s390x

About s390x

• Dave's Garage at 2023-10: Why Do Mainframes Still Exist? What's Inside One? 40TB, 200+ Cores, AI, and more! https://www.youtube.com/watch?v=ouAG4vXFORc
• https://en.wikipedia.org/wiki/Linux_on_IBM_Z
• FLOSS 564 Interview about Open Mainframe Project
• Open Mainframe Project
• LinuxOne Community Cloud
• SWLUG Talk - Linux on the IBM Z mainframe platform
• https://wiki.qemu.org/Documentation/Platforms/S390X
• https://arstechnica.com/information-technology/2023/07/the-ibm-mainframe-how-it-runs-and-why-it-survives/
• https://sdl-hercules-390.github.io/html/

From xet7, other non-WeKan Open Source at s390x

Other non-WeKan Open Source projects xet7 tried to build at s390x:

• Works:
  • TSC platform game, C++ https://secretchronicles.org/en/news/2020/11/16/tsc-for-s390x-available/
  • Darkest Hour halloween text adventure game, C89, xet7 ported to 30+ CPU/OS https://github.com/xet7/darkesthour
• Does not work yet:
  • V https://github.com/vlang/v/issues/18737
  • LLVM, Zig, Bun https://github.com/wekan/wekan-node20#trying-to-compile-llvm-for-zig-and-bun-at-s390x-fails
  • Deno, because Rust ring (a crypto dependency) does not support s390x https://github.com/wekan/wekan-node20#trying-to-compile-deno-for-s390x-fails

Ported by others, not xet7:

• PostreSQL https://news.ycombinator.com/item?id=38398305

From xet7, WeKan at s390x

• https://www.openmainframeproject.org/blog/2020/11/20/wekan-open-source-kanban-on-s390x

xet7, as maintainer of WeKan, got access to mainframe at IBM LinuxOne Community Cloud. Access to those servers is monitored, it's running on a real mainframe.

Previously xet7 had ssh access. At 2023-09 xet7 got web console access, and IBM bumped quota to 2 VMs with 8 GB of memory, 200 GB disk and 4 CPUs each. At web console it is possible to create and remove VMs, and select distro like RHEL/SUSE/Ubuntu. xet7 did do-release-upgrade to upgrade newest Ubuntu 23.10.

Download

• wekan-VERSION-s390x.zip at https://releases.wekan.team/s390x/

Installing MongoDB for s390x

This Snap package https://snapcraft.io/juju-db , created by Canonical, has MongoDB for various CPU architectures . It is internal package for Canonical's Juju service https://jaas.ai . Snap repo at https://github.com/juju/juju-db-snap and copy at https://github.com/wekan/mongodb-snap

Install Snap for your distro https://snapcraft.io/docs/installing-snapd

Then:

ssh yourserver

sudo dnf install nano

sudo reboot

sudo snap install juju-db

sudo snap refresh juju-db --channel=5.3/stable

sudo snap enable juju-db

sudo snap start juju-db

nano .bashrc

There add path to commands mongo, mongodump, mongorestore etc

export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/snap/juju-db/139/usr/lib/s390x-linux-gnu
export PATH="$PATH:/snap/juju-db/139/bin"

Save and exit: Ctrl-o Enter Ctrl-x

Exit ssh, and ssh to server again,

exit

ssh yourserver

Or alternatively just read new paths to mongo etc commands:

source .bashrc

Now MongoDB is at localhost port 27017. You connect to CLI with command:

mongo

RHEL 8

New info 2022-01-18:

1. Install snapd https://snapcraft.io/docs/installing-snap-on-red-hat

2. Reboot

3. Install MongoDB, so it will be at port 27017:

sudo snap install mongo36-configurable

4. Install WeKan s390x bundle from:

• Raspberry Pi
• https://releases.wekan.team/s390x/

Old info:

sudo yum -y update
sudo yum -y install git nano npm curl wget podman-docker openssl-devel libcurl-devel clang zip unzip
docker run --name wekan-db -d -p 127.0.0.1:27017:27017 mongo
sudo npm -g install n
sudo n 12.18.0  ## newest 12.x from https://nodejs.org
mkdir repos
cd repos
git clone https://github.com/wekan/wekan
cp wekan/start-wekan.sh .
nano start-wekan.sh
# Edit start-wekan.sh for ports and paths, so starts
# "node main.js" at "build" directory".
# Look for version number from https://releases.wekan.team/s390x/
wget https://releases.wekan.team/s390x/wekan-VERSION-s390x.zip
unzip wekan*s390x.zip
./start-wekan.sh

RHEL 7

Node.js LTS newest 12.x release for s390x can be downloaded from https://nodejs.org

MongoDB v4.x Community Server for s390x RHEL7 is at https://www.mongodb.com. For example files can be like these filenames:

• mongodb-org-mongos-4.2.3-1.el7.s390x.rpm
• mongodb-org-server-4.2.3-1.el7.s390x.rpm
• mongodb-org-shell-4.2.3-1.el7.s390x.rpm
• mongodb-org-tools-4.2.3-1.el7.s390x.rpm

Install

Installing is similar like at Raspberry Pi

You can start it with start-wekan.sh from https://github.com/wekan/wekan or add SystemD service.

Setup ROOT_URL like described at Settings

At wiki is also info about Caddy/Nginx/Apache etc.

Some related links also at Platforms

How this s390x bundle package was created for RHEL 7

1. Install Node.js
2. scp wekan-VERSION.zip bundle to s390x server, and unzip it
3. Clone and build Fibers, copy fibers to bundle, and zip bundle.

git clone https://github.com/laverdet/node-fibers
cd node-fibers
node build.js
cd ..
cp -pR /home/linux1/node-fibers/bin/linux-s390x-72-glibc bundle/programs/server/node_modules/fibers/bin/
zip -r wekan-VERSION-s390x.zip bundle