Linux containers in a few lines of code
This post is meant to be a counterpart to the previous KVM post, but about containers instead. The idea is to show how exactly containers work by running a busybox Docker image in our own small container runner. Unlike a VM, container is very vague term. Normally, we call containers a self-contained bundle of code and its dependencies, that can be shipped together and run in an isolated environmen
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Experimenting with Rootless Docker
Cross-posted on Docker Engineering blog Docker engine provides lots of great functionality that is often tightly integrated to the features of the Linux kernel. For example, a component of container isolation is based on Linux namespaces. To create namespaces in Linux you need privileged capabilities. Same is true for mounting filesystems that is the basis of Docker’s storage model. Therefore hist
パブリッククラウドやDocker Hubã«æœ€é©åŒ–ã—ãŸã€ŒMinimal Ubuntuã€ãŒãƒªãƒªãƒ¼ã‚¹
Minimal Ubuntu, on public clouds and Docker Hub(Canonicalå…¬å¼ãƒ–ãƒã‚°ã‚ˆã‚Š) Canonicalã¯2018å¹´7月9æ—¥(米国時間)ã€ãƒ‘ブリッククラウドãŠã‚ˆã³Docker Hubã«æœ€é©ã—ãŸLinuxディストリビューション「Minimal Ubuntuã€ã‚’リリースã—ãŸã“ã¨ã‚’明らã‹ã«ã—ãŸã€‚AWS(Amazon Web Services)ãŠã‚ˆã³GCP(Google Cloud Platform)を推奨パブリッククラウドã¨ã—ã€ã‚¤ãƒ¡ãƒ¼ã‚¸ãƒ•ã‚¡ã‚¤ãƒ«ã¯Web上ã‹ã‚‰ãƒ€ã‚¦ãƒ³ãƒãƒ¼ãƒ‰ã§ãる。 Minimal Ubuntuã¯ã‚¯ãƒ©ã‚¦ãƒ‰ä¸Šã®ä»®æƒ³ãƒžã‚·ãƒ³ç”¨OSã¨ã—ã¦è¨è¨ˆã—ã€æ¨™æº–ã®Ubuntuã¨æ¯”較ã™ã‚‹ã¨ã€ã‚¤ãƒ¡ãƒ¼ã‚¸ã‚µã‚¤ã‚ºã¯50%未満ã€èµ·å‹•ã¯40%高速化ã—ãŸã€‚Amazon EC2ã‚„GCE(Google Compute Engine)ã€ã‚³ãƒ³ãƒ†ãƒŠã¯LXDã‚„KVMã€OpenStack
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Docker Desktop for Linux user manual | Docker Documentation
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DockerコンテナãŒé…ããªã‚‹ã‚‚ã†ä¸€ã¤ã®åŽŸå› | POSTD
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New Amazon Linux Container Image for Cloud and On-Premises Workloads | Amazon Web Services
AWS News Blog New Amazon Linux Container Image for Cloud and On-Premises Workloads The Amazon Linux AMI is designed to provide a stable, secure, high performance execution environment for applications running on EC2. With limited remote access (no root login and mandatory SSH key pairs) and a very small number of non-critical packages installed, the AMI has a very respectable security profile. Man
自作Linuxコンテナã®æ™‚代 - ゆã†ã†ãブãƒã‚°
最近ã€Docker以外ã®ã‚³ãƒ³ãƒ†ãƒŠåž‹ä»®æƒ³åŒ–技術ã®æµã‚Œã¨ã—ã¦ã€è‡ªä½œã‚³ãƒ³ãƒ†ãƒŠã‚¨ãƒ³ã‚¸ãƒ³ã®æ™‚代ãŒæ¥ã‚‹ã®ã§ã¯ãªã„ã‹ã¨æ„Ÿã˜ã¦ã„る。 自作コンテナエンジンã¨ã¯ã€ã‚³ãƒ³ãƒ†ãƒŠåž‹ä»®æƒ³åŒ–技術を構æˆã™ã‚‹å€‹ã€…ã®è¦ç´ 技術を組ã¿åˆã‚ã›ã€è‡ªåˆ†ã®ç”¨é€”ã«ã‚ã‚ã›ã¦æœ€é©åŒ–ã—ãŸã‚³ãƒ³ãƒ†ãƒŠã‚¨ãƒ³ã‚¸ãƒ³ã®ã“ã¨ã 。 ä»–ã®OSã®ã‚³ãƒ³ãƒ†ãƒŠä»®æƒ³åŒ–技術ã«ã¤ã„ã¦ç–Žã„ãŸã‚ã€ä»¥ä¸‹ã§ã¯Linuxã«é™å®šã—ã¦è©±ã‚’進ã‚る。 æ¦‚è¦ Dockerã‚‚å«ã‚ã¦ã€Linuxコンテナã¯ã‚³ãƒ³ãƒ†ãƒŠã‚’構æˆã™ã‚‹è¤‡æ•°ã®è¦ç´ 技術ã®çµ„ã¿åˆã‚ã›ã§ã‚る。自分ã®ã‚„ã‚ŠãŸã„ã“ã¨ã«å¯¾ã—ã¦ã€Dockerã‚’ã¯ã˜ã‚æ—¢å˜ã®ã‚³ãƒ³ãƒ†ãƒŠã‚¨ãƒ³ã‚¸ãƒ³ãŒè¤‡é›‘ã™ãŽã‚‹ã‚±ãƒ¼ã‚¹ãŒã‚る。ãã“ã§ã€è‡ªåˆ†ã®ç”¨é€”ã«ã‚ã‚ã›ã¦ã‚³ãƒ³ãƒ†ãƒŠã‚¨ãƒ³ã‚¸ãƒ³ã‚’自作ã™ã‚‹ã“ã¨ã‚’考ãˆã¦ã¿ã‚‹ã€‚libcontainerã«ä»£è¡¨ã•ã‚Œã‚‹ã‚ˆã†ã«ã€Linuxコンテナエンジンを自作ã—ã‚„ã™ã„環境ãŒæ•´ã„ã¤ã¤ã‚る。今後ã¯ã€å·¨å¤§ãªã‚³ãƒ³ãƒ†ãƒŠã‚¨ãƒ³ã‚¸ãƒ³ã«å¯¾ã—ã¦ã€UNIX哲å¦ã«åŸºã¥ã„ã¦åˆ¶å¾¡å¯èƒ½ãªå°ã•ãªã‚³
Docker 㨠SO_REUSEPORT を組ã¿åˆã‚ã›ã¦ã¿ã‚‹ã€‚ãŠãらããã®1 - blog.nomadscafe.jp
SO_REUSEPORTã¯Linux Kernel 3.9ã‹ã‚‰ã‚µãƒãƒ¼ãƒˆã•ã‚Œã¦ã„る機能ã§ã€è¤‡æ•°ã®ãƒ—ãƒã‚»ã‚¹/Listenerã‹ã‚‰åŒã˜TCPãƒãƒ¼ãƒˆã‚’bindå¯èƒ½ã«ã—ã¦ã€Kernel㌠ãã‚Œãžã‚Œã®ãƒ—ãƒã‚»ã‚¹ã«æŽ¥ç¶šã‚’分散ã—ã¦ãれるã¨ã„ã†æ©Ÿèƒ½ã§ã™ã€‚preforkãªã‚µãƒ¼ãƒã¯listenã—ã¦ã‹ã‚‰workerã‚’forkã—ã€ãã‚Œãžã‚Œã§acceptã‚’è¡Œã†ã¨ã„ã†æ‰‹é †ã‚’è¸ã¿ã¾ã™ãŒã€SO_REUSEPORTを使ãˆã°ãã®æ‰‹é †ã‚’è¸ã¾ãªãã¦ã‚‚複数プãƒã‚»ã‚¹ã‹ã‚‰åŒã˜ãƒãƒ¼ãƒˆã‚’Listenã—ã¦å‡¦ç†ã®ä¸¦åˆ—性をã‚ã’ãŸã‚Šã€hot-depolyãŒå®Ÿç¾ã§ãã¾ã™ã€‚ Docker ã®Host networking機能ã¨SO_REUSEPORTを使ã£ã¦ã€è¤‡æ•°ã®ã‚³ãƒ³ãƒ†ãƒŠã‹ã‚‰åŒã˜ãƒãƒ¼ãƒˆã‚’bindã§ãã‚Œã°ã€ã‚³ãƒ³ãƒ†ãƒŠã®hot-deployãŒã§ãã‚‹ã‚“ã˜ã‚ƒãªã„ã‹ã¨æ€ã£ãŸã®ã§ã€è©¦ã—ã¦ã¿ã¾ã—ãŸã€‚ SO_REUSEPORTã«ã¤ã„ã¦ã¯ä»¥ä¸‹ã®blogãŒå‚考ã«ãªã‚Šã¾ã™ã€‚
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Dockerã§Linuxデスクトップを使ã£ã¦ã¿ã‚‹ - GeekFactory
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CoreOS 入門 - Qiita
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