Cloud platforms. T Mobile Systems Programming

Transcription

1 Cloud platforms T Mobile Systems Programming

2 Agenda 1. Motivation 2. Different types of cloud platforms 3. Popular cloud services 4. Open-source cloud 5. Cloud on this course 6. Mobile Edge Computing 7. Some useful tools, Slides based on lecture by Kimmo Ahokas (used with permission) 2

3 Motivation Your mobile app might need backend Focus is on mobile end, so time used working on backend should be minimized Cloud platforms are mostly easy to use Get your back-end running in hours No need to get own servers etc. High scalability when your app grows 3

4 2. Types of cloud platforms

5 Software-as-a-Service (SaaS) (Web) Application offered as service You can not really customize anything Easy to use Examples: Gmail, Google Drive, Office 365 Probably not useful model on this course (as a backend for your app)

6 Platform-as-a-Service (PaaS) Software building platform offered as a service Build you app using tools offered by platform Platform automates deploying and scaling Possible vendor lock-in More freedom than with SaaS Examples: Google App Engine, Heroku Probably useful type on this course 6

7 Infrastructure-as-a-Service (IaaS) Service offers infrastructure You install everything you need Virtual machines Works for almost any kind of application More freedom than with PaaS Examples: Amazon AWS, Microsoft Azure, Google Compute Engine, OpenStack Useful on this course 7

8 3. Popular cloud services

9 Heroku (PaaS) Supports multiple different programming languages Automatic scaling for app Database as a service You can get started for free DEMO: Node.js backend running in minutes

10 Google App Engine (PaaS) Supports Python, Java, PHP and GO Cloud SQL database You can get started for free 10

11 Amazon AWS (IaaS) Virtual machines, storage, database, dns, cdn You configure everything yourself Scalability (mostly) designed by you Multiple locations around the world Free tier for 12 months after signup 11

12 Amazon AWS Demo - Cloud Gaming 12

13 Google Compute Engine (IaaS) Virtual machines, storage, load balancing Scalability (mostly) designed by you Multiple locations around the world Free tier to get you started 13

14 Microsoft Azure (PaaS &IaaS).NET, Java, PHP, Node.js, Python, virtual machines, storage, database, also other Microsoft stuff Auto scaling for managed apps Free tier to get you started 14

15 4. Open-source cloud

16 Open-source cloud systems Run cloud applications on your own hardware Easily manage virtual machines, networking, storage Apache Cloudstack OpenNebula Eucalyptus OpenStack 16

17 OpenStack 17

18 5. Cloud on this course

19 What you can use? Any cloud service with free tier Or any paid system if you are willing to pay it yourself If none of the free alternatives is not suitable for your group contact course staff If you have own server, you can use it Virtual Servers can be set up by Niksula IT as a last resort MEC teams will get VMs running in the T-building base station 19

20 6. Mobile Edge Computing

21 MEC Mobile Edge Computing Cloud-computing capabilities brought to the edge of the (mobile) network Implemented in the cellular base stations (and the core network) Ultra low (one hop) latency Image source & copyright Nokia Networks 21

22 Why at the mobile edge? Benefits for user: Benefits for network operator: Content at the place where people connect New low-latency applications Process data at its source before it gets big New ecosystem, sell resources in RAN for third party developers Save bandwidth by content caching 22

23 NetLeap Network A live LTE test network in collaboration with Nokia Network coverage throughout Otaniemi Free access available for students Sim cards available from main building (IT Service Desk) RACS (Radio Access Cloud Server) integrated into a base station (NetLeap) in the T-building 23

24 RACS (Radio Access Cloud Server) MEC prototype from Nokia, installed in T-building s Netleap base station Applications run in KVM virtual machines MEC groups will get ssh access to VMs Image source & copyright Nokia Networks 24

25 Application types Terminating application Acts as a server towards UEs Unique IP address Transparent/pass-through app Uplink or Downlink traffic is intercepted Intercepted packets can be monitored / modified etc. 25

26 Sample Applications Augmented reality (AR) applications Local content served from local RACS Content at special events and locations Mobile edge video analytics Image processing at the source before the data gets big Edge caching 26

27 7. Some useful tools

28 Why bother with new tools? Good tools make your work easier Coding is easy, communication is not Working as a team requires good communication Need easy ways to share code, assign tasks to team members, update others on progress etc. 28

29 Version control Store you code using some version control system Niksula GitLab: Hosted by school Private repositories You need Niksula account (you might have it already), easy to get GitHub: Popular choice Paid private repositories BitBucket: (git + mercurial) Kiln: (git + mercurial) And many more 29

30 Task / issue tracking What to do, when to do it and who does it? Issue tracking feature built in GitLab, GitHub Refer issues from from git commit messages Trello: General project management, works for coding as well And many more (hosted) services 30

31 Messaging I bet you don t want to receive s from your team daily! Information gets lost, difficult to manage Facebook groups hide information, don t use those! Instant messaging Google hangouts, IRC, Facebook messenger etc. Flowdock: Designed for software development teams Unified inbox and team chat Get information from git, trello, twitter, , 10 s more Free for students and teams with at most 5 members 31

32 Help with back-end No dedicated support, but you can still ask me I try to help if I can teemu.kamarainen@aalto.fi Include course code in header! Try to include as much information as possible What were you trying to do? Complete error message with stack trace Link to source code would be nice 32

33 Questions?