【Kubernetes社区之路】Bazel安装

建议跟据官方指导文档（https://docs.bazel.build/install.html）进行安装Bazel。像其余开源工具同样，Bazel官方文档介绍了如何在各类操做系统上安装，也有从源码安装的详细指导。

在CentOS 7上安装

Bazel开发团队并无提供针对Fedora和CentOS的官方包，是Redhat公司一位名叫Vincent Batts的工程师维护的。

下载yum源配置文件

使用wget命令下载yum源配置文件：

[root@ecs-d8b6 ~]# wget https://copr.fedorainfracloud.org/coprs/vbatts/bazel/repo/epel-7/vbatts-bazel-epel-7.rep
--2019-06-28 20:16:02--  https://copr.fedorainfracloud.org/coprs/vbatts/bazel/repo/epel-7/vbatts-bazel-epel-7.rep
Resolving copr.fedorainfracloud.org (copr.fedorainfracloud.org)... 209.132.184.54
Connecting to copr.fedorainfracloud.org (copr.fedorainfracloud.org)|209.132.184.54|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 314 [text/plain]
Saving to: ‘vbatts-bazel-epel-7.rep’

100%[==================================================================================>] 314         --.-K/s   in 0s      

2019-06-28 20:16:03 (83.7 MB/s) - ‘vbatts-bazel-epel-7.rep’ saved [314/314]

[root@ecs-d8b6 ~]#

下载完的文件存放在当前目录下的vbatts-bazel-epel-7.rep文件中，你也能够不用wget下载而手动建立他，文件内容以下：

[root@ecs-d8b6 ~]# cat vbatts-bazel-epel-7.rep 
[vbatts-bazel]
name=Copr repo for bazel owned by vbatts
baseurl=https://copr-be.cloud.fedoraproject.org/results/vbatts/bazel/epel-7-$basearch/
type=rpm-md
skip_if_unavailable=True
gpgcheck=1
gpgkey=https://copr-be.cloud.fedoraproject.org/results/vbatts/bazel/pubkey.gpg
repo_gpgcheck=0
enabled=1
enabled_metadata=1

接下来将下载的vbatts-bazel-epel-7.rep文件拷贝到yum仓库配置目录/etc/yum.repos.d/:

[root@ecs-d8b6 ~]# mv vbatts-bazel-epel-7.rep /etc/yum.repos.d/

使用yum安装

首先使用yum list bazel命令来查看上一步新加的yum配置文件是否已经生效：

[root@ecs-d8b6 ~]# yum list bazel
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirror.nus.edu.sg
 * epel: mirrors.aliyun.com
 * extras: mirror.nus.edu.sg
 * updates: mirror.nus.edu.sg
Available Packages
bazel.x86_64                                            0.27.0-7.el7                                            vbatts-bazel

能够看到，已经有一个0.27版本的能够安装了。

使用yum install bazel命令来安装：

[root@ecs-d8b6 ~]# yum install bazel

安装过程当中分提示安装所需的依赖包，按操做提示便可完成安装。

安装完成后，bazel会自动存放在/usr/bin/目录下：

[root@ecs-d8b6 ~]# which bazel
/usr/bin/bazel