I created a Single Zone postgres db instance on Cloud Sql, and I am trying to connect by cloud sql proxy.
/cloud_sql_proxy -instances=<PROJECT_ID>:us-central1:staging=tcp:5432 -credential_file=./<SERVICE_ACCOUNT_KEY_FILE>
This is running well. But when i run below command,
psql "host=127.0.0.1 sslmode=disable dbname=postgres user=postgres"
the proxy shows this error:
2019/11/14 15:20:10 using credential file for authentication; email=<SERVICE_ACCOUNT_EMAIL>
2019/11/14 15:20:13 Listening on 127.0.0.1:5432 for <PROJECT_ID>:us-central1:staging
2019/11/14 15:20:13 Ready for new connections
2019/11/14 15:20:34 New connection for "<PROJECT_ID>:us-central1:staging"
2019/11/14 15:22:45 couldn't connect to "<PROJECT_ID>:us-central1:staging": dial tcp 34.70.245.249:3307: connect: connection timed out
Why is this happening?
I am doing this from my local.
I've just followed this tutorial step by step and it worked perfectly for me.
I did not have to do any extra steps(whitelisting ip, opening port etc...) and this was done in a clean project.
Are you trying to do this from local with the SDK or from Cloud Shell? Do you have any firewall restrictions in place?
Any further information about specific setup from your side that might affect will surely help.
Let us know.
EDIT:
Make sure your port 3307 is not blocked by anything.
Have a look at this official documentation specifying that.
Make sure you have all the required IAM roles attached to the service account before you connect to it:
For instance, the list of roles for cloudsql can be retrieved from gcloud with:
$ gcloud iam roles list --filter 'name~"roles/cloudsql"' --format 'table(name, description)'
NAME DESCRIPTION
roles/cloudsql.admin Full control of Cloud SQL resources.
roles/cloudsql.client Connectivity access to Cloud SQL instances.
roles/cloudsql.editor Full control of existing Cloud SQL instances excluding modifying users, SSL certificates or deleting resources.
roles/cloudsql.instanceUser Role allowing access to a Cloud SQL instance
roles/cloudsql.serviceAgent Grants Cloud SQL access to services and APIs in the user project
roles/cloudsql.viewer Read-only access to Cloud SQL resources.
If your service account is lacking the appropriate roles, it won't be able to connect to the instance for IAM authentication to work.
The issue is probably that you are not in the VPC network, like when you connect from localhost, so what happens is the cloud proxy showing it cannot connect to the remote IP.
Read this carefully if you use a private IP :
https://cloud.google.com/sql/docs/postgres/private-ip
Note that the Cloud SQL instance is in a Google managed network and the proxy is meant to be used to simplify connections to the DB within the VPC network.
In short: running cloud-sql-proxy from a local machine will not work, because it's not in the VPC network. It should work from a Compute Engine VM that is connected to the same VPC as the DB.
What I usually do as a workaround is use gcloud ssh from a local machine and port forward over a small VM in compute engine, like:
gcloud beta compute ssh --zone "europe-north1-b" "instance-1" --project "my-project" -- -L 5432:cloud_sql_server_ip:5432
Then you can connect to localhost:5432 (make sure nothing else is running or change first port number to one that is free locally)
What should also work is to setup a VPN connection to the VPC network and then run the cloud proxy in node in that network.
I have to say I found this really confusing because it gives the impression the proxy does similar magic like gloud does. It's beyond me why some Google engineers have not wired that together yet, can't be too hard.
I had this issue previously when I didn't specify the port argument to psql for some reason, try this:
psql "host=127.0.0.1 port=5432 sslmode=disable user=postgres"
Don't specify the db, and see if that lets you get to the prompt.
Related
Is it possible possible to connect to Fly.io Postgres from a NEXT.js API route served from a Vercel severless function, and if so, how?
I've read and reread the Fly.io Postgres docs, focusing especially on Connecting from outside Fly.io and (since my API routes use Prisma to connect to Postgres) Connecting with Prisma, but it seems I would need to either install flyctl or a set up a WireGuard Tunnel in Vercel, neither of which I could figure out how to do from web searches.
I found essentially the same question on the Fly.io community forum, but unfortunately, no one has answered it after 26 days (as of this writing).
To add a bit more detail, I'm familiar with Heroku Postgres, where a connection string is essentially all that's needed to connect, but it seems connecting to Fly.io Postgres requires a connection string plus a proxy created with flyctl. This was easy to get working on my local machine, but it's not clear how to do this on a remote host like Vercel.
One of the solutions is to allocate an ip address to your app with link here
fly ips allocate-v4 --app <pg-app-name>
Then add these service configurations to the fly.toml file
[[services]]
internal_port = 5432 # Postgres instance
protocol = "tcp"
[[services.ports]]
handlers = ["pg_tls"]
port = 5432
Redeploy your app with fly deploy
Go to your fly dashboard you will be able to see Ip Addresses that you can use as host to connect to the database
Trying to connect from a datalab notebook with PostgreSQL database hosted on Google Cloud SQL. Try both direct IP and instance connection ways but both give us an exception.
direct connection URI:
"{engine}://{user}:{password}#{host}:{port}/{database}"
using gcloud sql connect
"{engine}://{user}:{password}#/{database}?host=/cloudsql/{instance_connection_name}"
both give us this exception:
OperationalError: (psycopg2.OperationalError) could not connect to
server: Connection timed out
Is the server running on host "***.***.***.***" and accepting
TCP/IP connections on port ****?
Any idea if it need a cloud sql proxy as in Collab proxy connection? And if it is needed how to do it with datalab libraries?
I finally got it.
Assuming that datalab VM is already authenticated on Gcloud i try to use cloud_sql_proxy to connect without auth python commands that appear on Collab proxy connection and fix the error that still appears by crating missing directory. Si i got this:
!wget https://dl.google.com/cloudsql/cloud_sql_proxy.linux.amd64 -O cloud_sql_proxy
!mkdir -p /cloudsql
!chmod +x cloud_sql_proxy
.
!./cloud_sql_proxy --instances=project-id:europe-west1:posty --dir /cloudsql
as with Collab solution we need to let the notebook running in alternate window to keep proxy. With other notebooks on the same machine we finally obtain access to the database.
Note: Probably a better solution could be to edit the docker image of datalab machines to include this behaviour as noted here.
IT may be that your VM machine ip isn't whitelisted on the database.
You can access the list and add new ips on the google cloud console SQL > yor_database > authorization.
Check this link for details https://cloud.google.com/sql/docs/mysql/connect-external-app?hl=en_US&_ga=2.178999533.-851571953.1521816449#appaccessIP
I have an ubunut Compute Engine instance and a postgres Cloud SQL instance, both part of the same project and both in the same zone. I want to connect to the Cloud SQL from the Compute Engine but am having some trouble
My postgres has the default user setup and a new DB added. I have reserved a static IP for my Compute Engine and added this IP to authorised list in postgres. I've tried connecting (from the cloud shell) both with a python script using psycopg2 and directly from bash using psql. The error messages I get in both cases:
Connection timed out
Is the server running on host "xx.xxx.xxx.xx" and accepting
TCP/IP connections on port 5432?
Address omitted, but it is correct. The thing I can't be sure of is whether postgres is listening on the port as there is no (?) config option for this from the dashboard - though I would assume it to be running on 5432 (default)
Is there anything, either postgres or Google Cloud Infrastructure specific that I have missed?
The most resilient and portable way of connecting to a CloudSQL instance is through the CloudSQL Proxy.
There are several options for using the proxy, but in the docs there are specific instructions for using it from a GCE instance. I encourage you to check that option, as it will allow you to move your infrastructure anywhere without the need to change your code, you'll only need to configure the proxy properly wherever you're deploying your app.
I am trying to connect AWS RDS PostgreSql from PgAdmin 3. I followed the below link
http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_ConnectToPostgreSQLInstance.html
In Security Group, I also added PostgreSQL and All traffic as below
The "publicly accessible" flag was enabled (updated after Mark B's comment)
I got the error from PGAdmin3
Very appreciate for any suggestion
******UPDATE*******
I can connect pgAdminIII to AWS RDS successfully using home wifi, but cannot connect using office wifi.
My concern is:
Was the port 5432 blocked by office wifi?
How can I configure/update the port without impacting to current API?
Note: My current API is working well (CRUD)
Can you can test your connection to a DB instance using common Linux or Windows tools first?
From a Linux or Unix terminal, you can test the connection by typing the following (replace with the endpoint and with the port of your DB instance):
$nc -zv DB-instance-endpoint port
For example, the following shows a sample command and the return value:
$nc -zv postgresql1.c6c8mn7tsdgv0.us-west-2.rds.amazonaws.com 8299
Connection to postgresql1.c6c8mn7tsdgv0.us-west-2.rds.amazonaws.com
8299 port [tcp/vvr-data] succeeded!
Windows users can use Telnet to test the connection to a DB instance. Note that Telnet actions are not supported other than for testing the connection. If a connection is successful, the action returns no message. If a connection is not successful, you receive an error message such as the following:
C:>telnet sg-postgresql1.c6c8mntzhgv0.us-west-2.rds.amazonaws.com
8299
Connecting To sg-postgresql1.c6c8mntzhgv0.us-west-2.rds.amazonaws.com...Could not
open connection to the host, on port 819: Connect failed
If Telnet actions return success, then you are good to go.
If you are trying to access it from a network which is not listed for that port. you need to add inbound rules for those network IPs from AMAZON RDS system
You will also need to set Public accessibility true under Connect & security tab in RDS console.
Read this post.In your security group go to unbound rules and add my ip.
and make sure your database is public.
https://serverfault.com/questions/656079/unable-to-connect-to-public-postgresql-rds-instance
I have configured an RDS Postgres micro instance for testing but am having problem connecting. I have created a security group and allow all hosts (0.0.0.0/0) by default to port 5432 but for some reason I am not able to connect. I tried connecting to the port 5432 on the machine but it appears to be closed. Any ideas? I have verified that the security group is using the correct security group.
This is my configuration
TCP
Port (Service) Source Action
5432 0.0.0.0/0 Delete
Here is how I am trying to connect to the rds service
psql -p 5432 -h example.cs945smhrv09.us-west-2.rds.amazonaws.com -U example example
UPDATE
OK feel a little silly after figuring out that rds starts up on a private 172 subnet. I was able to connect from my ec2 instance.
Question now is there a way to put that on a public address that I can connect to? I would like to configure it with a security group that limits the source ip but then be able to connect to it with psql from my desktop.
Update 2
I don't remember all the details when I originally posted this question but it is no longer an issue. We now have a management vpc that we connect to using a vpn server. The management vpc network is trusted by the prod and devel security groups for the rds instances. We have no problem communicating with them without adding any public ips.
Step 4 of the RDS setup wizard ("Additional Config") lets you select whether the DB is Publicly Accessible or not (if it's not, access is limited to within your VPC, regardless of your security group settings). I'd imagine that determines whether the hostname resolves to 54.* vs 172.* .
Your first instance may have been set to private - as far as I can tell this can't be changed after initialization. I had a similar issue and creating a new instance set to be publicly accessible solved it for me.
My company's firewall had blocked outgoing traffic to the default postgres port, 5432. I didn't realise this until I tested the port using netcat in a terminal window, as follows:
nc -zv portquiz.net 5432
Hopefully this saves someone half a day of messing around with AWS security groups.
Absolutely there is. I have pgadmin loaded on my local machine connected to my RDS instance. |
I just confirmed that I can connect using the same syntax you used for psql, although the -U was not necessary for me (I still included both "example" parameters though)
I did edit the "default" security group and added my IP (Ip of the machine I'm connecting from)/32 to be allowed, although I'm sure you could get less restrictive than that, but I'd start there and see if it helps.
This is likely caused by your outbound firewall rules. If you're behind a corporate firewall, they will often block outbound ports above a certain number. You need to setup an SSH tunnel of some kind to avoid this.
http://conoroneill.net/accessing-amazon-rds-instances-from-your-desktop/
I had this problem. This isn't a direct solution but might work for some. I set the Postgres security group to accept connections coming from the server that will be using it (same VPC). I then set up my Postgres client to use ssh tunneling. If I need to use the command line, I simply SSH into that server and then psql from there.
You can simply use workbench recommended by aws but make sure your all postgres availibily is set to everywhere..while adding PostgrSQL 5432
https://aws.amazon.com/getting-started/tutorials/create-connect-postgresql-db/