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Copy path二进制安装K8s.txt
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二进制安装K8s.txt
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视频网络：
service网络：192.168.0.0/16
pod网络：172.7.0.0/16
节点网络：10.4.7.0/24
文档网络：
service网络：10.96.0.0/22(10.96.0.1-10.96.3.254)
pod网络：172.6.0.0/16
节点网络：192.168.6.0/24
cyou网络
service网络：10.4.0.0/16
pod网络：172.7.0.0/16
节点网络：192.168.2.0/24
服务器系统ubuntu18.04
cyou2-201
cyou2-202
cyou2-203 运维主机
cyou2-204 代理节点，etcd
cyou2-205 代理节点，etcd
Docker配置文件
/etc/docker/daemon.json
{
"registry-mirrors": ["https://registry.docker-cn.com","http://hub-mirror.c.163.com"],
"bip": "172.7.201.1/24",
"exec-opts": ["native.cgroupdriver=systemd"],
"insecure-registries": ["harbor.cyou.com"]
}
运维主机(cyou2-203)：
准备证书签发环境
ubuntu@cyou2-203:~$ curl -s -L -o /usr/bin/cfssl https://pkg.cfssl.org/R1.2/cfssl_linux-amd64
ubuntu@cyou2-203:~$ curl -s -L -o /usr/bin/cfssljson https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64
ubuntu@cyou2-203:~$ curl -s -L -o /usr/bin/cfssl-certinfo https://pkg.cfssl.org/R1.2/cfssl-certinfo_linux-amd64
ubuntu@cyou2-203:~$ sudo chmod +x /usr/bin/cfssl*
创建生成ca证书的JSON配置文件
ubuntu@cyou2-203:~$ vi /opt/certs/ca-config.json
{
"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"
]
}
}
}
}
证书类型：
client： 客户端使用，用于服务器端认证客户端，比如etcdctl，etcd proxy, fleetctl, docker客户端
server： 服务端使用，客户端以此验证服务器端身份，比如docker服务端，kebe-apiserver
peer： 双向证书，用于etcd集群成员间通信
创建生成CA证书签名请求(csr)的JSON配置文件
证书存放目录/opt/certs/
ubuntu@cyou2-203:~$ vi /opt/certs/ca-csr.json
{
"CN": "kubernetes-ca",
"hosts": [
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "hunan",
"L": "changsha",
"O": "od",
"OU": "ops"
}
],
"ca": {
"expiry": "175200h"
}
}
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
生成CA证书和私钥
ubuntu@cyou2-203:/opt/certs$ sudo cfssl gencert -initca ca-csr.json | sudo cfssljson -bare ca -
2019/01/18 09:31:19 [INFO] generating a new CA key and certificate from CSR
2019/01/18 09:31:19 [INFO] generate received request
2019/01/18 09:31:19 [INFO] received CSR
2019/01/18 09:31:19 [INFO] generating key: rsa-2048
2019/01/18 09:31:19 [INFO] encoded CSR
2019/01/18 09:31:19 [INFO] signed certificate with serial number 345276964513449660162382535043012874724976422200
部署Etcd集群(cyou2-201,cyou2-202,cyou2-205)
版本：3.1.20
1、签发证书，集群通信通过https
证书申请请求文件
ubuntu@cyou2-203:/opt/certs$ vi etcd-peer-csr.json
{
"CN": "etcd-peer",
# etcd可能部署的主机IPi地址
"hosts": [
"192.168.2.201",
"192.168.2.202",
"192.168.2.203",
"192.168.2.204",
"192.168.2.205"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "hunan",
"L": "changsha",
"O": "cyou",
"OU": "ops"
}
]
}
生成etcd证书和私钥
ubuntu@cyou2-203:/opt/certs$ sudo fssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=server etcd-peer-csr.json | sudo cfssljson -bare etcd-peer
2019/01/18 09:35:09 [INFO] generate received request
2019/01/18 09:35:09 [INFO] received CSR
2019/01/18 09:35:09 [INFO] generating key: rsa-2048
2019/01/18 0935:09 [INFO] encoded CSR
2019/01/18 09:35:10 [INFO] signed certificate with serial number 324191491384928915605254764031096067872154649010
2019/01/18 09:35:10 [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").
etcd部署节点上：
创建etcd用户
ubuntu@cyou2-205:~$ useradd -s /sbin/nologin -M etcd
需要安装etcd集群的主机上，解压，软连接
ubuntu@cyou2-205:~$ tar xf /opt/src/etcd-v3.1.18-linux-amd64.tar.gz -C /opt
ubuntu@cyou2-205:~$ ln -s /opt/etcd-v3.1.18-linux-amd64 /opt/etcd
ubuntu@cyou2-205:~$ ls -l /opt
lrwxrwxrwx 1 root root 24 Jan 18 14:21 etcd -> etcd-v3.1.18-linux-amd64
drwxr-xr-x 4 478493 89939 166 Jun 16 2018 etcd-v3.1.18-linux-amd64
drwxr-xr-x 2 root root 45 Jan 18 14:21 src
创建目录，拷贝证书，私钥
ubuntu@cyou2-205:~$ mkdir -p /data/etcd /data/logs/etcd-server
ubuntu@cyou2-205:~$ chown -R etcd.etcd /data/etcd /data/logs/etcd-server/ /opt/etcd /opt/etcd-v3.1.20
ubuntu@cyou2-205:~$ mkdir -p /opt/etcd/certs
将运维主机(cyou2-203)上的ca.pem etcd-peer-key.pem etcd-peer.pem 证书拷贝/opt/etcd/certs目录下，注意私钥文件权限为600
ubuntu@cyou2-205:/opt/etcd/certs$ ll
drwxr-xr-x 2 etcd etcd 4096 7月 7 21:39 ./
drwxr-xr-x 4 ubuntu ubuntu 4096 7月 7 21:42 ../
-rw-r--r-- 1 etcd etcd 1359 7月 7 21:39 ca.pem
-rw------- 1 etcd etcd 1675 7月 7 21:39 etcd-peer-key.pem
-rw-r--r-- 1 etcd etcd 1444 7月 7 21:39 etcd-peer.pem
创建etcd服务启动脚本
ubuntu@cyou2-205:/opt/etcd$ vi etcd-server-startup.sh
#!/bin/sh
./etcd --name etcd-server-2-205 \
--data-dir /data/etcd/etcd-server \
--listen-peer-urls https://192.168.2.205:2380 \
--listen-client-urls https://192.168.2.205:2379,http://127.0.0.1:2379 \
--quota-backend-bytes 8000000000 \
--initial-advertise-peer-urls https://192.168.2.205:2380 \
--advertise-client-urls https://192.168.2.205:2379,http://127.0.0.1:2379 \
--initial-cluster etcd-server-2-201=https://192.168.2.201:2380,etcd-server-2-202=https://192.168.2.202:2380,etcd-server-2-205=https://192.168.2.205:2380 \
--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
集群之间访问走2380，对外访问走2379
sudo chmod +x /opt/etcd/etcd-server-startup.sh
使用supervisor管理后台进程
sudo apt install supervisor -y
sudo systemctl start supervisor
sudo systemctl enable supervisor
ubuntu@cyou2-205:$ vi /etc/supervisor/conf.d/etcd-server.conf
[program:etcd-server-2-205]
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=22 ; 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)
stopasgroup=true ;
user=etcd ; setuid to this UNIX account to run the program
redirect_stderr=false ; 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=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)
stderr_logfile=/data/logs/etcd-server/etcd.stderr.log ; stderr log path, NONE for none; default AUTO
stderr_logfile_maxbytes=64MB ; max # logfile bytes b4 rotation (default 50MB)
stderr_logfile_backups=4 ; # of stderr logfile backups (default 10)
stderr_capture_maxbytes=1MB ; number of bytes in 'capturemode' (default 0)
stderr_events_enabled=false ; emit events on stderr writes (default false)
# sudo supervisorctl update
ubuntu@cyou2-205:/opt/etcd$ sudo supervisorctl status
etcd-server-2-205 RUNNING pid 1240, uptime 58 days, 1:48:17
# netstat -luntp| grep etcd
必须同时监控2379和2380才是启动成功
其余etcd节点同样做一次，注意IP地址目录等!
部署kube-apiserver集群(cyou2-201,cyou2-202)
版本：1.15.2
运维主机上：
签发client证书,apiserver作为etcd的客户端
创建生成证书签名请求(csr)的JSON配置文件
ubuntu@cyou2-203:/opt/certs$ vi client-csr.json
{
"CN": "k8s-node",
"hosts": [
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "hunan",
"L": "chagnsha",
"O": "cyou",
"OU": "ops"
}
]
}
生成client证书和私钥
ubuntu@cyou2-203:/opt/certs$ sudo cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=client client-csr.json | sudo cfssljson -bare client
2019/01/18 14:02:50 [INFO] generate received request
2019/01/18 14:02:50 [INFO] received CSR
2019/01/18 14:02:50 [INFO] generating key: rsa-2048
2019/01/18 14:02:51 [INFO] encoded CSR
2019/01/18 14:02:51 [INFO] signed certificate with serial number 423108651040279300242366884100637974155370861448
2019/01/18 14:02:51 [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").
签发server证书，作为apiserver对外提供服务需要的证书
ubuntu@cyou2-203:/opt/certs$ vi apiserver-csr.json
{
"CN": "apiserver",
"hosts": [
"127.0.0.1",
"10.4.0.1",
"kubernetes.default",
"kubernetes.default.svc",
"kubernetes.default.svc.cluster",
"kubernetes.default.svc.cluster.local",
"192.168.2.200",
"192.168.2.201",
"192.168.2.202",
"192.168.2.203",
"192.168.2.204",
"192.168.2.205",
"192.168.2.206"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "hunan",
"L": "changsha",
"O": "cyou",
"OU": "ops"
}
]
}
host：apiserver可能存在地址，其中192.168.2.200为VIP，虚拟IP，利用keepalived(10.4.0.1为集群IP)
ubuntu@cyou2-203:/opt/certs$ sudo cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=server apiserver-csr.json | sudo cfssljson -bare apiserver
2019/01/18 14:05:44 [INFO] generate received request
2019/01/18 14:05:44 [INFO] received CSR
2019/01/18 14:05:44 [INFO] generating key: rsa-2048
2019/01/18 14:05:46 [INFO] encoded CSR
2019/01/18 14:05:46 [INFO] signed certificate with serial number 633406650960616624590510576685608580490218676227
2019/01/18 14:05:46 [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").
apiserver运算节点上：
拷贝证书，私钥，注意私钥文件属性600
ubuntu@cyou2-201:/opt/kubernetes/server/bin/cert$ ll
-rw------- 1 ubuntu ubuntu 1675 7月 16 20:56 apiserver-key.pem
-rw-r--r-- 1 ubuntu ubuntu 1627 7月 16 20:56 apiserver.pem
-rw------- 1 ubuntu ubuntu 1679 7月 8 21:51 ca-key.pem
-rw-r--r-- 1 ubuntu ubuntu 1359 7月 8 21:50 ca.pem
-rw------- 1 ubuntu ubuntu 1679 7月 8 21:51 client-key.pem
-rw-r--r-- 1 ubuntu ubuntu 1371 7月 8 21:51 client.pem
创建kube-apiserver启动的配置文件
# 日志审计规则
ubuntu@cyou2-201:/opt/kubernetes/server/bin/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"
创建启动脚本
ubuntu@cyou2-201:/opt/kubernetes/server/bin$ vi kube-apiserver.sh
#!/bin/bash
./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 ./cert/ca.pem \
--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://192.168.2.201:2379,https://192.168.2.202:2379,http
s://192.168.2.205:2379 \
--service-account-key-file ./cert/ca-key.pem \
--service-cluster-ip-range 10.4.0.0/16 \
--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
ubuntu@cyou2-201:/opt/kubernetes/server/bin$ sudo chmod +x /opt/kubernetes/server/bin/kube-apiserver.sh
ubuntu@cyou2-201:/opt/kubernetes/server/bin$ sudo mkdir -p /data/logs/kubenetes/kube-apiserver
创建supervisor配置
ubuntu@cyou2-201:/opt/kubernetes/server/bin$ vi /etc/supervisor/conf.d/kube-apiserver.conf
[program:kube-apiserver]
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=22 ; 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)
stopasgroup=true ;
stopwaitsecs=10 ; max num secs to wait b4 SIGKILL (default 10)
user=root ; setuid to this UNIX account to run the program
redirect_stderr=false ; redirect proc stderr to stdout (default false)
stdout_logfile=/data/logs/kubernetes/kube-apiserver/apiserver.stdout.log ; stdout 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)
stderr_logfile=/data/logs/kubernetes/kube-apiserver/apiserver.stderr.log ; stderr log path, NONE for none; default AUTO
stderr_logfile_maxbytes=64MB ; max # logfile bytes b4 rotation (default 50MB)
stderr_logfile_backups=4 ; # of stderr logfile backups (default 10)
stderr_capture_maxbytes=1MB ; number of bytes in 'capturemode' (default 0)
stderr_events_enabled=false
ubuntu@cyou2-201:~$ sudo supervisorctl add kube-apiserver
ubuntu@cyou2-201:~$ sudo supervisorctl status
etcd-server-2-201 RUNNING pid 1641, uptime 58 days, 2:00:05
kube-apiserver RUNNING pid 57962, uptime 1:01:31
其余apiserver节点上照做，注意IP地址目录等!
两个代理节点上(cyou2-204,cyou2-205)
利用nginx进行4层反向代理
在主配置文件中进行配置，追加
ubuntu@cyou2-204:/etc/nginx$ vi nginx.conf
# stream为4层反代，http中为7层
stream {
upstream kube-apiserver {
server 192.168.2.201:6443 max_fails=3 fail_timeout=30s;
server 192.168.2.202:6443 max_fails=3 fail_timeout=30s;
}
server {
listen 7443;
proxy_connect_timeout 2s;
proxy_timeout 900s;
proxy_pass kube-apiserver;
}
}
检查配置文件
ubuntu@cyou2-204:/etc/nginx$sudo nginx -t
ubuntu@cyou2-204:/etc/nginx$sudo systemctl start nginx
ubuntu@cyou2-204:/etc/nginx$sudo systemctl enable nginx
# 监听脚本，监控7443端口
ubuntu@cyou2-204:/etc/nginx$ vi /etc/keepalived/check_port.sh
#!/bin/bash
#keepalived 监控端口脚本
#使用方法：
#在keepalived的配置文件中
#vrrp_script check_port {#创建一个vrrp_script脚本,检查配置
# script "/etc/keepalived/check_port.sh 6379" #配置监听的端口
# interval 2 #检查脚本的频率,单位（秒）
#}
CHK_PORT=$1
if [ -n "$CHK_PORT" ];then
PORT_PROCESS=`ss -lt|grep $CHK_PORT|wc -l`
if [ $PORT_PROCESS -eq 0 ];then
echo "Port $CHK_PORT Is Not Used,End."
exit 1
fi
else
echo "Check Port Cant Be Empty!"
fi
如果上面那个脚本不可用，可用修改过后的
CHK_PORT=$1
if [ -n "$CHK_PORT" ];then
PORT_PROCESS=`ss -lnt|grep $CHK_PORT|wc -l`
if [ $PORT_PROCESS -eq 0 ];then
echo "Port $CHK_PORT Is Not Used,End."
exit 1
fi
else
echo "Check Port Cant Be Empty!"
fi
vi
利用keepalived做高可用，keepalived配置文件
192.168.1.204机器上，主keepalived配置文件，注意其中的interface
ubuntu@cyou2-204:/etc/nginx$ sudo vi /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
router_id 192.168.2.204
}
vrrp_script chk_nginx {
script "/etc/keepalived/check_port.sh 7443"
interval 2
weight -20
}
vrrp_instance VI_1 {
state MASTER
interface ens33
virtual_router_id 251
priority 100
advert_int 1
mcast_src_ip 192.168.2.204
# nopreempt 非抢占式
nopreempt
authentication {
auth_type PASS
auth_pass 11111111
}
track_script {
chk_nginx
}
virtual_ipaddress {
192.168.2.200
}
}
192.168.1.205机器上,从keepalived配置文件吗，注意其中的interface
ubuntu@cyou2-205:/etc/nginx$ vi /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
router_id 192.168.2.205
}
vrrp_script chk_nginx {
script "/etc/keepalived/check_port.sh 7443"
interval 2
weight -20
}
vrrp_instance VI_1 {
state BACKUP
interface ens33
virtual_router_id 251
mcast_src_ip 192.168.2.205
priority 90
advert_int 1
authentication {
auth_type PASS
auth_pass 11111111
}
track_script {
chk_nginx
}
virtual_ipaddress {
192.168.2.200
}
}
两个代理节点上执行:
sudo systemctl start keepalived
sudo systemctl enable keepalived
启动成功后在主keepalived节点上可以查看到虚拟VIP地址
如果出问题检查日志/var/log/message
如果VRP发生飘动，除非做好万全的准备才能让VRP回到主节点
部署kube-controller-manager(cyou2-201,cyou2-202)
ubuntu@cyou2-201:~$ vi /opt/kubernetes/server/bin/kube-controller-manager.sh
#!/bin/sh
./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 10.4.0.0/16 \
--root-ca-file ./cert/ca.pem \
--v 2
ubuntu@cyou2-201:~$ sudo chmod +x /etc/kubenetes/server/bin/kube-controller-manager.sh
ubuntu@cyou2-201:~$ sudo mkdir -p /data/logs/kubernetes/kube-controller-manager
ubuntu@cyou2-201:~$ vi /etc/supervisor/conf.d/kube-controller-manager.conf
[program:kube-controller-manager]
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=22 ; 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)
stopasgroup=true
user=root ; setuid to this UNIX account to run the program
redirect_stderr=false ; redirect proc stderr to stdout (default false)
stdout_logfile=/data/logs/kubernetes/kube-controller-manager/controll.stdout.log ; stdout 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)
stderr_logfile=/data/logs/kubernetes/kube-controller-manager/controll.stderr.log ; stderr log path, NONE for none; default AUTO
stderr_logfile_maxbytes=64MB ; max # logfile bytes b4 rotation (default 50MB)
stderr_logfile_backups=4 ; # of stderr logfile backups (default 10)
stderr_capture_maxbytes=1MB ; number of bytes in 'capturemode' (default 0)
stderr_events_enabled=false ; emit events on stderr writes (default false)
ubuntu@cyou2-201:~$ sudo supervisorctl update
ubuntu@cyou2-201:~$ sudo supervisorctl status
etcd-server-2-201 RUNNING pid 1641, uptime 58 days, 2:23:33
kube-apiserver RUNNING pid 57962, uptime 1:24:59
kube-controller-manager STARTING
ubuntu@cyou2-201:~$ sudo supervisorctl status
[sudo] password for ubuntu:
etcd-server-2-201 RUNNING pid 1641, uptime 58 days, 2:23:33
kube-apiserver RUNNING pid 57962, uptime 1:24:59
kube-controller-manager RUNNING pid 58100, uptime 1:16:38
部署kube-scheduler集群(cyou2-201,cyou2-202)
其中master都是找本机的apiserver（kube-controller-manager和kube-scheduler找apiserver），可以走http协议，如果需要交叉需要加证书
主控节点的组件都必须在一个节点，如果主节点的三个组件分布在不同的机器上，需要client.pem和client-key.pem
ubuntu@cyou2-201:~$ vi /opt/kubernetes/server/bin/kube-scheduler.sh
#!/bin/sh
./kube-scheduler \
--leader-elect \
--log-dir /data/logs/kubernetes/kube-scheduler \
--master http://127.0.0.1:8080 \
--v 2
ubuntu@cyou2-201:~$ sudo chmod +x /etc/kubernetes/server/bin/kube-scheduler.sh
ubuntu@cyou2-201:~$ sudo mkdir -p /data/logs/kubernetes/kube-scheduler
ubuntu@cyou2-201:~$ sudo vi /etc/supervisor/conf.d/kube-scheduler.conf
[program:kube-scheduler]
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=22 ; 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)
stopasgroup=true
user=root ; setuid to this UNIX account to run the program
redirect_stderr=false ; redirect proc stderr to stdout (default false)
stdout_logfile=/data/logs/kubernetes/kube-scheduler/scheduler.stdout.log ; stdout 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)
stderr_logfile=/data/logs/kubernetes/kube-scheduler/scheduler.stderr.log ; stderr log path, NONE for none; default AUTO
stderr_logfile_maxbytes=64MB ; max # logfile bytes b4 rotation (default 50MB)
stderr_logfile_backups=4 ; # of stderr logfile backups (default 10)
stderr_capture_maxbytes=1MB ; number of bytes in 'capturemode' (default 0)
stderr_events_enabled=false ; emit events on stderr writes (default false)
ubuntu@cyou2-201:~$ sudo ln -s /opt/kubernetes/server/bin/kubectl /usr/bin/kubectl
检查集群健康状态(cluster_status)
ubuntu@cyou2-201:~$ kubectl get cs
NAME STATUS MESSAGE ERROR
etcd-2 Healthy {"health": "true"}
etcd-0 Healthy {"health": "true"}
etcd-1 Healthy {"health": "true"}
scheduler Healthy ok
controller-manager Healthy ok
部署运算节点上的kubelet集群(cyou2-201,cyou2-202)
证书签发kubelet
kubelet对外提供https服务，apiserver需要来询问节点情况，需要签发server证书，需要将可能部署kubelet节点IP写上，新增加的节点可以重新签发一套证书，老节点可以不动，但是这样就有两套不一样的证书(不建议)，需要重新更新证书
ubuntu@cyou2-203:/opt/certs$ sudo vi kubelet-csr.json
{
"CN": "kubelet-node",
"hosts": [
"127.0.0.1",
"192.168.2.200",
"192.168.2.201",
"192.168.2.202",
"192.168.2.203",
"192.168.2.204",
"192.168.2.205",
"192.168.2.206",
"192.168.2.207",
"192.168.2.208",
"192.168.2.209",
"192.168.2.210"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "hunan",
"L": "changsha",
"O": "cyou",
"OU": "ops"
}
]
}
ubuntu@cyou2-203:/opt/certs$ sudo cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=server kubelet-csr.json | sudo cfssljson -bare kubelet
拷贝证书：
ubuntu@cyou2-201:~$ ls -l /opt/kubernetes/server/bin/cert
total 40
-rw------- 1 ubuntu ubuntu 1675 7月 16 20:56 apiserver-key.pem
-rw-r--r-- 1 ubuntu ubuntu 1627 7月 16 20:56 apiserver.pem
-rw------- 1 ubuntu ubuntu 1679 7月 8 21:51 ca-key.pem
-rw-r--r-- 1 ubuntu ubuntu 1359 7月 8 21:50 ca.pem
-rw------- 1 ubuntu ubuntu 1679 7月 8 21:51 client-key.pem
-rw-r--r-- 1 ubuntu ubuntu 1371 7月 8 21:51 client.pem
-rw------- 1 ubuntu ubuntu 1679 7月 16 21:29 kubelet-key.pem
-rw-r--r-- 1 ubuntu ubuntu 1493 7月 16 21:29 kubelet.pem
/opt/kubernetes/server/bin/conf 目录下
创建kubelet.kubeconfig配置文件
1、set-cluster
2、set-credentials
3、set-context
4、use-context
ubuntu@cyou2-201:/opt/kubernetes/server/bin/conf$ sudo kubectl config set-cluster myk8s \
--certificate-authority=/opt/kubernetes/server/bin/cert/ca.pem \
--embed-certs=true \
--server=https://192.168.2.200:7443 \
--kubeconfig=kubelet.kubeconfig
Cluster "myk8s" set.
ubuntu@cyou2-201:/opt/kubernetes/server/bin/conf$ sudo 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 --kubeconfig=kubelet.kubeconfig
User "k8s-node" set.
ubuntu@cyou2-201:/opt/kubernetes/server/bin/conf$ sudo kubectl config set-context myk8s-context \
--cluster=myk8s \
--user=k8s-node \
--kubeconfig=kubelet.kubeconfig
Context "myk8s-context" created.
ubuntu@cyou2-201:/opt/kubernetes/server/bin/conf$ sudo kubectl config use-context myk8s-context --kubeconfig=kubelet.kubeconfig
Switched to context "myk8s-context".
角色绑定：
ubuntu@cyou2-201:/opt/kubernetes/server/bin/conf$ vi /opt/kubernetes/server/bin/conf/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
# 创建集群的一种资源，在存储到etcd中
ubuntu@cyou2-201:/opt/kubernetes/server/bin/conf$ kubectl create -f k8s-node.yaml
clusterrolebinding.rbac.authorization.k8s.io/k8s-node create
检查：
ubuntu@cyou2-201:/opt/kubernetes/server/bin/conf$ kubectl get clusterrolebinding k8s-node -o yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
annotations:
kubectl.kubernetes.io/last-applied-configuration: |
{"apiVersion":"rbac.authorization.k8s.io/v1","kind":"ClusterRoleBinding","metadata":{"annotations":{},"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"}]}
creationTimestamp: "2020-07-09T14:45:20Z"
name: k8s-node
resourceVersion: "19875"
selfLink: /apis/rbac.authorization.k8s.io/v1/clusterrolebindings/k8s-node
uid: e9adf7ea-b299-4bc6-93fd-f3b507493f1a
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: system:node
subjects:
- apiGroup: rbac.authorization.k8s.io
kind: User
name: k8s-node
创建kubelet.kubeconfig配置文件可复制到其余节点
角色绑定，只需要做一次
准备pause镜像，在运维主机上
# docker pull kubenetes/pause
# docker tag kubenetes/pause:latest harbor.cyou.com/public/pause:latest
# docke login harbor.cyou.com
# docker push harbor.cyou.com/k8s/pause:latest
ubuntu@cyou2-201:/opt/kubernetes/server/bin$ vi kubelet-2201.sh
#!/bin/sh
./kubelet \
--anonymous-auth=false \
--cgroup-driver systemd \
--cluster-dns 10.4.0.2 \
--cluster-domain cluster.local \
--runtime-cgroups=/systemd/system.slice --kubelet-cgroups=/systemd/system.slice \
--fail-swap-on="false" \
--client-ca-file ./cert/ca.pem \
--tls-cert-file ./cert/kubelet.pem \
--tls-private-key-file ./cert/kubelet-key.pem \
# 注意做实验时hostname写的IP，写主机名更好
# --hostname-override cyou2-201.host.com \
--hostname-override 192.168.2.201 \
--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.cyou.com/k8s/pause:latest \
--root-dir /data/kubelet
ubuntu@cyou2-201:/opt/kubernetes/server/bin$ sudo chmod +x /opt/kubernetes/server/bin/kubelet-721.sh
ubuntu@cyou2-201:/opt/kubernetes/server/bin$ sudo mkdir -p /data/logs/kubernetes/kube-kubelet /data/kubelet
ubuntu@cyou2-201:/opt/kubernetes/server/bin$ sudo vi /etc/supervisor/conf.d/kube-kubelet.conf
[program:kube-kubelet]
command=/opt/kubernetes/server/bin/kubelet-2201.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=22 ; 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)
stopasgroup=true
user=root ; setuid to this UNIX account to run the program
redirect_stderr=false ; redirect proc stderr to stdout (default false)
stdout_logfile=/data/logs/kubernetes/kube-kubelet/kubelet.stdout.log ; stdout 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)
stderr_logfile=/data/logs/kubernetes/kube-kubelet/kubelet.stderr.log ; stderr log path, NONE for none; default AUTO
stderr_logfile_maxbytes=64MB ; max # logfile bytes b4 rotation (default 50MB)
stderr_logfile_backups=4 ; # of stderr logfile backups (default 10)
stderr_capture_maxbytes=1MB ; number of bytes in 'capturemode' (default 0)
stderr_events_enabled=false ; emit events on stderr writes (default false)
ubuntu@cyou2-201:/opt/kubernetes/server/bin$ sudo supervisorctl update
ubuntu@cyou2-201:/opt/kubernetes/server/bin$ sudo supervisorctl status
etcd-server-2-201 RUNNING pid 1641, uptime 58 days, 2:39:01
kube-apiserver RUNNING pid 57962, uptime 1:40:27
kube-controller-manager RUNNING pid 58100, uptime 1:32:06
kube-kubelet STARTING
ubuntu@cyou2-201:/opt/kubernetes/server/bin$ sudo supervisorctl status
etcd-server-2-201 RUNNING pid 1641, uptime 58 days, 2:39:01
kube-apiserver RUNNING pid 57962, uptime 1:40:27
kube-controller-manager RUNNING pid 58100, uptime 1:32:06
kube-kubelet RUNNING pid 58099, uptime 1:32:06
检查node集群：
ubuntu@cyou2-201:/opt/kubernetes/server/bin$ kubectl get node
NAME STATUS ROLES AGE VERSION
192.168.2.201 Ready <none> 116m v1.15.4
192.168.2.202 Ready <none> 116m v1.15.4
ubuntu@cyou2-201:/opt/kubernetes/server/bin$ kubectl get nodes
NAME STATUS ROLES AGE VERSION
192.168.2.201 Ready <none> 116m v1.15.4
192.168.2.202 Ready <none> 116m v1.15.4
设置ROLES
kubectl label node NAME node-role.kubernetes.io/master=
kubectl label node NAME node-role.kubernetes.io/node=