zopen: Installing

My z/OS did not have access to the internet, so it could not the default commands to download zopen from the internet.

The instructions here are pretty clear, use that document and this document together.

I created a ZFS with space 6000 MB and mounted it as /u/zopen. (I think you need about 1700 MB to install it, so mine was over allocated).

I used https://github.com/zopencommunity/metaport/releases/tag/DEV_metaport_3853.

This gives a curl statement curl -o meta-new_installer.20251030_160947.zos.pax.Z… which is very long and has the untar commands at the tail end.

I used the command

curl -o meta-new_installer.20251030_160947.zos.pax.Z -L https://github.com/zopencommunity/metaport/releases/download/DEV_metaport_3853/meta-new_installer.20251030_160947.zos.pax.Z 

to download the paxed file to my Linux machine.

Upload it in binary to z/OS. The paxed file need about 105 MB on z/OS.

You need a userid with write access to /u/zopen.

cd /u/zopen
pax -rf meta-new_installer.20251030_160947.zos.pax.Z
cd meta-new_installer 
. ./.env
zopen init

It reported

During this operation, up to 291.162M of disk space will be required.
After this operation, 206.518M of disk space will be used.

After the install the command df -P /u/zopen showed it was 24% ( of 6000 MB) – and 2871046 512 byte blocks ( = 1401 MB). So using a file system with 1700 MB should be enough space to install it.

I edited my .profile file to add

 . /u/zopen//etc/zopen-config --override-zos-tools 

Internet access

I now have access from my z/OS to the internet, but do not have DNS set up. See How to get out to the internet. SNAT, DNAT and MASQUERADE and Problems getting out of z/OS to the outside world, unknown host.
I configured my /etc/hosts to include

#IPAddress             Hostname   alias 
151.101.128.223        pypi.org    pip 
151.101.192.223        pypi.org    pip 
151.101.192.223        files.pythonhosted.org   pipfiles 
20.26.156.215          github.com 
151.101.128.81         bbc.co.uk 
151.101.1.91           curl.se 
185.199.110.133        raw.githubusercontent.com 
185.199.110.133        release-assets.githubusercontent.com 

and restarted the resolver.