Difference between revisions of "Clusters in CNM Farms"
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| − | [[File:Cnm-digital.png|400px|thumb|right|[[CNM Cyber]]]][[Clusters | + | [[File:Cnm-digital.png|400px|thumb|right|[[CNM Cyber]]]][[Clusters in the Farms]] (hereinafter, the ''Lectio'') is the [[lectio|lesson part]] of the '''[[Cloud Foundation Essentials]]''' [[lesson]] that introduces its participants to [[CNM Cloud]]. This ''lesson'' belongs to the [[Introduction to CNM Cloud]] session of the [[CNM Cyber Orientation]]. |
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===Key terms=== | ===Key terms=== | ||
:'''[[CNM Cloud Foundation]]'''. The combination of [[computing server]]s that host [[CNM Cloud]], as well as those parts of the cloud that are provisioned to run [[serverless]] systems.<div style="background-color:#efefef; padding: 5px; margin: 15px;"> | :'''[[CNM Cloud Foundation]]'''. The combination of [[computing server]]s that host [[CNM Cloud]], as well as those parts of the cloud that are provisioned to run [[serverless]] systems.<div style="background-color:#efefef; padding: 5px; margin: 15px;"> | ||
| − | :*'''[[WorldOpp Federated | + | :*'''[[WorldOpp Federated Farm]]'''. The [[computing server]] that hosts the [[software application]]s that [[WorldOpp Middleware]] powers. The [[CNM Cloud Next]] is one of the [[CNM Cloud Foundation]]. |
| − | :*'''[[CNM Cloud Next]]'''. The [[computing server]] that hosts those non-federated [[end-user application]]s of [[CNM Cyber]] that the [[CNM Cyber Team]] administers. The ''Server'' is located at the [http://167.71.244.79 167.71.244.79] [[IP address]]. The [[CNM Cloud Next]] are ones of the [[CNM Cloud Foundation]]. Another server, the [[CNM EndUser | + | :*'''[[CNM Cloud Next]]'''. The [[computing server]] that hosts those non-federated [[end-user application]]s of [[CNM Cyber]] that the [[CNM Cyber Team]] administers. The ''Server'' is located at the [http://167.71.244.79 167.71.244.79] [[IP address]]. The [[CNM Cloud Next]] are ones of the [[CNM Cloud Foundation]]. Another server, the [[CNM EndUser Farm]], hosts the set of [[CNM app]]s that is identical to [[CNM Cloud Next]]' set. |
| − | :*'''[[CNM HandsOn | + | :*'''[[CNM HandsOn Farm]]'''. The [[computing server]] of [[CNM Cloud Foundation]] that the [[CNM Cyber Team]] administers. |
| − | :*'''[[CNM EndUser | + | :*'''[[CNM EndUser Farm]]'''. The [[computing server]] that hosts those non-federated [[end-user application]]s of [[CNM Cyber]] that the [[WorldOpp Fellow Staff]] administers. The ''Server'' is located at the [http://159.89.230.212 159.89.230.212] [[IP address]]. The [[CNM EndUser Farm]] is one of the [[CNM Cloud Foundation]]. Another server, the [[CNM Cloud Next]], host the set of [[CNM app]]s that is identical to Fellow Server's set. The difference is that Fellow Server's apps are used for [[career service]]s, while Next Server's ones are used for [[hands-on training]].</div> |
===Script=== | ===Script=== | ||
:Backups are used to restore the data, but they cannot prevent work interruptions. Imagine that you are in the middle of exam or another project at [[CNM Cloud]]. If its [[computing server]] fails, you should wait until the latest backup is restored. Plus, your latest data, most likely, would be lost. | :Backups are used to restore the data, but they cannot prevent work interruptions. Imagine that you are in the middle of exam or another project at [[CNM Cloud]]. If its [[computing server]] fails, you should wait until the latest backup is restored. Plus, your latest data, most likely, would be lost. | ||
| − | :To make [[CNM Cloud]] stable, [[WorldOpp Federated | + | :To make [[CNM Cloud]] stable, [[WorldOpp Federated Farm|WorldOpp Federated]], [[CNM EndUser Farm|CNM EndUser]], and [[CNM HandsOn Farm|HandsOn Farm]] are run in [[computing cluster]]s. Each cluster includes two or more identically-functioning ''servers''. If one of them fails or is not available, another would continue running. This feature of the [[CNM Cloud Foundation]] is called [[redundancy]]. |
:Special [[load balancer]]s make sure that the ''servers'' in one ''cluster'' work synchronously to cover for each other and the ''Cloud'' users access the ''server'' that serves them best. | :Special [[load balancer]]s make sure that the ''servers'' in one ''cluster'' work synchronously to cover for each other and the ''Cloud'' users access the ''server'' that serves them best. | ||
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===Lectio quiz=== | ===Lectio quiz=== | ||
:The answer is recorded for the lectio completion purpose: | :The answer is recorded for the lectio completion purpose: | ||
| − | :*[[CNM Cabin]] is hosted by:<ol type="a"><li>[[CNM Cloud Next]]</li><li>[[WorldOpp Federated | + | :*[[CNM Cabin]] is hosted by:<ol type="a"><li>[[CNM Cloud Next]]</li><li>[[WorldOpp Federated Farm]]</li><li>[[CNM EndUser Farm]]</li><li>[[CNM HandsOn Farm]]</li><li>None of the other answers is correct.</li></ol> |
| − | :*Which statement below is correct:<ol type="a"><li>[[CNM Cyber]] may include three identical [[CNM app]]s.</li><li>While taking this course, you work on the [[CNM EndUser | + | :*Which statement below is correct:<ol type="a"><li>[[CNM Cyber]] may include three identical [[CNM app]]s.</li><li>While taking this course, you work on the [[CNM EndUser Farm]].</li><li>Future administrators of [[CNM app]]s get [[hands-on training]] at the [[CNM Cloud Next]].</li><li>All of the other substantive answers are correct.</li><li>None of the other answers is correct.</li></ol> |
===Placement entrance exam=== | ===Placement entrance exam=== | ||
Revision as of 01:52, 7 October 2020
Clusters in the Farms (hereinafter, the Lectio) is the lesson part of the Cloud Foundation Essentials lesson that introduces its participants to CNM Cloud. This lesson belongs to the Introduction to CNM Cloud session of the CNM Cyber Orientation.
Content
The predecessor lectio is Data in the Foundation.
Key terms
- CNM Cloud Foundation. The combination of computing servers that host CNM Cloud, as well as those parts of the cloud that are provisioned to run serverless systems.
- WorldOpp Federated Farm. The computing server that hosts the software applications that WorldOpp Middleware powers. The CNM Cloud Next is one of the CNM Cloud Foundation.
- CNM Cloud Next. The computing server that hosts those non-federated end-user applications of CNM Cyber that the CNM Cyber Team administers. The Server is located at the 167.71.244.79 IP address. The CNM Cloud Next are ones of the CNM Cloud Foundation. Another server, the CNM EndUser Farm, hosts the set of CNM apps that is identical to CNM Cloud Next' set.
- CNM HandsOn Farm. The computing server of CNM Cloud Foundation that the CNM Cyber Team administers.
- CNM EndUser Farm. The computing server that hosts those non-federated end-user applications of CNM Cyber that the WorldOpp Fellow Staff administers. The Server is located at the 159.89.230.212 IP address. The CNM EndUser Farm is one of the CNM Cloud Foundation. Another server, the CNM Cloud Next, host the set of CNM apps that is identical to Fellow Server's set. The difference is that Fellow Server's apps are used for career services, while Next Server's ones are used for hands-on training.
Script
- Backups are used to restore the data, but they cannot prevent work interruptions. Imagine that you are in the middle of exam or another project at CNM Cloud. If its computing server fails, you should wait until the latest backup is restored. Plus, your latest data, most likely, would be lost.
- To make CNM Cloud stable, WorldOpp Federated, CNM EndUser, and HandsOn Farm are run in computing clusters. Each cluster includes two or more identically-functioning servers. If one of them fails or is not available, another would continue running. This feature of the CNM Cloud Foundation is called redundancy.
- Special load balancers make sure that the servers in one cluster work synchronously to cover for each other and the Cloud users access the server that serves them best.
- No user, but the Foundation administrators, can detect that feature. Any cluster acts as a single computing server; only an emergency can possibly help to identify the Cloud's redundancies.
- To accommodate experiments of the CNM Cyber Team, CNM Cloud Next is more flexible than the other, more conservative, parts. Depending on the experiments' nature, this part of the Foundation may have any number of server clusters or no clusters at all.
CNM Cloud Online is the successor lectio.
Questions
Lectio quiz
- The answer is recorded for the lectio completion purpose:
- CNM Cabin is hosted by:
- CNM Cloud Next
- WorldOpp Federated Farm
- CNM EndUser Farm
- CNM HandsOn Farm
- None of the other answers is correct.
- Which statement below is correct:
- CNM Cyber may include three identical CNM apps.
- While taking this course, you work on the CNM EndUser Farm.
- Future administrators of CNM apps get hands-on training at the CNM Cloud Next.
- All of the other substantive answers are correct.
- None of the other answers is correct.
- CNM Cabin is hosted by:
