oci-arcade

This was created to demonstrate a few things about Oracle Cloud Infrastructure in a "fun" way. There are different elements of the OCI that have been exercised that will be discussed here.

This borrows a couple of open-source javascript games to extends and play with.

• Space Invaders - https://github.com/lukegreaves5/invaders404
• Pacman - https://github.com/masonicGIT/pacman

This is a rought set of notes to get this up and running.

Branches

There's a number of branches that exist for the purposes of terraform using https://github.com/jlowe000/oci-arcade-tf.

• master - a version of the kafka / conherence implementation on arm64. (using 1 x A1.Flex arm64 VM)

Pre-Requisites

• Need an OCI Tenancy and this is built with a Always-Free Tier account in mind.
• Need an administrator access to the account (keeping it simple).

1. Get Stuff Prepared

• Create a compartment (and note the OCID)
• Note your tenancy namespace and OCID
• Note your user OCID
• Know which region you are deploying into
• Know which compute shape and source-image to deploy compute
• Know whether you want to run a free-tier instance of the database
• Create a SSH Key (ie using puttygen or ssh-keygen)
• Define an admin password for ADW
• Know where you want to kafka events to be sent to (can be retargeted to a different kafka cluster)

Here are some references to help

• These instructions were originally built / tested with Oracle-Linux-7.8 image. Further testing has been conducted with:
  • Oracle-Linux-7.9 (arm64)
  • Oracle-Linux-8.4 (x86 and arm64)
  • Canonical-Ubuntu-20.04 (x86 and arm64)
  • Oracle-Linux-8.5 (arm64)
• The tenancy OCID and user OCID are used for the automation using the Oracle APIs - here is a description of where in the OCI console to find this information - https://docs.oracle.com/en-us/iaas/Content/API/Concepts/apisigningkey.htm#five
• The SSH key is a common element to infrastructure so you can log into the compute - use ie puttygen or ssh-keygen - https://docs.oracle.com/en-us/iaas/Content/Compute/Tasks/managingkeypairs.htm#Managing_Key_Pairs_on_Linux_Instances
• The compute shape is used for the VM hosting the APIs as well as Oracle Functions (on docker). You can find out the different shapes here (VM.Standard.E2.1.Micro + VM.Standard.A1.Flex are the only shapes available as part of the Always-Free Tier) - https://docs.oracle.com/en-us/iaas/Content/Compute/References/computeshapes.htm

2. Start Provisioning ...

(This is different for the different variations above)

1. Create a VCN with a public subnet
2. Create an ADW instance
3. Create 1 A1.Flex compute instance in the public subnet (for the purposes of this README - one will be referred to as arcade-web)
4. Create an object storage bucket that is public
5. On arcade-web:
   1. Install git, docker, docker-compose, pip, Oracle Cloud CLI, Oracle Instant Client
   2. Update the firewall with 8080/tcp, 8081/tcp
   3. Create an overlay network called arcade_network
   4. Create an oracle user
   5. More to come ...
6. On arcade-web (as user):
   1. Build / Run kafka cluster
   2. Create a keys for the OCI API Signing Keys.
   3. Configure OCI CLI with a profile to point to your tenancy
   4. Download the ADW wallet and configure.
   5. Create a database user and run the following scripts.
      • infra/db/init.sql
      • apis/score/db/init.sql
      • apis/events/db/init.sql
      • apis/users/db/init.sql
      • apis/users/db/init-crm-app.sql
      • apis/users/db/init-crm-config.sql
   6. Create a dockerfile from containers/web/api-score.Dockerfile.template
   7. Build / Run kafka events
      • git clone https://github.com/wurstmeister/zookeeper-docker
   8. Build and Run api-score NodeJS server
   9. Upload games to object storage (if user api-key is enabled)
   10. More to come ...

(I'm reverse engineering these steps from the Terraform project).

• Note:
  • In an Always-Free Tier, you make get issues when you "Apply" because (these are the common ones I found):
    • There can only be 2 x VCN allowed in the tenancy.
    • There can only be 2 x E2.1.Micro VM instances, 4 x A1.Flex VM instances and 2 x Autonomous Database instances.
  • Need to "accept" exception in browser for the API calls (https://:8081/event) - Without this step, API calls from game will fail with CERT exception
  • If you are wanting to "Destroy" the stack, you need to delete the folders in the oci-arcade bucket before running the Terraform destroy activity. Otherwise, the bucket will fail to be destroyed. You can delete the folders which will delete the underlying objects.