投稿時間:2022-08-22 21:25:09 RSSフィード2022-08-22 21:00 分まとめ(31件)

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IT	ITmedia 総合記事一覧	[ITmedia News] ゲームシステムを高速化する社内ノウハウを無償公開　Unityエンジニア向けに　サイバーエージェント	https://www.itmedia.co.jp/news/articles/2208/22/news185.html	github	2022-08-22 20:15:00
AWS	lambdaタグが付けられた新着投稿 - Qiita	Serverless frameworkでGoをデプロイしたらPath errorが発生する	https://qiita.com/Sicut_study/items/c26064b5445c866dd861	patherror	2022-08-22 20:13:16
python	Pythonタグが付けられた新着投稿 - Qiita	discordのwebhookはdiscord.pyで楽して作ろう	https://qiita.com/beatbox4108/items/2b5c6205293ca98bfe90	beatbox	2022-08-22 20:35:11
js	JavaScriptタグが付けられた新着投稿 - Qiita	今週の学び　第12回	https://qiita.com/taka0713/items/5e2763a2163ab16c79aa	checked	2022-08-22 20:58:46
Linux	Ubuntuタグが付けられた新着投稿 - Qiita	vim-plugでE117 Uknown function plug#beginまたはUknown function plug#end	https://qiita.com/Sicut_study/items/0564d931085e54cef8fd	euknownfunctionplugbegin	2022-08-22 20:10:58
AWS	AWSタグが付けられた新着投稿 - Qiita	Serverless frameworkでGoをデプロイしたらPath errorが発生する	https://qiita.com/Sicut_study/items/c26064b5445c866dd861	patherror	2022-08-22 20:13:16
Docker	dockerタグが付けられた新着投稿 - Qiita	🥳 CNCF LFX Mentorship 2022秋 を通じて WasmEdge プロジェクトに貢献してください	https://qiita.com/MileyFu/items/fff9726b50e39d66842a	doyoueverfeelitshardtocon	2022-08-22 20:31:46
golang	Goタグが付けられた新着投稿 - Qiita	GoのSwaggerでFailed to load API definitionエラーが発生する	https://qiita.com/Sicut_study/items/ab65655eaaafcf0dd6fa	failedtoloadapidefinition	2022-08-22 20:58:09
golang	Goタグが付けられた新着投稿 - Qiita	【Go/Gin】手早くサイトを作るチートシート	https://qiita.com/konbu9640/items/1922860b850b1d541823	gogin	2022-08-22 20:56:05
golang	Goタグが付けられた新着投稿 - Qiita	Goで go invalid memory address or nil pointer dereference エラーが発生する	https://qiita.com/Sicut_study/items/134bb38a2af6e10542b4	address	2022-08-22 20:51:50
golang	Goタグが付けられた新着投稿 - Qiita	高級言語で`string`とか`slice`を使う際に気をつけている効率化のためのTips	https://qiita.com/hitoshi44/items/c826d0d3b42bb69c0959	hitoshi	2022-08-22 20:31:21
海外TECH	DEV Community	Docker Logging - A Complete Guide to Logs in Docker	https://dev.to/signoz/docker-logging-a-complete-guide-to-logs-in-docker-ecp	Docker Logging A Complete Guide to Logs in DockerThis tutorial was originally posted on SigNoz Blog and is written by Muskan PaliwalLog analysis is a very powerful feature for an application when it comes to debugging and finding out which flow is working properly in the application and which is not Log management helps the DevOps team debug and troubleshoot issues faster making it easier to identify patterns spot bugs and ensure they don t come back to bite you In this article we will discuss log analysis in Docker and how logging in Docker containers is different than in other applications These logs are specific to Docker and are stored on the Docker host We ll thoroughly discuss the docker logs command and how we can configure a logging driver for containers Why is Docker logging different Life would be much simpler if applications running inside containers always behaved correctly But unfortunately as every developer knows that is never the case With other systems recording application log messages can be done explicitly by writing those messages to the system logger This is done using syslog system call from our application But this doesn t work for containerized logging here s why Containers are Multi leveledContainers are just like boxes inside a big box No matter how simple the Docker installation is we ll have to deal with two levels of aggregation One level is where you see logs inside the container in your Dockerized application known as Docker Container Logs The second level where you see the logs from the host servers that is system logs or Docker daemon logs These are generally located in  var log A log aggregator that has access to the host application can not pull log files from the Dockerized application as if they are the host log files In these scenarios we will have to find a way to correlate the logs Containers are ephemeralContainer based environments keep changing very often but it doesn t serve well to the monitor Docker containers emit logs to stdout and stderr output streams Logs are often stored on the Docker host because containers are stateless failing to remember or save data from previous actions json file is the default logging driver which writes JSON formatted logs to a container specific file The json file is stored in the var lib docker containers directory on a Linux Docker host Here s how you can access the file var lib docker containers lt container id gt lt container id gt json log It is dangerous to store logs in a Docker host because Docker doesn t impose any size limit on log files and they can build up over time and eat into your disk space It is advised to store logs in a centralized location and enable log rotation for all the Docker containers docker logs commanddocker logs command is used to get all the information logged by a running container The docker service logs command is used to do the same by all the containers participating in a service The example below shows JSON logs created by the hello world Docker image using json file driver log Hello there n stream stdout time T Z log This message shows that everything seems to be working correctly n stream stdout time T Z The log follows a pattern of printing Log s originEither stdout or stderrA timestampIn order to review a container s logs from the command line you can use the docker logs lt container id gt command Using this command the logs shown above are displayed this way Hello there This message shows that everything seems to be working correctly Here are a few options in the command that you can use to modify the output of your log docker logs OPTIONS lt container id gt Using f or follow option if you want to follow the logs docker logs lt container id gt followIf you want to see the last N log lines docker logs lt container id gt tail NIf you want to see the specific logs use the grep command docker logs lt container id gt grep patternIf you want to show errors docker logs lt container id gt grep i errorOnce an application starts growing you tend to start using Docker Compose docker compose logs command shows logs from all the services running in the containerized application Note that the offering from the docker logs command may vary based on the Docker version you are using In case of Docker Community  docker logs can only read logs created by the json file local and journald drivers whereas in case of Docker Enterprise  docker logs can read logs created by any logging driver Configure a Docker container to use a logging driver Step Configure the Docker daemon to a logging driverSet the value of the log driver key to the name of the logging driver in the daemon json configuration file Then restart Docker for the changes to take effect for all the newly created containers All the existing containers will remain as they are Let s set up a default driver with some additional information log driver json file log opts max size m max file To find the current logging driver for the Docker daemon docker info format LoggingDriver json fileIn order to use a different driver you can override the default by adding the  log driver option to the docker run command that creates a container For example the following command creates an Apache httpd container overriding the default logging driver to use the journald driver instead docker run log driver journald httpd Step Deciding the delivery mode of log messages from container to log driverDocker provides two types of delivery modes for log messages Blocking default mode As the name suggests this mode blocks the main process inside a container to deliver log messages And this will add latency to the performance of the application But it ensures that all the log messages will be successfully delivered to the log driver The default log driver json files logs messages very quickly since it writes to the local file system Therefore it s unlikely to cause latency But drivers like gcplogs and awslogs open a connection to a remote server and are more likely to block and cause latency Non blockingIn this mode the container writes logs to an in memory ring buffer This in memory ring buffer works like a mediator between logging driver and the container When the logging driver isn t busy processing the logs the container shares the logs to the driver immediately But when the driver is busy these logs are put into the ring buffer This provides you a safety check that a high volume of logging activity won t affect the application s performance running inside the container But there is a downside It doesn t guarantee that all the log messages will be delivered to the logging driver In cases where log broadcasts are faster than the driver processor the ring buffer will soon run out of space As a result buffered logs are deleted to make space for the next set of incoming logs The default value for max buffer size is MB To change the mode etc docker daemon json log driver json file log opts max size m max file mode non blocking Alternatively you can set the non blocking mode on an individual container by using the  log opt option in the command that creates the container docker run log opt mode non blocking alpine echo hello worldThe default log driver stores data in a local file but if you want more features then you can opt for other log drivers as well such as logagent syslog journald elf awslogs etc Logging strategiesDocker logging means logging events of the dockerized application host OS and the docker service There are various ways to log events for a docker container Some of them are Application logging In this strategy the application inside the container can have its own logging framework The logs can either be stored locally or sent to a centralized location using a log management tool Data volumes Because containers are stateless and to avoid losing logs data you can bind the container s directory to the host OS directory Containers can now be terminated or shut down and access logs from multiple containers You can run a regular backup in order to prevent data corruption or loss in case of failure Docker logging driver This type has already been discussed in detail The configured driver reads the data broadcast by the container s stdout or stderr streams and writes it to a file on the host machine You can then send this log data anywhere you want to Final ThoughtsContainerization surely provides an easy way to deal with application portability and scalability issues but it does requires maintenance time to time Container environments are just like a box inside a box with multiple layers of abstraction So it becomes hard to debug in such environments and if performed correctly log analysis can be your go to friend to find out performance related issues In this guide you learned how to configure the Docker logging driver for log analysis in containerized applications how Docker logging is different from application logging hosted on a physical machine or virtual host and in detail study of the docker logs command There are various logging strategies that you can follow for log analysis This blog thoroughly discussed the default logging strategy json file and the two delivery modes of log messages Containers being stateless doesn t ensure data persistence hence to prevent data loss you can use various log management tools But logs are just one aspect of getting insights from your software systems Modern applications are complex distributed systems For debugging performance issues you need to make your systems observable Logs when combined with metrics and traces form an observability dataset that can help you debug performance issues quickly SigNoz an open source APM can help you monitor your application by collecting all types of telemetry data It correlates all your telemetry data logs metrics and traces into a single suite of monitoring It is built to support OpenTelemetry natively OpenTelemetry is becoming the world standard for instrumenting cloud native applications You can check out SigNoz GitHub repo If you want to read more about SigNoz check out the following blog SigNoz an open source alternative to DataDog	2022-08-22 11:42:27
海外TECH	DEV Community	Awesome Packages for React JS	https://dev.to/shubhamtiwari909/awesome-packages-for-react-js-8ip	Awesome Packages for React JSHello Guys today i will show you some awesome packages to use in React Js I will only briefly explain them and provide the documentation link so that you can check it yourself Let s get started React router dom This package helps in providing easy and flexible routings in React Installation npm i react router domDocumentation React reveal It is used for animation and is easy to use and the animations are also good and awesome Installation npm i react revealDocumentation React icons It provides nearly all the icons you need to create your website and the icons are awesome and comes in different shades and types Installation npm i react iconsDocumentation React redux It is used with redux and lets your React component read data from the redux store and dispatch action to the store to update states Installation npm install react reduxDocumentation Formik with Yup It is used to provide validation and Error Handling while dealing with forms in React Js It is quite easy to use and also allow us to create validation schema for our forms with yup Installation npm install formik yupDocumentation Formik Yup Formik with yup combined axiosIt is HTTP client which works with promises It can be used in place of fetch method where we need to manually do everything In axios all we have to do is provide the API url a then method to handle the response coming back from the API and a catch method to handle errors Installation npm install axiosDocumentation React toastify It is used to create toast notification which closed automatically when the timer goes down and it has many colors and designs available and also can be easily integrate with other React Components Installation npm i react toastifyDocumentation THANK YOU FOR CHECKING THIS POSTYou can contact me on Instagram LinkedIn Email shubhmtiwri gmail com You can help me by some donation at the link below Thank you gt lt Also check these posts as well	2022-08-22 11:20:24
Apple	AppleInsider - Frontpage News	Daily deals August 22: $250 off M1 Pro 16-inch MacBook Pro, 50% off Wacom Intuos, $770 off 75-inch Sony smart TV, more	https://appleinsider.com/articles/22/08/22/daily-deals-august-22-250-off-m1-pro-16-inch-macbook-pro-50-off-wacom-intuos-770-off-75-inch-sony-smart-tv-more?utm_medium=rss	Daily deals August off M Pro inch MacBook Pro off Wacom Intuos off inch Sony smart TV moreMonday s best deals include AirPods a half price Klipsch home theater system a Lego Technic F set and much more Best Deals for August AppleInsider checks online stores daily to uncover discounts and offers on hardware and other products including Apple devices smart TVs accessories and other items The best offers are compiled into our regular list for our readers to use and save money Read more	2022-08-22 11:36:43
Apple	AppleInsider - Frontpage News	What to expect from Apple's September iPhone 14 event	https://appleinsider.com/articles/22/08/13/what-to-expect-from-apples-september-iphone-14-event?utm_medium=rss	What to expect from Apple x s September iPhone eventEvery year anticipation grows for what Apple will release in the fall alongside the annual iPhone refresh Here s what to expect from September s Apple event Regular as clockwork Apple takes time in the fall to launch a swathe of new products intended for consumers to buy during the following holiday shopping period As a very lucrative time of year for the company Apple puts a lot of effort into its fall events showing off as many new items as possible While primarily centered on its iPhone product line Apple does take time to look at other complementary products and services Read more	2022-08-22 11:11:01
海外TECH	Engadget	The Morning After: The first look at HBO’s live-action ‘The Last of Us’ adaptation	https://www.engadget.com/the-morning-after-first-look-at-hb-os-live-action-the-last-of-us-adaptation-113131039.html?src=rss	The Morning After The first look at HBO s live action The Last of Us adaptationAhead of the premiere of HBO s new Game Of Thrones spin off House of the Dragon the company shared the first glimpse of its adaptation of PlayStation s The Last of Us In a trailer published on YouTube we get a heady seconds of Pedro Pascal and Bella Ramsey as Joel and Ellie including a flashback to Joel interacting with his daughter The episode series should premiere in early ーMat SmithThe biggest stories you might have missedSony is reportedly making a Days Gone movieNetflix s ad supported tier might not play commercials during new movies Jurassic World Dominion heads to Peacock on September ndRecommended Reading Productivity surveillanceHitting the Books How can privacy survive in a world that never forgets The best student discounts we found for Mark Zuckerberg promises major updates to Meta s terrible Horizon avatarsLincoln replaced the steering wheel with a chess piece controller in its new concept carIt drives itself LincolnLast week Lincoln revealed the Model L its futuristic foray into electrified mobility which draws inspiration from the company s very first luxury sedan the Model L The Model L tries to match the opulence of the original with “next generation battery cell and pack technologies that apparently deliver “game changing energy density Instead of a steering wheel it has a “jewel inspired chess piece controller that captures light and depth by redefining the vehicle controls inside the cabin Sure Continue reading Scientists may have found an affordable way to destroy forever chemicalsPFAS are everywhere and have been linked to negative health effects A team of scientists may have found a safe affordable way to destroy forever chemicals PFAS or perfluoroalkyl and polyfluoroalkyl substances are in many household items including non stick Teflon pans and dental floss They share one common feature a carbon fluorine backbone that is one of the strongest known bonds in organic chemistry It s what gives PFAS treated cookware its non stick quality while also making them harmful to humans A group of scientists have been able to break down these PFAS with a mix of sodium hydroxide and an organic solvent called dimethyl sulfoxide Continue reading The Sega Genesis Mini s game line up includes two unreleased titlesLet s not forget the Sega CD classics Sega has unveiled the complete list of games coming with the Genesis Mini and it s clear the new machine is as much for collectors as it is nostalgic fans The game catalog includes two previously unreleased games for starters There s Devi amp Pii a paddle style game designed by Sonic s Takashi Iizuka as well as Mindware s finished but unpublished puzzler Star Mobile I think the Sega CD titles ーincluding Night Trap and CD versions of classics Sonic the Hedgehog and Ecco the Dolphin ーare the most exciting part Continue reading Search ads could arrive in Apple Maps as early as next yearThe company may have already allocated resources to the project Apple could integrate ads into Maps by next year according to Bloomberg s Mark Gurman Gurman says the company has begun preparing the software to support search ads He previously reported the company had tested an internal version of Maps that included search ads Apple already serves ads through its App Store Developers can pay the company to prioritize their software in search results ensuring it shows up at the top of the page when users input specific terms Search ads within Maps would work in a similar way says Gurman Continue reading	2022-08-22 11:31:31
ニュース	BBC News - Home	Adelaide Cottage: William and Kate to move to cottage on Windsor estate	https://www.bbc.co.uk/news/uk-62632439?at_medium=RSS&at_campaign=KARANGA	cambridges	2022-08-22 11:44:35
ニュース	BBC News - Home	Park Royal crash: Woman killed as car ends up on Tube tracks	https://www.bbc.co.uk/news/uk-england-london-62589528?at_medium=RSS&at_campaign=KARANGA	crash	2022-08-22 11:39:02
ニュース	BBC News - Home	Lincoln: Police chief defends officers dancing Macarena at Pride event	https://www.bbc.co.uk/news/uk-england-lincolnshire-62630867?at_medium=RSS&at_campaign=KARANGA	criticism	2022-08-22 11:42:47
ニュース	BBC News - Home	Cineworld confirms it is considering bankruptcy	https://www.bbc.co.uk/news/business-62629932?at_medium=RSS&at_campaign=KARANGA	sales	2022-08-22 11:10:08
ニュース	BBC News - Home	Tory leadership: Liz Truss dodging scrutiny of tax plans, claims Sunak	https://www.bbc.co.uk/news/uk-politics-62628176?at_medium=RSS&at_campaign=KARANGA	contest	2022-08-22 11:25:24
北海道	北海道新聞	給付金詐欺疑いで逮捕、整体院の男性不起訴　札幌地検	https://www.hokkaido-np.co.jp/article/720728/	新型コロナウイルス	2022-08-22 20:40:00
北海道	北海道新聞	新秩父宮、鹿島代表のグループに　整備事業者を選定、２４年着工へ	https://www.hokkaido-np.co.jp/article/720727/	明治神宮外苑	2022-08-22 20:40:00
北海道	北海道新聞	事業承継支援５０社まで拡大　りそな銀行社長、今後１０年間で	https://www.hokkaido-np.co.jp/article/720726/	共同通信	2022-08-22 20:36:00
北海道	北海道新聞	新千歳の国内線旅客、７月は１５０万人　前年比９６％増	https://www.hokkaido-np.co.jp/article/720724/	発表	2022-08-22 20:35:00
北海道	北海道新聞	コオロギ入りプロテインバー、セコマの一部店舗で販売　徳島大発ベンチャー	https://www.hokkaido-np.co.jp/article/720722/	一部店舗	2022-08-22 20:32:00
北海道	北海道新聞	別居親、共同親権導入訴え　「子どもと会わせてもらえない」	https://www.hokkaido-np.co.jp/article/720682/	共同親権	2022-08-22 20:12:26
北海道	北海道新聞	国の借金「深刻な状態」　札幌財務局が講演と意見交換	https://www.hokkaido-np.co.jp/article/720720/	北海道財務局	2022-08-22 20:27:00
北海道	北海道新聞	国内で１４万１０５９人感染　新型コロナ、２４５人死亡	https://www.hokkaido-np.co.jp/article/720718/	新型コロナウイルス	2022-08-22 20:25:00
北海道	北海道新聞	手足口病、道内で３年ぶり流行　各地で警報レベル　こまめな手洗いで拡大防止を	https://www.hokkaido-np.co.jp/article/720716/	手足口病	2022-08-22 20:23:00
北海道	北海道新聞	標茶高「カタリ場」継続へ　町など５者連携協定	https://www.hokkaido-np.co.jp/article/720711/	釧路管内	2022-08-22 20:10:00