如果说有什么是在服务器部署过程中最重要然而却最容易被忽视的地方,恐怕就只有系统时间了。这玩意看来简单,但实际上大多数系统服务都直接或间接依赖于它,一台时钟不准确的服务器给出的任何结果都有可能是不可信的。所以在近几年的操作系统发行版中,都不约而同的加入了网络校时的功能。然而对于大多数sysadmin来说,这方面还是最容易忽略的。因此这里提倡,无论是在多么无关紧要的系统部署项目中,服务器上线后的第一件事情,一定不要忘记设定一个稳定的事件源并保证持续可靠的校时。
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