ref: https://loft.sh/blog/the-cost-of-managed-kubernetes-a-comparison/
本篇文章探討不同 Cloud Provider kubernetes 服務的差異,作者列舉了四個常見的 kubernetes 服務,包含 GKE, EKS, AKS 以及 DOKS。
這四個 kubernetes 服務所部署的 Kubernetes 叢集都有獲得 CNCF Kubernetes Certification 的認證,不同 Cloud Provider 都有自己的優缺點。
使用 Kubernetes 服務帶來的好處就是使用者通常不太需要去擔心如何處理
1. Kubernetes 核心元件之間的 Certificate (API Server, Controller, Scheduler, Kubelet ...etc)
2. 動態調整 Kubernetes 節點
3. 相較於單純靠社群, Cloud Provider 可以提供更快速且更好的支援(畢竟有付錢給對方)
因此該文章接下來就會針對這四個 Kubernetes 服務來探討一下彼此的差異。
註: 有興趣的話都可以用 Sonobuoy 這個開源專案來檢測自己維護的 Kubernetes 叢集,通過測試就可以把測試報告送到 GitHub 開 Issue 申請認證
GKE
1. Kubernetes 正式公開後一個月就 GKE 就出現了 (08/2015), 是最早的 Kubernetes 服務
2. GKE 會使用 gVisor 專注於安全層級的容器隔離技術來部署服務。
3. 有機會使用針對 Container 最佳化的 OS,有些 cloud provider 只能使用 Ubuntu image 之類的。
4. 服務出現問題時,可以啟動 auto-repair 來修復叢集,一種典型作法就是將一直回報為 NotReady 的 k8s 節點給重建
5. GKE 提供自動升級 Kubernetes 版本的功能,如果不想要的話記得要去關閉這個功能,否則自動升級是有可能讓某些應用程式無法正常運作的。
6. 使用 GKE 的話,要付每小時 $0.1 美元的管理費。如果使用 on-prem 的解決方案 (Anthos) 的話就可以免去這些管理費。
EKS
1. 06/2018 創立
2. 可以使用 Ubuntu Image 或是 AWS 針對 EKS 最佳化的 EKS AMI 來獲得更好的效能。
3. EKS 沒有提供自動升級 Kubernetes 版本的功能,官方有提供大量詳細的文件介紹如何手動升級 Kubernetes 版本
4. 沒有類似 auto-repair 的機制去幫忙監控與修復出問題的 k8s node,因此 EKS 使用者需要自己去監控與維護這些節點。
5. EKS 也是每小時 $0.10 的管理費用。 AWS Outposts/EKS Anywhere 這些 2021 啟動的專案讓你有機會將 EKS 部署到 on-prem 的環境中。
AKS
1. 06/2018 創立
2. AKS 沒有提供任何最佳化的 OS,你只能使用常見的那些 OS image 作為你的 k8s 節點
3. 預設情況不會自動升級 kubernetes 版本,不過 AKS 提供選項去開啟自動升級。Cluster 有四種不同策略(none,patch,stable,rapid)來自動更新你的 k8s 叢集。
4. AKS 預設不會啟動 auto-repair 功能。對於一直持續回報 NotReady 的節點, AKS 會先重起該節點,如果問題無法解決就會砍掉重建節點。
5. AKS 不收管理費
6. Azure 沒有特別提供一個供 on-prem 的 AKS 解決方案,不過透過 ARC 是有機會於 on-prem 的環境運行 AKS.
DOKS(DigitalOcean)
1. 05/2019 創立
2. 有提供 kubernetes 版本自動更新功能,但是只有針對 patch 版本的變化
3. 沒有 auto-repair 的功能
4. 文章撰寫的當下, DOKS 沒有任何文件說明如何於 on-prem 的環境運行 DOKS
5. 不收管理費
6. 相對其他三家來說,底層架構相對便宜,一個 DOKS 最低可以低到每個月 $10 美元。
價錢比較:
1. 假設需要創建一個擁有 20 節點並且有 80vCPU, 320GB RAM 的叢集 (GKE 因為每個節點都是 15GB,所以最後只能湊到 300GB)
2. 每個月為單位去計算價格,AKS/EKS/GKE 都使用其提供的價格計算機來粗估, DOKS 需要手動計算。
3. 價錢評比
a. AKS: $3416
b. EKS: $2928
c. DOKS: $2400
d. GKE: $1747
對文章有興趣的別忘了參閱全文
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UK STA CERTIFICATION
PROFESSIONAL CERTIFICATE IN TA (UTMSPACE)
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Teruskan belajar dan mengamalkan ilmu yang telah dipelajari. Semoga anda semua peroleh kejayaan dalam peperiksaan yang akan ditempuhi.
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調查發現: 最讓人資與獵頭吸睛的八大國際級證照/認證
.
國際證照/認證琳琅滿目,它們代表取證者具備該知識體系的理解與分析應用的基本能力,作為工作經驗 (有可能是土法煉鋼, 只知其然而不知其所以然,或蒙古大夫) 以外的專業知識檢定。全球最大的雇主品牌網站Glassdoor,針對美國負責招募的人力資源專業人員與獵頭顧問進行調查發現,目前會影響他們人才推薦的證照或認證有八大類:
.
1.美國人資協會HRCI/SHRM的人力資源管理師 (PHR, SPHR, GPHR)
.
2.國際專案管理師(PMP)
.
3. 銷售顧問培訓認證 (Challenger Sales, Spin Selling, Sandler Training)
.
4. 電腦系統維運證照 (A+, Network+)
.
5. 網路管理證照 (CCNA, CCNP, CCIE)
.
6. 銷售管理系統培訓認證 (Salesforce.com)
.
7. 網路社群行銷培訓認證 (Hubspot’s Inbound Certification)
.
8. Google數位學習認證 (Publisher, Analytics, AdWords等)
.
註: 證照Certification與認證Certificate的差異在於,證照考證與發照單位必須是中位的機構,不得自行開設證照考試準備的培訓課程或教材,通常較具公信力。認證,又稱培訓認證,就是由培訓機構自行開課並出題考證發照的形式。
.
https://www.glassdoor.com/blog/certifications-impress-recruiters
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Sharing with you, nice taste, crispy texture Sea Grapes. The Sea grapes, or green caviar is a kind of seaweed that grows underwater along the islands of Okinawa, Japanese. Sea grapes in Okinawa have been farmed for hundreds of years and are known as a staple of the food culture of the prefecture. Acknowledging the health benefits of Sea Grapes and the ideal weather for sea grapes of Khanh Hoa Coastal Province, the owner of Tri Tin brought the Okinawan sea grapes to Vietnam from 1997 and use Japanese technology to cultivate and distribute sea grapes back to Japan and many countries like USA, Australia, Taiwan, Korea, Singapore, France, Germany.
.
Established in 2002 in Nha Trang, Vietnam, TRI TIN is proud to be home to the largest sea grape farming area in Vietnam and to be the first company to meet the international standards of hygiene and food safety of sea grape.
The commitment to the motto "Quality is our first priority" is the reason why Tri Tin’s sea grapes products are always highly appreciated by domestic and international clients.
✅ CERTIFICATION: Halal, the International HACCP Certificate of Australia (about food safety), Level A Certificate of the facility.
The sea grapes, it is nice taste, crispy texture and fresh aroma of the ocean is not the only reason many people like Sea Grapes. Indeed, Sea Grapes is packed with vitamins and minerals such as vitamins A, B, C, K, Iron, Magnesium, Calcium, Zinc, Iodine, EPA, DHA, Fucoidan.
✅ HEALTH BENEFITS:
+ It helps children eat well
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+ Strengthen Immune System, Bones & Joints, Eyesight, and Heart.
+ Prevent Goiter, Hypertension & Diabetes, Constipation, and Obesity.
✅ HOW TO USE:
? STEP 1: Soak them into a bowl of clean water in 3 minutes, they will become fresh and tender as the initial state. IF YOU WANT THEM LESS SALTY, YOU CAN SOAK THEM IN CLEAN WATER 2 TO 3 TIMES.
? STEP 2: Take out the sea grapes, soak them in another bowl of clean cold/ice water in 3 minutes to make it fresher and crunchy as fresh sea grapes.
? STEP 3: Take out the sea grapes and eat them immediately because they will shrink back after 30 minutes. You can enjoy them like fruits, make a salad, and cook soup. It tastes very well when dipping in roasted sesame sauce or lime chilly sauce.
WEIGHT: 20 grams/pack (20 grams of dehydrated sea grapes can expand to 80 grams in water).
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certificate certification 在 Hot Emma Youtube 的最佳解答
Hot Emma
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➽https://www.instagram.com/lxxooemma/
Twitter
➽https://twitter.com/HotEmma3
Tumblr
➽https://www.tumblr.com/blog/hot-emma-blog
––––––––––––––––––––––––––––––
Rody
Instagram
➽ https://www.instagram.com/aaa_rody/
––––––––––––––––––––––––––––––
Experience:
Powerlifting 2015 Tainan cup52kg Total 2nd place
Powerlifting 2016 National cup 52kg Deadlift 3rd place
Bodybuilding 2016 National cup physique163+ 3rd place
Bodybuilding 2016 Taipei cup physique163+ 3rd place
Bodybuilding 2017 National president cup physique163+ 2nd place
Bodybuilding 2017 National youth cup open physique163+ 3rd place
Bodybuilding 2017 1st Fitness Factory cup invitation bikini fitness 163+ 2nd place
Bodybuilding 2017 Tainan cup open physique163+ 3rd place
Bodybuilding 2017 IFBB Mr. Olympia Amateur Asia(Local) bikini fitness 163+ 3rd place
Bodybuilding 2017 IFBB Mr. Olympia Amateur Asia bikini fitness 163+ top 10
Bodybuilding 2018 Chiayi cup bikini fitness 163+ 1st place
Bodybuilding 2018 IFBB Portugal Diamond Cup bikini fitness 163+ 5th place
Bodybuilding 2018 Tainan cup open bikini fitness 163+ 1st place
Bodybuilding 2018 The Belt and Road IFBB Elite Ranking Taiwan representative
Bodybuilding 2018 National youth cup open bikini fitness 163+ 1st place
Bodybuilding 2019 National president cup open bikini fitness 163+ 1st place
Bodybuilding 2019 IFBB Asia Championship Woman's Bikini Fitness 5th place
4 time Taiwan Bodybuilding representative
Certificate
Training Pregnant and Postpartum Clients
Kettlebell Quest IKT Level 1
TRX STC
Singapore DZMR Certification
Fit- Physique Specialist Lv1+Lv2
CPR+AED
International Health and Fitness Institute elder care exercise trainer
certificate certification 在 Hot Emma Youtube 的最佳解答
Hot Emma
Instagram
➽https://www.instagram.com/lxxooemma/
Twitter
➽https://twitter.com/HotEmma3
Tumblr
➽https://www.tumblr.com/blog/hot-emma-blog
––––––––––––––––––––––––––––––
Rody
Instagram
➽ https://www.instagram.com/aaa_rody/
––––––––––––––––––––––––––––––
Experience:
Powerlifting 2015 Tainan cup52kg Total 2nd place
Powerlifting 2016 National cup 52kg Deadlift 3rd place
Bodybuilding 2016 National cup physique163+ 3rd place
Bodybuilding 2016 Taipei cup physique163+ 3rd place
Bodybuilding 2017 National president cup physique163+ 2nd place
Bodybuilding 2017 National youth cup open physique163+ 3rd place
Bodybuilding 2017 1st Fitness Factory cup invitation bikini fitness 163+ 2nd place
Bodybuilding 2017 Tainan cup open physique163+ 3rd place
Bodybuilding 2017 IFBB Mr. Olympia Amateur Asia(Local) bikini fitness 163+ 3rd place
Bodybuilding 2017 IFBB Mr. Olympia Amateur Asia bikini fitness 163+ top 10
Bodybuilding 2018 Chiayi cup bikini fitness 163+ 1st place
Bodybuilding 2018 IFBB Portugal Diamond Cup bikini fitness 163+ 5th place
Bodybuilding 2018 Tainan cup open bikini fitness 163+ 1st place
Bodybuilding 2018 The Belt and Road IFBB Elite Ranking Taiwan representative
Bodybuilding 2018 National youth cup open bikini fitness 163+ 1st place
Bodybuilding 2019 National president cup open bikini fitness 163+ 1st place
Bodybuilding 2019 IFBB Asia Championship Woman's Bikini Fitness 5th place
4 time Taiwan Bodybuilding representative
Certificate
Training Pregnant and Postpartum Clients
Kettlebell Quest IKT Level 1
TRX STC
Singapore DZMR Certification
Fit- Physique Specialist Lv1+Lv2
CPR+AED
International Health and Fitness Institute elder care exercise trainer
certificate certification 在 Gavin職場英文, profile picture - Facebook 的推薦與評價
Certificate 和Certification 的區別Certificate >通常與文件有關>如出生證明、結婚證明>結業證明>擁有某物的證明Certification >正式證實的動作>專業上或法律上的官方 ... ... <看更多>
certificate certification 在 What is the difference between "certificate" and "certification"? 的推薦與評價
A certificate is the actual object. I have a certificate of completion. This means you have something, typically a piece of paper or an ... ... <看更多>