Cannot connect to postgresql on port 5432

<[email protected]> Mon, 23 Dec 2019 19:30:16 +0000
Newsgroups gmane.comp.db.postgresql.admin
Message-ID <2A91BEF8171A5349931391E0C721CC537D772EF8@CPEMS-KPN501.KPNCNL.LOCAL>
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Hi Experts,

Post installation of  PostgreSQL it is not listening on an IP, only on loca=
lhost.

Please suggest your inputs.


Used below command for installations -

# apt-get install postgresql-12
postgres=3D# select version();
                                                     version
---------------------------------------------------------------------------=
---------------------------------------
PostgreSQL 12.1 (Debian 12.1-1.pgdg100+1) on x86_64-pc-linux-gnu, compiled =
by gcc (Debian 8.3.0-6) 8.3.0, 64-bit
(1 row)

Entries in ::: /etc/postgresql/12/main/pg_hba.conf
# Database administrative login by Unix domain socket
local   all             postgres                                peer
# TYPE  DATABASE        USER            ADDRESS                 METHOD
# "local" is for Unix domain socket connections only
local   all             all                                     peer
# IPv4 local connections:
host    all             all             127.0.0.1/32            md5
# IPv6 local connections:
host    all             all             ::1/128                 md5
# Allow replication connections from localhost, by a user with the
# replication privilege.
local   replication     all                                     peer
host    replication     all             127.0.0.1/32            md5
host    replication     all             ::1/128                 md5

Not connected

postgres@srv:/opt$ netstat -nlp | grep 5432
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
tcp        0      0 127.0.0.1:5432          0.0.0.0:*               LISTEN =
     25857/postgres
unix  2      [ ACC ]     STREAM     LISTENING     74234    25857/postgres  =
     /var/run/postgresql/.s.PGSQL.5432


postgres@srv:~$ telnet 10.133.214.32 5432
Trying 10.133.214.32...
telnet: Unable to connect to remote host: Connection refused




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<p class=3D"MsoNormal">Hi Experts,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Post installation of &nbsp;PostgreSQL it is not list=
ening on an IP, only on localhost.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Please suggest your inputs.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.5pt;font-=
family:&quot;Arial&quot;,sans-serif;color:#1D1C1D;background:#F8F8F8"><o:p>=
&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><b><u><span lang=3D"EN-GB">Used below command for in=
stallations &#8211;<o:p></o:p></span></u></b></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><b><span lang=3D"EN-GB"># apt-get install postgresql=
-12<o:p></o:p></span></b></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">postgres=3D# select version();<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; version<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">-------------------------------=
---------------------------------------------------------------------------=
--------<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">PostgreSQL 12.1 (Debian 12.1-1.=
pgdg100&#43;1) on x86_64-pc-linux-gnu, compiled by gcc (Debian 8.3.0-6) 8.3=
.0, 64-bit<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">(1 row)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><b><u><span lang=3D"EN-GB">Entries in ::: /etc/postg=
resql/12/main/pg_hba.conf
<o:p></o:p></span></u></b></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB"># Database administrative login=
 by Unix domain socket<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">local&nbsp;&nbsp; all&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; postgres&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; peer<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB"># TYPE&nbsp; DATABASE&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; USER&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp; ADDRESS&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; METHOD<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB"># &quot;local&quot; is for Unix=
 domain socket connections only<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">local&nbsp;&nbsp; all&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; all&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;peer<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB"># IPv4 local connections:<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">host&nbsp;&nbsp;&nbsp; all&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; all&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 127.0.=
0.1/32&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; md=
5<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB"># IPv6 local connections:<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">host&nbsp;&nbsp;&nbsp; all&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; all&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ::1/12=
8&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp; md5<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB"># Allow replication connections=
 from localhost, by a user with the<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB"># replication privilege.<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">local&nbsp;&nbsp; replication&n=
bsp;&nbsp;&nbsp;&nbsp; all&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp; peer<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">host&nbsp;&nbsp;&nbsp; replicat=
ion&nbsp;&nbsp;&nbsp;&nbsp; all&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp; 127.0.0.1/32&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; md5<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">host&nbsp;&nbsp;&nbsp; replicat=
ion&nbsp;&nbsp;&nbsp;&nbsp; all&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp; ::1/128&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; md5<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><b><u><span lang=3D"EN-GB">Not connected<o:p></o:p><=
/span></u></b></p>
<p class=3D"MsoNormal"><b><u><span lang=3D"EN-GB"><o:p><span style=3D"text-=
decoration:none">&nbsp;</span></o:p></span></u></b></p>
<p class=3D"MsoNormal"><b>postgres@srv:/opt$ netstat -nlp | grep 5432<o:p><=
/o:p></b></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">(Not all processes could be ide=
ntified, non-owned process info<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">will not be shown, you would ha=
ve to be root to see it all.)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">tcp&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0 127.0.0.1:5432&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0.0.0.0:*&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; LISTEN&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp; 25857/postgres<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">unix&nbsp; 2&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp; [ ACC ]&nbsp;&nbsp;&nbsp;&nbsp; STREAM&nbsp;&nbsp;&nbsp;&nbsp; =
LISTENING&nbsp;&nbsp;&nbsp;&nbsp; 74234&nbsp;&nbsp;&nbsp; 25857/postgres&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; /var/run/postgresql/.s.PGSQL.5432<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><b><span lang=3D"EN-GB">postgres@srv:~$ telnet 10.13=
3.214.32 5432<o:p></o:p></span></b></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">Trying 10.133.214.32...<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">telnet: Unable to connect to re=
mote host: Connection refused<o:p></o:p></span></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
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