NOTE: this server is no longer in use, we use Shardium private TypeScript stack now

Welcome, my dude

ShardCore = our main JVM server for our page, also basically our VPS idk

this also includes notes for setting up the whole vps

pls visit -> shardbytes.com (if it's not down) ( it probably is lmao )

Based on Javalin, KMongo, Thymeleaf, Angular and other weird things which apparently seem popular in web industry and I like them lmao. Writen with love, tears and Kotlin <3.

Notes

• To run server one needs to specify configuration in config.json
  • ( or specify java argument with config file path in ./run )
  • ( see configTemplate.json )
  • run server by executing run command from anywhere

Create "static" and "logs" directories because the server serves them statically (or Javalin will rage)

deploy ?

• use Jenkins faggt

Service

• see shardcore.service, place in /etc/systemd/system and use ->
  • start/restart/stop -> sudo systemctl start/restart/stop shardcore
  • logs tail -> sudo journalctl -f -u shardcore
  • last 100 lines of logs ? -> sudo journalctl -n 100 --no-pager -u shardcore

RECONFIGURE FIREWALL PORTFORWARDING

• https://linuxacademy.com/howtoguides/posts/show/topic/11630-internal-port-forwarding-on-linux-using-the-firewall

• so we dont run java with sudo

• ufw rules -> /etc/ufw/before.rules ( !! to top of file )

  *nat
  :PREROUTING ACCEPT [0:0]
  -A PREROUTING -p tcp --dport 443 -j REDIRECT --to-port 10443
  -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 10080
  COMMIT
  

enable build shields for readme in Jenkins ?

• https://wiki.jenkins.io/display/JENKINS/Role+Strategy+Plugin
• new role anonymous for job, add job name to pattern, set View-Status, assign to Anonymous user in Assign Roles
• then install and use build status plugin https://plugins.jenkins.io/embeddable-build-status

Setup gradle

• get gradle bin
• extract in /opt/gradle or something so bin is in there
• ln-s that faggt to /usr/local/bin

Jenkins setup and stuff

• install https://wiki.jenkins.io/display/JENKINS/Installing+Jenkins+on+Ubuntu
• setup with 8080 (open port ufw)
• get access to jenkins linuxaccount (maybe same password as setup ?)
• setup SSL certificate (Java keystore .jks) -> edit /etc/default/jenkins -> replace last line : JENKINS_ARGS="--webroot=/var/cache/$NAME/war --httpPort=-1 --httpsPort=10099 --httpsKeyStore=/var/lib/jenkins/jenkins.jks --httpsKeyStorePassword=<password>"
• ( add jenkins.jks ssl certificate to /var/lib/jenkins directory and change password here)
• reboot or something, jenkins should be running with SSL on port 10099

Make Jenkins keep Gradle daemon -> but you will do fine by disabling it

• without daemon it takes only like 30s for one build so better disable it so it doesnt eat all the ram, (https://marschall.github.io/2016/08/06/disabling-gradle-daemon.html)
• for some weird reason Jenkins now kills gradle daemon after job is complete
• to keep the Gradle daemon, we need to tel Jenkins to not kill processes
• instead of Gradle plugin, use execute shell script:

  BUILD_ID=dontKillMe
  gradle build