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HomeDatabaseMysql Tutorial2014/07/02 网站系统升级_MySQL

我刚把这台服务器的操作系统从Red Hat Enterprise 5.6升级到Red Hat Enterprise 6.0。

目前我感受到的操作系统的变化如下:

  1.  不再支持32位。虽然依然可以用虚拟机运行32位,但是AWS不支持这个了。AWS中运行它的方式也从半虚拟化变成了HVM。
  2.  apache从2.2升级到2.4。但是因为mod_spdy一直不支持apache 2.4,所以本站就只好暂时放弃spdy了。
  3.  用systemd替换了SysV 和 Upstart 。所以不要用service xxx start了,换成systemd start xxx。另外,journalctl 我也非常用不习惯,每次都要加上—no-pager。
  4.  官方源中MySQL被换成了MariaDB 5.5。不过没关系,大不了自己手动从dev.mysql.com下载rpm。
  5. kernel升级到了3.10。

另外,十分感谢AWS提供了t2.micro这种新型的micro实例来替代之前的t1.micro。速度差别十分十分显著。

我感觉这两种虚拟机主要的差别有以下几点:

  1.  cpu的调配划分上
  2. 硬盘从EBS only变成了SSD(鸟枪变火箭炮啊!)
  3. 内存从600MB升级到了1GB

昨天我还试用了一下Google Compute Engine,因为它的服务器在台湾,从国内访问连通性很差,作罢。

稍等,我再试一试azure。

This article is from:https://www.sunchangming.com/blog/post/4630.html

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