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I'm trying to install Postgis 2.1 on Centos 6.9 (and postgresql 9.5). I try to yum install it:

yum install postgis21_95

And get the error:

> Finished Dependency Resolution
Error: Package: gdal-libs-1.9.2-8.rhel6.x86_64 (pgdg-common)
           Requires: libgeotiff.so.2()(64bit)
 You could try using --skip-broken to work around the problem
 You could try running: rpm -Va --nofiles --nodigest

I have installed the package: "libgeotiff.x86_64 1.2.5-6.el6" but that doesn't seem to be the right one.

I have very little experience installing packages on linux. I did some web searches and didn't find an answer.

  1. What can I do to get it to properly install?

Alternatively: 2. If I don't need the geotiff functionality of postgis, can I safely skip this using "--skip-broken"?

Aaron Kreider
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    CentOS 6 has passed end of life. Upgrade to a supported Linux distribution. – Michael Hampton Sep 04 '21 at 11:29
  • Definitively! You really should not use CentOS 6 [anymore](https://endoflife.software/operating-systems/linux/centos). – Lutz Willek Sep 04 '21 at 12:56
  • People say the same thing about Drupal 4. But it works great for my blog! So should I go with Centos 7? Moving the data is going to be a chore (500 GB - 1 TB of tiny files). It's a low end server with a lot of files. – Aaron Kreider Sep 04 '21 at 20:51
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    I'll try to paraphrase gently: Drupal 4 was great software, just like CentOS 6 was a great operating system. However, it is simply no longer actualized, and thus inevitably security gaps are open. My professional opinion: Having such a system running on the internet is like playing Russian roulette with 6 bullets in the drum. My personal opinion: Of course, you are completely free to do so, but then you also have to live with the unpleasant consequences. (no offence) – Lutz Willek Sep 04 '21 at 22:36
  • Ok. I'm also going to try if I can get postgis installed on a new Centos 7 server. – Aaron Kreider Sep 04 '21 at 23:25
  • CentOS 7 already reached EOU on 2020-08-06 and will reach EOL on 2024-06-30. CentOS 8 will reach EOL on 2021-12-31. Assuming you don't want to upgrade too often, another Linux distribution which offers long [term support (LTS)](https://en.wikipedia.org/wiki/Long-term_support) is probably the better option. At the moment, [Debian](https://en.wikipedia.org/wiki/Debian) 11 (Bullseye) would be a good choice, as EOS is 2026 and even [ELTS](https://wiki.debian.org/LTS/Extended) is offered for Debian releases. – Lutz Willek Sep 05 '21 at 08:01

1 Answers1

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Additional packages from ​EPEL 6 (Extra Packages for Enterprise Linux) are required to fulfill requirements for GDAL. (so enable epel)

However, instead solving this installation challenge on a CentOS 6 installation in 2021, you really should consider upgrading the operating system.

Life is strange sometimes: In case there is a reason why upgrading the OS is not a achievable option, change your repository sources to use the archived versions, as end of 2020 all sources have been removed from mirror servers to reflect the end of life (EOL) status of CentOS6.

Lutz Willek
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  • I've got this epel package installed: epel-release-6-8.noarch I tried: yum --enablerepo="epel" install postgis21_95 and get the same error. When I do yum search epel-release it says "1594 packages excluded due to repository priority protections." Is that a problem? – Aaron Kreider Sep 04 '21 at 22:04
  • Update the repository URL, as described and linked in answer. You are using CentOS 6.9, so use `http://vault.centos.org/6.9/*`. (As already written, installing epel-release-6-8 does not help as end of 2020 all sources have been removed from mirror servers to reflect the EOL status of CentOS6.) – Lutz Willek Sep 04 '21 at 22:14
  • Ok, thanks! I followed the instructions in your link. Now I get: Package: gdal-libs-1.9.2-8.rhel6.x86_64 (pgdg-common) Requires: libnetcdf.so.6()(64bit) It seems like I might need netcdf 4.1.1 which has that file. So far I found 4.1.2 at rpmforge, but haven't found 4.1.1. – Aaron Kreider Sep 04 '21 at 22:56
  • There are netcdf packages in the EPEL repository. The command `yum list netcdf\*` will show you the choices available. – Lutz Willek Sep 04 '21 at 23:13
  • Ahh I think I needed to disable the rpmreforge.repo. So I did that and now the install worked! – Aaron Kreider Sep 04 '21 at 23:30