From my EC2 instance, I am able to connect to MySQL AWS RDS instance with mysql command as shown below if the RDS security group allows traffic from anywhere on port 3306. However, if I set the VPC default security group (also attached to the RDS instance) to accept 3306 traffic only from the public IP address of this EC2 instance, then the connection does not go through.
export MYSQ_PWD=password
mysql -h AWS_RDS_HOST -P 3306 -u admin
The EC2 and RDS instances are part of testing some functionalities of our application and required to be fully automated and 'throwaway' in nature. However, I don't want to keep the access as wide as 0.0.0.0/0 but limit to the IP address of the EC2 instance. The IP address of the EC2 instance is derived from curl -s http://checkip.amazonaws.com/.
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I've set up a basic AWS RDS in the free tier. No public access but created a security group with my IP address added as an inbound rule.
For authentication I have RDS password plus AWS IAM.
I try to connect to the db via my computer (Ubuntu) with the following command:
mysql -h <db-conn>.amazonaws.com -P 3306 -u admin -p
I've already looked at this answer - Cant connect to mysql server on AWS RDS My port isn't blocked and I've checked the security group. I am able to successfully run AWS CLI commands like this:
aws rds describe-db-instances --filters "Name=engine,Values=mysql" --query "*[].[DBInstanceIdentifier,Endpoint.Address,Endpoint.Port,MasterUsername]"
But every time I run the mysql command, I get the following error:
ERROR 2002 (HY000): Can't connect to MySQL server on '<db-conn>.amazonaws.com' (115)
Would love some assistance with this. Thanks!
For being able to connect to your AWS RDS system and not letting anyone to connect you need to do the following steps:
Set your Publicly Accesible property to YES in your RDS configuration. That will give the system a Public Subnet address and allow it to be accesible from outside your VPC.
Go to your security group and allow access to your RDS system (the port 3306 that you are trying to connect) only from your VPC and from your public IP. This makes changes in your firewall rules.
In that way you will be able to access your RDS from your public IP, but noone else will be able to access.
check your ip that config in the security group, it is need your public ip not like '192.168.xxx.xxx', you can get your public ip by google
I am getting Error establishing a database connection while trying to connect to mysql on Amazon RDS from my Wordpress instance.
Wordpress is on my AWS Linux EC2 Instance, both are on the same VPC, same Security Group allowing 3306 inbound rule, db credentials in wp-config is also correct.
I am able to connect to my mysql RDS instance while ssh with the following command and it connects fine:
mysql -h "endpoint url" -u "username" -p "password";
However, when accessing the EC2 EIP on the browser to setup my WP final configuration I get the error connecting DB.
Did you check your security group? Because you have to open the MySQL Port 3306.
When you are creating the RDS, it is important to create a new security group, like myRDSgroup, later you have to modify it by open the port 3306 in the source select the security group where your AWS EC2 is located.
Could you send your security group screenshot, please?
I have an RDS instance running on one subnet without NAT, and an EC2 instance running on another subnet with an Internet Gateway configured, both located in the same VPC. I have configured the RDS instance to not be publicly accessible.
I am using the following command in my remote EC2 (running on the second subnet) to connect to the RDS instance:
mysql -h xxxx.eu-central-1.rds.amazonaws.com -P 3306 -u root -p
I have entered the correct password which I have set when configuring the RDS, but I get the following error:
Can't connect to MySQL server on xxxx.eu-central-1.rds.amazonaws.com
What am I doing wrong? Am I missing something?
You most likely need to open port 3306 in the security group assigned to the RDS server. In particular, create a rule allowing ingress on port 3306, and for the source use the ID of the security group assigned to the EC2 server.
The Security Group ingress rules for your subnet and/or your PostgreSQL instance must have port 3306 open for PostgreSQL. If you have changed the default port, you must use that port instead.
Your EC2 instance should not have to communicate through the internet to reach it, it just needs the proper port open in the security groups.
If you are not allowing all egress data in your EC2 security group, then you will need to ensure egress port 3306 is open on the EC2 security group, to the RDS security group.
I have following aws resources an EC2 Instance(running on windows platform) and a AWS RDS MySQL(complied for linux).
I want to connect AWS RDS MySQL instance using SSL through MySQL client utilities like MySQL workbench or TOAD for MySQL.
My questions
Are SSL CA, CERT Key files and SSL Cipher information located on AWS RDS MySQL instance?
How to connect to AWS RDS MySQL to download these files.
Are these files are required for above scenario?
Can I use SSH Client to connect AWS RDS (MYSQL)?
I have seen blogs/post but there EC2 instance is LINUX based.
My understanding SSH is used to remotely connect Linux machines.
Is there anyother way to connect AWS RDS MySQL securly?
RDS server doesn't served SSH.
However, you can create a SSH tunnel to EC2 instance that permit to access the RDS instance. You may also enable compression within the connection using ssh tunnel. Quite useful if you want to upload/download large data set from RDS.
# E.g. EC2 instance = ec2servername
# Create a ssh tunnel to RDS , access through local port 5678
ssh -C -o CompressionLevel=9 -N -L 5678:<your-rds-fqdn>:3306 <ec2username>#ec2servername -i ec2_private_key.pem
# mysql client connection
mysql -u <rdsusername> -p <database name> -h 127.0.0.1 -P 5678
You can download the SSL certificates here: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/UsingWithRDS.SSL.html
You cannot SSH into an RDS instance as it is managed by AWS and you aren't given SSH access.
In addition to using SSL you should configure the Security Groups in your VPC such that only servers within your VPC can access the RDS instance.
If you are using MySQL workbench then its pretty straight forward. Steps
1. Click on new MySQL connection.
2. Give any Connection name for your reference
3. In hostname field, add the endpoint URL which you can get from AWS RDS console. (dont add :3306, its default)
4. In username field, add the username you had added while creating RDS instance.
5. Keep other params as it is and click on Test Connection.It will ask for password which you had added while creating RDS instance.
6. If all the input params are correct, you are connected to the database
You cannot SSH into an RDS instance as it is managed by AWS and you aren't given SSH access.
but we have an option to create a SSH tunnel to EC2 instance that permit to access the RDS instance.
i got reference from this video, thought it may help other connect AWS RDS Db instances from our local machine using an Amazon EC2 "SSH Tunnel"
I have created an MySQL RDS instance with VPC. Now i am trying to connect to that RDS instance from my Ubuntu 12.04 machine using MySQL client by following code:
mysql -u uname -h test.c6tjb4nxvlri.us-west-2.rds.amazonaws.com -P 3306 -p
But i am getting this error:
ERROR 2003 (HY000): Can't connect to MySQL server on 'test.c6tjb4nxvlri.us-west-2.rds.amazonaws.com' (110)
I searched about this error and everywhere solution came out like
Go to the Instances
Find the security group
Change the inbound rules of that security group by
Adding source of user machine public ip or
Set source ip as 0.0.0.0/16
I tried everything but still same error occures. Any explanations?
The problem was in subnet. Subnet that you created must be publicly accessible.
In On-premises MySQL Workbench, use TCP/IP SSH Tunneling option. Make sure you have EC2 instance endpoint and keypair file.
In SSH endpoint - add your EC2 instance endpoint and for SSH password, browse your keypair. Rest of configurations for MySQL. Like MySQL's endpoint, username, password, port and schema name.
Test your connection it will return success. If not, check RDS Security group. In Security group, you open MySQL port for all IP address. Try it! it will work. Once connection was success, all schema are visible in MySQL Workbench.
RDS DB instance need not to be in public subnet and it is not best practice to do. Always keep RDS DB instance in private subnet and open traffic for EC2 instance.
When you use TCP/IP SSH Tunneling, request traffic will send through EC2 instance to RDS DB instance.
HTH.