This is a temporary database, so I don't mind sharing credentials. We have setup the following in RDS:
Host and Port and confirming public access
DB Name
Not shown is the username and password, however I am 100% certain that we are inputting the correct username and password into PgAdmin 4 and into python's psycopg2.connect function.
Failing connection in PgAdmin 4
However, we are failing to connect in both PgAdmin 4 and in python. The database is definitely public, and I am fairly certain that we are inputting the correct parameters. I believe dbname is testdb and not the instance ID etl-test
What could be the issue? The one thing I am not certain about are the VPCs and the VPC security groups... do we need to input these anywhere into python or PgAdmin4 in order to connect?
Its not the issue with pg-Admin or python. Looks like you don't have proper inbound rules set up.
this blog post might interests you
Related
I am brand new to RDS and have only used postgres through Rails and/or Heroku for the most part, so not that deep into database management. All I am trying to do is verify I can connect to the RDS instance I just created on AWS, but it is hanging, psql reporting this after hanging for about 30 seconds or a few minutes I guess:
$ psql postgresql://myuser:mypass#myawshost.rds.amazonaws.com:5432/my-db-name
psql: error: could not connect to server: Operation timed out
Is the server running on host "myawshost.rds.amazonaws.com" (<the ip address>) and accepting
TCP/IP connections on port 5432?
How do I connect to my AWS RDS instance from localhost?
I am sure I have the correct username and password.
I am sure the host is correct.
I am not sure if I should be including the port.
I am not sure if I am supposed to put a DB name, as under the "Configuration" tab in the RDS admin console for my database, it says DB instance ID: my-db-name, Engine version: 13.3, DB name: -, I am not sure if that - is my actual postgres db name or my-db-name is....
I tried this with the db name and it still hangs:
$ psql postgresql://myuser:mypass#myawshost.rds.amazonaws.com:5432/-
I edited the security group which is linked under the VPC security groups section of the Connectivity & security tab of https://console.aws.amazon.com/rds/home, so it allows all incoming connections. I also tried limiting to just my IP address as incoming connections.
Any help would be appreciated, thanks. Not sure why it would just be hanging. I have used a local version of postgres just fine, but connecting to postgres RDS is not working.
Underneath the Connectivity and Security > Security section I just noticed it says Public accessibility: No. Must I enable something else? There is also one VPC, one Subnet group, and several Subnets, which I don't know too much about, must I do something there?
Finally, "status" says Available with a green light, so things seem fine there.
I found a useful link in AWS knowledge center, I hope this will help you.
Btw if your RDS is deployed in a public subnet, yes you need to enable if you want to access RDS over the internet.
My DB instance is in a public subnet, and I can't connect to it over the internet from my local computer
This issue can occur when the Publicly Accessible property of the DB instance is set to No. To check whether a DB instance is publicly accessible, you can use the Amazon RDS Console or the AWS CLI.
To change the Publicly Accessible property of the Amazon RDS instance to Yes:
Verify that your VPC has an internet gateway attached to it. Make sure that the inbound rules for the security group allow connections.
Open the Amazon RDS console.
Choose Databases from the navigation pane, and then select the DB instance.
Choose Modify.
Under Connectivity, extend the Additional configuration section, and then choose Publicly accessible.
Choose Continue.
Choose Modify DB Instance.
Note: You don't need to choose Apply Immediately. For more information about how Apply Immediately can affect downtime, see Using the Apply Immediately parameter.
https://aws.amazon.com/premiumsupport/knowledge-center/rds-connectivity-instance-subnet-vpc/
My team and I are currently experiencing an issue where we can't connect to Cloud SQL's Postgres instance(s) from anything other than the psql cli tool. We get a too many connections for database "postgres" error (in PGAdmin, DBeaver, and our node typeorm/pg backend). It initially happened on our (only) Postgres database instance. After restarting, stopping and starting again, increasing machine CPU/memory proved to do nothing, I deleted the database instance entirely and created a new one from scratch.
However, after a few hours the problem came back. I know that we're not actually having too many connections as I am able to query pg_stat_activity from psql command line and see the following:
Only one of those (postgres username) connections is ours.
My coworker also can't connect at all - not even from psql cli.
If it matters, we are using PostgreSQL 13, europe-west2 (London), single zone availability, db-g1-small instance with 1.7GB memory, 10GB HDD, and we have public IP enabled and the correct IP addresses whitelisted.
I'd really appreciate if anyone has any insights into what's causing this.
EDIT: I further increased the instance size (to no longer be a shared core), and I managed to successfully connect my backend to it. However my psql cli no longer works - it appears that only the first client to connect is allowed to connect after a restart (even if it disconnects, other clients can't connect...).
From the error message, it is clear that the database "postgres" has a custom connection limit (set, for example, by ALTER DATABASE postgres CONNECTION LIMIT 1). And apparently, it is quite small. Why is everyone try to connect to that database anyway? Usually 'postgres' database is reserved for maintenance operations, and you should create other databases for daily use.
You can see the setting with:
select datconnlimit from pg_database where datname='postgres';
I don't know if the low setting is something you did, or maybe Google does it on its own for their cloud offering.
#jjanes had the right idea/mention.
I created another database within the Cloud SQL instance that wasn't named postgres and then it was fine.
It wasn't anything to do with maximum connection settings (as this was within Google Cloud SQL) or not closing connections (as TypeORM/pg does this already).
Question
What extra do I get if I fix this and get access to the admin database? (MyDataBaseName normal database works perfectly well)
Do I even need to fix this to use this postgres database for a Django 3.0 project?
Done -> ERROR
I have created a free tear AWS RDS Postgres 11 database.
I allowed external connections at creation and have successfully configured the inbound rules.
Than I have connected to pgAdmin (right click on server groups/create/server)
Than I got 3 database:
MyDataBaseName how I have named my database
postgesql that is auto generated
rdsadmin this is also auto generated,
I have problem with this one that it doesn't opens,
it has a rex x at the database icon
if i click on it it gives the following ERROR message
INTERNAL SERVER ERROR
FATAL: SomeConfigFileName.conf rejects connection for host "host.ip.adders.actully.with.numbers", user "myPersonalUsername", database "rdsadmin", SSL on
FATAL: SomeConfigFileName.conf rejects connection for host "host.ip.adders.actully.with.numbers", user "myPersonalUsername", database "rdsadmin", SSL off
"rdsadmin" is used for internal purposes by AWS. There should be no need to "fix" this.
The only things you are missing is things you aren't allowed to do anyway, and indeed not needing to deal with them yourself is what you are paying Amazon for.
Django shouldn't care. If it demands access to this database, that would be a bug in Django (or a configuration error)
I am trying to connect with PgAdmin to the local Divio database in the container but PgAdmin 4 will not let me connect without a password. The Divio Postgres database seems to come without a password.
Has anyone got round this?
You don't need a password.
See Interact with the local database from your host environment in the official documentation.
The key things are:
expose the database’s port by editing the docker-compose.yml file
use the correct credentials
Both steps are described in more detail in the documentation. I haven't given more specific details here such as port numbers in case those details ever change in the future.
I am trying to setup PostgreSQL and allow only certain Windows users to access the data from the database. Setting up Windows Authentication is Quite easy with MS SQL, but I can't figure out how to set it up in PostgreSQL.
I have gone through the documentation at http://www.postgresql.org/docs/current/static/auth-methods.html
and edited the pg_hba file. But after doing so, the PostgreSQL service fails to start.
Is the Postgresql server running on Windows as well as the clients then you might test with this to see if this works:
host all all 0.0.0.0/0 sspi
Magnus Hagander, a Postgresql developer, elaborates on this:
"All users connecting from the local machine, your domain, or a trusted domain will be automatically authenticated using the SSPI configured authentication (you can enable/disable things like NTLMv2 or LM using Group Policy - it's a Windows configuration, not a PostgreSQL one). You still need to create the login role in PostgreSQL, but that's it. Note that the domain is not verified at all, only the username. So the user Administrator in your primary and a trusted domain will be considered the same user if they try to connect to PostgreSQL. Note that this method is not compatible with Unix clients."
If you mix Unix-Windows then you have to resort to kerberos using GSSAPI which means you have to do some configuration. This article on deploying Pg in Windows environments may perhaps lead you in the right path.
If anyone else encouters this like I did so starting from 9.5 you wil need to add an optional parameter both to the ipv4 and ipv6 in order for this to work
include_realm=0
so the whole thing will look like
host all your_username 127.0.0.1/32 sspi include_realm=0