[Pkg-postgresql-public] Bug#795410: postgresql-common: pg_createcluster fails on clean install of postgresql

[Sergio Carvalho]

Package: postgresql-common
Version: 169
Severity: grave
Justification: renders package unusable

Dear Maintainer,


On a clean install of postgresql on debian sid, using a minimal system, /etc/postgresql is created with owner root:root and permissions 750. 
postgres user can't read /etc/postgresql/9.4/main/postgresql.conf. Several utilities fail because of this, namely pg_createcluster during install.

The base system is running on a container, created with debootstrap --include=locales,openssh-server sid <directory> <mirror>

Just after system install, postgres was installed with: apt-get install postgresql. 

The installer produces this output:

Setting up postgresql-9.4 (9.4.4-1) ...
Creating new cluster 9.4/main ...
  config /etc/postgresql/9.4/main
  data   /var/lib/postgresql/9.4/main
  locale en_US.UTF-8
Flags of /var/lib/postgresql/9.4/main set as -------------e-C
Warning: The socket directory for owners other than 'postgres'
defaults to /tmp. You might want to change the unix_socket_directories parameter
in postgresql.conf to a more secure directory.
Error: could not open /etc/postgresql/9.4/main/postgresql.conf for reading at /usr/share/perl5/PgCommon.pm line 194.
Can't exec "/bin/sh": Permission denied at /usr/bin/pg_createcluster line 590.
Error: could not create default cluster. Please create it manually with

  pg_createcluster 9.4 main --start

or a similar command (see 'man pg_createcluster').


-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.0.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to en_US.UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages postgresql-common depends on:
ii  adduser                   3.113+nmu3
ii  debconf [debconf-2.0]     1.5.57
ii  init-system-helpers       1.23
ii  lsb-base                  4.1+Debian13+nmu1
ii  postgresql-client-common  169
ii  procps                    2:3.3.10-2
ii  ssl-cert                  1.0.36
ii  ucf                       3.0030

Versions of packages postgresql-common recommends:
ii  logrotate  3.8.7-2

postgresql-common suggests no packages.

-- debconf information:
  postgresql-common/obsolete-major:
  postgresql-common/ssl: true