psql: FATAL: Ident authentication failed for user "postgres"

I have installed PostgreSQL and pgAdminIII on my Ubuntu Karmic box.

I am able to use pgAdminIII successfully (i.e. connect/log on), however when I try to login to the server using the same username/pwd on the command line (using psql), I get the error:

psql: FATAL:  Ident authentication failed for user "postgres"

Does anyone now how to resolve this issue?


Did you set the proper settings in pg_hba.conf?

See https://help.ubuntu.com/stable/serverguide/postgresql.html how to do it.

Postgres error message: FATAL: Ident authentication failed for user , It means that Postgres is trying to authenticate a user using the Ident protocol, and can't. Ident auth works like this: You have database role 'foo' on database 'db' � PSQLException: FATAL: Ident authentication failed for user “root” I am trying to connect to a database ‘bedrock’. I am able to login & see the DB by ‘psql -d bedrock -U root’ from cmd-prompt.


The following steps work for a fresh install of postgres 9.1 on Ubuntu 12.04. (Worked for postgres 9.3.9 on Ubuntu 14.04 too.)

By default, postgres creates a user named 'postgres'. We log in as her, and give her a password.

$ sudo -u postgres psql
\password
Enter password: ...
...

Logout of psql by typing \q or ctrl+d. Then we connect as 'postgres'. The -h localhost part is important: it tells the psql client that we wish to connect using a TCP connection (which is configured to use password authentication), and not by a PEER connection (which does not care about the password).

$ psql -U postgres -h localhost

psql: FATAL: Ident authentication failed for user "postgres", You're getting this error because you're failing client authentication. Based on the error message, you probably have the default postgres configuration, which sets client authentication method to "IDENT" for all PostgreSQL connections. Allow the connection unconditionally. FATAL: Ident authentication failed for user “postgres” Solution:-First I set the the password for postgres user in PostgreSQL using following commands. $ sudo -u postgres psql Now set the password using following command. postgres=# password Let’s create a new user account for your application using following command.


Edit the file /etc/postgresql/8.4/main/pg_hba.conf and replace ident or peer by either md5 or trust, depending on whether you want it to ask for a password on your own computer or not. Then reload the configuration file with:

/etc/init.d/postgresql reload

psql: FATAL: Ident authentication failed for user "username , psql: FATAL: Ident authentication failed for user “username”. How do I fix this error? A. To fix this error open PostgreSQL client authentication� For Centos 7, Change pg_hba.conf to below: # 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 ident host all all 127.0.0.1/32 md5 # IPv6 local connections: #host all all ::1/128 ident host all all ::1/128 trust # Allow replication connections from localhost, by a user with the


You're getting this error because you're failing client authentication. Based on the error message, you probably have the default postgres configuration, which sets client authentication method to "IDENT" for all PostgreSQL connections.

You should definitely read section 19.1 Client Authentication in the PostgreSQL manual to better understand the authentication settings available (for each record in pg_hba.conf), but here is the relevant snippet to help with the problem you're having (from the version 9.5 manual):

trust

Allow the connection unconditionally. This method allows anyone that can connect to the PostgreSQL database server to login as any PostgreSQL user they wish, without the need for a password or any other authentication. See Section 19.3.1 for details.

reject

Reject the connection unconditionally. This is useful for "filtering out" certain hosts from a group, for example a reject line could block a specific host from connecting, while a later line allows the remaining hosts in a specific network to connect.

md5

Require the client to supply a double-MD5-hashed password for authentication. See Section 19.3.2 for details.

password

Require the client to supply an unencrypted password for authentication. Since the password is sent in clear text over the network, this should not be used on untrusted networks. See Section 19.3.2 for details.

gss

Use GSSAPI to authenticate the user. This is only available for TCP/IP connections. See Section 19.3.3 for details.

sspi

Use SSPI to authenticate the user. This is only available on Windows. See Section 19.3.4 for details.

ident

Obtain the operating system user name of the client by contacting the ident server on the client and check if it matches the requested database user name. Ident authentication can only be used on TCP/IP connections. When specified for local connections, peer authentication will be used instead. See Section 19.3.5 for details.

peer

Obtain the client's operating system user name from the operating system and check if it matches the requested database user name. This is only available for local connections. See Section 19.3.6 for details.

ldap

Authenticate using an LDAP server. See Section 19.3.7 for details.

radius

Authenticate using a RADIUS server. See Section 19.3.8 for details.

cert

Authenticate using SSL client certificates. See Section 19.3.9 for details.

pam

Authenticate using the Pluggable Authentication Modules (PAM) service provided by the operating system. See Section 19.3.10 for details.

So ... to solve the problem you're experiencing, you could do one of the following:

  1. Change the authentication method(s) defined in your pg_hba.conf file to trust, md5, or password (depending on your security and simplicity needs) for the local connection records you have defined in there.

  2. Update pg_ident.conf to map your operating system users to PostgreSQL users and grant them the corresponding access privileges, depending on your needs.

  3. Leave the IDENT settings alone and create users in your database for each operating system user that you want to grant access to. If a user is already authenticated by the OS and logged in, PostgreSQL won't require further authentication and will grant access to that user based on whatever privileges (roles) are assigned to it in the database. This is the default configuration.

Note: The location of pg_hba.conf and pg_ident.conf is OS dependent.

psql: FATAL: Ident authentication failed for user , Unable to change PostgreSQL admin password or log in to PostgreSQL on Plesk : psql: FATAL: Ident authentication failed for user "postgres". By default PostgreSQL uses IDENT-based authentication and this will never allow you to login via -U and -W options. Allow username and password based authentication from your application by appling 'trust' as the authentication method for the Bitbucket database user. You can do this by modifying the pg_hba.conf file.


Simply adding the -h localhost bit was all mine required to work

psql: FATAL: Ident authentication failed for user "username" Error , Q. I've installed Postgresql under Red Hat Enterprise Linux 5.x server. I've created username / password and database. But when I try to connect it via PHP or� Postgresql: Ident authentication failed for user XXX. 3 September 2020 by Firman Hidayat. FATAL: Ident authentication failed for user "postgres"


(Fixed) FATAL: Ident authentication failed for user "postgres", First I set the the password for postgres user in PostgreSQL using following commands. $ sudo -u postgres psql. Now set the password using following command. When I try to log in as the root user with psql and and enter my computer's root user's password this is what what happens:-bash-4.2$ psql Password: psql: FATAL: password authentication failed for user "postgres" but when I change the above configuration on the pg_hba.conf file to: peer ident ident


psql: FATAL: Ident authentication failed for user (CentOS 7), In this video I will show you how to fix this error: psql: FATAL: Ident authentication failed for Duration: 2:40 Posted: Nov 20, 2018 psql > create user zabbix createdb password 'secretpassword'; > \quit when i try to the next step as user "zabbix " i get the following error: [email protected]:~$ echo "create database zabbix"|psql template1 psql: FATAL: Ident authentication failed for user "zabbix" [email protected]:~$


PostgreSQL, When we want to connect locally with psql, we get the following error message: $ psql -Utest -dma_base psql: FATAL: Ident authentication failed for user "test"� psql: FATAL: Peer authentication failed for user “postgres” (or any user) The connection failed because by default psql connects over UNIX sockets using peer authentication, that requires the current UNIX user to have the same user name as psql.