1. 如何安装 Epel源到 RHEL/CentOS 7/6/5?
RHEL/CentOS 7rpm -ivh http://mirrors.ustc.edu.cn/epel/7/x86_64/Packages/e/epel-release-7-11.noarch.rpmRHEL/CentOS 6 ## RHEL/CentOS 6 # wget http://dl.fedoraproject.org/pub/epel/epel-release-latest-6.noarch.rpm# rpm -ivh epel-release-6.noarch.rpm如何检查epel是否安装成功？使用一下命令：# yum repolist [root@17-150 ~]# yum repolist 已加载插件：fastestmirrorbase | 3.6 kB 00:00:00 epel/x86_64/metalink | 5.6 kB 00:00:00 epel | 4.3 kB 00:00:00 extras | 3.4 kB 00:00:00 updates | 3.4 kB 00:00:00 (1/5): extras/7/x86_64/primary_db | 191 kB 00:00:00 (2/5): epel/x86_64/group_gz | 170 kB 00:00:00 (3/5): epel/x86_64/updateinfo | 807 kB 00:00:01 (4/5): updates/7/x86_64/primary_db | 7.8 MB 00:00:04 (5/5): epel/x86_64/primary_db | 4.7 MB 00:01:05 Determining fastest mirrors* base: centos.ustc.edu.cn* epel: mirrors.ustc.edu.cn* extras: mirrors.sohu.com* updates: mirrors.sohu.com源标识 源名称 状态base/7/x86_64 CentOS-7 - Base 9,363epel/x86_64 Extra Packages for Enterprise Linux 7 - x86_64 11,769extras/7/x86_64 CentOS-7 - Extras 449updates/7/x86_64 CentOS-7 - Updates 2,146repolist: 23,727
2. 安装docker-io
yum -y install docker-io yum install docker-engine
3. 启动docker服务
/etc/init.d/docker start Starting cgconfig service: [ OK ] Starting docker: [ OK ] chkconfig docker on #设置docker服务开机启动
yum install -y bash-completionsh /usr/share/bash-completion/bash_completion 或者执行 source /usr/share/bash-completion/completions/docker
显然，该脚本是用于bash自动补全的，但是，不幸的是，直接 source 执行该脚本后，docker命令后敲tab，有如下错误：
docker -bash: _get_comp_words_by_ref: command not found -bash: [: 1: unary operator expected -bash: [: 1: unary operator expected -bash: [: -eq: unary operator expected -bash: _get_comp_words_by_ref: command not found -bash: [: 1: unary operator expected -bash: [: 1: unary operator expected -bash: [: -eq: unary operator expected
难道docker的bash自动补全还能有问题？
解决办法如下：
我这里虽然安装了bash-completion ，但是没有执行其中的一个文件： /usr/share/bash-completion/bash_completion 该文件中有上面缺少的命令，执行该文件，重新开一个shell终端 就解决了。 5. 如何使用docker加速器 安装／升级你的Docker客户端 推荐安装1.10.0以上版本的Docker客户端。 您可以通过阿里云的镜像仓库下载：docker-engine、docker-ce 或执行以下命令：curl -sSL http://acs-public-mirror.oss-cn-hangzhou.aliyuncs.com/docker-engine/internet | sh -
针对Docker客户端版本大于1.10的用户
您可以通过修改daemon配置文件/etc/docker/daemon.json来使用加速器：
sudo mkdir -p /etc/dockersudo tee /etc/docker/daemon.json <<-'EOF'{"registry-mirrors": ["https://sv1txjq6.mirror.aliyuncs.com"]}EOFsudo systemctl daemon-reloadsudo systemctl restart docker 6. 阿里云镜像站
http://mirrors.aliyun.com/