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  ¾ÆÆÄÄ¡¸¦ ÃÖ´ë ¼º´ÉÀ¸·Î ¿Ã¸®±â À§ÇÑ °¡À̵å (±Û ±èÁø´ö) ÀÛ¼ºÀÏ : 2005/01/08 13:24
 
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    Ãâó : http://hlug.hanyang.ac.kr/
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    ±Û¾´ÀÌ : ±èÁø´ö
    ³¯Â¥ : 2003/10/27

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    1.        httpd.conf
    A.        config ¿¡¼­ ¼º´É¿¡ ´ëÇÑ ¿ä¼Òµé
    i.        KeepAlive Off
    Çѹø connection ÇÏ¸é ¹Ù·Î connectionÀ» ²÷Áö ¾Ê°í À¯Áö¸¦ ÇÏ´Â ±â´ÉÀε¥ Off¸¦ ÇØ¾ß ´õ ¸¹Àº client µéÀÇ request 󸮸¦ ÇÒ ¼ö ÀÖ´Ù. KeepAlive On »óÅÂÀ̸é MaxKeepAliveRequests, KeepAliveTimeOut °ªÀ» ÀûÀýÈ÷ Á¶ÀýÇØ¾ß µÈ´Ù.
    ii.        Timeout 30
    connection ½ÃÁ¡ºÎÅÍ ¿Ï·á µÉ¶§±îÁöÀÇ ÃÖ´ë ½Ã°£°ª ÀÌ´Ù. network ÀÌ»óÀÌ»ó µîÀ¸·Î connection ȯ°æÀÌ ºñÁ¤ÀûÀÎ client connection µéÀÌ ¸¹¾ÆÁö¸é apache child process »õ connetcion 󸮸¦ À§ÇØ °è¼Ó forkÇÏ°Ô µÉ°ÍÀÌ°í serverÀÇ °úºÎÇÏ°¡ »ý±ä´Ù.
    iii.        HostnameLookups Off
    apache ±âº»°ªÀº Off À̸ç On À¸·Î µÇ¾î ÀÖÀ¸¸é connectionÇÏ°í ÀÖ´Â cilent IP ÁÖ¼Ò°¡ ¿ª ÃßÀûµÇ°í ±× Á¤º¸°¡ log fileµî¿¡ ¾²ÀδÙ. ±×·¸±â ¶§¹®¿¡ ¼º´É¿¡ ÁÁÁö ¾Ê´Ù.
    iv.        FollowSymLinks
    Options FollowSymLinks °¡ ¼³Á¤µÇ¾î ÀÖ´Ù¸é symlinks¿¡ ´ëÇÑ º¸¾È°Ë»ç¸¦ ¼öÇàÇÑ´Ù. symlinks¿¡ ´ëÇÑ º¸¾È°Ë»ç¿¡ µû¶ó¼­ ¼º´ÉÀÌ ÁÁÁö ¾Ê°ÔµÇ¸ç ºÒÇÊ¿äÇÑ °æ¿ì¶ó¸é ¼³Á¤ÇÏÁö ¾Ê´Â°Ô ÁÁ´Ù.
    v.        Options SymLinksIfOwnerMatch
    ¼³Á¤µÇ¾î ÀÖ´Ù¸é °¢ directory¸¦ ¸ðµÎ Á¡°ËÇؼ­ °¢°¢ÀÇ lstat system callÀ» ÇÏ°Ô µÇ¹Ç·Î ¼º´ÉÀÌ ÀúÇϵȴÙ.
    vi.        AllowOverride None
    AllowOverride all ·Î ¼³Á¤µÈ°æ¿ì ¸ðµç filename component¿¡ ´ëÇؼ­ .htaccess fileÀ» ¿­°ÔµÈ´Ù. ÀÌ fileÀ» Çѹø´õ ¿­°Ô µÊÀ¸·Î¼­ ¼º´ÉÀÌ ÁÁÁö ¾Ê°Ô µÇ¸ç ÀÌ°ÍÀÌ ÇÊ¿ä¾ø´Â °æ¿ì¶ó¸é AllowOverride None À» »ç¿ëÇØ¾ß µÈ´Ù.
    vii.        Negotiation
    DirectoryIndex index ó·³ wildcard¸¦ »ç¿ë ÇÏ´Â °Í º¸´Ù DirectoryIndex index.cgi index.pl index.shtml index.html ¿Í °°ÀÌ complete list·Î »ç¿ëÇÏ´Â °ÍÀÌ ÁÁ´Ù. complete list ¿¡¼­´Â °¡Àå ¸ÕÀú ¼±ÅõǴ ¼øÀ¸·Î ³ª¿­ÇÏ´Â °ÍÀÌ ÁÁ´Ù.

    viii.        MaxRequestsPerChild 0
    apache child process°¡ memory leak ÀÌ ¾ø°í »ç¿ëÀÚ module ·Î ÀÛ¼ºÇÑ ºÎºÐÀÌ °ß°íÇÏ´Ù°í ÆǴܵǸé 0 (unlimited)·Î ¼³Á¤ÇÏ´Â °ÍÀÌ ÁÁ´Ù.
    ix.        Apache 2.0 Multi-Processing Modules ¿¡ µû¸¥ Process Creation  
    1.        prefork  
    A.        apache 1.3 ÀÇ °è½Â(default) µÈ°ÍÀ̸ç thread ¸¦ Áö¿øÇÏÁö ¾Ê´Â Unix °è¿­À» À§ÇØ ³²°ÜµÐ °ÍÀÌ´Ù.
    B.        MinSpareServers, MaxSpareServers, StartServers Áö½ÃÀÚ¸¦ ÀûÀýÈ÷ Á¶ÀýÇØ¾ß µÈ´Ù.
    C.        MaxClients ¼ö´Â Client connection ÀÌ ³Ê¹« ¸¹´Ù¸é serverÀÇ spec¿¡ µû¶ó ÀûÀýÇÏ°Ô Á¦ÇÑ ÇØ¾ß ÇÑ´Ù.
    2.        worker
    A.        parent ·Î ºÎÅÍ fork µÈ child process´Â °íÁ¤µÈ ¼ýÀÚÀÇ thread ¸¦ °¡Áö°í ÀÖÀ¸¸ç StartServer¿¡ ÁöÁ¤µÈ ¼ýÀÚ ¸¸Å­ child process »ý¼ºÇÑ´Ù.
    B.        ThreadPerChild ¿¡ °íÁ¤µÈ ¼ýÀÚ ¸¸Å­ child process ³» Thread °³¼ö »ý¼º
    C.        StartServer ¡¿ ThreadPerChild ¼ýÀÚ¸¸Å­ÀÇ Thread°¡ Server Start½Ã¿¡ »ý¼ºµÇ°í request¿¡ µû¶ó          MaxClient °ª±îÁö Áõ°¡ ÇÑ´Ù.
    D.        °¢°¢ÀÇ thread µéÀº connectionµéÀÇ listen °ú serve ¸¦ ÇÑ´Ù.
    E.        request °¡ ´Ã¾î³ª¸é parent ´Â child process ¸¦ fork ÇÏ¿© ThreadPerChild¿¡ ÁöÁ¤µÈ ¼ýÀÚ ¸¸Å­ÀÇ thread ¸¦ »ý¼ºÇÑ´Ù. request °¡ ´Ã¾î³ª¸é parent ´Â child process ¸¦ kill ÇÏ¿© child process ³»¿¡ ÀÖ´ø thread¸¦ ÇѲ¨¹ø¿¡ kill ÇÑ´Ù.  MaxSpareThreads, MinSpareThreads Áö½ÃÀÚ »ç¿ëÇÏ¿© ÀûÀýÈ÷ Á¶ÀýÇØ¾ß ÇÑ´Ù
    F.        apache 2.0.35 test °á°ú·Î´Â child process ¸¦ ´ÃÀÌ°í child process ³»¿¡ thread ¼ýÀÚ¸¦ ÁÙÀÌ´Â °ÍÀÌ ´õ ¼º´ÉÀÌ ÁÁ¾Ò´Âµ¥ ÀÌÀ¯´Â thread °£ÀÇ °æÇÕ¹®Á¦°¡ »ý±â´Â °ÍÀ¸·Î ÆǴܵȴÙ.  

    2.        modules

    compile ½Ã Æ÷ÇԵǴ ºÒ ÇÊ¿äÇÑ moduleÀ» ¾ø¾Ö¼­ fork ¹× ºÒÇÊ¿äÇÑ system call ÀÇ ºÎÇϸ¦ ÁÙÀδÙ.
    A.        Core Features and Multi-Processing Modules
    i.        core
    basic server operationÀ» À§Çؼ­ ²À ÇÊ¿äÇÏ´Ù.
    ii.        mpm_common
    multi-processing module (MPM) À» À§ÇÑ common module
    iii.        MPM module ·Î¼­ °¢ OS¿¡ µû¶ó¼­ 1°³¸¸ Æ÷ÇÔ µÇ°Ô µÈ´Ù.
    1.        mpm_netware
    Novell NetWare ¸¦ À§ÇÑ multi-processing module
    2.        mpm_winnt
    Windows NT ¸¦ À§ÇÑ multi-processing module
    3.        perchild
    °¢°¢ÀÇ process µéÀÌ ´Ù¾çÇÑ ´Ù¸¥ userid ¸¦ °¡Áö°í serving À» ÇÒ ¼ö Àִ  multi-processing module ÀÌ¸ç ½ÇÇè ´Ü°è ÀÌ´Ù.
    4.        prefork
    apache 1.3 ÀÇ pre-forking web server ÀÇ °è½ÂµÈ multi-processing module
    5.        worker
    hybrid multi-threaded multi-process web server ¸¦ ±¸ÇöÇÑ multi-processing module
    B.        Other Modules
    i.        mod_access
    , , sections ¹× .htaccess files ¿¡ clinet ÀÇ hostname, ip µéÀ» °¡Áö°í access controlÀ» À§Çؼ­ ÇÊ¿äÇÏ´Ù.
    ii.        mod_actions
    CGI scripts ½ÇÇàÀÌ ÇÊ¿äÇÏ´Ù¸é ÇÊ¿äÇÏ´Ù.
    iii.        mod_alias
    URL redirection À̳ª Alias ScriptAlias À» À§ÇØ ÇÊ¿äÇÏ´Ù.
    iv.        mod_asis
    HTTP header ¿Í ÇÔ²² file ³»¿ëÀ» ±×´ë·Î º¸³¾ ¶§ ¾²ÀδÙ. ºÒ ÇÊ¿ä ÇÏ´Ù.
    v.        Authentication ¿¡ ´ëÇÑ modules
    Authentication ¿¡ ´ëÇÑ ±â´ÉÀÌ ÇÊ¿ä ¾øÀ¸¸é ¸ðµÎ ºÒ ÇÊ¿äÇÏ´Ù.
    1.        mod_auth, mod_auth_dbm
    HTTP basic authentication À¸·Î¼­ ÀÎÁõ¿¡ °üÇÑ Á¤º¸¸¦ text file µî¿¡ ÀúÀå ÇÒ¼ö ÀÖ°í mod_auth_dbm À» ÅëÇؼ­ DBM µî¿¡ ÀúÀåµÉ¼öµµ ÀÖ´Ù. ÀÎÁõ¿¡ °ü·Ã ¾øÀ¸¸é ºÒ ÇÊ¿ä.
    2.        mod_auth_anon
    FTP ½ºÅ¸ÀÏ Ã³·³ "anonymous" user access ¸¦  authenticated areas ¿¡ Á¢±ÙÇÏ°Ô ÇÒ¼ö ÀÖ´Ù.
    3.        mod_auth_digest
    MD5 Digest Authentication Áö¿ø. ÀÎÁõ¿¡ °ü·Ã ¾øÀ¸¸é ºÒÇÊ¿ä ÇÏ´Ù.
    vi.        mod_autoindex
    ls¹× dir ¸í·Éó·³ directory³»ÀÇ fileµéÀ» Á¤·ÄÇؼ­ ³ª¿À°Ô ÇØÁÙ ¶§ ¾²ÀδÙ. ºÒÇÊ¿äÇÏ´Ù.
    vii.        mod_cgi
    CGI scripts ½ÇÇàÀ» À§Çؼ­ ÇÊ¿äÇÏ´Ù.
    viii.        mod_deflate
    content ¾ÐÃà Áö¿ø (Á¤Ã¥»ó content ¾ÐÃàÀ» Çϱ⠶§¹®¿¡ ÇÊ¿ä ÇÒ ¼ö ÀÖ´Ù.)
    ix.        mod_dir
    directory index files À» Áö¿ø ºÒÇÊ¿ä.
    x.        mod_env
    CGI scripts ¿Í SSI pages ¿¡ system ȯ°æ º¯¼ö Á¦°ø ºÒ ÇÊ¿ä.
    xi.        mod_imap
    server ó¸® image mapÀ¸·Î ó¸®Çϱâ À§ÇØ ¾²ÀÌ¸ç ºÒ ÇÊ¿ä.
    xii.        mod_include
    Server Side Includes (SSI) 󸮸¦ À§Çؼ­ ¾²ÀÌ¸ç ºÒ ÇÊ¿ä.
    xiii.        mod_log_config
    Logging À§Çؼ­ ÇÊ¿äÇÏ´Ù.
    xiv.        mod_mime
    content (mime-type, language, character set, encoding)  ¹× fileÀÇ Æ¯¼º¿¡ µû¶ó ƯÁ¤ type À¸·Î ó¸®Çϱâ À§Çؼ­ ²À ÇÊ¿äÇÏ´Ù.
    xv.        mod_negotiation
    content negotiation ¿¡ ÇÊ¿äÇÏ´Ù.
    xvi.        mod_proxy
    HTTP/1.1 proxy ±â´É¿¡ ÇÊ¿ä.
    xvii.        mod_setenvif
    requestÀÇ browser Ư¼º¿¡ µû¸¥ ¼­·Î ´Ù¸¥ script ¸¦ Á¢±ÙÇÏ°Ô Çϰųª ȯ°æ º¯¼ö¸¦ ÁöÁ¤ÇÏ°Ô ÇÒ¼öÀÖ´Ù. BrowserMatch µîÀÇ ÁöÁö»ç¸¦ »ç¿ëÇϱâ À§Çؼ­ ÇÊ¿äÇÏ´Ù.
    xviii.        mod_so
    shared object ÇüÅÂÀÇ µ¿ÀûÀÎ apache modules ÀÌ ÀÖ´Ù¸é ÇÊ¿äÇÏ´Ù.
    xix.        mod_ssl
    Secure Sockets Layer (SSL) ¿Í Transport Layer Security (TLS) protocols À» »ç¿ëÇÑ´Ù¸é ÇÊ¿äÇÏ´Ù.
    xx.        mod_status
    server activity ¹× performance Á¤º¸µéÀ» moniter Çϱâ À§Çؼ­ ÇÊ¿ä.
    xxi.        mod_userdir
    »ç¿ëÀÚ °èÁ¤À» ÀÌ¿ëÇÏ¿© home page ¸¦ Á¦°ø ÇÑ´Ù. ºÒ ÇÊ¿ä ÇÏ´Ù.

    3.        MaxClient ¼ö¸¦ À§ÇÑ source ¼öÁ¤

    A.        apahce 1.3
    apache_1.3.x/src/include/httpd.h ÀÇ ¿¡¼­
    HARD_SERVER_LIMIT 256
    B.        apache 2.0
    i.        prefork
    httpd-2.0.36/server/mpm/prefork/prefork.c
    DEFAULT_SERVER_LIMIT 256
    ii.        worker
    httpd-2.0.36/server/mpm/worker/worker.c
    DEFAULT_SERVER_LIMIT 16
    DEFAULT_THREAD_LIMIT 64




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    ³¯Â¥ : 2003/10/28

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    KeepAlive ¿¡ ´ëÇؼ­ On À» ÇØ¾ß ¼º´ÉÀÌ ´õ ÁÁÀºÁö Off ¸¦ ÇØ¾ß ¼º´ÉÀÌ ´õ ÁÁÀºÁö ³í¶õÀÌ ¸¹½À´Ï´Ù.

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    Slow GET °ø°ÝÀÇ ¿ø¸®´Â ¾ÆÆÄÄ¡¿¡ ¿äûÀ» °É°í Timeout µ¿¾È ¾Æ¹«ÀÏ ÇÏÁö ¾Ê°í ÀÖ´Ù°¡ Timeout¿¡ ÀÇÇØ ÄÁ³Ø¼ÇÀÌ ²÷¾îÁú·Á°í ÇÒ¶§ Á¶±Ý¾¿ ¿äûÀ» º¸³À´Ï´Ù.

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