Обсуждение: backup script error with could not connect to database

Did you try

root su -c postgres pg_dumpall > postgresdump.sql

On Wed, 18 Dec 2019 at 19:55, Pepe TD Vo <pepevo@yahoo.com> wrote:
>
> hello expert,
>
> I had to do a backup on replication master-slave servers.  I also have asked this question before, but  I don't
understandwhy I followed the information and same scripting to run on the replication servers and didn't work.  I can
runpg_dumpall successful but not with the script.  Would you please tell me what's wrong and what need to correct the
error?
>
> my replication server (master) pg_hba.conf
>
> # "local" is for Unix domain socket connections only
> local   all   all                                                     peer
> host   all    all                     192.168.2.0/24        trust
> # IPv4 local connections:
> host   all   all                       127.0.0.1/32           indent
> local  all   postgres                                            trust
> host   all   power_user         0.0.0.0/0               md5
> host   all   other_user          0.0.0.0/0                md5
> host   all   storageLoader    0.0.0.0/0                md5
> # IPv6 local connections:
> host   all   all                        ::1/128                  indent
> #allow replication connections from localhost, by a user with the replication priviledge
> local   replication   all                                        trust
> host   replication   all         127.0.0.1/32           trust
> host   replicaiton   all         ::1/128                    trust
> host   replication   replicauser     masterIP/32  trust
> host   replicaiton   replicauser     slaveIP/32     trust
>
> from the postgres prompt I can connect to each database
>
> #psql -d template0 -U postgres
> template0-#
> #psql -d template1 -U postgres
> template1-#
>
> #psql -d pscidr -U postgres
> pscidr-#
> #psql -d postgres -U postgres
> postgres-#
>
>
> when I run the script as postgres os, I don't see the error but the only global.sql backup but nothing in it, 0 byte
(blank)sql script. 
>
> when I run as root su -c postgres /path/pg_backup.sh > pgbackup.log, I get below:
>
> Performing globals backup:
> Globals backup
> pg_dumpall: could not connect to database "template1":FATAL: Ident authentication failed for user "postgres" fro
globalsbackup. 
>
> Performing schema-only backup:
> psql:FATAL: Ident authentication failed for user "postgres"
> the following databases were matched for schema-only backup:
>
> performing full backup:
> psql:FATAL: Ident authentication failed for user "postgres"
>
>
> I can run pg_dumpall > postgresdump.sql as postgres user os fine will all the databases backup
>
> pg_backup.sh and pg_backup.config attachment.
>
> v/r,
>
> Bach-Nga
>
> No one in this world is pure and perfect.  If you avoid people for their mistakes you will be alone. So judge less,
loveand forgive more. 
> To call him a dog hardly seems to do him justice though in as much as he had four legs, a tail, and barked, I admit
hewas, to all outward appearances. But to those who knew him well, he was a perfect gentleman (Hermione Gingold) 
>
> **Live simply **Love generously **Care deeply **Speak kindly.
> *** Genuinely rich *** Faithful talent *** Sharing success

Did you try

root su -c postgres pg_dumpall > postgresdump.sql

On Wed, 18 Dec 2019 at 19:55, Pepe TD Vo <pepevo@yahoo.com> wrote:
>
> hello expert,
>
> I had to do a backup on replication master-slave servers.  I also have asked this question before, but  I don't
understandwhy I followed the information and same scripting to run on the replication servers and didn't work.  I can
runpg_dumpall successful but not with the script.  Would you please tell me what's wrong and what need to correct the
error?
>
> my replication server (master) pg_hba.conf
>
> # "local" is for Unix domain socket connections only
> local   all   all                                                     peer
> host   all    all                     192.168.2.0/24        trust
> # IPv4 local connections:
> host   all   all                       127.0.0.1/32           indent
> local  all   postgres                                            trust
> host   all   power_user         0.0.0.0/0               md5
> host   all   other_user          0.0.0.0/0                md5
> host   all   storageLoader    0.0.0.0/0                md5
> # IPv6 local connections:
> host   all   all                        ::1/128                  indent
> #allow replication connections from localhost, by a user with the replication priviledge
> local   replication   all                                        trust
> host   replication   all         127.0.0.1/32           trust
> host   replicaiton   all         ::1/128                    trust
> host   replication   replicauser     masterIP/32  trust
> host   replicaiton   replicauser     slaveIP/32     trust
>
> from the postgres prompt I can connect to each database
>
> #psql -d template0 -U postgres
> template0-#
> #psql -d template1 -U postgres
> template1-#
>
> #psql -d pscidr -U postgres
> pscidr-#
> #psql -d postgres -U postgres
> postgres-#
>
>
> when I run the script as postgres os, I don't see the error but the only global.sql backup but nothing in it, 0 byte
(blank)sql script. 
>
> when I run as root su -c postgres /path/pg_backup.sh > pgbackup.log, I get below:
>
> Performing globals backup:
> Globals backup
> pg_dumpall: could not connect to database "template1":FATAL: Ident authentication failed for user "postgres" fro
globalsbackup. 
>
> Performing schema-only backup:
> psql:FATAL: Ident authentication failed for user "postgres"
> the following databases were matched for schema-only backup:
>
> performing full backup:
> psql:FATAL: Ident authentication failed for user "postgres"
>
>
> I can run pg_dumpall > postgresdump.sql as postgres user os fine will all the databases backup
>
> pg_backup.sh and pg_backup.config attachment.
>
> v/r,
>
> Bach-Nga
>
> No one in this world is pure and perfect.  If you avoid people for their mistakes you will be alone. So judge less,
loveand forgive more. 
> To call him a dog hardly seems to do him justice though in as much as he had four legs, a tail, and barked, I admit
hewas, to all outward appearances. But to those who knew him well, he was a perfect gentleman (Hermione Gingold) 
>
> **Live simply **Love generously **Care deeply **Speak kindly.
> *** Genuinely rich *** Faithful talent *** Sharing success

I made it work.  I changed all in pg_hba.conf to trust and backup scripts run fine.

When Postgres searches for the matching line in pg_hba.conf, the first line that matches current connection wins. This means that if you have:

    host  all  all                      127.0.0.1/32          indent

    host  replication  all        127.0.0.1/32          trust

The first line wins and indent is applied instead of trust.

thank you so much.

Bach-Nga

No one in this world is pure and perfect.  If you avoid people for their mistakes you will be alone. So judge less, love and forgive more.

To call him a dog hardly seems to do him justice though in as much as he had four legs, a tail, and barked, I admit he was, to all outward appearances. But to those who knew him well, he was a perfect gentleman (Hermione Gingold)

**Live simply **Love generously **Care deeply **Speak kindly.

*** Genuinely rich *** Faithful talent *** Sharing success

On Thursday, December 19, 2019, 07:12:54 AM EST, bw <bwakkie@gmail.com> wrote:

Did you try

root su -c postgres pg_dumpall > postgresdump.sql

On Wed, 18 Dec 2019 at 19:55, Pepe TD Vo <pepevo@yahoo.com> wrote:
>
> hello expert,
>
> I had to do a backup on replication master-slave servers.  I also have asked this question before, but  I don't understand why I followed the information and same scripting to run on the replication servers and didn't work.  I can run pg_dumpall successful but not with the script.  Would you please tell me what's wrong and what need to correct the error?
>
> my replication server (master) pg_hba.conf
>
> # "local" is for Unix domain socket connections only
> local  all  all                                                    peer
> host  all    all                    192.168.2.0/24        trust
> # IPv4 local connections:
> host  all  all                      127.0.0.1/32          indent
> local  all  postgres                                            trust
> host  all  power_user        0.0.0.0/0              md5
> host  all  other_user          0.0.0.0/0                md5
> host  all  storageLoader    0.0.0.0/0                md5
> # IPv6 local connections:
> host  all  all                        ::1/128                  indent
> #allow replication connections from localhost, by a user with the replication priviledge
> local  replication  all                                        trust
> host  replication  all        127.0.0.1/32          trust
> host  replicaiton  all        ::1/128                    trust
> host  replication  replicauser    masterIP/32  trust
> host  replicaiton  replicauser    slaveIP/32    trust
>
> from the postgres prompt I can connect to each database
>
> #psql -d template0 -U postgres
> template0-#
> #psql -d template1 -U postgres
> template1-#
>
> #psql -d pscidr -U postgres
> pscidr-#
> #psql -d postgres -U postgres
> postgres-#
>
>
> when I run the script as postgres os, I don't see the error but the only global.sql backup but nothing in it, 0 byte (blank) sql script.
>
> when I run as root su -c postgres /path/pg_backup.sh > pgbackup.log, I get below:
>
> Performing globals backup:
> Globals backup
> pg_dumpall: could not connect to database "template1":FATAL: Ident authentication failed for user "postgres" fro globals backup.
>
> Performing schema-only backup:
> psql:FATAL: Ident authentication failed for user "postgres"
> the following databases were matched for schema-only backup:
>
> performing full backup:
> psql:FATAL: Ident authentication failed for user "postgres"
>
>
> I can run pg_dumpall > postgresdump.sql as postgres user os fine will all the databases backup
>
> pg_backup.sh and pg_backup.config attachment.
>
> v/r,
>
> Bach-Nga
>
> No one in this world is pure and perfect.  If you avoid people for their mistakes you will be alone. So judge less, love and forgive more.
> To call him a dog hardly seems to do him justice though in as much as he had four legs, a tail, and barked, I admit he was, to all outward appearances. But to those who knew him well, he was a perfect gentleman (Hermione Gingold)
>
> **Live simply **Love generously **Care deeply **Speak kindly.
> *** Genuinely rich *** Faithful talent *** Sharing success