Linux Kernel Networking
Linux Kernel Networking takes you on a guided in-depth tour of the current Linux networking implementation and the theory behind it. Linux kernel networking is a complex topic, so the book won't burden you with topics not directly related to networking. This book will also not overload you with cumbersome line-by-line code walkthroughs not directly related to what you're searching for; you'll find
How TCP backlog works in Linux
When an application puts a socket into LISTEN state using the listen syscall, it needs to specify a backlog for that socket. The backlog is usually described as the limit for the queue of incoming connections. Because of the 3-way handshake used by TCP, an incoming connection goes through an intermediate state SYN RECEIVED before it reaches the ESTABLISHED state and can be returned by the accept s
Stray Penguin - Linux Memo (PXE Install)
RedHat Enterprise Linux (RHEL) ã‚„ Fedora Core ã‚’ã€CDを使ã‚ãšãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ãƒ–ートã§ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã™ã‚‹æ–¹æ³•ã€‚ã“ã‚Œã¾ã§ã¯ dhcpd, pxe, tftpd, httpd を個別ã«è¨å®šã™ã‚‹å¿…è¦ãŒã‚ã£ãŸãŒã€ Cobbler (コブラー ※) ã¨ã„ã†ãƒ¦ãƒ¼ãƒ†ã‚£ãƒªãƒ†ã‚£ãƒ‘ッケージãŒç¾ã‚Œã¦ã€ã‹ãªã‚Šç°¡å˜ã«é…布サーãƒã‚’構築ã§ãるよã†ã«ãªã£ãŸã€‚ãªãŠã€Cobbler ã«ã¯ã€Yum ã‚„ Up2date 用ã®ãƒãƒ¼ã‚«ãƒ«ãƒ¬ãƒã‚¸ãƒˆãƒªã‚’作æˆ/æ›´æ–°ã™ã‚‹æ©Ÿèƒ½ã‚„ã€ãƒ‡ã‚£ã‚¹ã‚¯ãƒ¬ã‚¹ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã®ã‚¤ãƒ¡ãƒ¼ã‚¸ã‚µãƒ¼ãƒã‚’構築ã™ã‚‹æ©Ÿèƒ½ã‚‚ã‚る。ã“ã“ã§ã‚‚ã€ãã®ç‰‡é±—ã¨ã—ã¦ã€ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã‚’レスã‚ューモードã§ç«‹ã¡ä¸Šã’ã‚‹ãŸã‚ã®è¨å®šã‚‚網羅ã™ã‚‹ã€‚ PXEブートã®ä»•çµ„ã¿ã«ã¤ã„ã¦ã¯ã©ã‚“ã©ã‚“他力ã«é ¼ã£ã¦ã—ã¾ã†ï¼› PXEを使ã£ã¦PCもディスクレスã«ã—よã†ï¼ 謎ã®å‡¦ç†ç³» SunOS 4.1.4 ※ `cobbler' ã¯ã‚ã®é ã®å¹³ãŸã„
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ボンディング
図1　ボンディングã®æ¦‚念図。複数ã®ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ãƒ»ã‚¤ãƒ³ã‚¿ãƒ•ã‚§ãƒ¼ã‚¹ãƒ»ã‚«ãƒ¼ãƒ‰ï¼ˆNIC）をæ載ã—，ãれらã®NICを一ã¤ã®ä»®æƒ³çš„ãªNICã¨ã—ã¦æ‰±ã„ã¾ã™ã€‚ 1å°ã®ãƒžã‚·ãƒ³ã«è¤‡æ•°ã®ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ãƒ»ã‚¤ãƒ³ã‚¿ãƒ•ã‚§ãƒ¼ã‚¹ãƒ»ã‚«ãƒ¼ãƒ‰ï¼ˆNIC）をæ載ã—，ãれらã®NICを一ã¤ã®ä»®æƒ³çš„ãªNICã¨ã—ã¦æ‰±ã†ãŸã‚ã®æŠ€è¡“ã§ã™ï¼ˆå›³1）。「ãƒãƒ¼ãƒŸãƒ³ã‚°ã€ï¼ˆTeaming）ã¨ã‚‚呼ã°ã‚Œã¾ã™ã€‚ ボンディングã¯ï¼Œãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã®è² è·ã‚’分散ã•ã›ãŸã‚Šï¼Œã‚¹ãƒ«ãƒ¼ãƒ—ãƒƒãƒˆã‚„ä¿¡é ¼æ€§ã‚’å‘上ã•ã›ãŸã‚Šã™ã‚‹å ´åˆã«ç”¨ã„られã¾ã™ã€‚例ãˆã°ï¼Œãƒœãƒ³ãƒ‡ã‚£ãƒ³ã‚°ã«ã‚ˆã‚Š2ã¤ã®NICã§é€šä¿¡ã™ã‚Œã°ï¼Œ1ã¤ã®NICã§é€šä¿¡ã™ã‚‹ã‚ˆã‚Šã‚‚ç†è«–上2å€ã®ãƒ‡ãƒ¼ã‚¿ã‚’é€å—ä¿¡ã§ãã¾ã™ã€‚ã¾ãŸï¼Œè¤‡æ•°ã®NICã§å¤šé‡åŒ–ã™ã‚Œã°ï¼Œãã®ã†ã¡ã®1ã¤ã®NICã«éšœå®³ãŒç™ºç”Ÿã—ãŸå ´åˆã§ã‚‚æ£å¸¸ãªNICã«ã‚ˆã‚Šé€šä¿¡ã‚’継続ã§ãã¾ã™ã€‚ ã“ã®ãƒœãƒ³ãƒ‡ã‚£ãƒ³ã‚°ã‚’実ç¾ã™ã‚‹æ©Ÿèƒ½ã¯ï¼ŒLinuxカーãƒãƒ«ã®æ¨™æº–ドライãƒï¼ˆãƒœãƒ³ãƒ‡ã‚£ãƒ³ã‚°ãƒ»ãƒ‰ãƒ©ã‚¤ãƒï¼‰ã¨ã—ã¦å®Ÿè£…ã•ã‚Œã¦ã„ã¾ã™ã€‚
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Munin Monitoring
What is Munin? Munin is a networked resource monitoring tool that can help analyze resource trends and "what just happened to kill our performance?" problems. It is designed to be very plug and play. A default installation provides a lot of graphs with almost no work. In Norse mythology Hugin and Munin are the ravens of the god king Odin. They flew all over Midgard for him, seeing and remembering,
Networking - KVM
Configuring Guest Networking Guest (VM) networking in kvm is the same as in qemu, so it is possible to refer to other documentation about networking in qemu. This page will try to explain how to configure the most frequent types of networking needed. User Networking Use case: You want a simple way for your virtual machine to access to the host, to the internet or to resources available on your loc
Infrastructure/Fedorahosted-retirement - Fedora Project Wiki
This page was last edited on 24 February 2021, at 21:09. fedorahosted.org retirement Summary fedorahosted.org was retired on March 1st, 2017. If you are viewing this page, odds are it's after that date and you have been redirected here by attempting to go to some project on fedorahosted.org. If you are a user of a project formerly hosted at fedorahosted.org, please search for the new home the proj
sshfs has moved
This page has moved to http://github.com/libfuse/sshfs.
Unix Programming Frequently Asked Questions 日本語訳 - 2 一般ファイルæ“作 (パイプã¨ã‚½ã‚±ãƒƒãƒˆã‚’å«ã‚€)
Sockets FAQã‚‚å‚ç…§ã—ã¦ä¸‹ã•ã„。次ã®ã¨ã“ã‚ã«ã‚ã‚Šã¾ã™: http://www.lcg.org/sock-faq/ 訳注: 日本語訳ã¯æ¬¡ã®ã¨ã“ã‚ã«ã‚ã‚Šã¾ã™: http://www.kt.rim.or.jp/~ksk/sock-faq/indexj.html 2.1 複数ã®ã‚³ãƒã‚¯ã‚·ãƒ§ãƒ³ã‚’扱ã†ã«ã¯ã©ã†ã™ã‚Œã°ã„ã„ã§ã™ã‹? 複数㮠(ファイルディスクリプタ/接続/ストリーム)ã‚’åŒæ™‚ã«ç›£è¦–ã—ãªã‘ã‚Œã°ãªã‚Šã¾ã›ã‚“。 ã“れら全ã¦ã‚’扱ã†ã«ã¯ã©ã†ã™ã‚Œã°ã„ã„ã§ã™ã‹? select()ã‚„poll()を使ã„ã¾ã™ã€‚ 注æ„: select()ã¯BSDã§å°Žå…¥ã•ã‚Œã€poll()ã¯SysV STREAMSã‹ã‚‰ç”Ÿã¾ã‚Œã¾ã—ãŸã€‚ ã§ã™ã‹ã‚‰äº’æ›æ€§ã®å•é¡ŒãŒã‚ã‚Šã¾ã™ã€‚純粋ãªBSDシステムã¯ä»Šã poll()ã‚’å‚™ãˆã¦ã„ ãªã„ã‹ã‚‚知れã¾ã›ã‚“ã—ã€å¤ã„SVR3システムã¯select()ã‚’æŒã£ã¦ã„ãªã„ã“ã¨ã‚‚ã‚ã‚‹ ã§ã—ょã†ã€‚SVR4ã§ã¯sele
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