Contest Management System Docker Version

Edited version of Contest Managment System for ITTS E. Scalfaro

Main Website olimpiadi.francescomancuso.it

Credits

All credits to Dockerfile goes to @tico88612

Support

System	Support
Ubuntu 20.04	✅
Ubuntu 22.04	✅, Need to enable cgroup v1

Requirement

Enable cgroup v1 (Ubuntu 22.04)

Contest Management System is used ioi/isolate for sandbox, which is not supported cgroup v2 yet.

In Ubuntu 22.04, cgroup v1 default is not enabled. You need to enable it and reboot.

#!/bin/bash

echo 'GRUB_CMDLINE_LINUX_DEFAULT="${GRUB_CMDLINE_LINUX_DEFAULT} cgroup_enable=memory swapaccount=1 systemd.unified_cgroup_hierarchy=false systemd.legacy_systemd_cgroup_controller=false"' | sudo tee /etc/default/grub.d/70-cgroup-v1.cfg
sudo update-grub
sudo reboot

After that, you will need to check cgroup v1 is enabled.

mount | grep cgroup

This is success example output.

ubuntu@cms:~$ mount | grep cgroup
tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,size=4096k,nr_inodes=1024,mode=755,inode64)
cgroup2 on /sys/fs/cgroup/unified type cgroup2 (rw,nosuid,nodev,noexec,relatime,nsdelegate)
cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,name=systemd)
cgroup on /sys/fs/cgroup/pids type cgroup (rw,nosuid,nodev,noexec,relatime,pids)
cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpu,cpuacct)
cgroup on /sys/fs/cgroup/net_cls,net_prio type cgroup (rw,nosuid,nodev,noexec,relatime,net_cls,net_prio)
cgroup on /sys/fs/cgroup/rdma type cgroup (rw,nosuid,nodev,noexec,relatime,rdma)
cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset)
cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer)
cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory)
cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio)
cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices)
cgroup on /sys/fs/cgroup/hugetlb type cgroup (rw,nosuid,nodev,noexec,relatime,hugetlb)
cgroup on /sys/fs/cgroup/misc type cgroup (rw,nosuid,nodev,noexec,relatime,misc)
cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event)

Install Docker

Follow this manual to install Docker.

Installation

1. Clone this project (include submodules)

git clone --recursive https://github.com/FrancescooM/olimpiadicms-docker.git

2. If you want to change worker number, edit config/cms.conf and docker-compose.yml

3. Copy .env.example to .env and edit CMS_SECRET_KEY, CMS_ADMIN_PASSWORD, CMS_RANKING_PASSWORD etc. (Contest has not been created yet, don't touch CMS_CONTEST_ID before creating the contest.)

cp .env.example .env
nano .env # Edit .env

4. Build cms-base:latest image.

docker build -f images/cms-base/Dockerfile . -t cms-base:latest

5. Up all service

docker compose up -d

Reference project

• np-overflow/k8s-cms
• ioi/cms
• tico88612's Docker version