I am uncertain if its the permissions issue or something I am doing wrong and any help will be greatly appreciated.
I have a dedicated Ubuntu server with Postgres DB installed on it. I want to backup the databases, but when I use pg_dump I get permission denied. Can some one help me out?
Here are a few details about my set up.
On postgres: I have the following databases.
postgres,
template0,
template1,
mydb,
mydb1
I have 2 PostgreSQL users
postgres,
mydb (There are no postgresql groups defined yet)
All the other settings for postgres are default values.
On my ubuntu itself, I have 2 users.
user1,
mydb
I logged into the box as root/user1 using SSH, issued the following commands,
$ pg_dumpall > a.sql
I get, -bash: a.sql: Permission denied
Same goes with pg_dump command.
I know I am missing something here. Can some one guide me to properly issue this command?
TIA.
I get, -bash: a.sql: Permission denied
Same goes with pg_dump command.
This looks more like a file permission issue. Does the OS user have the right to write the dump file? Check file/directory permissions.
When you run the command
pg_dumpall > a.sql
then your shell will attempt to create the file a.sql in the current directory. If you (as "user1") do not have permission to create files in the current directory, then first use the cd command to change to a directory where you do have permission. You can use the pwd command to see what the current directory actually is.
Related
When login to the database using psql -u postgres, all the commands entered there can be seen in and recalled from history.
I created a role with a password and I would like to clear that entry.
How can I clear the history?
Please check on the /home/user/.psql_history, then open the file if we want we can clear all the commands or the necessary commands and save the file.
Because you used -u postgres, the file should be in the home of your postgres user. In my case it is /var/lib/postgresql/.psql_history.
I want to export everything(users, roles, object definitions, data) from my PostgreSQL and restore it into another server. How can I do that?
I try to use
pg_dumpall -U postgres -g > out.sql
but file out.sql is empty. Can someone explain me why this happens?
When I try:
pg_dumpall -U postgres > out.sql
PostgreSQL just didn't want to accept password for "postgres".
I prefer to do this job from (windows) command line(it is not problem and with linux command, I can translate them). And if there is nice pgAdmin way to do it, I will happy to learn it, too.
P.S: My password for "postgres" is correct (I try to login with "psql -U postgres" and there is no problem)
Update: I try with user different than "postgres"(in this case rsmn):
pg_dumpall -U rsmn > out.sql
I have following error:
pg_dumpall: query failed: ERROR: permission dneied for relation
pg_authid pg_dumpall: query was: SELECT oid, rolname, rolsuper,
rolinherit, rolcreaterole, rolcreatedb, rolcanlogin, rolconnlimit,
rolpassword, rolvalidunil, rolreplication, rolbypassrls,
pg_catalog.shobj_description(oid, 'pg_authid') as rolcomment, rolname
= current_user as is_current_user FROM pg_authid WHERE rolname !~ '^pg_' ORDER BY 2
User privileges(This user is only one beside "postgres"):
The attempt with user rsmn fails because it is not a superuser and cannot export the user passwords.
It remains to figure out why pg_dumpall -U postgres fails for you.
For that, the first thing would be to check the PostgreSQL server log. I am not sure where that is on your system, you should check the settings in postgresql.conf (logging_collector, log_destination, log_directory, log_filename). Probably it is in the Windows Event Log.
The log message will tell you what is wrong.
It could well be a problem with the pg_hba.conf file – if so, modern PostgreSQL versions will tell you which line was used.
For debugging purposes, you can try to change the relevant line to trust authentication so that no password is requested (but don't leave it that way, or everybody can connect as user postgres without password!).
If you are trying to do it under the *nix and your server is installed localy, you may not to use ident mode instead of password:
sudo su postgres
pg_dumpall > out.sql
I have PostgresQL 9.6.2 installed, and I'm trying to make a backup of one of my databases (my_database) using pg_dump command. It doesn't seem to be working as I see no output file.
I'm using a Mac and from my terminal (and in my project directory) I use:
psql postgres postgres
pg_dump my_database > my_database.bak
being postgres my database default user and password.
I've already tried using sudo psql postgres postgres with the same results.
I imagine that I'm experiencing some kind of lack of permissions but cannot understand it.
So, how to have the right permissions to do this?
Postgres comes with a bunch of stuff, including command-line tools. That includes the standard client, psql, and also the command pg_dump. That needs to be invoked from a shell command line.
If you type it into a psql command line, you'll get a syntax error once you terminate the line (with a ';') -- it's not valid sql, nor a valid command to psql.
Hope that helps!
I need to run multiple commands on an AWS Postgres RDS instance I have. I don't want to enter the password each time. I'm trying to use the .pgpass file but I'm running into errors. The first time I ran into an error which said 'role "ubuntu username" does not exist'. I logged in as the postgres user and created that username. After this, the error I get said database does not exist. I have a feeling these errors have nothing to do with trying to connect to the AWS RDS instance.
psql --host=<awshost> --port=5432 --username=<awsrdsusername> --password --dbname=<dbname asks for a password and then logs me in after I enter it. Now I put a file in /home/<ubuntuusername> called .pgpass which has <awshost>:5432:<dbname>:<awsrdsusername>:<password>. Permissions for this file are set to 0600. Now when I run psql from the terminal and that produces the error - psql: FATAL: role "<ubuntuusername>" does not exist. These steps are as outlined on this page.
Can someone help me with the steps to get a pgpass file to connect to an AWS RDS instance?
.pgpass doesn't provide connection information. You seem to expect that after you create a .pgpass file, you can run psql without arguments and it'll know where to connect. That is not the case.
The hostname, port, etc you put in .pgpass are there so that PostgreSQL knows which line to look at when matching the connection info to find its password.
If you had to run:
psql -h something
to connect without a .pgpass file, you still have to run the same thing to connect with a .pgpass file.
If you run psql without arguments it'll connect to the local PostgreSQL (if any), using the current unix username as the postgresql username and the database to connect to. That's why you get the error you do.
If you want to change the default connection, you can use environment variables like PGHOST, PGPORT, etc, and/or a .pgservice.conf file.
See the manual to learn more.
I need to do a report in JasperReports.... besides the point here.
Ive been given a existing Postgresql DB to use.
I have installed PostgreSQL and all went great. (except the package update at the end. Cant get past the proxy server)
Ive added the C:\Program Files\PostgreSQL\9.0\bin path the the system path as-well.
When I go to cmd and type psql it propts for a password....
I enter password, because thats the only password I added during instalation.
Then is comes up with psql: FATAL: database "Morne Nel" does not exist
step by step hoe do I import this DB into postgres? PLEASE?
When using psql you have to pass database name, otherwise postgres will try to connect to database matching your user name (that is why it tries to connect to "Morne Nel").
You can use createdb console command to create database first. Here is documentation on that command: http://www.postgresql.org/docs/9.3/static/sql-createdatabase.html
But also you can use pg_restore command right away with --create option passed to create and restore database from dump at once (documentation here: http://www.postgresql.org/docs/9.3/static/app-pgrestore.html).
Try to execute those commands (it is possible that you will have to specify your postgres user and password) and let us know what happened. I cannot write more at the moment as I am not sure what dump format do you have so it would be good to provide that information if you won't manage to use pg_restore successfully.