root root 26 Jan 5 11:13 harbor -> /opt/harbor-v1.9.4
# 实验环境仅修改以下配置项，生产环境还得修改密码
src]# vim /opt/harbor/harbor.yml
hostname: harbor.od.com
http:
port: 180
data_volume: /data/harbor
location: /data/harbor/logs
src]# yum install -y docker-compose
src]# cd /opt/harbor/
harbor]# ./install.sh
......
✔ ----Harbor has been installed and started successfully.----
harbor]# docker-compose ps
Name Command State Ports
--------------------------------------------------------------------------------------
harbor-core /harbor/harbor_core Up
harbor-db /docker-entrypoint.sh Up 5432/tcp
harbor-jobservice /harbor/harbor_jobservice ... Up
harbor-log /bin/sh -c /usr/local/bin/ ... Up 127.0.0.1:1514->10514/tcp
harbor-portal nginx -g daemon off; Up 8080/tcp
nginx nginx -g daemon off; Up 0.0.0.0:180->8080/tcp
redis redis-server /etc/redis.conf Up 6379/tcp
registry /entrypoint.sh /etc/regist ... Up 5000/tcp
registryctl /harbor/start.sh Up
设置harbor开机启动
[root@hdss7-200 harbor]# vim /etc/rc.d/rc.local # 增加以下内容 # start harbor cd /opt/harbor /usr/docker-compose stop /usr/docker-compose starthdss7-200 安装nginx
安装Nginx反向代理harbor
这里如果用的是阿里云 记得在安全组放行80端口
# 当前机器中Nginx功能较少，使用yum安装即可。如有多个harbor考虑源码编译且配置健康检查
# nginx配置此处忽略，仅仅使用最简单的配置。
harbor]# vim /etc/nginx/conf.d/harbor.conf
harbor]# cat /etc/nginx/conf.d/harbor.conf
server {
listen 80;
server_name harbor.od.com;
# 避免出现上传失败的情况
client_max_body_size 1000m;
location / {
proxy_pass http://127.0.0.1:180;
}
} harbor]# systemctl start nginx ; systemctl enable nginx
hdss7-11 配置DNS解析
~]# vim /var/named/od.com.zone # 序列号需要滚动一个 $ORIGIN od.com. $TTL 600 ; 10 minutes @ IN SOA dns.od.com. dnsadmin.od.com. ( 2020010502 ; serial 10800 ; refresh (3 hours) 900 ; retry (15 minutes) 604800 ; expire (1 week) 86400 ; minimum (1 day) ) NS dns.od.com. $TTL 60 ; 1 minute dns A 10.4.7.11 harbor A 10.4.7.200 ~]# systemctl restart named.service # reload 无法使得配置生效 ~]# host harbor.od.com harbor.od.com has address 10.4.7.200
新建项目: public
测试harbor
~]# docker pull nginx:1.7.9 ~]# docker tag nginx:1.7.9 harbor.od.com/public/nginx:v1.7.9 ~]# docker login -u admin harbor.od.com ~]# docker push harbor.od.com/public/nginx:v1.7.9 ~]# docker logout主控节点安装
etcd安装
etcd 的leader选举机制，要求至少为3台或以上的奇数台。本次安装涉及：hdss7-12，hdss7-21，hdss7-22
签发etcd证书
证书签发服务器 hdss7-200:
创建ca的json配置: /opt/certs/ca-config.json
- server 表示服务端连接客户端时携带的证书，用于客户端验证服务端身份
- client 表示客户端连接服务端时携带的证书，用于服务端验证客户端身份
- peer 表示相互之间连接时使用的证书，如etcd节点之间验证
"expiry": "175200h" 证书有效期 十年 如果这里是一年的话 到期后集群会立宕掉
{
"signing": {
"default": {
"expiry": "175200h"
},
"profiles": {
"server": {
"expiry": "175200h",
"usages": [
"signing",
"key encipherment",
"server auth"
]
},
"client": {
"expiry": "175200h",
"usages": [
"signing",
"key encipherment",
"client auth"
]
},
"peer": {
"expiry": "175200h",
"usages": [
"signing",
"key encipherment",
"server auth",
"client auth"
]
}
}
}
}
- 创建etcd证书配置：/opt/certs/etcd-peer-csr.json
重点在hosts上，将所有可能的etcd服务器添加到host列表，不能使用网段，新增etcd服务器需要重新签发证书
{
"CN": "k8s-etcd",
"hosts": [
"10.4.7.11",
"10.4.7.12",
"10.4.7.21",
"10.4.7.22"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "beijing",
"L": "beijing",
"O": "od",
"OU": "ops"
}
]
}
签发证书
[root@hdss7-200 ~]# cd /opt/certs/ [root@hdss7-200 certs]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=peer etcd-peer-csr.json |cfssl-json -bare etcd-peer [root@hdss7-200 certs]# ll etcd-peer* -rw-r--r-- 1 root root 1062 Jan 5 17:01 etcd-peer.csr -rw-r--r-- 1 root root 363 Jan 5 16:59 etcd-peer-csr.json -rw------- 1 root root 1675 Jan 5 17:01 etcd-peer-key.pem -rw-r--r-- 1 root root 1428 Jan 5 17:01 etcd-peer.pem安装etcd
etcd地址：https://github.com/etcd-io/etcd/
实验使用版本: etcd-v3.1.20-linux-amd64.tar.gz
etcd-v3.1.20-linux-amd64.tar.gz
本次安装涉及：hdss7-12，hdss7-21，hdss7-22下载etcd
[root@hdss7-12 ~]# useradd -s /sbin/nologin -M etcd [root@hdss7-12 ~]# cd /opt/src/ [root@hdss7-12 src]# wget https://github.com/etcd-io/etcd/releases/download/v3.1.20/etcd-v3.1.20-linux-amd64.tar.gz [root@hdss7-12 src]# tar -xf etcd-v3.1.20-linux-amd64.tar.gz [root@hdss7-12 src]# mv etcd-v3.1.20-linux-amd64 /opt/etcd-v3.1.20 [root@hdss7-12 src]# ln -s /opt/etcd-v3.1.20 /opt/etcd [root@hdss7-12 src]# ll /opt/etcd lrwxrwxrwx 1 root root 25 Jan 5 17:56 /opt/etcd -> /opt/etcd-v3.1.20 [root@hdss7-12 src]# mkdir -p /opt/etcd/certs /data/etcd /data/logs/etcd-server下发证书到各个etcd上
~]# cd /opt/certs/ certs]# for i in 12 21 22;do scp ca.pem etcd-peer.pem etcd-peer-key.pem hdss7-${i}:/opt/etcd/certs/ ;done
[root@hdss7-12 src]# md5sum /opt/etcd/certs/*
8778d0c3411891af61a287e49a70c89a /opt/etcd/certs/ca.pem
7918783c2f6bf69e96edf03e67d04983 /opt/etcd/certs/etcd-peer-key.pem
d4d849751a834c7727d42324fdedf92d /opt/etcd/certs/etcd-peer.pem
- 创建启动脚本(部分参数每台机器不同)
```bash
~]# vim /opt/etcd/etcd-server-startup.sh
!/bin/sh
listen-peer-urls etcd节点之间通信端口
listen-client-urls 客户端与etcd通信端口
quota-backend-bytes 配额大小
需要修改的参数：name,listen-peer-urls,listen-client-urls,initial-advertise-peer-urls
WORK_DIR=$(dirname $(readlink -f $0)) [ $? -eq 0 ] && cd $WORK_DIR || exit
/opt/etcd/etcd —name etcd-server-7-12 \ —data-dir /data/etcd/etcd-server \ —listen-peer-urls https://10.4.7.12:2380 \ —listen-client-urls https://10.4.7.12:2379,http://127.0.0.1:2379 \ —quota-backend-bytes 8000000000 \ —initial-advertise-peer-urls https://10.4.7.12:2380 \ —advertise-client-urls https://10.4.7.12:2379,http://127.0.0.1:2379 \ —initial-cluster etcd-server-7-12=https://10.4.7.12:2380,etcd-server-7-21=https://10.4.7.21:2380,etcd-server-7-22=https://10.4.7.22:2380 \ —ca-file ./certs/ca.pem \ —cert-file ./certs/etcd-peer.pem \ —key-file ./certs/etcd-peer-key.pem \ —client-cert-auth \ —trusted-ca-file ./certs/ca.pem \ —peer-ca-file ./certs/ca.pem \ —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
~]# chmod u+x /opt/etcd/etcd-server-startup.sh ~]# chown -R etcd.etcd /opt/etcd/ /data/etcd /data/logs/etcd-server
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#### 启动etcd
因为这些进程都是要启动为后台进程，要么手动启动，要么采用后台进程管理工具，实验中使用后台管理工具
~]# yum install -y supervisor ~]# systemctl start supervisord ; systemctl enable supervisord ~]# vim /etc/supervisord.d/etcd-server.ini [program:etcd-server-7-12] command=/opt/etcd/etcd-server-startup.sh ; the program (relative uses PATH, can take args) numprocs=1 ; number of processes copies to start (def 1) directory=/opt/etcd ; 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=etcd ; setuid to this UNIX account to run the program redirect_stderr=true ; redirect proc stderr to stdout (default false) stdout_logfile=/data/logs/etcd-server/etcd.stdout.log ; stdout log path, NONE for none; default AUTO stdout_logfile_maxbytes=64MB ; max # logfile bytes b4 rotation (default 50MB) stdout_logfile_backups=5 ; # 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) ~]# supervisorctl update etcd-server-7-12: added process group
- etcd 进程状态查看
~]# supervisorctl status # supervisorctl 状态 etcd-server-7-12 RUNNING pid 22375, uptime 0:00:39
~]# netstat -lntp|grep etcd
tcp 0 0 10.4.7.12:2379 0.0.0.0: LISTEN 22379/etcd
tcp 0 0 127.0.0.1:2379 0.0.0.0: LISTEN 22379/etcd
tcp 0 0 10.4.7.12:2380 0.0.0.0:* LISTEN 22379/etcd
~]# /opt/etcd/etcdctl member list # 随着etcd重启，leader会变化 988139385f78284: name=etcd-server-7-22 peerURLs=https://10.4.7.22:2380 clientURLs=http://127.0.0.1:2379,https://10.4.7.22:2379 isLeader=false 5a0ef2a004fc4349: name=etcd-server-7-21 peerURLs=https://10.4.7.21:2380 clientURLs=http://127.0.0.1:2379,https://10.4.7.21:2379 isLeader=true f4a0cb0a765574a8: name=etcd-server-7-12 peerURLs=https://10.4.7.12:2380 clientURLs=http://127.0.0.1:2379,https://10.4.7.12:2379 isLeader=false
~]# /opt/etcd/etcdctl cluster-health member 988139385f78284 is healthy: got healthy result from http://127.0.0.1:2379 member 5a0ef2a004fc4349 is healthy: got healthy result from http://127.0.0.1:2379 member f4a0cb0a765574a8 is healthy: got healthy result from http://127.0.0.1:2379 cluster is healthy
- etcd 启停方式
~]# supervisorctl start etcd-server-7-12 ~]# supervisorctl stop etcd-server-7-12 ~]# supervisorctl restart etcd-server-7-12 ~]# supervisorctl status etcd-server-7-12
<a name="zic0e"></a>
### apiserver 安装
<a name="G9D3U"></a>
#### 下载kubernetes服务端
aipserver 涉及的服务器：hdss7-21，hdss7-22<br />下载 kubernetes 二进制版本包需要科学上网工具
- 进入kubernetes的github页面: [https://github.com/kubernetes/kubernetes](https://github.com/kubernetes/kubernetes)
- 进入tags页签: [https://github.com/kubernetes/kubernetes/tags](https://github.com/kubernetes/kubernetes/tags)
- 选择要下载的版本: [https://github.com/kubernetes/kubernetes/releases/tag/v1.15.2](https://github.com/kubernetes/kubernetes/releases/tag/v1.15.2)
- 点击 CHANGELOG-${version}.md 进入说明页面: [https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.15.md#downloads-for-v1152](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.15.md#downloads-for-v1152)
- 下载Server Binaries: [https://dl.k8s.io/v1.15.2/kubernetes-server-linux-amd64.tar.gz](https://dl.k8s.io/v1.15.2/kubernetes-server-linux-amd64.tar.gz)
[kubernetes-server-linux-amd64.tar.gz](https://www.yuque.com/attachments/yuque/0/2021/gz/2392831/1612088268719-cf070c15-2a63-49e8-88af-2e35749fef93.gz?_lake_card=%7B%22uid%22%3A%221612088017224-0%22%2C%22src%22%3A%22https%3A%2F%2Fwww.yuque.com%2Fattachments%2Fyuque%2F0%2F2021%2Fgz%2F2392831%2F1612088268719-cf070c15-2a63-49e8-88af-2e35749fef93.gz%22%2C%22name%22%3A%22kubernetes-server-linux-amd64.tar.gz%22%2C%22size%22%3A443770238%2C%22type%22%3A%22application%2Fgzip%22%2C%22ext%22%3A%22gzip%22%2C%22progress%22%3A%7B%22percent%22%3A99%7D%2C%22status%22%3A%22done%22%2C%22percent%22%3A0%2C%22id%22%3A%22KJFz2%22%2C%22card%22%3A%22file%22%7D)
~]# cd /opt/src src]# wget https://dl.k8s.io/v1.15.2/kubernetes-server-linux-amd64.tar.gz
src]# tar -xf kubernetes-server-linux-amd64.tar.gz src]# mv kubernetes /opt/kubernetes-v1.15.2 src]# ln -s /opt/kubernetes-v1.15.2 /opt/kubernetes src]# ll /opt/kubernetes lrwxrwxrwx 1 root root 31 Jan 6 12:59 /opt/kubernetes -> /opt/kubernetes-v1.15.2
src]# cd /opt/kubernetes kubernetes]# rm -f kubernetes-src.tar.gz 源代码文件 kubernetes]# cd server/bin/ bin]# rm -f .tar _tag # .tar _tag 镜像文件 bin]# ll total 884636 -rwxr-xr-x 1 root root 43534816 Aug 5 18:01 apiextensions-apiserver -rwxr-xr-x 1 root root 100548640 Aug 5 18:01 cloud-controller-manager -rwxr-xr-x 1 root root 200648416 Aug 5 18:01 hyperkube -rwxr-xr-x 1 root root 40182208 Aug 5 18:01 kubeadm -rwxr-xr-x 1 root root 164501920 Aug 5 18:01 kube-apiserver -rwxr-xr-x 1 root root 116397088 Aug 5 18:01 kube-controller-manager -rwxr-xr-x 1 root root 42985504 Aug 5 18:01 kubectl -rwxr-xr-x 1 root root 119616640 Aug 5 18:01 kubelet -rwxr-xr-x 1 root root 36987488 Aug 5 18:01 kube-proxy -rwxr-xr-x 1 root root 38786144 Aug 5 18:01 kube-scheduler -rwxr-xr-x 1 root root 1648224 Aug 5 18:01 mounter
<a name="ChFxb"></a>
#### 签发证书
签发证书 涉及的服务器：hdss7-200
- 签发client证书（apiserver和etcd通信证书）
[root@hdss7-200 ~]# cd /opt/certs/ [root@hdss7-200 certs]# vim /opt/certs/client-csr.json { “CN”: “k8s-node”, “hosts”: [ ], “key”: { “algo”: “rsa”, “size”: 2048 }, “names”: [ { “C”: “CN”, “ST”: “beijing”, “L”: “beijing”, “O”: “od”, “OU”: “ops” } ] } certs]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=client client-csr.json |cfssl-json -bare client 2020/01/06 13:42:47 [INFO] generate received request 2020/01/06 13:42:47 [INFO] received CSR 2020/01/06 13:42:47 [INFO] generating key: rsa-2048 2020/01/06 13:42:47 [INFO] encoded CSR 2020/01/06 13:42:47 [INFO] signed certificate with serial number 268276380983442021656020268926931973684313260543 2020/01/06 13:42:47 [WARNING] This certificate lacks a “hosts” field. This makes it unsuitable for websites. For more information see the Baseline Requirements for the Issuance and Management of Publicly-Trusted Certificates, v.1.1.6, from the CA/Browser Forum (https://cabforum.org); specifically, section 10.2.3 (“Information Requirements”). certs]# ls client* -l -rw-r—r— 1 root root 993 Jan 6 13:42 client.csr -rw-r—r— 1 root root 280 Jan 6 13:42 client-csr.json -rw———- 1 root root 1679 Jan 6 13:42 client-key.pem -rw-r—r— 1 root root 1363 Jan 6 13:42 client.pem
- 签发server证书（apiserver和其它k8s组件通信使用）
hosts中将所有可能作为apiserver的ip添加进去，VIP 10.4.7.10 也要加入
[root@hdss7-200 certs]# vim /opt/certs/apiserver-csr.json { “CN”: “k8s-apiserver”, “hosts”: [ “127.0.0.1”, “192.168.0.1”, “kubernetes.default”, “kubernetes.default.svc”, “kubernetes.default.svc.cluster”, “kubernetes.default.svc.cluster.local”, “10.4.7.10”, “10.4.7.21”, “10.4.7.22”, “10.4.7.23” ], “key”: { “algo”: “rsa”, “size”: 2048 }, “names”: [ { “C”: “CN”, “ST”: “beijing”, “L”: “beijing”, “O”: “od”, “OU”: “ops” } ] } [root@hdss7-200 certs]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=server apiserver-csr.json |cfssl-json -bare apiserver 2020/01/06 13:46:56 [INFO] generate received request 2020/01/06 13:46:56 [INFO] received CSR 2020/01/06 13:46:56 [INFO] generating key: rsa-2048 2020/01/06 13:46:56 [INFO] encoded CSR 2020/01/06 13:46:56 [INFO] signed certificate with serial number 573076691386375893093727554861295529219004473872 2020/01/06 13:46:56 [WARNING] This certificate lacks a “hosts” field. This makes it unsuitable for websites. For more information see the Baseline Requirements for the Issuance and Management of Publicly-Trusted Certificates, v.1.1.6, from the CA/Browser Forum (https://cabforum.org); specifically, section 10.2.3 (“Information Requirements”). [root@hdss7-200 certs]# ls apiserver* -l -rw-r—r— 1 root root 1249 Jan 6 13:46 apiserver.csr -rw-r—r— 1 root root 566 Jan 6 13:45 apiserver-csr.json -rw———- 1 root root 1675 Jan 6 13:46 apiserver-key.pem -rw-r—r— 1 root root 1598 Jan 6 13:46 apiserver.pem
- 证书下发
certs]# for i in 21 22;do echo hdss7-$i;ssh hdss7-$i “mkdir /opt/kubernetes/server/bin/certs”;scp apiserver-key.pem apiserver.pem ca-key.pem ca.pem client-key.pem client.pem hdss7-$i:/opt/kubernetes/server/bin/certs/;done
<a name="ya6eY"></a>
#### 配置apiserver日志审计
aipserver 涉及的服务器：hdss7-21，hdss7-22
bin]# mkdir /opt/kubernetes/conf bin]# vim /opt/kubernetes/conf/audit.yaml # 打开文件后，设置 :set paste，避免自动缩进 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:
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.
- group: “” # core API group
resources: [“configmaps”]
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:
- 创建启动脚本
这里需要修改 --etcd-servers https://10.4.7.12:2379,https://10.4.7.21:2379,https://10.4.7.22:2379 分别三台etcd的地址
bin]# vim /opt/kubernetes/server/bin/kube-apiserver-startup.sh
#!/bin/bash
WORK_DIR=$(dirname $(readlink -f $0))
[ $? -eq 0 ] && cd $WORK_DIR || exit
/opt/kubernetes/server/bin/kube-apiserver \
--apiserver-count 2 \
--audit-log-path /data/logs/kubernetes/kube-apiserver/audit-log \
--audit-policy-file ../../conf/audit.yaml \
--authorization-mode RBAC \
--client-ca-file ./certs/ca.pem \
--requestheader-client-ca-file ./certs/ca.pem \
--enable-admission-plugins NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,MutatingAdmissionWebhook,ValidatingAdmissionWebhook,ResourceQuota \
--etcd-cafile ./certs/ca.pem \
--etcd-certfile ./certs/client.pem \
--etcd-keyfile ./certs/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 ./certs/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 ./certs/client.pem \
--kubelet-client-key ./certs/client-key.pem \
--log-dir /data/logs/kubernetes/kube-apiserver \
--tls-cert-file ./certs/apiserver.pem \
--tls-private-key-file ./certs/apiserver-key.pem \
--v 2
配置supervisor启动配置
bin]# vim /etc/supervisord.d/kube-apiserver.ini [program:kube-apiserver-7-21] command=/opt/kubernetes/server/bin/kube-apiserver-startup.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-apiserver/apiserver.stdout.log stdout_logfile_maxbytes=64MB stdout_logfile_backups=5 stdout_capture_maxbytes=1MB stdout_events_enabled=false bin]# mkdir -p /data/logs/kubernetes/kube-apiserver/ bin]# supervisorctl update bin]# supervisorctl status etcd-server-7-21 RUNNING pid 23637, uptime 22:26:08 kube-apiserver-7-21 RUNNING pid 32591, uptime 0:05:37启停apiserver
~]# supervisorctl start kube-apiserver-7-21 ~]# supervisorctl stop kube-apiserver-7-21 ~]# supervisorctl restart kube-apiserver-7-21 ~]# supervisorctl status kube-apiserver-7-21查看进程
bin]# netstat -lntp|grep api tcp 0 0 127.0.0.1:8080 0.0.0.0:* LISTEN 32595/kube-apiserve tcp6 0 0 :::6443 :::* LISTEN 32595/kube-apiserve bin]# ps uax|grep kube-apiserver|grep -v grep root 32591 0.0 0.0 115296 1476 ? S 20:17 0:00 /bin/bash /opt/kubernetes/server/bin/kube-apiserver-startup.sh root 32595 3.0 2.3 402720 184892 ? Sl 20:17 0:16 /opt/kubernetes/server/bin/kube-apiserver --apiserver-count 2 --audit-log-path /data/logs/kubernetes/kube-apiserver/audit-log --audit-policy-file ../../conf/audit.yaml --authorization-mode RBAC --client-ca-file ./certs/ca.pem --requestheader-client-ca-file ./certs/ca.pem --enable-admission-plugins NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,MutatingAdmissionWebhook,ValidatingAdmissionWebhook,ResourceQuota --etcd-cafile ./certs/ca.pem --etcd-certfile ./certs/client.pem --etcd-keyfile ./certs/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 ./certs/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 ./certs/client.pem --kubelet-client-key ./certs/client-key.pem --log-dir /data/logs/kubernetes/kube-apiserver --tls-cert-file ./certs/apiserver.pem --tls-private-key-file ./certs/apiserver-key.pem --v 2配置apiserver L4代理
nginx配置
这里只做了一台机器 所以没有做keepalived
~]# yum install -y nginx ~]# vim /etc/nginx/nginx.conf # 末尾加上以下内容，stream 只能加在 main 中 # 此处只是简单配置下nginx，实际生产中，建议进行更合理的配置 stream { log_format proxy '$time_local|$remote_addr|$upstream_addr|$protocol|$status|' '$session_time|$upstream_connect_time|$bytes_sent|$bytes_received|' '$upstream_bytes_sent|$upstream_bytes_received' ; upstream kube-apiserver { server 10.4.7.21:6443 max_fails=3 fail_timeout=30s; server 10.4.7.22:6443 max_fails=3 fail_timeout=30s; } server { listen 7443; proxy_connect_timeout 2s; proxy_timeout 900s; proxy_pass kube-apiserver; access_log /var/log/nginx/proxy.log proxy; } } ~]# systemctl start nginx; systemctl enable nginx ~]# curl 127.0.0.1:7443 # 测试几次 Client sent an HTTP request to an HTTPS server. ~]# cat /var/log/nginx/proxy.log 06/Jan/2020:21:00:27 +0800|127.0.0.1|10.4.7.21:6443|TCP|200|0.001|0.000|76|78|78|76 06/Jan/2020:21:05:03 +0800|127.0.0.1|10.4.7.22:6443|TCP|200|0.020|0.019|76|78|78|76 06/Jan/2020:21:05:04 +0800|127.0.0.1|10.4.7.21:6443|TCP|200|0.001|0.001|76|78|78|76controller-manager 安装
controller-manager 涉及的服务器：hdss7-21，hdss7-22
controller-manager 设置为只调用当前机器的 apiserver，走127.0.0.1网卡，因此不配制SSL证书配置启动脚本
创建启动脚本
~]# vim /opt/kubernetes/server/bin/kube-controller-manager-startup.sh
#!/bin/sh
WORK_DIR=$(dirname $(readlink -f $0))
[ $? -eq 0 ] && cd $WORK_DIR || exit
/opt/kubernetes/server/bin/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 ./certs/ca-key.pem \
--service-cluster-ip-range 192.168.0.0/16 \
--root-ca-file ./certs/ca.pem \
--v 2
~]# chmod u+x /opt/kubernetes/server/bin/kube-controller-manager-startup.sh
- 配置supervisor启动配置
~]# vim /etc/supervisord.d/kube-controller-manager.ini [program:kube-controller-manager-7-21] command=/opt/kubernetes/server/bin/kube-controller-manager-startup.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)
~]# supervisorctl update
kube-controller-manager-7-21: stopped
kube-controller-manager-7-21: updated process group
~]# supervisorctl status
etcd-server-7-21 RUNNING pid 23637, uptime 1 day, 0:16:54
kube-apiserver-7-21 RUNNING pid 32591, uptime 1:56:23
kube-controller-manager-7-21 RUNNING pid 33357, uptime 0:00:38
kube-scheduler安装
kube-scheduler 涉及的服务器：hdss7-21，hdss7-22
kube-scheduler 设置为只调用当前机器的 apiserver，走127.0.0.1网卡，因此不配制SSL证书
- 创建启动脚本
```
~]# vim /opt/kubernetes/server/bin/kube-scheduler-startup.sh
!/bin/sh
WORK_DIR=$(dirname $(readlink -f $0)) [ $? -eq 0 ] && cd $WORK_DIR || exit
/opt/kubernetes/server/bin/kube-scheduler \ —leader-elect \ —log-dir /data/logs/kubernetes/kube-scheduler \ —master http://127.0.0.1:8080 \ —v 2 ~]# chmod u+x /opt/kubernetes/server/bin/kube-scheduler-startup.sh ~]# mkdir -p /data/logs/kubernetes/kube-scheduler
- 配置supervisor启动配置
~]# vim /etc/supervisord.d/kube-scheduler.ini
[program:kube-scheduler-7-21]
command=/opt/kubernetes/server/bin/kube-scheduler-startup.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-scheduler/scheduler.stdout.log
stdout_logfile_maxbytes=64MB
stdout_logfile_backups=4
stdout_capture_maxbytes=1MB
stdout_events_enabled=false
~]# supervisorctl update kube-scheduler-7-21: stopped kube-scheduler-7-21: updated process group ~]# supervisorctl status etcd-server-7-21 RUNNING pid 23637, uptime 1 day, 0:26:53 kube-apiserver-7-21 RUNNING pid 32591, uptime 2:06:22 kube-controller-manager-7-21 RUNNING pid 33357, uptime 0:10:37 kube-scheduler-7-21 RUNNING pid 33450, uptime 0:01:18
<a name="qh755"></a>
### 检查主控节点状态
~]# ln -s /opt/kubernetes/server/bin/kubectl /usr/local/bin/
~]# kubectl get cs
NAME STATUS MESSAGE ERROR
scheduler Healthy ok
controller-manager Healthy ok
etcd-1 Healthy {“health”: “true”}
etcd-0 Healthy {“health”: “true”}
etcd-2 Healthy {“health”: “true”}
如果这里你只展示一个etcd节点 那就是apiserver那里配置错了 填了同一个etcd的地址 别问我怎么知道的 
<a name="6Tk5j"></a>
## 运算节点部署
<a name="tc2I0"></a>
### kubelet 部署
<a name="840GX"></a>
#### 签发证书
证书签发在 hdss7-200 操作
~]# cd /opt/certs/ certs]# vim kubelet-csr.json # 将所有可能的kubelet机器IP添加到hosts中 { “CN”: “k8s-kubelet”, “hosts”: [ “127.0.0.1”, “10.4.7.10”, “10.4.7.21”, “10.4.7.22”, “10.4.7.23”, “10.4.7.24”, “10.4.7.25”, “10.4.7.26”, “10.4.7.27”, “10.4.7.28” ], “key”: { “algo”: “rsa”, “size”: 2048 }, “names”: [ { “C”: “CN”, “ST”: “beijing”, “L”: “beijing”, “O”: “od”, “OU”: “ops” } ] } certs]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=server kubelet-csr.json | cfssl-json -bare kubelet 2020/01/06 23:10:56 [INFO] generate received request 2020/01/06 23:10:56 [INFO] received CSR 2020/01/06 23:10:56 [INFO] generating key: rsa-2048 2020/01/06 23:10:56 [INFO] encoded CSR 2020/01/06 23:10:56 [INFO] signed certificate with serial number 61221942784856969738771370531559555767101820379 2020/01/06 23:10:56 [WARNING] This certificate lacks a “hosts” field. This makes it unsuitable for websites. For more information see the Baseline Requirements for the Issuance and Management of Publicly-Trusted Certificates, v.1.1.6, from the CA/Browser Forum (https://cabforum.org); specifically, section 10.2.3 (“Information Requirements”). certs]# ls kubelet* -l -rw-r—r— 1 root root 1115 Jan 6 23:10 kubelet.csr -rw-r—r— 1 root root 452 Jan 6 23:10 kubelet-csr.json -rw———- 1 root root 1675 Jan 6 23:10 kubelet-key.pem -rw-r—r— 1 root root 1468 Jan 6 23:10 kubelet.pem
certs]# scp kubelet.pem kubelet-key.pem hdss7-21:/opt/kubernetes/server/bin/certs/ certs]# scp kubelet.pem kubelet-key.pem hdss7-22:/opt/kubernetes/server/bin/certs/
<a name="03RJ2"></a>
#### 创建kubelet配置
kubelet配置在 hdss7-21 hdss7-22 操作
- set-cluster # 创建需要连接的集群信息，可以创建多个k8s集群信息
~]# kubectl config set-cluster myk8s \ —certificate-authority=/opt/kubernetes/server/bin/certs/ca.pem \ —embed-certs=true \ —server=https://172.23.187.175:7443 \ —kubeconfig=/opt/kubernetes/conf/kubelet.kubeconfig
- set-credentials # 创建用户账号，即用户登陆使用的客户端私有和证书，可以创建多个证书
~]# kubectl kubectl config set-credentials k8s-node \ —client-certificate=/opt/kubernetes/server/bin/certs/client.pem \ —client-key=/opt/kubernetes/server/bin/certs/client-key.pem \ —embed-certs=true \ —kubeconfig=/opt/kubernetes/conf/kubelet.kubeconfig
- set-context # 设置context，即确定账号和集群对应关系
[root@hdss7-21 ~]# kubectl config set-context myk8s-context \ —cluster=myk8s \ —user=k8s-node \ —kubeconfig=/opt/kubernetes/conf/kubelet.kubeconfig
- use-context # 设置当前使用哪个context
~]# kubectl config use-context myk8s-context —kubeconfig=/opt/kubernetes/conf/kubelet.kubeconfig
把此配置文件传给另一台就不用做以上四步
scp /opt/kubernetes/conf/kubelet.kubeconfig hdss7-22:/opt/kubernetes/conf/
<a name="q5NaY"></a>
#### 授权k8s-node用户
**此步骤只需要在一台master节点执行**<br />授权 k8s-node 用户绑定集群角色 system:node ，让 k8s-node 成为具备运算节点的权限。
~]# vim k8s-node.yaml apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRoleBinding metadata: name: k8s-node roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: system:node subjects:
- apiGroup: rbac.authorization.k8s.io
kind: User
name: k8s-node
~]# kubectl create -f k8s-node.yaml
clusterrolebinding.rbac.authorization.k8s.io/k8s-node created
~]# kubectl get clusterrolebinding k8s-node
NAME AGE
k8s-node 36s
~]# docker image pull kubernetes/pause ~]# docker image tag kubernetes/pause:latest harbor.od.com/public/pause:latest ~]# docker login -u admin harbor.od.com ~]# docker image push harbor.od.com/public/pause:latest<a name="RChx7"></a> #### 装备pause镜像 将pause镜像放入到harbor私有仓库中，仅在 hdss7-200 操作：
~]# vim /opt/kubernetes/server/bin/kubelet-startup.sh<a name="DkJ3g"></a> #### 创建启动脚本 在node节点创建脚本并启动kubelet，涉及服务器： hdss7-21 hdss7-22!/bin/sh
WORK_DIR=$(dirname $(readlink -f $0)) [ $? -eq 0 ] && cd $WORK_DIR || exit
/opt/kubernetes/server/bin/kubelet \ —anonymous-auth=false \ —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” \ —client-ca-file ./certs/ca.pem \ —tls-cert-file ./certs/kubelet.pem \ —tls-private-key-file ./certs/kubelet-key.pem \ —hostname-override hdss7-21.host.com \ —image-gc-high-threshold 20 \ —image-gc-low-threshold 10 \ —kubeconfig ../../conf/kubelet.kubeconfig \ —log-dir /data/logs/kubernetes/kube-kubelet \ —pod-infra-container-image harbor.od.com/public/pause:latest \ —root-dir /data/kubelet ~]# chmod u+x /opt/kubernetes/server/bin/kubelet-startup.sh ~]# mkdir -p /data/logs/kubernetes/kube-kubelet /data/kubelet
~]# vim /etc/supervisord.d/kube-kubelet.ini [program:kube-kubelet-7-21] command=/opt/kubernetes/server/bin/kubelet-startup.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=5 stdout_capture_maxbytes=1MB stdout_events_enabled=false
~]# supervisorctl update
~]# supervisorctl status
etcd-server-7-21 RUNNING pid 23637, uptime 1 day, 14:56:25
kube-apiserver-7-21 RUNNING pid 32591, uptime 16:35:54
kube-controller-manager-7-21 RUNNING pid 33357, uptime 14:40:09
kube-kubelet-7-21 RUNNING pid 37232, uptime 0:01:08
kube-scheduler-7-21 RUNNING pid 33450, uptime 14:30:50
~]# kubectl get node
NAME STATUS ROLES AGE VERSION
hdss7-21.host.com Ready
<a name="uzNPY"></a>
#### 修改节点角色
使用 kubectl get nodes 获取的Node节点角色为空，可以按照以下方式修改
~]# kubectl get node
NAME STATUS ROLES AGE VERSION
hdss7-21.host.com Ready
<a name="F0OWJ"></a>
### kube-proxy部署
<a name="oUoud"></a>
#### 签发证书
证书签发在 hdss7-200 操作
[root@hdss7-200 ~]# cd /opt/certs/ [root@hdss7-200 certs]# vim kube-proxy-csr.json # CN 其实是k8s中的角色 { “CN”: “system:kube-proxy”, “key”: { “algo”: “rsa”, “size”: 2048 }, “names”: [ { “C”: “CN”, “ST”: “beijing”, “L”: “beijing”, “O”: “od”, “OU”: “ops” } ] } certs]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=client kube-proxy-csr.json |cfssl-json -bare kube-proxy-client 2020/01/07 21:45:53 [INFO] generate received request 2020/01/07 21:45:53 [INFO] received CSR 2020/01/07 21:45:53 [INFO] generating key: rsa-2048 2020/01/07 21:45:53 [INFO] encoded CSR 2020/01/07 21:45:53 [INFO] signed certificate with serial number 620191685968917036075463174423999296907693104226 2020/01/07 21:45:53 [WARNING] This certificate lacks a “hosts” field. This makes it unsuitable for websites. For more information see the Baseline Requirements for the Issuance and Management of Publicly-Trusted Certificates, v.1.1.6, from the CA/Browser Forum (https://cabforum.org); certs]# ls kube-proxy-c* -l # 因为kube-proxy使用的用户是kube-proxy，不能使用client证书，必须要重新签发自己的证书 -rw-r—r— 1 root root 1005 Jan 7 21:45 kube-proxy-client.csr -rw———- 1 root root 1675 Jan 7 21:45 kube-proxy-client-key.pem -rw-r—r— 1 root root 1375 Jan 7 21:45 kube-proxy-client.pem -rw-r—r— 1 root root 267 Jan 7 21:45 kube-proxy-csr.json
certs]# scp kube-proxy-client-key.pem kube-proxy-client.pem hdss7-21:/opt/kubernetes/server/bin/certs/ 100% 1375 870.6KB/s 00:00
certs]# scp kube-proxy-client-key.pem kube-proxy-client.pem hdss7-22:/opt/kubernetes/server/bin/certs/
<a name="LDq8L"></a>
#### 创建kube-proxy配置
在所有node节点创建，涉及服务器：hdss7-21 ，hdss7-22
这里—server=https://10.4.7.10:7443 需要修改位反代的ip地址 ~]# kubectl config set-cluster myk8s \ —certificate-authority=/opt/kubernetes/server/bin/certs/ca.pem \ —embed-certs=true \ —server=https://172.23.187.175:7443 \ —kubeconfig=/opt/kubernetes/conf/kube-proxy.kubeconfig
~]# kubectl config set-credentials kube-proxy \ —client-certificate=/opt/kubernetes/server/bin/certs/kube-proxy-client.pem \ —client-key=/opt/kubernetes/server/bin/certs/kube-proxy-client-key.pem \ —embed-certs=true \ —kubeconfig=/opt/kubernetes/conf/kube-proxy.kubeconfig
~]# kubectl config set-context myk8s-context \ —cluster=myk8s \ —user=kube-proxy \ —kubeconfig=/opt/kubernetes/conf/kube-proxy.kubeconfig
~]# kubectl config use-context myk8s-context —kubeconfig=/opt/kubernetes/conf/kube-proxy.kubeconfig
把生成配置文件传到另一台机器 那边就可以不用做以上四步
conf]# scp kube-proxy.kubeconfig hdss7-22:/opt/kubernetes/conf/
<a name="ZnQJk"></a>
#### 加载ipvs模块
kube-proxy 共有3种流量调度模式，分别是 namespace，iptables，ipvs，其中ipvs性能最好。
[root@hdss7-21 ~]# for i in $(ls /usr/lib/modules/$(uname -r)/kernel/net/netfilter/ipvs|grep -o “^[^.]*”);do echo $i; /sbin/modinfo -F filename $i >/dev/null 2>&1 && /sbin/modprobe $i;done [root@hdss7-21 ~]# lsmod | grep ip_vs # 查看ipvs模块
<a name="oTBhP"></a>
#### 创建启动脚本
—hostname-override 需要修改为主机名
~]# vim /opt/kubernetes/server/bin/kube-proxy-startup.sh
!/bin/sh
WORK_DIR=$(dirname $(readlink -f $0)) [ $? -eq 0 ] && cd $WORK_DIR || exit
/opt/kubernetes/server/bin/kube-proxy \ —cluster-cidr 172.7.0.0/16 \ —hostname-override hdss7-21.host.com \ —proxy-mode=ipvs \ —ipvs-scheduler=nq \ —kubeconfig ../../conf/kube-proxy.kubeconfig ~]# chmod u+x /opt/kubernetes-v1.15.2/server/bin/kube-proxy-startup.sh ~]# mkdir -p /data/logs/kubernetes/kube-proxy
~]# vim /etc/supervisord.d/kube-proxy.ini
[program:kube-proxy-7-21]
command=/opt/kubernetes/server/bin/kube-proxy-startup.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/proxy.stdout.log
stdout_logfile_maxbytes=64MB
stdout_logfile_backups=5
stdout_capture_maxbytes=1MB
stdout_events_enabled=false
~]# supervisorctl update
<a name="GtBRc"></a>
#### 验证集群
~]# supervisorctl status etcd-server-7-21 RUNNING pid 23637, uptime 2 days, 0:27:18 kube-apiserver-7-21 RUNNING pid 32591, uptime 1 day, 2:06:47 kube-controller-manager-7-21 RUNNING pid 33357, uptime 1 day, 0:11:02 kube-kubelet-7-21 RUNNING pid 37232, uptime 9:32:01 kube-proxy-7-21 RUNNING pid 47088, uptime 0:06:19 kube-scheduler-7-21 RUNNING pid 33450, uptime 1 day, 0:01:43
~]# yum install -y ipvsadm
~]# 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
-> 10.4.7.21:6443 Masq 1 0 0
-> 10.4.7.22:6443 Masq 1 0 0
~]# kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes ClusterIP 192.168.0.1
创建yaml文件
```shell
~]# cat nginx-ds.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: 80
创建资源
~]# kubectl create -f nginx-ds.yaml
daemonset.extensions/nginx-ds created
~]# kubectl get pods
NAME READY STATUS RESTARTS AGE
nginx-ds-5lz6s 0/1 ContainerCreating 0 4s
nginx-ds-cx2bg 0/1 ContainerCreating 0 4s
~]# kubectl get pods
NAME READY STATUS RESTARTS AGE
nginx-ds-5lz6s 1/1 Running 0 9m14s
nginx-ds-cx2bg 1/1 Running 0 9m14s
~]# kubectl get pods -owide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
nginx-ds-5lz6s 1/1 Running 0 22m 172.187.173.2 alice002.host.com <none> <none>
nginx-ds-cx2bg 1/1 Running 0 22m 172.187.174.2 alice003.host.com <none> <none>
这里集群里只有一台登陆了harbor 没搞懂为什么另一台也可以pull到镜像
报错排查
更多报错请查看https://www.yuque.com/grep/k8serror
bind报错network unreachable resolving ‘./DNSKEY/IN’: 2001:dc3::35#53
[root@alice38 named]# systemctl status named
● named.service - Berkeley Internet Name Domain (DNS)
Loaded: loaded (/usr/lib/systemd/system/named.service; disabled; vendor preset: disabled)
Active: active (running) since Sat 2021-01-16 19:08:34 CST; 6s ago
Process: 6008 ExecStop=/bin/sh -c /usr/sbin/rndc stop > /dev/null 2>&1 || /bin/kill -TERM $MAINPID (code=exited, status=0/SUCCESS)
Process: 6023 ExecStart=/usr/sbin/named -u named -c ${NAMEDCONF} $OPTIONS (code=exited, status=0/SUCCESS)
Process: 6020 ExecStartPre=/bin/bash -c if [ ! "$DISABLE_ZONE_CHECKING" == "yes" ]; then /usr/sbin/named-checkconf -z "$NAMEDCONF"; else echo "Checking of zone files is disabled"; fi (code=exited, status=0/SUCCESS)
Main PID: 6026 (named)
Tasks: 4
Memory: 52.1M
CGroup: /system.slice/named.service
└─6026 /usr/sbin/named -u named -c /etc/named.conf
Jan 16 19:08:36 alice38 named[6026]: network unreachable resolving './DNSKEY/IN': 2001:dc3::35#53
Jan 16 19:08:36 alice38 named[6026]: network unreachable resolving './DNSKEY/IN': 2001:500:9f::42#53
Jan 16 19:08:36 alice38 named[6026]: network unreachable resolving './DNSKEY/IN': 2001:7fd::1#53
Jan 16 19:08:36 alice38 named[6026]: network unreachable resolving './DNSKEY/IN': 2001:500:1::53#53
Jan 16 19:08:36 alice38 named[6026]: network unreachable resolving './DNSKEY/IN': 2001:500:2::c#53
Jan 16 19:08:36 alice38 named[6026]: network unreachable resolving './DNSKEY/IN': 2001:7fe::53#53
Jan 16 19:08:36 alice38 named[6026]: network unreachable resolving './DNSKEY/IN': 2001:503:ba3e::2:30#53
Jan 16 19:08:36 alice38 named[6026]: network unreachable resolving './DNSKEY/IN': 2001:500:2f::f#53
Jan 16 19:08:36 alice38 named[6026]: network unreachable resolving './DNSKEY/IN': 2001:500:2d::d#53
Jan 16 19:08:40 alice38 named[6026]: managed-keys-zone: Key 20326 for zone . acceptance timer complete: key now trusted
解决办法
vi /etc/sysconfig/named
增加一行OPTIONS=”-4”
[root@alice38 named]# cat /etc/sysconfig/named
# BIND named process options
# ~~~~~~~~~~~~~~~~~~~~~~~~~~
#
# OPTIONS="whatever" -- These additional options will be passed to named
# at startup. Don't add -t here, enable proper
# -chroot.service unit file.
# Use of parameter -c is not supported here. Extend
# systemd named*.service instead. For more
# information please read the following KB article:
# https://access.redhat.com/articles/2986001
#
# DISABLE_ZONE_CHECKING -- By default, service file calls named-checkzone
# utility for every zone to ensure all zones are
# valid before named starts. If you set this option
# to 'yes' then service file doesn't perform those
# checks.
OPTIONS="-4"
重启
[root@alice38 named]# systemctl restart named
[root@alice38 named]# systemctl status named
● named.service - Berkeley Internet Name Domain (DNS)
Loaded: loaded (/usr/lib/systemd/system/named.service; disabled; vendor preset: disabled)
Active: active (running) since Sat 2021-01-16 19:16:53 CST; 1s ago
Process: 6742 ExecStop=/bin/sh -c /usr/sbin/rndc stop > /dev/null 2>&1 || /bin/kill -TERM $MAINPID (code=exited, status=0/SUCCESS)
Process: 6756 ExecStart=/usr/sbin/named -u named -c ${NAMEDCONF} $OPTIONS (code=exited, status=0/SUCCESS)
Process: 6753 ExecStartPre=/bin/bash -c if [ ! "$DISABLE_ZONE_CHECKING" == "yes" ]; then /usr/sbin/named-checkconf -z "$NAMEDCONF"; else echo "Checking of zone files is disabled"; fi (code=exited, status=0/SUCCESS)
Main PID: 6759 (named)
Tasks: 4
Memory: 51.7M
CGroup: /system.slice/named.service
└─6759 /usr/sbin/named -u named -c /etc/named.conf -4
Jan 16 19:16:53 alice38 named[6759]: zone 0.in-addr.arpa/IN: loaded serial 0
Jan 16 19:16:53 alice38 named[6759]: zone localhost.localdomain/IN: loaded serial 0
Jan 16 19:16:53 alice38 named[6759]: zone 1.0.0.127.in-addr.arpa/IN: loaded serial 0
Jan 16 19:16:53 alice38 named[6759]: zone localhost/IN: loaded serial 0
Jan 16 19:16:53 alice38 named[6759]: zone od.com/IN: loaded serial 2020011601
Jan 16 19:16:53 alice38 named[6759]: zone host.com/IN: loaded serial 2020011601
Jan 16 19:16:53 alice38 named[6759]: zone 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa/IN: loaded serial 0
Jan 16 19:16:53 alice38 named[6759]: all zones loaded
Jan 16 19:16:53 alice38 systemd[1]: Started Berkeley Internet Name Domain (DNS).
harbor/docker login登陆不上
报错： Error response from daemon: Get http://harbor.od.com/v2/: Get http://harbor.od.com:180/service/token?account=admin&client_id=docker&offline_token=true&service=harbor-registry: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)
K8S中Harbor使用Nginx反向代理无法获取image - liucx - 博客园 (2021_1_30 下午12_17_37).html
解决办法：
https://www.cnblogs.com/liucx/p/12981023.html
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