Docke官方提供了Docker Hub網站來作為一個公開的集中倉庫。然而，本地訪問Docker Hub速度往往很慢，並且很多時候我們需要一個本地的私有倉庫只供網內使用。
Docker倉庫實際上提供兩方面的功能，一個是鏡像管理，一個是認證。前者主要由docker-registry項目來實現，通過http服務來上傳下載；后者可以通過docker-index（閉源）項目或者利用現成認證方案（如nginx）實現http請求管理。
系統環境：CentOS 7.2
主機IP：192.168.116.148
1、安裝docker-registry
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docker run -d -p 5000:5000 --restart=always --name registry -
v
/opt/registry
:
/var/lib/registry
registry:2
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2、上傳鏡像
查看系統已有的鏡像：
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# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
centos latest 8140d0c64310 7 days ago 193MB
registry 2 9d0c4eabab4d 8 days ago 33.2MB
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使用docker tag將centos鏡像打個標記
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# docker tag centos 192.168.116.148:5000/centos
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使用docker push 上傳標記的鏡像
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# docker push 192.168.116.148:5000/centos
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沒有成功，這是因為從docker1.3.2版本開始，使用registry時，必須使用TLS保證其安全。
在/etc/docker/目錄下，創建daemon.json文件。在文件中寫入：
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{
"insecure-registries"
:[
"192.168.116.148:5000"
] }
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然后重啟docker：
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# systemctl restart docker
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重新上傳：
接下來開始配置https
3、配置SSL證書及nginx反向代理docker registry
搭建私有CA，初始化CA環境，在/etc/pki/CA/下建立證書索引數據庫文件index.txt和序列號文件serial，並為證書序列號文件提供初始值。
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# touch /etc/pki/CA/{index.txt,serial}
# echo 01 > /etc/pki/CA/serial
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生成密鑰並保存到/etc/pki/CA/private/cakey.pem
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# (umask 077;openssl genrsa -out /etc/pki/CA/private/cakey.pem 2048)
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生成根證書
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# openssl req -new -x509 -key /etc/pki/CA/private/cakey.pem -out /etc/pki/CA/cacert.pem -days 3650
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需要填寫的信息：
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Country Name (2 letter code) [XX]:CN
State or Province Name (full name) []:China
Locality Name (eg, city) [Default City]:Beijing
Organization Name (eg, company) [Default Company Ltd]:wts
Organizational Unit Name (eg, section) []:sysops
Common Name (eg, your name or your server's
hostname
) []:hub.wts.com
Email Address []:admin@wts.com
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使系統信任根證書
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# cat /etc/pki/CA/cacert.pem >> /etc/pki/tls/certs/ca-bundle.crt
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安裝nginx
安裝過程略，安裝路徑為/app/nginx，需要安裝openssl模塊。
簽發證書
創建ssl目錄用來存放密鑰文件和證書申請文件
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# mkdir /app/nginx/conf/ssl
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創建密鑰文件和證書申請文件
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# (umask 077;openssl genrsa -out /app/nginx/conf/ssl/docker.key 2048)
# openssl req -new -key /app/nginx/conf/ssl/docker.key -out /app/nginx/conf/ssl/docker.csr
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填寫的申請信息前四項要和私有CA的信息一致
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Country Name (2 letter code) [XX]:CN
State or Province Name (full name) []:China
Locality Name (eg, city) [Default City]:Beijing
Organization Name (eg, company) [Default Company Ltd]:wts
Organizational Unit Name (eg, section) []:sysops
Common Name (eg, your name or your server's
hostname
) []:hub.wts.com
Email Address []:admin@wts.com
Please enter the following
'extra'
attributes
to be sent with your certificate request
A challenge password []:
#直接回車
An optional company name []:
#直接回車
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簽署，證書
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# openssl ca -in /app/nginx/conf/ssl/docker.csr -out /app/nginx/conf/ssl/docker.crt -days 3650
Using configuration from
/etc/pki/tls/openssl
.cnf
Check that the request matches the signature
Signature ok
Certificate Details:
Serial Number: 1 (0x1)
Validity
Not Before: May 19 19:03:55 2017 GMT
Not After : May 17 19:03:55 2027 GMT
Subject:
countryName = CN
stateOrProvinceName = Beijing
organizationName = wts
organizationalUnitName = sysops
commonName = hub.wts.com
emailAddress = admin@wts.com
X509v3 extensions:
X509v3 Basic Constraints:
CA:FALSE
Netscape Comment:
OpenSSL Generated Certificate
X509v3 Subject Key Identifier:
69:F0:D7:BF:B2:CE:6D:53:AA:1A:CD:E8:73:47:A7:9F:30:EA:17:F7
X509v3 Authority Key Identifier:
keyid:AF:E5:48:44:A3:18:59:38:D5:17:07:1B:1D:6F:32:F4:EC:1E:E0:E2
Certificate is to be certified
until
May 17 19:03:55 2027 GMT (3650 days)
Sign the certificate? [y
/n
]:y
1 out of 1 certificate requests certified, commit? [y
/n
]y
Write out database with 1 new entries
Data Base Updated
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配置nginx反向代理docker registry
添加認證
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# yum -y install httpd-tools
# htpasswd -cb /app/nginx/conf/docker-registry.htpasswd admin admin
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nginx相關配置：
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upstream docker-registry {
server 127.0.0.1:5000;
}
server {
listen 443;
server_name localhost;
#charset koi8-r;
#access_log logs/host.access.log main;
ssl on;
ssl_certificate
/app/nginx/conf/ssl/docker
.crt;
ssl_certificate_key
/app/nginx/conf/ssl/docker
.key;
client_max_body_size 0;
chunked_transfer_encoding on;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
add_header
'Docker-Distribution-Api-Version'
'registry/2.0'
always;
location / {
auth_basic
"Docker registry"
;
auth_basic_user_file
/app/nginx/conf/docker-registry
.htpasswd;
proxy_pass http:
//docker-registry
;
}
location
/_ping
{
auth_basic off;
proxy_pass http:
//docker-registry
;
}
location
/v2/_ping
{
auth_basic off;
proxy_pass http:
//docker-registry
;
}
}
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重啟nginx
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# /app/nginx/sbin/nginx -s reload
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如果沒有DNS解析內網域名，修改hosts文件
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# cat >>/etc/hosts <<EOF
192.168.116.148 hub.wts.com
EOF
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重啟docker
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# systemctl daemon-reload
# systemctl restart docker
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登錄
上傳鏡像
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# docker pull nginx
# docker tag nginx 192.168.116.148:5000/nginx
# docker push 192.168.116.148:5000/nginx
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查看
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# curl --user admin:admin https://hub.wts.com/v2/_catalog
{
"repositories"
:[
"centos"
,
"nginx"
]}
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局域網內其他機器認證（192.168.116.147 系統版本：CentOS6.5）
修改hosts文件
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# cat >>/etc/hosts <<EOF
192.168.116.148 hub.wts.com
EOF
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把CA的密鑰發送到客戶機，並添加到ca-bundle.crt
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# scp -p /etc/pki/tls/certs/ca-bundle.crt root@192.168.116.147:/etc/pki/tls/certs/ca-bundle.crt
# scp -p /etc/pki/CA/cacert.pem root@192.168.116.147:/etc/pki/CA/cacert.pem
# cat /etc/pki/CA/cacert.pem >> /etc/pki/tls/certs/ca-bundle.crt
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重啟docker
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# /etc/init.d/docker restart
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登錄
下載鏡像
至此，私服基本上可以使用了。
轉載：http://www.cnblogs.com/Eivll0m/p/7089675.html
借鑒：https://www.cnblogs.com/kevingrace/p/6628062.html