我对 YUM Update 的安装和升级消息之间的区别存在疑问。
我有 2 台服务器，分别安装了 MySQL 5.6.25“服务器 A”和“服务器 B”。
当我运行命令时：
YUM update
我在服务器 A 上获得安装包选项：
Dependencies Resolved
================================================================================
Package Arch Version Repository Size
================================================================================
Installing:
mysql-community-client x86_64 5.6.28-2.el6 mysql56-community 18 M
replacing MySQL-client.x86_64 5.6.25-1.linux_glibc2.5
mysql-community-devel x86_64 5.6.28-2.el6 mysql56-community 3.3 M
replacing MySQL-devel.x86_64 5.6.25-1.linux_glibc2.5
mysql-community-libs x86_64 5.6.28-2.el6 mysql56-community 1.9 M
replacing MySQL-shared.x86_64 5.6.25-1.linux_glibc2.5
mysql-community-server x86_64 5.6.28-2.el6 mysql56-community 53 M
replacing MySQL-server.x86_64 5.6.25-1.linux_glibc2.5
Installing for dependencies:
mysql-community-common x86_64 5.6.28-2.el6 mysql56-community 307 k
Transaction Summary
================================================================================
Install 5 Package(s)
Total download size: 76 M
Is this ok [y/N]:
在服务器 B 中升级包选项：
Dependencies Resolved
================================================================================
Package Arch Version Repository Size
================================================================================
Updating:
mysql-community-server x86_64 5.6.28-2.el6 mysql56-community 53 M
Updating for dependencies:
mysql-community-client x86_64 5.6.28-2.el6 mysql56-community 18 M
mysql-community-common x86_64 5.6.28-2.el6 mysql56-community 307 k
mysql-community-libs x86_64 5.6.28-2.el6 mysql56-community 1.9 M
mysql-community-libs-compat x86_64 5.6.28-2.el6 mysql56-community 1.6 M
Transaction Summary
================================================================================
Upgrade 5 Package(s)
Total download size: 75 M
Is this ok [y/N]:
有什么不同？
答案1
我们需要查看完整的 yum 输出才能确定。服务器 A 和服务器 B 可能一开始就安装了不同的软件包。服务器 A 中的软件包使用的名称已被替换为新名称，而服务器 B 中的软件包与当前名称匹配。