为了避免参数都在命令行中导致太长，或者不能玩一些高级配置；可以使用inets的配置文件，OTP项目已经有各种配置文件的例子：
[root@whyang ~]# cd otp_src_17.5/lib/inets/ [root@whyang inets]# find . -type f -name *.config ./test/inets.config ./src/inets_app/inets.config [root@whyang inets]# find . -type f -name *.conf ./examples/server_root/conf/8888.conf ./examples/server_root/conf/ssl.conf ./examples/server_root/conf/httpd.conf ./examples/server_root/conf/8080.conf ./test/ftp_SUITE_data/vsftpd.conf ./test/httpd_test_data/server_root/conf/8888.conf ./test/httpd_test_data/server_root/conf/ssl.conf ./test/httpd_test_data/server_root/conf/httpd.conf ./test/httpd_test_data/server_root/conf/8080.conf ./test/httpc_proxy_SUITE_data/apache2/apache2.conf ./test/property_test/ftp_simple_client_server_data/vsftpd.conf ./test/old_httpd_SUITE_data/server_root/conf/8888.conf ./test/old_httpd_SUITE_data/server_root/conf/ssl.conf ./test/old_httpd_SUITE_data/server_root/conf/httpd.conf ./test/old_httpd_SUITE_data/server_root/conf/8080.conf [root@whyang inets]#
比如inets APP级配置文件inet_test.config，内容大约如下：
[root@whyang inets]# cat ./test/inets.config [{inets,[{services,[{httpd,"/ldisk/tests/bmk/inets/priv_dir/8099.conf"}]}]}]. [root@whyang inets]# cat ./src/inets_app/inets.config [{inets,[{services,[{httpd,"/var/tmp/server_root/conf/8888.conf"}, {httpd,"/var/tmp/server_root/conf/8080.conf"}]}]}]. [root@whyang inets]#
我这里inets APP级配置文件内如下：
[root@whyang ~]# cat inets_httpd18880.config [{inets,[{services,[{httpd,"/root/inetsConf/18880.conf"}]}]}]. [root@whyang ~]#
而模块级配置文件，如8888.conf，https.conf等等，我这里模块httpd的配置文件如下：
[root@whyang ~]# cat inetsConf/18880.conf Port 18880 ServerName whyang.yang.net SocketType ip_comm Modules mod_alias mod_auth mod_esi mod_actions mod_cgi mod_include mod_dir mod_get mod_head mod_log mod_disk_log ServerAdmin andypeker@163.com ServerRoot . server_tokens full log_format common ErrorLog /var/log/inets/error_log_18880 TransferLog /var/log/inets/access_log_18880 SecurityLog /var/log/inets/security_log_18880 ErrorDiskLog /var/log/inets/error_disk_log_18880 ErrorDiskLogSize 200000 10 TransferDiskLog /var/log/inets/access_disk_log_18880 TransferDiskLogSize 200000 10 SecurityDiskLog /var/log/inets/security_disk_log SecurityDiskLogSize 200000 10 MaxClients 50 #KeepAlive 5 #KeepAliveTimeout 10 DocumentRoot /var/www/html DirectoryIndex main.html index.html DefaultType text/plain Alias /icons/ /var/www/html/icons/ Alias /pics/ /var/www/html/icons/ ScriptAlias /cgi-bin/ /var/www/html/cgi-bin/ ScriptAlias /htbin/ /var/www/html/cgi-bin/ ErlScriptAlias /cgi-bin/erl httpd_example io EvalScriptAlias /eval httpd_example io #Script HEAD /cgi-bin/printenv.sh #Action image/gif /cgi-bin/printenv.sh <Directory /var/www/html> AuthDBType plain AuthName Open Area AuthUserFile /root/inetsConf/auth/passwd AuthGroupFile /root/inetsConf/auth/group require user franklin require group groupf groupm </Directory> [root@whyang ~]#
注意到其中还有auth的配置...
配置文件齐了，启动：
[root@whyang ~]# erl -config inets_httpd18880.config Erlang/OTP 17 [erts-6.4] [source] [64-bit] [async-threads:10] [hipe] [kernel-poll:false] Eshell V6.4 (abort with ^G) 1>
上面只是加载了配置文件，接下来启动APP inets：
1> application:start(inets).
ok
2>
查看一下APP状态：
2> application:loaded_applications(). [{kernel,"ERTS CXC 138 10","3.2"}, {stdlib,"ERTS CXC 138 10","2.4"}, {inets,"INETS CXC 138 49","5.10.6"}] 3>
有个问题需要注意，httpd模块配置文件中，server_tokens和log_format字段是无效的（经过验证），而且配置文件例子中（比如httpd.conf）中没有server_tokens和log_format字段。
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