I need the psql command line tools, but I don't need the actual Postgres RDBMS. This is to work with a package which supports a psql interface.
Is it possible to install just psql?
(Ubuntu 16.04)
I would like to understand what a masked service is and how to unmask it if need be.
I have been trying to start PostgreSQL on Ubuntu 16.04-LTS using the command
systemctl start postgresql.service.
Both as a user with administrative privileges, as well as root respectively.
Unfortunately, I got
Failed to start postgresql.service: Unit postgresql.service is masked.
printed in both scenarios.
I have installed pgadmin using the ubuntu software center and am trying to access a local database (recently downloaded from the internet). I have tried to run the pg_ctl command (running as postgres) however this gives a command not found error. I have also ran the following commands:
echo $PATH: /usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games
so that's a bit of a weird place but still.
whereis pg_ctl: pg_ctl: /usr/share/man/man1/pg_ctl.1.gz type pg_ctl: -su: so it's somewhere on my system
type: pg_ctl: not found which looks wrong
apt-cache policy postgres-xc gives me a No such file or directory error the output of
sudo apt-get install postgres-xc is
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package postgres-xc
sudo apt-get -q update gives me :
Get:1 http://security.ubuntu.com precise-security Release.gpg [198 B]
Get:2 http://security.ubuntu.com precise-security Release [49.6 kB]
Get:3 http://security.ubuntu.com precise-security/main Sources [93.6 kB]
Hit http://nl.archive.ubuntu.com precise Release.gpg
Hit http://nl.archive.ubuntu.com precise-updates Release.gpg
Hit http://nl.archive.ubuntu.com precise-backports Release.gpg
Hit http://nl.archive.ubuntu.com precise Release
Hit http://nl.archive.ubuntu.com precise-updates Release
Get:4 http://extras.ubuntu.com precise Release.gpg [72 B]
Hit http://nl.archive.ubuntu.com precise-backports Release
Hit http://extras.ubuntu.com precise Release
Hit http://nl.archive.ubuntu.com precise/main Sources
Hit http://nl.archive.ubuntu.com precise/restricted Sources
Hit http://nl.archive.ubuntu.com precise/universe Sources
Hit http://nl.archive.ubuntu.com precise/multiverse Sources
Hit http://nl.archive.ubuntu.com precise/main amd64 Packages
Hit http://nl.archive.ubuntu.com precise/restricted amd64 Packages
Hit http://nl.archive.ubuntu.com precise/universe amd64 Packages
Hit http://nl.archive.ubuntu.com precise/multiverse amd64 Packages
Hit http://nl.archive.ubuntu.com precise/main i386 Packages
Hit http://nl.archive.ubuntu.com precise/restricted i386 Packages
Hit http://nl.archive.ubuntu.com precise/universe i386 Packages
Hit http://nl.archive.ubuntu.com precise/multiverse i386 Packages
Hit http://nl.archive.ubuntu.com precise/main TranslationIndex
Hit http://nl.archive.ubuntu.com precise/multiverse TranslationIndex
Hit http://nl.archive.ubuntu.com precise/restricted TranslationIndex
Hit http://extras.ubuntu.com precise/main Sources
Hit http://nl.archive.ubuntu.com precise/universe TranslationIndex
Hit http://nl.archive.ubuntu.com precise-updates/main Sources
Hit http://nl.archive.ubuntu.com precise-updates/restricted Sources
Hit http://nl.archive.ubuntu.com precise-updates/universe Sources
Hit http://nl.archive.ubuntu.com precise-updates/multiverse Sources
Hit http://nl.archive.ubuntu.com precise-updates/main amd64 Packages
Hit http://extras.ubuntu.com precise/main amd64 Packages
Hit http://extras.ubuntu.com precise/main i386 Packages
Ign http://extras.ubuntu.com precise/main TranslationIndex
Hit http://nl.archive.ubuntu.com precise-updates/restricted amd64 Packages
Hit http://nl.archive.ubuntu.com precise-updates/universe amd64 Packages
Hit http://nl.archive.ubuntu.com precise-updates/multiverse amd64 Packages
Hit http://nl.archive.ubuntu.com precise-updates/main i386 Packages
Hit http://nl.archive.ubuntu.com precise-updates/restricted i386 Packages
Hit http://nl.archive.ubuntu.com precise-updates/universe i386 Packages
Hit http://nl.archive.ubuntu.com precise-updates/multiverse i386 Packages
Hit http://nl.archive.ubuntu.com precise-updates/main TranslationIndex
Hit http://nl.archive.ubuntu.com precise-updates/multiverse TranslationIndex
Get:5 http://security.ubuntu.com precise-security/restricted Sources [2,494 B]
Get:6 http://security.ubuntu.com precise-security/universe Sources [29.9 kB]
Hit http://nl.archive.ubuntu.com precise-updates/restricted TranslationIndex
Hit http://nl.archive.ubuntu.com precise-updates/universe TranslationIndex
Hit http://nl.archive.ubuntu.com precise-backports/main Sources
Hit http://nl.archive.ubuntu.com precise-backports/restricted Sources
Hit http://nl.archive.ubuntu.com precise-backports/universe Sources
Hit http://nl.archive.ubuntu.com precise-backports/multiverse Sources
Hit http://nl.archive.ubuntu.com precise-backports/main amd64 Packages
Hit http://nl.archive.ubuntu.com precise-backports/restricted amd64 Packages
Hit http://nl.archive.ubuntu.com precise-backports/universe amd64 Packages
Hit http://nl.archive.ubuntu.com precise-backports/multiverse amd64 Packages
Hit http://nl.archive.ubuntu.com precise-backports/main i386 Packages
Hit http://nl.archive.ubuntu.com precise-backports/restricted i386 Packages
Hit http://nl.archive.ubuntu.com precise-backports/universe i386 Packages
Hit http://nl.archive.ubuntu.com precise-backports/multiverse i386 Packages
Hit http://nl.archive.ubuntu.com precise-backports/main TranslationIndex
Hit http://nl.archive.ubuntu.com precise-backports/multiverse TranslationIndex
Hit http://nl.archive.ubuntu.com precise-backports/restricted TranslationIndex
Hit http://nl.archive.ubuntu.com precise-backports/universe TranslationIndex
Hit http://nl.archive.ubuntu.com precise/main Translation-en
Hit http://nl.archive.ubuntu.com precise/multiverse Translation-en
Hit http://nl.archive.ubuntu.com precise/restricted Translation-en
Hit http://nl.archive.ubuntu.com precise/universe Translation-en
Hit http://nl.archive.ubuntu.com precise-updates/main Translation-en
Get:7 http://security.ubuntu.com precise-security/multiverse Sources [1,797 B]
Get:8 http://security.ubuntu.com precise-security/main amd64 Packages [347 kB]
Hit http://nl.archive.ubuntu.com precise-updates/multiverse Translation-en
Hit http://nl.archive.ubuntu.com precise-updates/restricted Translation-en
Hit http://nl.archive.ubuntu.com precise-updates/universe Translation-en
Hit http://nl.archive.ubuntu.com precise-backports/main Translation-en
Hit http://nl.archive.ubuntu.com precise-backports/multiverse Translation-en
Hit http://nl.archive.ubuntu.com precise-backports/restricted Translation-en
Hit http://nl.archive.ubuntu.com precise-backports/universe Translation-en
Ign http://extras.ubuntu.com precise/main Translation-en_US
Ign http://extras.ubuntu.com precise/main Translation-en
Get:9 http://security.ubuntu.com precise-security/restricted amd64 Packages [4,627 B]
Get:10 http://security.ubuntu.com precise-security/universe amd64 Packages [85.4 kB]
Get:11 http://security.ubuntu.com precise-security/multiverse amd64 Packages [2,439 B]
Get:12 http://security.ubuntu.com precise-security/main i386 Packages [366 kB]
Get:13 http://security.ubuntu.com precise-security/restricted i386 Packages [4,620 B]
Get:14 http://security.ubuntu.com precise-security/universe i386 Packages [89.5 kB]
Get:15 http://security.ubuntu.com precise-security/multiverse i386 Packages [2,635 B]
Hit http://security.ubuntu.com precise-security/main TranslationIndex
Hit http://security.ubuntu.com precise-security/multiverse TranslationIndex
Hit http://security.ubuntu.com precise-security/restricted TranslationIndex
Hit http://security.ubuntu.com precise-security/universe TranslationIndex
Hit http://security.ubuntu.com precise-security/main Translation-en
Hit http://security.ubuntu.com precise-security/multiverse Translation-en
Hit http://security.ubuntu.com precise-security/restricted Translation-en
Hit http://security.ubuntu.com precise-security/universe Translation-en
Fetched 1,081 kB in 0s (1,561 kB/s)
cat /etc/apt/sources.list gives me :
#deb cdrom:[Ubuntu 12.04.3 LTS _Precise Pangolin_ - Release amd64 (20130820.1)]/ dists/precise/main/binary-i386/
#deb cdrom:[Ubuntu 12.04.3 LTS _Precise Pangolin_ - Release amd64 (20130820.1)]/ dists/precise/restricted/binary-i386/
#deb cdrom:[Ubuntu 12.04.3 LTS _Precise Pangolin_ - Release amd64 (20130820.1)]/ precise main restricted
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://nl.archive.ubuntu.com/ubuntu/ precise main restricted
deb-src http://nl.archive.ubuntu.com/ubuntu/ precise main restricted
## Major bug fix updates produced after the final release of the
## distribution.
deb http://nl.archive.ubuntu.com/ubuntu/ precise-updates main restricted
deb-src http://nl.archive.ubuntu.com/ubuntu/ precise-updates main restricted
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://nl.archive.ubuntu.com/ubuntu/ precise universe
deb-src http://nl.archive.ubuntu.com/ubuntu/ precise universe
deb http://nl.archive.ubuntu.com/ubuntu/ precise-updates universe
deb-src http://nl.archive.ubuntu.com/ubuntu/ precise-updates universe
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://nl.archive.ubuntu.com/ubuntu/ precise multiverse
deb-src http://nl.archive.ubuntu.com/ubuntu/ precise multiverse
deb http://nl.archive.ubuntu.com/ubuntu/ precise-updates multiverse
deb-src http://nl.archive.ubuntu.com/ubuntu/ precise-updates multiverse
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://nl.archive.ubuntu.com/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://nl.archive.ubuntu.com/ubuntu/ precise-backports main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu precise-security main restricted
deb-src http://security.ubuntu.com/ubuntu precise-security main restricted
deb http://security.ubuntu.com/ubuntu precise-security universe
deb-src http://security.ubuntu.com/ubuntu precise-security universe
deb http://security.ubuntu.com/ubuntu precise-security multiverse
deb-src http://security.ubuntu.com/ubuntu precise-security multiverse
## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu precise partner
# deb-src http://archive.canonical.com/ubuntu precise partner
## This software is not part of Ubuntu, but is offered by third-party
## developers who want to ship their latest software.
deb http://extras.ubuntu.com/ubuntu precise main
deb-src http://extras.ubuntu.com/ubuntu precise main
I'm trying to understand the difference between service restart [someservice] and service reload [someservice]. I understand that restart restarts the service whereas reload reloads the configuration. But I don't understand the practical implications of this well enough to determine which I should use in a given context.
An example: most guides I've read for setting up PostgreSQL say that, once I've edited postgresql.conf and pg_hba.conf to allow remote connections, I should run:
sudo service postgresql restart
However, if I were to guess which to use based on the description above, I would choose reload.
In case it matters, I'm on Ubuntu 11.10, though I'm hoping for an as generally applicable explanation as possible.
I installed the Bitnami Django stack which included PostgreSQL 8.4.
When I run psql -U postgres I get the following error:
psql: could not connect to server: No such file or directory
Is the server running locally and accepting
connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?
PG is definitely running and the pg_hba.conf file looks like this:
# TYPE DATABASE USER CIDR-ADDRESS METHOD
# "local" is for Unix domain socket connections only
local all all md5
# IPv4 local connections:
host all all 127.0.0.1/32 md5
# IPv6 local connections:
host all all ::1/128 md5
What gives?
"Proof" that pg is running:
root@assaf-desktop:/home/assaf# ps axf | grep postgres
14338 ? S 0:00 /opt/djangostack-1.3-0/postgresql/bin/postgres -D /opt/djangostack-1.3-0/postgresql/data -p 5432
14347 ? Ss 0:00 \_ postgres: writer process
14348 ? Ss 0:00 \_ postgres: wal writer process
14349 ? Ss 0:00 \_ postgres: autovacuum launcher process
14350 ? Ss 0:00 \_ postgres: stats collector process
15139 pts/1 S+ 0:00 \_ grep --color=auto postgres
root@assaf-desktop:/home/assaf# netstat -nltp | grep 5432
tcp 0 0 127.0.0.1:5432 0.0.0.0:* LISTEN 14338/postgres
tcp6 0 0 ::1:5432 :::* LISTEN 14338/postgres
root@assaf-desktop:/home/assaf#