CentOS测试yum update.

我有一台centos7 1611 的机器 想着升级一下 简单进行测试

1. 操作系统的信息为:

[root@CentOS1611 yum.repos.d]# uname -a
Linux CentOS1611 3.10.0-514.el7.x86_64 #1 SMP Tue Nov 22 16:42:41 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
[root@CentOS1611 yum.repos.d]# cat /etc/redhat-release
CentOS Linux release 7.3.1611 (Core)
[root@CentOS1611 yum.repos.d]# 

2. 备份 yum的包源

cd /etc/yum.repos.d/
mkdir back
mv * back

3. 设置阿里的包源

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

4. 创建cache

yum makecache

5. 执行升级

yum update -y

升级的包源会很多

6. 执行升级完重启之后的效果为:

[root@CentOS1611 ~]# cat /etc/redhat-release
CentOS Linux release 7.7.1908 (Core)
[root@CentOS1611 ~]# uname -a
Linux CentOS1611 3.10.0-1062.18.1.el7.x86_64 #1 SMP Tue Mar 17 23:49:17 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
[root@CentOS1611 ~]# 

7. 统计了一下时间. 大概耗时 80分钟 下载加安装加重启 速度其实还是挺快的.