Questions[zypper](server)

I'm looking at a reliable way to find how many installed packages I have on my OpenSUSE Leap 15.3 system. I tried:

# number of available packages in the repos
vm-admin:~ # zypper se -s | wc -l
55800

# number of installed packages from the repos
vm-admin:~ # zypper se -si | wc -l
1490

# number of installed packages?
vm-admin:~ # rpm -qa | wc -l
1091

# number of available packages?
vm-admin:~ # pkcon get-packages | grep Available | wc -l
51058

# number of installed packages?
vm-admin:~ # pkcon get-packages | grep Installed | wc -l
1086

What's the difference between these commands commands?

I created a suse linux enterprise 15 vm in GCP. When I try to install anything it gives the following error.

I searched a lot but couldn't find default package repo for suse.

test-suse:/etc/zypp/repos.d # zypper refresh --services
There are no enabled services defined.
Use 'zypper addservice' or 'zypper modifyservice' commands to add or enable services.
Warning: There are no enabled repositories defined.
Use 'zypper addrepo' or 'zypper modifyrepo' commands to add or enable repositories.

Which is default repo for suse linux enterprise? I only want open source softwares like git, ansible etc.

Thanks in Advance.

My application is able to run on OperatingSystem 3 and on OperatingSystem 4. OS 4 stopped shipping OpenSSL 1.0 in favour of 1.1 (as should be), while OS 3 is still on OpenSSL 1.0. My application links fine against either, but a build for 3 cannot run on 4, nor can a 4 build run on OS 3. This is no problem: I have built separate packages for both OS's, and both work fine against their own OpenSSL versions.

OperatingSystem uses Zypper and RPM for their packages, and crucially, it is customary to host RPMs in one single "user repository".

My current strategy was to append a dist tag, not unlike Fedora's approach: application-0.6.0-0.os3 and application-0.6.0-0.os4, but both OS3 and OS4 want to install the os4 version. I used these Requires statements, adapting for OS versions:

Requires: os-version < 4.0 
Requires: os-version >= 3.0

and os-version is a pre-existing meta-package.

At this point, I'm unsure what to try (except to create a second "user repository", which would be a trivial but "ugly" solution in a sense).

Do we have any options to apply security patches only with Zypper ansible module for suse linux server. We don't want to use shell or command module and incorporate the command.

Equivalent command shell: zypper patch --category=security

End state. I want to reformat my / partition, reinstall opensuse tumbleweed, and have the same packages installed then as now.

Problem. I made what appears to be a poor choice, formatting the root filesystem as btrfs. The 20 GB I had for it was plenty previously with, say, ext3, but I can't keep up with the snapshot management with snapper with the large number of updates tumbleweed does.

Partial success. I can export my repository list with sudo zypper lr -u --export repo.list, and add that back to a fresh install with sudo zypper addrepo repo.list. I can export a list of installed pakcages with sudo zypper search --installed-only > installed.packages or rpm -qa | sort.

But I don't know how to install packages from a list, or generate a list of packages that can be used by opensuse at distribution install time.

Edit: autoyast may be the way to go, but is more heavyweight than I was looking for.