本文實例講述了CentOS7.2服務器上搭建Docker私有鏡像倉庫操作。分享給大家供大家參考，具體如下：
鑒于國內pull鏡像的速度較慢，很有必要搭建docker私有或者本地鏡像倉庫。
安裝docker
# yum -y install docker # systemctl start docker && systemctl enable docker
使用自簽名進行安全認證
創(chuàng)建存放證書和密鑰的certs目錄
# mkdir -p /docker/certs # chcon -Rt svirt_sandbox_file_t /docker/certs/
修改/etc/pki/tls/openssl.cnf配置文件
在該文件的[ v3_ca ]配置項中添加鏡像倉庫IP地址：
[ v3_ca ] # Extensions for a typical CA subjectAltName = IP:192.168.120.128
生成證書和密鑰
# cd /docker && openssl req \ -newkey rsa:4096 -nodes -sha256 -keyout certs/domain.key \ -x509 -days 365 -out certs/domain.crt # mkdir -p /etc/docker/certs.d/192.168.120.128:5000/ # cp certs/domain.crt /etc/docker/certs.d/192.168.120.128\:5000/ca.crt
創(chuàng)建存放鏡像文件的后端存儲
# mkdir -p /docker/data/private_registry # chcon -Rt svirt_sandbox_file_t /docker/data/private_registry
重新啟動docker daemon
# systemctl restart docker
啟動私有鏡像倉庫
# docker run \ -d \ --name private_registry --restart=always \ -u root \ -p 5000:5000 \ -v /docker/data/private_registry:/var/lib/registry \ -v /docker/certs:/certs \ -e REGISTRY_HTTP_TLS_CERTIFICATE=/certs/domain.crt \ -e REGISTRY_HTTP_TLS_KEY=/certs/domain.key \ registry:2
Docker加速器
該加速器可在pull鏡像較慢時配置實用。
測試
本地測試
# docker pull ubuntu # docker tag ubuntu 192.168.120.128:5000/ubuntu # docker pull 192.168.120.128:5000/ubuntu Using default tag: latest Trying to pull repository 192.168.120.128:5000/ubuntu ... latest: Pulling from 192.168.120.128:5000/ubuntu Digest: sha256:382452f82a8bbd34443b2c727650af46aced0f94a44463c62a9848133ecb1aa8
遠程測試
在另一臺主機上執(zhí)行以下命令進行測試：
# mkdir -p /etc/docker/certs.d/192.168.120.128:5000/ # scp 192.168.120.128:/etc/docker/certs.d/192.168.120.128\:5000/ca.crt /etc/docker/certs.d/192.168.120.128\:5000/ # systemctl restart docker # docker pull 192.168.120.128:5000/ubuntu Using default tag: latest Trying to pull repository 192.168.120.128:5000/ubuntu ... latest: Pulling from 192.168.120.128:5000/ubuntu b6f892c0043b: Pull complete 55010f332b04: Pull complete 2955fb827c94: Pull complete 3deef3fcbd30: Pull complete cf9722e506aa: Pull complete Digest: sha256:382452f82a8bbd34443b2c727650af46aced0f94a44463c62a9848133ecb1aa8
希望本文所述對大家Docker容器使用有所幫助。
