Re: postgresql15-contrib installation on Amazon Linux 2 fails on Python shared lib dependency

On Thu, Apr 27, 2023 at 8:51 AM Max Kremer <mkremer(at)trialfire(dot)com> wrote:

>
>
>
> I'm using an EC2 on AWS running Amazon Linux 2. I'm trying to install
> Postgresql version 15 server along with the contrib libraries for various
> extension.
>
> This is how I installed Posgres15
>
> sudo rpm --import https://yum.postgresql.org/RPM-GPG-KEY-PGDG-15
> sudo yum update -y
> sudo yum install -y postgresql15-server postgresql15-contrib
>
> PostgreSQL server installs correctly but fails during the contrib package
> install due to a dependency on Python. I am able to install just the server
> alone:
>
> sudo yum install -y postgresql15-server
>
> Here is the error I get when installing postgresql15-contrib:
>
> [ec2-user(at)ip-172-31-51-199 ~]$ sudo yum install -y postgresql15-contrib Loaded plugins: dkms-build-requires, extras_suggestions, langpacks, priorities, update-motd225 packages excluded due to repository priority protectionsResolving Dependencies--> Running transaction check---> Package postgresql15-contrib.x86_64 0:15.2-1PGDG.rhel7 will be installed--> Processing Dependency: libxslt.so.1(LIBXML2_1.0.22)(64bit) for package: postgresql15-contrib-15.2-1PGDG.rhel7.x86_64--> Processing Dependency: libxslt.so.1(LIBXML2_1.0.18)(64bit) for package: postgresql15-contrib-15.2-1PGDG.rhel7.x86_64--> Processing Dependency: libxslt.so.1(LIBXML2_1.0.11)(64bit) for package: postgresql15-contrib-15.2-1PGDG.rhel7.x86_64--> Processing Dependency: libxslt.so.1()(64bit) for package: postgresql15-contrib-15.2-1PGDG.rhel7.x86_64--> Processing Dependency: libpython3.6m.so.1.0()(64bit) for package: postgresql15-contrib-15.2-1PGDG.rhel7.x86_64--> Running transaction check---> Package libxslt.x86_64 0:1.1.28-6.amzn2 will be installed---> Package postgresql15-contrib.x86_64 0:15.2-1PGDG.rhel7 will be installed--> Processing Dependency: libpython3.6m.so.1.0()(64bit) for package: postgresql15-contrib-15.2-1PGDG.rhel7.x86_64--> Finished Dependency ResolutionError: Package: postgresql15-contrib-15.2-1PGDG.rhel7.x86_64 (pgdg15)
> Requires: libpython3.6m.so.1.0()(64bit)
> Available: python3-libs-3.6.2-3.amzn2.0.2.x86_64 (amzn2extra-python3)
> libpython3.6m.so.1.0()(64bit)
> Available: python3-libs-3.6.2-3.amzn2.0.3.x86_64 (amzn2extra-python3)
> libpython3.6m.so.1.0()(64bit)
> Installed: python3-libs-3.7.16-1.amzn2.0.2.x86_64 (@amzn2-core)
> ~libpython3.7m.so.1.0()(64bit)
> Available: python3-libs-3.7.0-0.12.b2.amzn2.0.2.x86_64 (amzn2-core)
> ~libpython3.7m.so.1.0()(64bit)
> Available: python3-libs-3.7.0-0.16.b3.amzn2.0.1.x86_64 (amzn2-core)
> ~libpython3.7m.so.1.0()(64bit)
> Available: python3-libs-3.7.0-0.20.rc1.amzn2.0.1.i686 (amzn2-core)
> Not found
> Available: python3-libs-3.7.0-0.20.rc1.amzn2.0.2.i686 (amzn2-core)
> Not found
> Available: python3-libs-3.7.1-9.amzn2.0.1.i686 (amzn2-core)
> Not found
> Available: python3-libs-3.7.2-4.amzn2.0.1.i686 (amzn2-core)
> Not found
> Available: python3-libs-3.7.3-1.amzn2.0.1.i686 (amzn2-core)
> Not found
> Available: python3-libs-3.7.3-1.amzn2.0.2.i686 (amzn2-core)
> Not found
> Available: python3-libs-3.7.4-1.amzn2.0.1.i686 (amzn2-core)
> Not found
> Available: python3-libs-3.7.4-1.amzn2.0.2.i686 (amzn2-core)
> Not found
> Available: python3-libs-3.7.4-1.amzn2.0.3.i686 (amzn2-core)
> Not found
> Available: python3-libs-3.7.4-1.amzn2.0.4.i686 (amzn2-core)
> Not found
> Available: python3-libs-3.7.6-1.amzn2.0.1.i686 (amzn2-core)
> Not found
> Available: python3-libs-3.7.8-1.amzn2.0.1.i686 (amzn2-core)
> Not found
> Available: python3-libs-3.7.9-1.amzn2.0.1.i686 (amzn2-core)
> Not found
> Available: python3-libs-3.7.9-1.amzn2.0.2.i686 (amzn2-core)
> Not found
> Available: python3-libs-3.7.9-1.amzn2.0.3.i686 (amzn2-core)
> Not found
> Available: python3-libs-3.7.10-1.amzn2.0.1.i686 (amzn2-core)
> Not found
> Available: python3-libs-3.7.15-1.amzn2.0.1.i686 (amzn2-core)
> Not found
> Available: python3-libs-3.7.15-1.amzn2.0.2.i686 (amzn2-core)
> Not found
> Available: python3-libs-3.7.16-1.amzn2.0.1.i686 (amzn2-core)
> Not found
> You could try using --skip-broken to work around the problem
> You could try running: rpm -Va --nofiles --nodigest
> [ec2-user(at)ip-172-31-51-199 ~]$
>
> Python is definitely installed on the server and I can verify the version
> like this:
>
> [ec2-user(at)ip-172-31-51-199 ~]$ python3 -V
> Python 3.7.16
> [ec2-user(at)ip-172-31-51-199 ~]$
>
> And here is what I see when looking for the Python shared lib:
>
> [ec2-user(at)ip-172-31-51-199 ~]$ sudo locate libpython
> /home/ec2-user/timp/Python-3.6.12/libpython3.6m.a
> /home/ec2-user/timp/Python-3.6.12/Tools/gdb/libpython.py
> /usr/lib64/libpython2.7.so
> /usr/lib64/libpython2.7.so.1.0
> /usr/lib64/libpython3.7m.so.1.0
> /usr/lib64/libpython3.8.so.1.0
> /usr/lib64/libpython3.so
> /usr/lib64/python2.7/config/libpython2.7.so
> /usr/local/lib/libpython3.6m.a
> /usr/local/lib/python3.6/config-3.6m-x86_64-linux-gnu/libpython3.6m.a
> /usr/share/systemtap/tapset/libpython2.7-64.stp
> [ec2-user(at)ip-172-31-51-199 ~]$
>
>
> What am I missing? Why won't the postgresql15-contrib install find my
> python shared lib? Does it have to be python3.6 only? Is 3.7, 3.8 no good?
>
>
>
This is not actually answering your question, but you should know that the
PostgreSQL yum repository does not officially support Amazon Linux (as can
be seen on the list of available distributions). This sounds like exactly
the kind of problem that could show up on an unsupported distributions.

I'd recommend you try a supported distribution -- if nothing else then just
to initially prove that the problem is with Amazon Linux and not something
else.

> ᐧ
>

--
Magnus Hagander
Me: https://www.hagander.net/ <http://www.hagander.net/>
Work: https://www.redpill-linpro.com/ <http://www.redpill-linpro.com/>