Linux系统上如何同时部署两个gitbook服务

gitbook启动的web 服务默认监听4000端口，而重启监控进程默认监听35729端口。一般这样可以启动一个电子书web服务:

gitbook serve /somepath/your_docuemtn_dir/

本地就可以这样来访问:  http://localhost:4000 。

如果要启动另一部电子书服务的话， 就需要同时修改web端口和监控进程端口， 类似这样:

gitbook serve --lrport 35288 --port 4001 /path2/your_another_doc_dir/

否则会报如下错误:

You already have a server listening on 35729
You should stop it and try again.

或者如下错误:

Starting server ...

events.js:72
        throw er; // Unhandled 'error' event
              ^
Error: listen EADDRINUSE
    at errnoException (net.js:905:11)
    at Server._listen2 (net.js:1043:14)
    at listen (net.js:1065:10)
    at Server.listen (net.js:1139:5)
    at /root/.gitbook/versions/2.6.7/lib/utils/server.js:81:22
    at _fulfilled (/root/.gitbook/versions/2.6.7/node_modules/q/q.js:787:54)
    at self.promiseDispatch.done (/root/.gitbook/versions/2.6.7/node_modules/q/q.js:816:30)
    at Promise.promise.promiseDispatch (/root/.gitbook/versions/2.6.7/node_modules/q/q.js:749:13)
    at /root/.gitbook/versions/2.6.7/node_modules/q/q.js:810:14
    at flush (/root/.gitbook/versions/2.6.7/node_modules/q/q.js:108:17)

最后, 贴上gitbook的官方用法说明:

$ gitbook help

  build [book] [output]      build a book
    --format      Format to build to (Default is website; Values are website, json, ebook)
    --log      Minimum log level to display (Default is info; Values are debug, info, warn, error, disabled)

  pdf [book] [output]      build a book to pdf
    --log      Minimum log level to display (Default is info; Values are debug, info, warn, error, disabled)

  epub [book] [output]      build a book to epub
    --log      Minimum log level to display (Default is info; Values are debug, info, warn, error, disabled)

  mobi [book] [output]      build a book to mobi
    --log      Minimum log level to display (Default is info; Values are debug, info, warn, error, disabled)

  serve [book]      Build then serve a gitbook from a directory
    --port      Port for server to listen on (Default is 4000)
    --lrport      Port for livereload server to listen on (Default is 35729)
    --watch      Enable/disable file watcher (Default is true)
    --format      Format to build to (Default is website; Values are website, json, ebook)
    --log      Minimum log level to display (Default is info; Values are debug, info, warn, error, disabled)

  install [book]      install plugins dependencies

  init [directory]      create files and folders based on contents of SUMMARY.md