Hi all,
I'm installing postgres 9.6 in a CentOS 7 computer that already
has postgres v9.2 installed (version that comes with CentOS
installer) and I've seen the message of this mail's subject. It's
the second machine where I see it, but previous one was a
development server and I passed over it. But now I'm trying to
make a guide to take this procedure to a Production server. I
understand what this error is telling me, what I'm missing is if
this has or can have any side effects.
The full installation log is (sorry for the parts in Spanish but I guess is more or less legible, if translation needed please ask):
[root@test-replicas ~]# yum install postgresql96-server [....] Running transaction check Running transaction test Transaction test succeeded Running transaction Instalando : postgresql96-libs-9.6.16-2PGDG.rhel7.x86_64 1/3 Instalando : postgresql96-9.6.16-2PGDG.rhel7.x86_64 2/3 failed to link /usr/bin/psql -> /etc/alternatives/pgsql-psql: /usr/bin/psql exists and it is not a symlink failed to link /usr/bin/clusterdb -> /etc/alternatives/pgsql-clusterdb: /usr/bin/clusterdb exists and it is not a symlink failed to link /usr/bin/createdb -> /etc/alternatives/pgsql-createdb: /usr/bin/createdb exists and it is not a symlink failed to link /usr/bin/createlang -> /etc/alternatives/pgsql-createlang: /usr/bin/createlang exists and it is not a symlink failed to link /usr/bin/createuser -> /etc/alternatives/pgsql-createuser: /usr/bin/createuser exists and it is not a symlink failed to link /usr/bin/dropdb -> /etc/alternatives/pgsql-dropdb: /usr/bin/dropdb exists and it is not a symlink failed to link /usr/bin/droplang -> /etc/alternatives/pgsql-droplang: /usr/bin/droplang exists and it is not a symlink failed to link /usr/bin/dropuser -> /etc/alternatives/pgsql-dropuser: /usr/bin/dropuser exists and it is not a symlink failed to link /usr/bin/pg_basebackup -> /etc/alternatives/pgsql-pg_basebackup: /usr/bin/pg_basebackup exists and it is not a symlink failed to link /usr/bin/pg_dump -> /etc/alternatives/pgsql-pg_dump: /usr/bin/pg_dump exists and it is not a symlink failed to link /usr/bin/pg_dumpall -> /etc/alternatives/pgsql-pg_dumpall: /usr/bin/pg_dumpall exists and it is not a symlink failed to link /usr/bin/pg_restore -> /etc/alternatives/pgsql-pg_restore: /usr/bin/pg_restore exists and it is not a symlink failed to link /usr/bin/reindexdb -> /etc/alternatives/pgsql-reindexdb: /usr/bin/reindexdb exists and it is not a symlink failed to link /usr/bin/vacuumdb -> /etc/alternatives/pgsql-vacuumdb: /usr/bin/vacuumdb exists and it is not a symlink Instalando : postgresql96-server-9.6.16-2PGDG.rhel7.x86_64 3/3 Comprobando : postgresql96-libs-9.6.16-2PGDG.rhel7.x86_64 1/3 Comprobando : postgresql96-server-9.6.16-2PGDG.rhel7.x86_64 2/3 Comprobando : postgresql96-9.6.16-2PGDG.rhel7.x86_64 3/3 Instalado: postgresql96-server.x86_64 0:9.6.16-2PGDG.rhel7 Dependencia(s) instalada(s): postgresql96.x86_64 0:9.6.16-2PGDG.rhel7 postgresql96-libs.x86_64 0:9.6.16-2PGDG.rhel7 ¡Listo! [root@test-replicas ~]# ls -l /usr/bin/psql /etc/alternatives/pgsql-psql lrwxrwxrwx. 1 root root 23 dic 3 12:37 /etc/alternatives/pgsql-psql -> /usr/pgsql-9.6/bin/psql -rwxr-xr-x. 1 root root 449280 nov 6 2016 /usr/bin/psql
I've searched this error, but the only thing I've found is
something about alternatives system, and the command
update-alternatives. But I don't fully understand this system (I'm
used to Windows) and this means that when using the command I'm
not sure about what I'm doing, and I can't go to a Production
environment like this. An alternative to this could be copy all
these files to another location and replace them with links to the
copies. But this solution looks a bit ugly (don't know how to
express better :D).
Should I go the easy way (copy files and replace original ones with links), is better the first option (update-alternatives) or is there another solution?
Thank you for your time,
Ekaterina
