Web servers rarely occur singly. They tend to run in packs. If you're a typical Webmaster, you're not responsible for just one server, but for a whole herd. It's easy enough to manage one or two servers, but when there are a half-dozen or more, you really need some sort of central server-management tool to keep track of what's going on and alert you to problems. Ideally, such a tool would run at regular intervals, contacting each of the servers under your care, logging the results, and alerting you if it detects that a server is no longer responding to requests. There are a variety of commercial tools for this purpose. The ones that readers of this column most often recommend include WebTrends Log Analyzer, which uses FTP and server-side scripts to collect server performance statistics from log files, and WindDance Networks Web Challenger, which uses packet sniffing to pull its information directly off the local area network.
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机译：Web服务器很少单独出现。他们倾向于成群结队地奔跑。如果您是典型的网站站长，则您不仅要负责一台服务器，还要负责整个服务器。管理一台或两台服务器非常容易，但是当有六个或更多服务器时，您确实需要某种中央服务器管理工具来跟踪正在发生的事情并向您发出警报。理想情况下，该工具应定期运行，与您所关心的每台服务器联系，记录结果，并在检测到服务器不再响应请求时向您发出警报。有许多用于此目的的商业工具。本专栏读者最常推荐的工具包括：WebTrends Log Analyzer，它使用FTP和服务器端脚本从日志文件中收集服务器性能统计信息； WindDance Networks Web Challenger，它使用数据包嗅探直接从本地获取信息。区域网络。
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