error: connection to server on socket...

Started by Amn Ojee Uwover 2 years ago10 messagesgeneral
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#1Amn Ojee Uw
amnojeeuw@gmail.com

Using the following command on my Debian 12 machine:

/*sudo apt-get install postgresql postgresql-15 postgresql-client-common
postgresql-common postgresql-contrib postgresql-doc phppgadmin
*/

and following the instruction on this
<https://wiki.debian.org/PostgreSql#User_access&gt; web page I have
installed PostgreSQL-15.
The installation went smooth, until the following command was issued :

/*sudo -u postgres psql*/

... I get an error message that reads:

/*could not change directory to "/home/my_account": Permission denied*//*
*//*psql: error: connection to server on socket
"/var/run/postgresql/.s.PGSQL.5432" failed: No such file or directory*//*
*//*    Is the server running locally and accepting connections on that
socket?*/

What can I do to resolve this issue?

Thanks in advance.

#2Amn Ojee Uw
amnojeeuw@gmail.com
In reply to: Amn Ojee Uw (#1)
Re: error: connection to server on socket...

_*Addendum*_

I tried this, but to no avail : /*sudo systemctl start postgresql*/

Show quoted text

On 8/1/23 6:22 a.m., Amn Ojee Uw wrote:

Using the following command on my Debian 12 machine:

/*sudo apt-get install postgresql postgresql-15
postgresql-client-common postgresql-common postgresql-contrib
postgresql-doc phppgadmin
*/

and following the instruction on this
<https://wiki.debian.org/PostgreSql#User_access&gt; web page I have
installed PostgreSQL-15.
The installation went smooth, until the following command was issued :

/*sudo -u postgres psql*/

... I get an error message that reads:

/*could not change directory to "/home/my_account": Permission denied*//*
*//*psql: error: connection to server on socket
"/var/run/postgresql/.s.PGSQL.5432" failed: No such file or directory*//*
*//*    Is the server running locally and accepting connections on
that socket?*/

What can I do to resolve this issue?

Thanks in advance.

#3Tomas Pospisek
tpo2@sourcepole.ch
In reply to: Amn Ojee Uw (#1)
Re: error: connection to server on socket...

On 01.08.23 12:22, Amn Ojee Uw wrote:

Using the following command on my Debian 12 machine:

sudo apt-get install postgresql postgresql-15 postgresql-client-common postgresql-common postgresql-contrib postgresql-doc phppgadmin

and following the instruction on this
<https://wiki.debian.org/PostgreSql#User_access&gt; web page I have
installed PostgreSQL-15.
The installation went smooth, until the following command was issued :

sudo -u postgres psql

... I get an error message that reads:

could not change directory to "/home/my_account": Permission denied
psql: error: connection to server on socket "/var/run/postgresql/.s.PGSQL.5432" failed: No such file or directory
    Is the server running locally and accepting connections on that socket?

What can I do to resolve this issue?

When executing the `sudo` command above:

* as which user are you doing that (you can see that via `id`)?
* in which directory are you executing it (you can see that via `pwd`)?
* what is the home directory of the postgres user (you can see that via
`grep postgres /etc/passwd`)
* what does `ls -ld /var/run/postgresql/; ls -l
/var/run/postgresql/.s.PGSQL.5432` show?

You also wrote:

I tried this, but to no avail : `sudo systemctl start postgresql`

- what does `journalctl -xeu postgresql` say?
- what does `tail -n 20
/var/log/postgresql/postgresql-*-qgisclouddb.log` show?

*t

#4Pierre Fortin
pf@pfortin.com
In reply to: Amn Ojee Uw (#1)
Re: error: connection to server on socket...

On Tue, 1 Aug 2023 06:22:46 -0400 Amn Ojee Uw wrote:

"/var/run/postgresql/.s.PGSQL.5432" failed: No such file or directory*//*

Like mine, your distro probably uses /tmp/.s.PGSQL.5432
$ ll /tmp/.s.PGSQL.5432
srwxrwxrwx 1 postgres postgres 0 Aug 1 06:33 /tmp/.s.PGSQL.5432=

https://askubuntu.com/questions/50621/can-not-connect-to-postgresql-listening-on-port-5432

#5Matthias Apitz
guru@unixarea.de
In reply to: Pierre Fortin (#4)
Re: error: connection to server on socket...

El día martes, agosto 01, 2023 a las 07:28:49 -0400, pf@pfortin.com escribió:

On Tue, 1 Aug 2023 06:22:46 -0400 Amn Ojee Uw wrote:

"/var/run/postgresql/.s.PGSQL.5432" failed: No such file or directory*//*

Like mine, your distro probably uses /tmp/.s.PGSQL.5432
$ ll /tmp/.s.PGSQL.5432
srwxrwxrwx 1 postgres postgres 0 Aug 1 06:33 /tmp/.s.PGSQL.5432=

This here is on SuSE Linux:

# ls -l /tmp/.*5432
srwxrwxrwx 1 postgres postgres 0 Aug 1 13:39 /tmp/.s.PGSQL.5432
# netstat -an | grep 5432 | grep LIST
tcp 0 0 0.0.0.0:5432 0.0.0.0:* LISTEN
tcp6 0 0 :::5432 :::* LISTEN
unix 2 [ ACC ] STREAM LISTENING 22000 /tmp/.s.PGSQL.5432

We normaly use the TCP/IP port 5432 to connect to the server.

matthias
--
Matthias Apitz, ✉ guru@unixarea.de, http://www.unixarea.de/ +49-176-38902045
Public GnuPG key: http://www.unixarea.de/key.pub

#6Tom Lane
tgl@sss.pgh.pa.us
In reply to: Pierre Fortin (#4)
Re: error: connection to server on socket...

pf@pfortin.com writes:

On Tue, 1 Aug 2023 06:22:46 -0400 Amn Ojee Uw wrote:

"/var/run/postgresql/.s.PGSQL.5432" failed: No such file or directory*//*

Like mine, your distro probably uses /tmp/.s.PGSQL.5432
$ ll /tmp/.s.PGSQL.5432
srwxrwxrwx 1 postgres postgres 0 Aug 1 06:33 /tmp/.s.PGSQL.5432=

Yeah. Look to see if there's a socket file there, and if so try

sudo -u postgres psql -h /tmp

In the longer term, this indicates that you have a psql that did
not come from the same packager as your server, because the server
thinks the default socket location is /tmp, but psql (or really
the libpq.so it's using) thinks the default location is
/var/run/postgresql. That's a build-time choice that some
packagers make because $standards. So the long-term fix is to
not have a hodge-podge of different Postgres installations on
the same machine.

BTW, you can ignore the "could not change directory" warning.
That's expected when starting "sudo -u postgres psql" in a
directory that the postgres user can't read.

regards, tom lane

#7Adrian Klaver
adrian.klaver@aklaver.com
In reply to: Amn Ojee Uw (#1)
Re: error: connection to server on socket...

On 8/1/23 03:22, Amn Ojee Uw wrote:

Using the following command on my Debian 12 machine:

/*sudo apt-get install postgresql postgresql-15 postgresql-client-common
postgresql-common postgresql-contrib postgresql-doc phppgadmin
*/

and following the instruction on this
<https://wiki.debian.org/PostgreSql#User_access&gt; web page I have
installed PostgreSQL-15.
The installation went smooth, until the following command was issued :

/*sudo -u postgres psql*/

... I get an error message that reads:

/*could not change directory to "/home/my_account": Permission denied*//*
*//*psql: error: connection to server on socket
"/var/run/postgresql/.s.PGSQL.5432" failed: No such file or directory*//*
*//*    Is the server running locally and accepting connections on that
socket?*/

What can I do to resolve this issue?

Run

pg_lsclusters

and see what port the server is running on.

Thanks in advance.

--
Adrian Klaver
adrian.klaver@aklaver.com

#8Amn Ojee Uw
amnojeeuw@gmail.com
In reply to: Adrian Klaver (#7)
Re: error: connection to server on socket...

Ah! Adrean, here is something interesting.

/*pg_lsclusters*/ displays the following information

/*Ver Cluster Port Status                Owner    Data
directory              Log file*//*
*//*12  main    5432 down,binaries_missing postgres
/var/lib/postgresql/12/main /var/log/postgresql/postgresql-12-main.log*//*
*//*15  main    5433 online                postgres
/var/lib/postgresql/15/main /var/log/postgresql/postgresql-15-main.log*/

What is version 12 is doing there, I thought that I had completely
removed it and replaced it with version 15!!
Should I remove that log file?

Regarding /pf@pfortin.com/ assertion, I am working with a _/Debian 12/_
machine and /*ls -l /tmp/.s.PGSQL.5432*/
displays the following error message : /*ls: cannot access
'/tmp/.s.PGSQL.5432': No such file or directory*/

As for Tomas Pospisek questions :
* as which user are you doing that (you can see that via `id`)?

Due to matters of security let us assume that the output is :
/*id*//*
*//*uid=1000(my_account) gid=1000(my_account)
groups=1000(my_account),24(cdrom),25(floppy),27(sudo),29(audio),30(dip),44(video),46(plugdev),100(users),*/
/*106(netdev),111(bluetooth),113(lpadmin),116(scanner),122(postgres),1001(tomcat)*/

* in which directory are you executing it  (you can see that via `pwd`)?

/*/home/*//*my_account*/

* what is the home directory of the postgres user (you can see that via
`grep postgres /etc/passwd`) /*
*/

/*~$ grep postgres /etc/passwd*//*
*//*postgres:x:113:122:PostgreSQL
administrator,,,:/var/lib/postgresql:/bin/bash*/

* what does `ls -ld /var/run/postgresql/; ls -l
/var/run/postgresql/.s.PGSQL.5432` show?

/*ls -ld /var/run/postgresql/*//*
*//*drwxrwsr-x 2 postgres postgres 100 Jul 31 20:45
/var/run/postgresql/*/

/*ls -l /var/run/postgresql/.s.PGSQL.5432*//*
*//*ls: cannot access '/var/run/postgresql/.s.PGSQL.5432': No such
file or directory*/

- what does `journalctl -xeu postgresql` say?

/*sudo journalctl -xeu postgresql*//*
*//*[sudo] password for *//*/**//*my_account*/: *//*
*//*░░ Support: https://www.debian.org/support*//*
*//*░░ *//*
*//*░░ A start job for unit postgresql.service has begun execution.*//*
*//*░░ *//*
*//*░░ The job identifier is 3496.*//*
*//*Jul 31 20:45:13 *//*tree.com systemd[1]: Finished
postgresql.service - PostgreSQL R>*//*
*//*░░ Subject: A start job for unit postgresql.service has finished
successfully*//*
*//*░░ Defined-By: systemd*//*
*//*░░ Support: https://www.debian.org/support*//*
*//*░░ *//*
*//*░░ A start job for unit postgresql.service has finished
successfully.*//*
*//*░░ *//*
*//*░░ The job identifier is 3496.*//*
*//*lines 4-16/16 (END)*/

- what does `tail -n 20
/var/log/postgresql/postgresql-*-qgisclouddb.log` show?

/*sudo tail -n 20 /var/log/postgresql/postgresql-*-qgisclouddb.log*//*
*//*tail: cannot open
'/var/log/postgresql/postgresql-*-qgisclouddb.log' for reading: No
such file or directory*/

I hope I was able to answer all the interesting questions posted as
reply to my original post.

/Thanks folks, I really appreciate the time you have dedicated to my
question./

Show quoted text

On 8/1/23 10:35 a.m., Adrian Klaver wrote:

On 8/1/23 03:22, Amn Ojee Uw wrote:

Using the following command on my Debian 12 machine:

/*sudo apt-get install postgresql postgresql-15
postgresql-client-common postgresql-common postgresql-contrib
postgresql-doc phppgadmin
*/

and following the instruction on this
<https://wiki.debian.org/PostgreSql#User_access&gt; web page I have
installed PostgreSQL-15.
The installation went smooth, until the following command was issued :

/*sudo -u postgres psql*/

... I get an error message that reads:

/*could not change directory to "/home/my_account": Permission
denied*//*
*//*psql: error: connection to server on socket
"/var/run/postgresql/.s.PGSQL.5432" failed: No such file or
directory*//*
*//*    Is the server running locally and accepting connections on
that socket?*/

What can I do to resolve this issue?

Run

pg_lsclusters

and see what port the server is running on.

Thanks in advance.

#9Adrian Klaver
adrian.klaver@aklaver.com
In reply to: Amn Ojee Uw (#8)
Re: error: connection to server on socket...

On 8/1/23 11:42, Amn Ojee Uw wrote:

Ah! Adrean, here is something interesting.

/*pg_lsclusters*/ displays the following information

/*Ver Cluster Port Status                Owner    Data
directory              Log file*//*
*//*12  main    5432 down,binaries_missing postgres
/var/lib/postgresql/12/main /var/log/postgresql/postgresql-12-main.log*//*
*//*15  main    5433 online                postgres
/var/lib/postgresql/15/main /var/log/postgresql/postgresql-15-main.log*/

What is version 12 is doing there, I thought that I had completely
removed it and replaced it with version 15!!

You didn't, read:

/messages/by-id/20230731125247.puiaz7fjkfvljdwy@alvherre.pgsql

and

/messages/by-id/33f0fc61-2d0f-60bd-e0ed-4cada3c30301@aklaver.com

The clue is "binaries_missing".

You remove(ed) all the files except the conf files.

Should I remove that log file?

Run:

sudo apt purge postgresql-12

That will take care of removing all the conf files.

To connect you need to specify the correct port, 5433 or do:

sudo vi /etc/postgresql/15/main/postgresql.conf

and change

port = 5433

to

port = 5432

Then restart the server.

You then need to spend some time at the links in this message:

/messages/by-id/c1ad730a-a84a-ae97-2f23-6891cb06ef26@aklaver.com

Regarding /pf@pfortin.com/ assertion, I am working with a _/Debian 12/_
machine and /*ls -l /tmp/.s.PGSQL.5432*/
displays the following error message : /*ls: cannot access
'/tmp/.s.PGSQL.5432': No such file or directory*/

As for Tomas Pospisek questions :
* as which user are you doing that (you can see that via `id`)?

Due to matters of security let us assume that the output is :
/*id*//*
*//*uid=1000(my_account) gid=1000(my_account)
groups=1000(my_account),24(cdrom),25(floppy),27(sudo),29(audio),30(dip),44(video),46(plugdev),100(users),*/
/*106(netdev),111(bluetooth),113(lpadmin),116(scanner),122(postgres),1001(tomcat)*/

* in which directory are you executing it  (you can see that via `pwd`)?

/*/home/*//*my_account*/

* what is the home directory of the postgres user (you can see that via
`grep postgres /etc/passwd`) /*
*/

/*~$ grep postgres /etc/passwd*//*
*//*postgres:x:113:122:PostgreSQL
administrator,,,:/var/lib/postgresql:/bin/bash*/

* what does `ls -ld /var/run/postgresql/; ls -l
/var/run/postgresql/.s.PGSQL.5432` show?

/*ls -ld /var/run/postgresql/*//*
*//*drwxrwsr-x 2 postgres postgres 100 Jul 31 20:45
/var/run/postgresql/*/

/*ls -l /var/run/postgresql/.s.PGSQL.5432*//*
*//*ls: cannot access '/var/run/postgresql/.s.PGSQL.5432': No such
file or directory*/

- what does `journalctl -xeu postgresql` say?

/*sudo journalctl -xeu postgresql*//*
*//*[sudo] password for *//*/**//*my_account*/: *//*
*//*░░ Support: https://www.debian.org/support*//*
*//*░░ *//*
*//*░░ A start job for unit postgresql.service has begun execution.*//*
*//*░░ *//*
*//*░░ The job identifier is 3496.*//*
*//*Jul 31 20:45:13 *//*tree.com systemd[1]: Finished
postgresql.service - PostgreSQL R>*//*
*//*░░ Subject: A start job for unit postgresql.service has finished
successfully*//*
*//*░░ Defined-By: systemd*//*
*//*░░ Support: https://www.debian.org/support*//*
*//*░░ *//*
*//*░░ A start job for unit postgresql.service has finished
successfully.*//*
*//*░░ *//*
*//*░░ The job identifier is 3496.*//*
*//*lines 4-16/16 (END)*/

- what does `tail -n 20
/var/log/postgresql/postgresql-*-qgisclouddb.log` show?

/*sudo tail -n 20 /var/log/postgresql/postgresql-*-qgisclouddb.log*//*
*//*tail: cannot open
'/var/log/postgresql/postgresql-*-qgisclouddb.log' for reading: No
such file or directory*/

I hope I was able to answer all the interesting questions posted as
reply to my original post.

/Thanks folks, I really appreciate the time you have dedicated to my
question./

On 8/1/23 10:35 a.m., Adrian Klaver wrote:

On 8/1/23 03:22, Amn Ojee Uw wrote:

Using the following command on my Debian 12 machine:

/*sudo apt-get install postgresql postgresql-15
postgresql-client-common postgresql-common postgresql-contrib
postgresql-doc phppgadmin
*/

and following the instruction on this
<https://wiki.debian.org/PostgreSql#User_access&gt; web page I have
installed PostgreSQL-15.
The installation went smooth, until the following command was issued :

/*sudo -u postgres psql*/

... I get an error message that reads:

/*could not change directory to "/home/my_account": Permission
denied*//*
*//*psql: error: connection to server on socket
"/var/run/postgresql/.s.PGSQL.5432" failed: No such file or
directory*//*
*//*    Is the server running locally and accepting connections on
that socket?*/

What can I do to resolve this issue?

Run

pg_lsclusters

and see what port the server is running on.

Thanks in advance.

--
Adrian Klaver
adrian.klaver@aklaver.com

#10Amn Ojee Uw
amnojeeuw@gmail.com
In reply to: Adrian Klaver (#9)
Re: error: connection to server on socket...

Thank you Adrian. It Worked!!!

Show quoted text

On 8/1/23 2:55 p.m., Adrian Klaver wrote:

On 8/1/23 11:42, Amn Ojee Uw wrote:

Ah! Adrean, here is something interesting.

/*pg_lsclusters*/ displays the following information

/*Ver Cluster Port Status                Owner    Data
directory              Log file*//*
*//*12  main    5432 down,binaries_missing postgres
/var/lib/postgresql/12/main
/var/log/postgresql/postgresql-12-main.log*//*
*//*15  main    5433 online                postgres
/var/lib/postgresql/15/main /var/log/postgresql/postgresql-15-main.log*/

What is version 12 is doing there, I thought that I had completely
removed it and replaced it with version 15!!

You didn't, read:

/messages/by-id/20230731125247.puiaz7fjkfvljdwy@alvherre.pgsql

and

/messages/by-id/33f0fc61-2d0f-60bd-e0ed-4cada3c30301@aklaver.com

The clue is "binaries_missing".

You remove(ed) all the files except the conf files.

Should I remove that log file?

Run:

sudo apt purge postgresql-12

That will take care of removing all the conf files.

To connect you need to specify the correct port, 5433 or do:

sudo vi /etc/postgresql/15/main/postgresql.conf

and change

port = 5433

to

port = 5432

Then restart the server.

You then need to spend some time at the links in this message:

/messages/by-id/c1ad730a-a84a-ae97-2f23-6891cb06ef26@aklaver.com

Regarding /pf@pfortin.com/ assertion, I am working with a _/Debian
12/_ machine and /*ls -l /tmp/.s.PGSQL.5432*/
displays the following error message : /*ls: cannot access
'/tmp/.s.PGSQL.5432': No such file or directory*/

As for Tomas Pospisek questions :
* as which user are you doing that (you can see that via `id`)?

    Due to matters of security let us assume that the output is :
    /*id*//*
    *//*uid=1000(my_account) gid=1000(my_account)
groups=1000(my_account),24(cdrom),25(floppy),27(sudo),29(audio),30(dip),44(video),46(plugdev),100(users),*/
/*106(netdev),111(bluetooth),113(lpadmin),116(scanner),122(postgres),1001(tomcat)*/

* in which directory are you executing it  (you can see that via `pwd`)?

    /*/home/*//*my_account*/

* what is the home directory of the postgres user (you can see that
via `grep postgres /etc/passwd`) /*
*/

    /*~$ grep postgres /etc/passwd*//*
    *//*postgres:x:113:122:PostgreSQL
    administrator,,,:/var/lib/postgresql:/bin/bash*/

* what does `ls -ld /var/run/postgresql/; ls -l
/var/run/postgresql/.s.PGSQL.5432` show?

    /*ls -ld /var/run/postgresql/*//*
    *//*drwxrwsr-x 2 postgres postgres 100 Jul 31 20:45
    /var/run/postgresql/*/

    /*ls -l /var/run/postgresql/.s.PGSQL.5432*//*
    *//*ls: cannot access '/var/run/postgresql/.s.PGSQL.5432': No such
    file or directory*/

- what does `journalctl -xeu postgresql` say?

    /*sudo journalctl -xeu postgresql*//*
    *//*[sudo] password for *//*/**//*my_account*/: *//*
    *//*░░ Support: https://www.debian.org/support*//*
    *//*░░ *//*
    *//*░░ A start job for unit postgresql.service has begun
execution.*//*
    *//*░░ *//*
    *//*░░ The job identifier is 3496.*//*
    *//*Jul 31 20:45:13 *//*tree.com systemd[1]: Finished
    postgresql.service - PostgreSQL R>*//*
    *//*░░ Subject: A start job for unit postgresql.service has finished
    successfully*//*
    *//*░░ Defined-By: systemd*//*
    *//*░░ Support: https://www.debian.org/support*//*
    *//*░░ *//*
    *//*░░ A start job for unit postgresql.service has finished
    successfully.*//*
    *//*░░ *//*
    *//*░░ The job identifier is 3496.*//*
    *//*lines 4-16/16 (END)*/

- what does `tail -n 20
/var/log/postgresql/postgresql-*-qgisclouddb.log` show?

    /*sudo tail -n 20
/var/log/postgresql/postgresql-*-qgisclouddb.log*//*
    *//*tail: cannot open
    '/var/log/postgresql/postgresql-*-qgisclouddb.log' for reading: No
    such file or directory*/

I hope I was able to answer all the interesting questions posted as
reply to my original post.

/Thanks folks, I really appreciate the time you have dedicated to my
question./

On 8/1/23 10:35 a.m., Adrian Klaver wrote:

On 8/1/23 03:22, Amn Ojee Uw wrote:

Using the following command on my Debian 12 machine:

/*sudo apt-get install postgresql postgresql-15
postgresql-client-common postgresql-common postgresql-contrib
postgresql-doc phppgadmin
*/

and following the instruction on this
<https://wiki.debian.org/PostgreSql#User_access&gt; web page I have
installed PostgreSQL-15.
The installation went smooth, until the following command was issued :

/*sudo -u postgres psql*/

... I get an error message that reads:

/*could not change directory to "/home/my_account": Permission
denied*//*
*//*psql: error: connection to server on socket
"/var/run/postgresql/.s.PGSQL.5432" failed: No such file or
directory*//*
*//*    Is the server running locally and accepting connections on
that socket?*/

What can I do to resolve this issue?

Run

pg_lsclusters

and see what port the server is running on.

Thanks in advance.