關鍵字: GKE, conntrack, HAProxy
影響: 網路重度服務遇見大量錯誤
今天這個案例的重點非常簡單,Kubernetes(GKE) 會根據每個節點上面的記憶體大小去設定相關的 conntrack_max 的數值。因此對於一個小記憶體的節點上運行一個有網路重度的服務,非常容易踩到 conntrack_max 的上限最後導致連線 reset 以及 timeout.
conntrack 是 Linux Kernel 非常重要的網路功能,透過 conntrack (connection tracking) 可以實現非常多的功能,kernel 會去追蹤與監控系統上看到的所有連線,每個連線都包含兩個方向的封包。
根據作者的測試,於 GKE 觀察的結果是大概每 MB 可提升5條 connection的上限。
團隊的應用程式是一個類似於 proxy 的角色,這個應用程式大概每秒要處理一萬個以上的 rquest,而這個現象是當團隊針對整個架構進行一番改正後,開始注意到有網路連線出現問題。
針對這個問題作者提出了幾個解決思路
1. 針對網路連線非常重度的應用程式,將其給配置到比較強力效能的機器人,才可以獲得更高數值的 conntrack_max
2. 透過 init-container/daemonset 等方式,手動執行 sysctl 去修改節點上的 conntrack_max
3. 透過 Prometheus 去監控系統上目前所有節點 conntrack 使用的數量,藉此提醒團隊這個數值也很重要,需要監控
4. 1.15 以後的 kubernetes 有一些小的修復可以幫忙移除一些不合法的 conntrack,勁量讓 conntrack pool 留給有用的連線
https://deploy.live/blog/kubernetes-networking-problems-due-to-the-conntrack/
同時也有6部Youtube影片,追蹤數超過4,110的網紅mapleLIFE,也在其Youtube影片中提到,Hey Everyone!!!! So if you notice, this weeks Monday to Friday VLOG is one day short. This is because Friday will be a special video upload. Me and...
「container tracking」的推薦目錄:
- 關於container tracking 在 矽谷牛的耕田筆記 Facebook 的精選貼文
- 關於container tracking 在 椪皮仔 Facebook 的精選貼文
- 關於container tracking 在 WildAid Taiwan 野生救援 Facebook 的最佳貼文
- 關於container tracking 在 mapleLIFE Youtube 的精選貼文
- 關於container tracking 在 kormaruR Youtube 的最佳解答
- 關於container tracking 在 kormaruR Youtube 的精選貼文
- 關於container tracking 在 Container Tracking - YouTube 的評價
container tracking 在 椪皮仔 Facebook 的精選貼文
「每日英文閱讀分享#011」
今天跟大家分享一個常見字「contain」,
contain 就是 v. 包含
container 就是 n. 容器
有什麼好講的拉~~~
但是其實contain還有另一個很正式的用法跟包含一點關係都沒有,甚至有點相反的意思。
「contain」:If you contain something, you control it and prevent it from spreading or increasing—Collins Dictionary
例句:More than a hundred firefighters are still trying to contain the fire at the plant.—Collins Dictionary
另一個跟情感面較為相關的意思是:If you cannot contain a feeling such as excitement or anger, or if you cannot contain yourself, you cannot prevent yourself from showing your feelings.-Collins Dictionary
例句:He was bursting with curiosity and just couldn't contain himself.—Collins Dictionary
大家可以分辨看看在本文當中的contain是什麼用法?
原文:For example, to help contain the coronavirus, Alipay and WeChat worked with the Shanghai government to develop a QR tracking system that was adopted by 10 million users in just six weeks.
今天例句從Collins Dictionary擷取,也是一個我很愛用的字典,如果寫一篇字典比較,大家會有興趣嗎?留言告訴我~~
#言之有物
#英語學習
#商業英文
#BusinessEnglish
#InternationalBusiness
#每日英文閱讀分享
#一起來建立英文閱讀習慣吧
container tracking 在 WildAid Taiwan 野生救援 Facebook 的最佳貼文
Massive global container shipping line 'COSCO' fingered as major facilitator of Hong Kong's dirty shark fin trade. Yesterday the Hong Kong government proudly announced that it had seized a record 880 kilos (0.88 tonnes) of illegal hammerhead shark fin en route from Panama to Hong Kong, with Hong Kong as the final destination.
Oceanic Preservation Society (OPS) has obtained the Bill of Lading which clearly shows the involvement of COSCO – one of the last remaining container shipping lines not to commit to implementing a 'No Shark Fin' carriage policy.
BREAKING NEWS via HONG KONG - PLS SHARE!
Massive global container shipping line 'COSCO' fingered as major facilitator of Hong Kong's dirty shark fin trade. Yesterday the Hong Kong government proudly announced that it had seized a record 880 kilos (0.88 tonnes) of illegal hammerhead shark fin en route from Panama to Hong Kong, with Hong Kong as the final destination: http://bit.ly/29ncufG
Oceanic Preservation Society (OPS) has obtained the Bill of Lading which clearly shows the involvement of COSCO – one of the last remaining container shipping lines not to commit to implementing a 'No Shark Fin' carriage policy: http://bit.ly/29px3tF
A WWF Hong Kong report released in May 2016 confirmed that 16 out of 20 of the world's container shipping lines are now shark free, and COSCO was not on that list: http://bit.ly/1NT22y4
Complementing the work that WildAid has been doing to secure bans on shark fin cargo from over 35 global passenger airlines, WWF has worked with most of the world's major container shipping companies to secure total bans on shark fin shipping. This has resulted in the majority of international container shipping lines now banning shark fin 100%.
Exactly where the hammerhead shark fins came from before Panama is anyone's guess, and the matter is still under investigation by the Hong Kong authorities. But what is known from tracking the container on COSCO's own website is that the shark fins passed through Houston, Texas, on their way to Hong Kong: http://bit.ly/29mSmg8
A ban on the shark fin trade took effect in Texas last Friday, making it the first state on the Gulf of Mexico coast to enact a ban on the trade, joining 10 other states, mostly on the Atlantic and Pacific coasts. The law, passed with bipartisan support in the Republican-dominated legislature, makes it a criminal act to buy, sell, or transport with the intention to sell shark fin.
What the Bill of Lading also reveals is that the 880 kilos of CITES-listed hammerhead formed part of a much larger shipment of 4.9 tonnes of shark fin, shark tails and fish maw: http://bit.ly/29px3tF
According to WildAid, quoted in South China Morning Post SCMP, "This bust proves that no container shipping line or airline can ensure that outlawed fins are not being concealed inside shipments of other, identical looking, non-outlawed shark fins. As such we urge COSCO and FedEx to commit to a shark-free carriage policy immediately, in order to steer their trusted brands away from reputational risk and to protect sharks from extinction.” http://bit.ly/29t7ad2
The situation in our oceans is urgent. And that's why now is the time for FedEx– and COSCO – to also step up and commit to protecting sharks and our oceans.
Therefore we urge:
-COSCO and FedEx to STOP shipping shark fin with immediate effect.
-COSCO and FedEx to operate their business morally, ethically and legally.
OPS commends the hard work and dedication of the Hong Kong authorities, notably the Agriculture Fisheries and Conservation Department and Hong Kong Customs, for their hard work and dedication in successfully tracking and eventually busting this record large shipment of endangered hammerhead shark fin from Central America. END THE WAR ON SHARKS! #RacingExtinction
container tracking 在 mapleLIFE Youtube 的精選貼文
Hey Everyone!!!! So if you notice, this weeks Monday to Friday VLOG is one day short. This is because Friday will be a special video upload. Me and a few other Co Workers are going to a gemstone show. This was a regular working week. The best meal this week was Deep Fried Shrimp. This is because seafood in Calgary is so expensive I rarely buy it. My recent EBAY online shopping, the tracking shipment is finally showing some movement. Thanks for watching & supporting my Channel.
container tracking 在 kormaruR Youtube 的最佳解答
One Piece Kaizoku Musou (Pirate Warriors) : 頂上決戦, クザン (Kuzan), ジュラキュール・鷹の目のミホーク
難しい Hard Mode
Main Log: EP15 - Marineford Scenario
15:45 - Mihawk
Took me many tries to finally kill Mihawk. His attack hurts and he can still attack you when your midway into the combo. Mihawk is totally optional but I wanted to kill him.
Because I got the 世界会議 World Conference coin set skill, I can to take advantage of back tracking to collect items. (Skill: Item every 10Beat and item recovery rate up)
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Playlist:
http://www.youtube.com/playlist?list=PLA53F3B37FDF747FD
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H264 Video Codec @ 1280x720p 30FPS 8mb bitrate
44.1KHz 96,000bps Audio Bitrate
MP4 Container
container tracking 在 kormaruR Youtube 的精選貼文
二ノ国 白き聖灰の女王 プレイ パート30 (Ni no Kuni: Shiroki Seihai no Joou)
Ni no Kuni: Wrath of the White Witch
First Playthrough
Now that I obtained the ship, I went back tracking to clear out some of the older side quest.
Part 27 to 30 will sub questing, so skip if you find it boring.
Tho I'm not to grinding but I try to use every opportunity to catch the imaajiin that I haven't catch yet.
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Playlist:
http://www.youtube.com/playlist?list=PL09443B0BA6FFEE48
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H264 Video Codec @ 1280x720p 30FPS 8mb bitrate
44.1KHz 96,000bps Audio Bitrate
MP4 Container
container tracking 在 Container Tracking - YouTube 的推薦與評價
Every second counts in maritime operations, with zero room for error. In this session we are joined by VEER and Canscan to discuss the video ... ... <看更多>