I am trying to execute pg_dump on PostgreSQL 9.0.4 server running on Debian and I am getting the error below:
./pg_dump: error while loading shared libraries: libpq.so.5: cannot open shared object file: No such file or directory
libpq.so.5 is a link to libpq.so.5.3 as shown below
lrwxrwxrwx 1 root root 12 Jun 27 16:24 libpq.so.5 -> libpq.so.5.3
-rwxr-xr-x 1 root root 180749 Jun 21 02:43 libpq.so.5.3
What is it that I am doing wrong?
Try this:
1: Know the path of libpq.so.5
find / -name libpq.so.5
Output example:
/usr/pgsql-9.4/lib/libpq.so.5
If found nothing, check if you have already installed the suitable postgresql-libs for your postgresql version and your OS platform
2: Symbolic link that library in a "well known" library path like /usr/lib:
ln -s /usr/pgsql-9.4/lib/libpq.so.5 /usr/lib/libpq.so.5
Attention:
If your platform is 64 bit, you MUST also symbolic link to 64 bit libraries path:
ln -s /usr/pgsql-9.4/lib/libpq.so.5 /usr/lib64/libpq.so.5
3: Be happy !
In which directory are these libpq files? You can try setting environment variable LD_LIBRARY_PATH to point to this directory or make sure it's in standard place.
Also, why isn't the libpq.so.5 link shown in the "as shown below" section? Maybe you should just run ldconfig?
Ubuntu 21.10+
Since this is the top search result for the error. I'll add an updated answer. I received the error when trying to start a django server.
I hadn't installed the postgres stuff.
Try:
sudo apt install libpq-dev
See:
https://packages.ubuntu.com/impish/libpq-dev
I was getting the same error message on Postgres 9.5 on RHEL 6.5 which lead me to this post. But a find for the file libpq.so.5 returned nothing, which made things more confusing.
In the end the following symbolic links made it run
ln -s /opt/rh/rh-postgresql95/root/usr/lib64/libpq.so.rh-postgresql95-5 /usr/lib64/libpq.so.rh-postgresql95-5
ln -s /opt/rh/rh-postgresql95/root/usr/lib64/libpq.so.rh-postgresql95-5 /usr/lib/libpq.so.rh-postgresql95-5
These paths are for RHEL, use find / -name libpq.so to location your installation and add it to the same destination folders /usr/lib/ and /usr/lib64/ using the orginal file name.
The root cause appears that the installation did not place this file into a shared location.
This error probably occurs because of $LD_LIBRARY_PATH environment variable is not set.
When you install your application from source code using prefix (./configure --prefix=/some/path), you have to inform where your lib/ path is. I just found a solution for this, and I added this variable to postgres user init bash script:
printf 'export PATH=$PATH:/opt/apl/pgsql/bin\nexport LD_LIBRARY_PATH=/opt/apl/pgsql/lib:$LD_LIBRARY_PATH\n' > /etc/profile.d/postgres.sh
redhat 7 is missing few steps after installing yum install pgadmin4:
sudo ln -s /usr/lib64/pgdg-libpq5/lib/libpq.so /usr/lib64/libpq.so.5
sudo ln -s /usr/lib64/pgdg-libpq5/lib/libpq.so /usr/lib/libpq.so.5
sudo chown -R apache:apache /var/lib/pgadmin4/
then you can run
sudo python3 /usr/lib/python3.6/site-packages/pgadmin4-web/setup.py
and if all successful:
systemctl start httpd
systemctl status httpd
apachectl configtest
and make sure the httpd starts ok
I had exactly the same problem with the pg 9.6 install. I fixed it like this. Rather irritating that the installer doesn't factor this in.
***********post yum install & running initdb *********
Success. You can now start the database server using:
/opt/rh/rh-postgresql96/root/usr/bin/pg_ctl -D /var/opt/rh/rh-postgresql96/lib/pgsql/data -l logfile start
-bash-4.2$ /opt/rh/rh-postgresql96/root/usr/bin/pg_ctl -D /var/opt/rh/rh-postgresql96/lib/pgsql/data -l logfile start
/opt/rh/rh-postgresql96/root/usr/bin/pg_ctl: **error while loading shared libraries: libpq.so.rh-postgresql96-5: cannot open shared object file: No such file or directory**
-bash-4.2$ id
uid=26(postgres) gid=26(postgres) groups=26(postgres) context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
**************
-bash-4.2$ cat LibFix
ln -s /opt/rh/rh-postgresql96/root/usr/lib64/libpq.so.rh-postgresql96-5 /usr/lib64/libpq.so.rh-postgresql96-5
ln -s /opt/rh/rh-postgresql96/root/usr/lib64/libpq.so.rh-postgresql96-5 /usr/lib/libpq.so.rh-postgresql96-5
**************
[root#****lab ~]# ln -s /opt/rh/rh-postgresql96/root/usr/lib64/libpq.so.rh-postgresql96-5 /usr/lib64/libpq.so.rh-postgresql96-5
[root#****lab ~]# ln -s /opt/rh/rh-postgresql96/root/usr/lib64/libpq.so.rh-postgresql96-5 /usr/lib/libpq.so.rh-postgresql96-5
[root#****lab ~]# su - postgres
Last login: Thu Apr 5 08:57:21 CEST 2018 on pts/0
-bash-4.2$ /opt/rh/rh-postgresql96/root/usr/bin/pg_ctl -D /var/opt/rh/rh-postgresql96/lib/pgsql/data -l logfile start
server starting
-bash-4.2$ ps -ef | grep postgres
root 12778 7883 0 09:07 pts/0 00:00:00 su - postgres
postgres 12779 12778 0 09:07 pts/0 00:00:00 -bash
postgres 12802 1 0 09:08 pts/0 00:00:00 /opt/rh/rh-postgresql96/root/usr/bin/postgres -D /var/opt/rh/rh-postgresql96/lib/pgsql/data
postgres 12803 12802 0 09:08 ? 00:00:00 postgres: logger process
postgres 12805 12802 0 09:08 ? 00:00:00 postgres: checkpointer process
postgres 12806 12802 0 09:08 ? 00:00:00 postgres: writer process
postgres 12807 12802 0 09:08 ? 00:00:00 postgres: wal writer process
postgres 12808 12802 0 09:08 ? 00:00:00 postgres: autovacuum launcher process
postgres 12809 12802 0 09:08 ? 00:00:00 postgres: stats collector process
postgres 12810 12779 0 09:08 pts/0 00:00:00 ps -ef
-bash-4.2$ id
uid=26(postgres) gid=26(postgres) groups=26(postgres) context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
-bash-4.2$ psql
psql (9.6.5)
postgres=# \conninfo
You are connected to database "postgres" as user "postgres" via socket in "/var/run/postgresql" at port "5432".
Related
i'm currently developping a Django server where i need a database, Sqlite3 don't seem to handle well my need so i'm trying to use PostgreSQL instead. I'm devellopping on Windows but the server will run on a Linux system once development is done, so i'm trying to use WSL to fit the expected result.
wsl -l -v
NAME STATE VERSION
Ubuntu-22.04 Running 1
I also updated to WSL2, same issue.
My issue is that i can't start the database :
# sudo service postgresql start
No PostgreSQL clusters exist; see "man pg_createcluster"
What i've done so far :
sudo apt update
sudo apt upgrade
sudo apt install postgresql postgresql-contrib
// it s installed
> psql --version
psql (PostgreSQL) 14.2 (Ubuntu 14.2-1ubuntu1)
// no service currently running
> ps aux| grep postgres
root 583 0.0 0.0 15044 1280 tty3 S 08:42 0:00 grep --color=auto postgres
// no cluster ?!?
> sudo service postgresql start
No PostgreSQL clusters exist; see "man pg_createcluster"
// indeed no cluster are created by default
> pg_lsclusters
Ver Cluster Port Status Owner Data directory Log file
// but i can t create one
> pg_createcluster 14.2 main
Error: no initdb program for version 14.2 found
> sudo pg_createcluster 14 main
Creating new PostgreSQL cluster 14/main ...
/usr/lib/postgresql/14/bin/initdb -D /var/lib/postgresql/14/main --auth-local peer --auth-host scram-sha-256 --no-instructions
Can't exec "/usr/lib/postgresql/14/bin/initdb": Permission denied at /usr/bin/pg_createcluster line 86.
Error: Could not open /etc/postgresql/14/main/start.conf for writing: Permission denied
Can't exec "/bin/sh": Permission denied at /usr/bin/pg_createcluster line 617.
Error: initdb failed
I also tried : this stackoverflow link
> sudo service --status-all
// ...
[ - ] postgresql
// ...
> sudo ps aux | grep postgres
root 769 0.0 0.0 15044 1284 tty3 S 08:48 0:00 grep --color=auto postgres
I didn't really understand this link : Change some config file that i can't find
And this one that only proposed to reformat my disk.. Link
Following Mark's Link i was able to find a solution.
It seems that WSL2 is required
I tried 2 wsl distro :
Ubuntu-22.04 -> Didn't work even with the guide, maybe it would work on a fresh install.
Ubuntu 20.04.4 LTS -> fresh install worked
# Create the file repository configuration:
sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt $(lsb_release -cs)-pgdg main" > /etc/apt/sources.list.d/pgdg.list'
# Import the repository signing key:
wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
# Update the package lists:
sudo apt-get update
# Install the latest version of PostgreSQL.
# If you want a specific version, use 'postgresql-12' or similar instead of 'postgresql':
sudo apt-get -y install postgresql postgresql-contrib
I want to describe a table schema in postgresql 14.
However when I use the older \d+, the error is thrown:
pgsql=# \d+ <table_name>
ERROR: column c.relhasoids does not exist
LINE 1: ...riggers, c.relrowsecurity, c.relforcerowsecurity, c.relhasoi...
Thanks in advance!
If you use an older psql version to connect to a newer server version, some commands may fail, as psql informs you when the connection is established. This is exactly what you see at work there.
Call the psql from your v14 installation, and things will work fine. If you don't know how to do that, uninstall all older versions of PostgreSQL.
\d+ is working on Postgres14 well. Maybe you are use older version of psql. There is not forward compatibility. If you want to use PostgreSQL14, you should to use psql for Postgres14 and higher.
You can check it by --option:
[pavel.stehule#pgsql ~]$ psql --version
psql (PostgreSQL) 9.6.23
Like both the earlier answers, you have two versions of psql in your host and the default is the older one which is not compatible with the current database version which is 14.
Temporary fix:
verify the current version & location
bash-4.2$ psql --version
psql (PostgreSQL) 9.2.24
bash-4.2$ which psql
/usr/bin/psql
Find the location of the version of psql for the current DB.
Usually, its under /usr/psql??/bin , like:
bash-4.2$ cd /usr/pgsql-13/bin
bash-4.2$ ls -ltr|grep psql
-rwxr-xr-x 1 root root 644264 May 13 2021 psql
Navigate to that location or invoke that psql binary by providing the path, like
bash-4.2$ /usr/pgsql-13/bin/psql --version
psql (PostgreSQL) 13.3
bash-4.2$ /usr/pgsql-13/bin/psql
Pager usage is off.
psql (13.3)
Type "help" for help.
postgres=#
Permanent Fix
If you want the psql of the existing database which is the new version to be default , you can use 'update-alternatives' utility. Like mentioned here:
How do I correct the mismatch of psql version and postgresql version?
This is how I did.
[root#ip-10-211-209-252 bin]# pwd
/usr/bin
[root#ip-xxxx bin]# mv psql psql9
[root#ip-xxxx bin]# update-alternatives --install /usr/bin/psql psql /usr/bin/psql9 1
[root#ip-xxxx bin]# cd /usr/pgsql-13/bin
[root#ip-xxxx bin]# ls -ltr|grep psql
-rwxr-xr-x 1 root root 644264 May 13 2021 psql
[root#ip-xxxx bin]# update-alternatives --install /usr/bin/psql psql /usr/pgsql-13/bin/psql 2
[root#ip-xxxx bin]# update-alternatives --config psql
There are 3 programs which provide 'psql'.
Selection Command
-----------------------------------------------
*+ 1 /usr/pgsql-13/bin/psql
2 /usr/bin/psql
3 /usr/bin/psql9
Enter to keep the current selection[+], or type selection number: 1
[root#ip-xxxx bin]#
Postgres database crashed after restart, tried just about everything including reinstalling postgres. It will not start on ubuntu 14.04,
$ systemctl status postgresql#9.6-main.service
Failed to issue method call: No such interface 'org.freedesktop.DBus.Properties' on object at path /org/freedesktop/systemd1/unit/postgresql_409_2e6_2dmain_2eservice
$ pg_lsclusters
Ver Cluster Port Status Owner Data directory Log file
9.6 main 5432 down postgres /var/lib/postgresql/9.6/main /var/log/postgresql/postgresql-9.6-main.log
$ sudo service postgresql start
* Starting PostgreSQL 9.6 database server
* Failed to issue method call: Unit postgresql#9.6-main.service failed to
load: No such file or directory. See system logs and 'systemctl status
postgresql#9.6-main.service' for details.
$ ps uxa|grep dbus-daemon
message+ 751 0.0 0.0 40812 4064 ? Ss 18:39 0:03 dbus-daemon --system --fork
dominic 3058 0.0 0.0 40840 4252 ? Ss 18:40 0:02 dbus-daemon --fork --session --address=unix:abstract=/tmp/dbus-S1LhlCDwl2
dominic 3145 0.0 0.0 39400 3536 ? S 18:40 0:00 /bin/dbus-daemon --config-file=/etc/at-spi2/accessibility.conf --nofork --print-address 3
dominic 17462 0.0 0.0 15956 2244 pts/4 S+ 21:45 0:00 grep --color=auto dbus-daemon
Postgres log file is empty.
I had the same error after install snap on Ubuntu 14.04. It was install some parts from systemd and broke postgresql init script.
You need to add parameter --skip-systemctl-redirect to pg_ctlcluster in file /usr/share/postgresql-common/init.d-functions
The function you need to change:
do_ctl_all() {
...
# --skip-systemctl-redirect fix postgresql No such interface 'org.freedesktop.DBus.Properties'
if [ "$1" = "stop" ] || [ "$1" = "restart" ]; then
ERRMSG=$(pg_ctlcluster --skip-systemctl-redirect --force "$2" "$name" $1 2>&1)
else
ERRMSG=$(pg_ctlcluster --skip-systemctl-redirect "$2" "$name" $1 2>&1)
fi
...
}
Ubuntu 14.04 did not switch to systemd yet. I highly recommend upgrading to 16.04 or even better, 18.04.
Why do I see multiple postgres instances in my machine. I would like to stop + remove the older version of postgres permanently, how should I go about doing this.
ps -ef | grep postgresql
postgres 1766 1 0 06:08 ? 00:00:00 /usr/lib/postgresql/9.1/bin/postgres -D /var/lib/postgresql/9.1/main -c config_file=/etc/postgresql/9.1/main/postgresql.conf -c external_pid_file=/var/run/postgresql/9.1-main.pid
postgres 3398 1 0 06:09 ? 00:00:00 /usr/lib/postgresql/9.4/bin/postgres -D /var/lib/postgresql/9.4/main -c config_file=/etc/postgresql/9.4/main/postgresql.conf
To remove, uninstall the postgres version via your package manager.
Ex: sudo apt-get remove postgresql-9.1
To temporarily disable, follow this:
https://serverfault.com/questions/582499/i-have-multiple-postgresql-servers-installed-how-do-i-disable-auto-boot-for-old
I'm trying to run postgresql on my local machine like I usually do, however it's putting me in a situation where I can't fix. I installed postgresql91 with macports.
These are the three commands I usually have to run to get it running:
sudo sysctl -w kern.sysv.shmall=4096
sudo sysctl -w kern.sysv.shmmax=16777216
sudo su postgres -c "/opt/local/lib/postgresql91/bin/postgres -D /opt/local/var/db/postgresql91/defaultdb -p 55432"
However, it's giving me this error today:
Nets-Mac-Pro:~ emai$ sudo sysctl -w kern.sysv.shmall=4096
Password:
kern.sysv.shmall: 4096 -> 4096
Nets-Mac-Pro:~ emai$ sudo sysctl -w kern.sysv.shmmax=16777216
kern.sysv.shmmax: 16777216 -> 16777216
Nets-Mac-Pro:~ emai$ sudo su postgres -c "/opt/local/lib/postgresql91/bin/postgres -D /opt/local/var/db/postgresql91/defaultdb -p 55432"
postgres cannot access the server configuration file "/opt/local/var/db/postgresql91/defaultdb/postgresql.conf": Permission denied
When I go to /opt/local/var/db/postgresql91/ and do an ls -l this is what comes up:
drwx------ 18 root wheel 612 Jun 28 12:44 defaultdb
So I decided to add the postgres user to the wheel group, and then chmod defaultdb to 770.
drwxrwx--- 18 root wheel 612 Jun 28 12:44 defaultdb
I still get the error:
FATAL: could not open configuration file "/opt/local/var/db/postgresql91/defaultdb/postgresql.conf": Permission denied
And so I change the file rights from:
-rw------- 1 root wheel 19170 Jan 7 11:52 postgresql.conf
to:
-rw-rw---- 1 root wheel 19170 Jan 7 11:52 postgresql.conf
And now it complains that when I run the command again:
Nets-Mac-Pro:~ emai$ sudo su postgres -c "/opt/local/lib/postgresql91/bin/postgres -D /opt/local/var/db/postgresql91/defaultdb -p 55432"
FATAL: data directory "/opt/local/var/db/postgresql91/defaultdb" has wrong ownership
HINT: The server must be started by the user that owns the data directory.
I have no clue how I used to run the postgres server considering the file permissions of the files. Where do I find the data folder that it is hinting me about? Is there a better way to fix this?
Postgres should be owner, and the only user capable of writing to, data directory.
So, do:
sudo chown -Rf postgres:postgres /opt/local/var/db/postgresql91/defaultdb
sudo chmod 700 /opt/local/var/db/postgresql91/defaultdb
and it should be fine.