Issue
Im have problem postgresql-10 in kali linux
│
│ The PostgreSQL version 10 is obsolete, but the server or client packages
│ are still installed. Please install the latest packages (postgresql-11
│ and postgresql-client-11) and upgrade the existing clusters with
│ pg_upgradecluster (see manpage).
│
│ Please be aware that the installation of postgresql-11 will
│ automatically create a default cluster 11/main. If you want to upgrade
│ the 10/main cluster, you need to remove the already existing 11 cluster
│ (pg_dropcluster --stop 11 main, see manpage for details).
│
│ The old server and client packages are no longer supported. After the
│ existing clusters are upgraded, the postgresql-10 and postgresql-client-10 packages should be removed.
│
│ Please see /usr/share/doc/postgresql-common/README.Debian.gz for
│ details.
How to fix it? Capture screenshoot: https://imgur.com/Xq0mztb
Solution
You can apt-get remove postgresql-10 and postgresql-client-10, making the warning go away. You should first install the postgresql-11 packages and migrate your databases if you use any. You can install the postgresql-11 using apt-get install. Migrating the db could be done by following the instructions here: https://www.postgresql.org/docs/10/upgrading.html
Answered By - g_bor Answer Checked By - Pedro (WPSolving Volunteer)