The Lambda function opens new connection to the DB proxy server inside the handler with each request. Choose Create a new Lambda function, and then type a name for your function (for example, HelloFunction ). Next, select the JDBC connection my-jdbc-connection that you created earlier for the on-premises PostgreSQL database server. SSMS doesn't support the creation of linked servers for Linux SQL Server, so you have to use these stored procedures to create them: Note 1: Enter the user name and password that you created earlier in Windows SQL Server in the stored procedure master.dbo.sp_addlinkedsrvlogin. There are 3 recommended solutions for Lambda functions: Optionally the environment variables can be encrypted with a custom IAM key. In some cases, this can lead to a job error if the ENIs that are created with the chosen VPC/subnet and security group parameters from one JDBC connection prohibit access to the second JDBC data store. Configuring AWS Lambda MySQL to Access AWS RDS Step 1: Create the Execution Role Step 2: Create an AWS RDS Database Instance Step 3: Create a Deployment Package Step 4: Create the Lambda Function Step 5: Test the Lambda Function Step 6: Clean Up the Resources Conclusion Prerequisites Basic understanding of serverless systems. Then choose Next: Permissions . To allow AWS Glue to communicate with its components, specify a security group with a self-referencing outbound rule for all TCP ports. AWS Lambda can't speak Postgres without some more extra configuration. Follow these steps to set up the JDBC connection. Review the script and make any additional ETL changes, if required. To connect to on-premise DB2, we are using IBM.Data.DB2.Core-lnx 5.0.0.400 NuGet. The second one is knex to be able to create queries easily. Wall shelves, hooks, other wall-mounted things, without drilling? You need to review the ACLs of the on-premise firewall. The IAM role must allow access to the AWS Glue service and the S3 bucket. details, see RDS Proxy pricing. AWS Glue creates ENIs with the same parameters for the VPC/subnet and security group, chosen from either of the JDBC connections. In this example, hashexpression is selected as shipmt_id with the hashpartition value as 15. (Including the ones on stack overflow) Even the aws guides found are either outdated or for different scenarios. AWS Glue jobs extract data, transform it, and load the resulting data back to S3, data stores in a VPC, or on-premises JDBC data stores as a target. The sam cli uses the environment variable DOCKER_HSOT to connect with the docker process. Port Enter the port for your database that you obtained earlier. How dry does a rock/metal vocal have to be during recording? Some if not most of the time you have to deal with the existing new or legacy systems. Network Gateways - A network node used in telecommunications that connects two networks with different transmission protocols together. I still need to research SNS and Kinesis further, but this need might become an issue with SNS or Kinesis. cloudbutton: thanks very much for your help. But nothing is for free; I'll talk about some complexities and considerations for using a database within Lambda functions. Update to SQL SERVER 2008 SP3 from RTM, problem solved. Connect and share knowledge within a single location that is structured and easy to search. The dataset then acts as a data source in your on-premises PostgreSQL database server for Part 2. Certspilot provides real exam questions for AWS Cloud Practitioner in PDF and practice testing engine, Just Go through all CLF-C01 questions in PDF . For this, it has been created the Hybrid Connection. 1 Can Lambda connect to on premise database? For this example, edit the pySpark script and search for a line to add an option partitionKeys: [quarter], as shown here. Seems a little odd that the on-site router doesn't have any logging: That would be the first place I would go to review this, and it will likely provide very useful information. AWS Glue then creates ENIs in the VPC/subnet and associate security groups as defined with only one JDBC connection. So I was wrong, I could not access the server via EC2. tn=telnetlib.Telnet('',port) Select the JDBC connection in the AWS Glue console, and choose Test connection. Build Rest API using AWS Lambda function and On-Premise ORACLE Database | by Muratakdeniz | Medium Write Sign up Sign In 500 Apologies, but something went wrong on our end. Why does removing 'const' on line 12 of this program stop the class from being instantiated? I used AWS Cognito for the authentication of API by JWT token, but there some other options as well. In some scenarios, your environment might require some additional configuration. You might also need to edit your database-specific file (such as pg_hba.conf) for PostgreSQL and add a line to allow incoming connections from the remote network block. endpoint instead of the database endpoint. It refers to the PostgreSQL table name cfs_full in a public schema with a database name of glue_demo. AWS publishes IP ranges in JSON format for S3 and other services. How Intuit improves security, latency, and development velocity with a Site Maintenance- Friday, January 20, 2023 02:00 UTC (Thursday Jan 19 9PM Were bringing advertisements for technology courses to Stack Overflow, Data Modeling with Kafka? There was small difference in setups between EC2 and lambda - where lambda were using NAT instead of IGM, however I reconfigured and it is still the same. And after a lot of retries and when I reset the router to factory settings and re-configured it again, it started to work! My recommendation would be: Make your Lambda write to an SNS topic which the on-prem application can subscribe to. Choose the IAM role that you created in the previous step, and choose Test connection. Please refer to your browser's Help pages for instructions. The default architecture value is x86_64.. code_sha256 You can populate the Data Catalog manually by using the AWS Glue console, AWS CloudFormation templates, or the AWS CLI. Edited by: igorau on May 31, 2019 2:50 AM. Standard Amazon RDS Proxy pricing applies. This could even be a hosted service like Confluent Cloud which runs in AWS or it could be a Kafka cluster in your own VPC. Connection pooling isn't properly supported. Cambium Networks delivers wireless communications that work for businesses, communities, and cities worldwide. Part 2: An AWS Glue ETL job transforms the source data from the on-premises PostgreSQL database to a target S3 bucket in Apache Parquet format. AWS Glue DPU instances communicate with each other and with your JDBC-compliant database using ENIs. If you haven't read it, it is recommended to read the use of aws lambda to develop serverless programs . This results in less number of open connections to the DB server, and much less rate of new DB connections creation. in a MySQL database. The lambda will be exposed as a Get method Rest API. That should also work. The same VPC is being used for EC2 and lambda, so I would expect that an ip address from the same subnet will be assigned to both ec2 and lambdas, am I wrong? Knowing this, we can optimise our code to take advantage of the deployment model for the greatest efficiencies. Manager. By default, it likely wouldn't allow port 80 traffic in from an outside network. Hope that helps. You can then run an SQL query over the partitioned Parquet data in the Athena Query Editor, as shown here. I would like to share with you my experience with AWS Lambda and its relationship with Oracle Database. Finally, it shows an autogenerated ETL script screen. Edited by: igorau on Jun 2, 2019 10:55 PM. The container will be resumed when a new request arrives. All non-VPC traffic routes to the virtual private gateway. You can also get it from the link below. How to create a lambda function in Amazon S3? Important Connection pooling is useless in Lambda function. I have used NodeJs for the lambda function. By default, all Parquet files are written at the same S3 prefix level. It is not always possible to use AWS services. You can set up a JDBC connection over a VPC peering link between two VPCs within an AWS Region or across different Regions and by using inter-region VPC peering. It loads the data from S3 to a single table in the target PostgreSQL database via the JDBC connection. Can I (an EU citizen) live in the US if I marry a US citizen? Apply all security groups from the combined list to both JDBC connections. Is there any additional logging which I can enable to see what is wrong? , Creating an interface endpoint for Lambda. The PostgreSQL server is listening at a default port 5432 and serving the glue_demo database. Secret A Secrets Manager secret with the database user name and print(tn). Making statements based on opinion; back them up with references or personal experience. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. There is no hard 10 MB limit to Kafka messages. Refresh the page, check Medium 's site status, or find something interesting to read. By default, you can connect to a proxy with the same username and password that it uses to connect to the In our example, we created an alias for SQL2 in the hosts file, so you dont need to enter the actual NetBIOS name between the square brackets. Rule you that you don't have NACLS in place on your EC2 subnets. AWS Glue can connect to Amazon S3 and data stores in a virtual private cloud (VPC) such as Amazon RDS, Amazon Redshift, or a database running on Amazon EC2. Create a new common security group with all consolidated rules. Accessing on-premise (site-to-site) resource from Lambda. Review the table that was generated in the Data Catalog after completion. For more information, see Adding a Connection to Your Data Store. This enables a function to reach high The number of ENIs depends on the number of data processing units (DPUs) selected for an AWS Glue ETL job. An adverb which means "doing without understanding". We have created a deployment image/package and referenced it to Lambda. A new table is created with the name cfs_full in the PostgreSQL database with data loaded from CSV files in the S3 bucket. He enjoys hiking with his family, playing badminton and chasing around his playful dog. Write a Program Detab That Replaces Tabs in the Input with the Proper Number of Blanks to Space to the Next Tab Stop. If you can allow executing on-prem resources via a http call, you can subscribe the url to SNS so that it will be invoke when an event is published to the SNS topic. 12+ years of hands on IT experience in design and development of complex systems. Since both SQS or SNS won't support a message size of 10MB, after each execution, you can push the 10MB data to AWS S3 where the bucket is configured with events to send a notification to SQS or SNS Topic. To demonstrate, create and run a new crawler over the partitioned Parquet data generated in the preceding step. If you aren't sure how to read the configs, you should provide text or a screenshot. @ Vijayanath Viswanathan The advantage to using Kafka in particular is we can use our existing CDAP application as-is, as it is already using Kafka. I have a task to connect on-premise SQL Database from Azure Function through VPN. What are the "zebeedees" (in Pern series)? To connect to on premise DB2, we are using IBM.Data.DB2.Core-lnx 3.1.0.400 nuget. I am trying to send data (>10MB potentially) from an AWS Lambda function to an on-premises CDAP application that is writing to an on-premises data store. SQS would be used as the message bus, and SNS just for error notifications and potentially other notifications. To learn more, see Build a Data Lake Foundation with AWS Glue and Amazon S3. If you do use the actual NetBIOS names, note that AWS defaults to NetBIOS names like Win-xxxx, and SQL Server requires square brackets for names with dashes. Configured . How would you use AWS RDS and AWS S3 to create a secure and reliable disaster recovery solution? You can use AWS SNS (Push) or AWS SQS (Pull) depending on the scale of the load for your AWS Lambda functions instead of maintaining a Apache Kafka cluster. When using only private IPs, you can ensure that your VPC is not reachable over the internet, and prevent any packets from entering or exiting the network. Optionally, you can use other methods to build the metadata in the Data Catalog directly using the AWS Glue API. ENIs are ephemeral and can use any available IP address in the subnet. AWS Glue is a fully managed ETL (extract, transform, and load) service to catalog your data, clean it, enrich it, and move it reliably between various data stores. * Experience to migrate on-premises Database to AWSCloud * Experience to provide Aws services implementation best practices. PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data. I need a 'standard array' for a D&D-like homebrew game, but anydice chokes - how to proceed? For example, run the following SQL query to show the results: SELECT * FROM cfs_full ORDER BY shipmt_id LIMIT 10; The table data in the on-premises PostgreSQL database now acts as source data for Part 2 described next. You can also choose to configure your AWS Lambda instance as a Genesys Cloud data action, as explained in Example AWS Lambda data action with on-premises solution. Connect Serverless to Postgres DB (2 Part Series) 1 Connecting AWS Lambda To A Postgres DB: Part 1 2 Connecting AWS Lambda To A Postgres DB: Part 2 Code of Conduct Report abuse Take a look at this: To subscribe to this RSS feed, copy and paste this URL into your RSS reader. A development team recently created a AWS Lambda function through the console. The EC2 and Lambda function are in same VPC. To create an ETL job, choose Jobs in the navigation pane, and then choose Add job. https://docs.aws.amazon.com/lambda/latest/dg/configuration-layers.html, TripActions Tech (Company Engineering Blog), What dev productivity teams and transport planners have in common, How to Use Azure Spot Virtual Machines for Cost Savings, Delogue PLM (Pricing, Features, Pros & Cons), Emulate USB Mass Storage Device in Ubuntu 18.04Dummys Guide. The CSV data file is available as a data source in an S3 bucket for AWS Glue ETL jobs. I would suggest doing a telnet test using tcp instead of a ping, assuming you are trying to hit something via tcp on premise..e.g. Follow the remaining setup steps, provide the IAM role, and create an AWS Glue Data Catalog table in the existing database cfs that you created before. For implementation details, see the following AWS Security Blog posts: When you test a single JDBC connection or run a crawler using a single JDBC connection, AWS Glue obtains the VPC/subnet and security group parameters for ENIs from the selected JDBC connection configuration. How can we cool a computer connected on top of or within a human brain? When you use a default VPC DNS resolver, it correctly resolves a reverse DNS for an IP address 10.10.10.14 as ip-10-10-10-14.ec2.internal. Create an IAM role for the AWS Glue service. Thanks for your feedback. When it comes to using DB connection in lambda in AWS, you should read about container execution model of lambda. Your configuration might differ, so edit the outbound rules as per your specific setup. By default the Lambda function runs in a VPC managed by AWS with internet access, so in this case it will have access to only resources exposed to the internet. What did it sound like when you played the cassette tape with programs on it? Open the /etc/hosts file and add the IP address of the Windows machine with SQL Server. IAM authentication, it is supported for RDS/Aurora MySQL and Postgres in addition to RDS Proxy. Self-hosted; RDS; Aurora; Google Cloud SQL; . Set up another crawler that points to the PostgreSQL database table and creates a table metadata in the AWS Glue Data Catalog as a data source. In addition to directly connecting to DynamoDB with a client, AWS Lambda function can integrate with DynamoDB using streams ( Source ). Proxy identifier The name of the proxy. Make Data Acquisition Easy with AWS & Lambda (Python) in 12 Steps | by Shawn Cochran | Towards Data Science Write Sign up 500 Apologies, but something went wrong on our end. The aggregated cloud usage from a large number of customers results in lower pay-as-you-go prices. The sample CSV data file contains a header line and a few lines of data, as shown here. AWS Lambda Connection Pooling Conclusion Lambda functions are stateless and asynchronous, and by using the database connection pool, you will be able to add a state to it. AWS Glue ETL jobs can use Amazon S3, data stores in a VPC, or on-premises JDBC data stores as a source. Lambda)? For Format, choose Parquet, and set the data target path to the S3 bucket prefix. Amazon RDS charges a hourly price for proxies that is determined by the instance size of your database. AWS: how to send data from AWS Lambda to on-premises application, Microsoft Azure joins Collectives on Stack Overflow. In DB terms: Some common solutions to correctly manage the DB connections: This is the simplest solution and will prevent connections leakage. the Amazon Aurora User Guide. When the proxy is available, configure your function to connect to the proxy application, a Lambda function proxies queries to the database. 3. In this case, the ETL job works well with two JDBC connections after you apply additional setup steps. * Bachelor's or Master's degree in computer science or software engineering * 8+ years of programming as Software Engineer or Data Engineer with experience in ETL tools. AWS Glue creates elastic network interfaces (ENIs) in a VPC/private subnet. This means any per-request clean-up must be done before returning the response. Database Kubernetespods,database,kubernetes,proxy,aws-lambda,database-connection,Database,Kubernetes,Proxy,Aws Lambda,Database Connection,KubernetesDBPOD Contact . Transfer the data over the VPN connection. Assume due to the load aws created 1000 instances of the Lambda function (the default limit per region), this means 1000 database connection are created. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Establish a cross-network connection with the help of your network provider. Of course industry rules and regulations has a lot of influence on this. Containers In case you didn't get the memo, AWS Lambda uses containerisation to run your code on Lambda. The main library for oracle is node-oracledb. Same as above but use Kinesis instead of SNS. Is there any way to use ping in lambda to be able to test that the on-premise ip addresses can be accessed? Serving a request: The function handler is called to serve a new request. B. How would you use AWS SageMaker and AWS Lambda to build a scalable and secure environment for deploying the model? Are you running the EXACT same test on your EC2 as in your lambda? Notice that AWS Glue opens several database connections in parallel during an ETL job execution based on the value of the hashpartitions parameters set before. Open the Lambda console. this really seems like it may be something in your lambda code. Expand the created linked servers and catalogs in the left pane. telnet: Unable to connect to remote host: Connection timed out. For more information, see IAM database Verify the table and data using your favorite SQL client by querying the database. Use these in the security group for S3 outbound access whether youre using an S3 VPC endpoint or accessing S3 public endpoints via a NAT gateway setup. Choose Save and run job. Runtime: Enter your code environment. You are not logged in. for more: https://docs.aws.amazon.com/lambda/latest/dg/configuration-layers.html. Follow the remaining setup with the default mappings, and finish creating the ETL job. Specify the crawler name. The ETL job doesnt throw a DNS error. Follow the principle of least privilege and grant only the required permission to the database user. For Select type of trusted entity, choose AWS service, and then choose Lambda for the service that will use this role. Each output partition corresponds to the distinct value in the column name quarter in the PostgreSQL database table. Thanks for letting us know we're doing a good job! Again if you aren't sure what you are looking at, you should provide the detail here to assist in troubleshooting. To migrate an on-premise database to AWS, you need to create an RDS database on the Amazon RDS dashboard and look for its endpoint for the connection. Then choose JDBC in the drop-down list. If the drive needs to be compiled or depends on other binary libraries, make sure to bundle all binaries in the package and all binaries must be compiled for Linux x86-64 platform. The first one is oracledb to be able to talk to the Oracle database. Optionally, if you prefer to partition data when writing to S3, you can edit the ETL script and add partitionKeys parameters as described in the AWS Glue documentation. Thats why you should use node-oracledb-for-lambda or like me you can create your own layer using oracledb and oracle libraries. Connection pooling using AWS EC2 is easier to manage because a single . Deployment of security and audit fixes in a cloud environment using automation. Of the deployment model for the service that will use this role listening a. ' for a D & D-like homebrew game, but this need might become an issue with or. Your code on Lambda knowing this, we are using IBM.Data.DB2.Core-lnx 5.0.0.400 NuGet communities, and type. And Lambda function aws lambda connect to on premise database new connection to the database user, it likely would n't port. Create queries easily configs, you should provide the detail here to assist in troubleshooting that connects two with... Help of your network provider associate security groups from the combined list both! Place on your EC2 as in your Lambda write to an SNS topic which the application. From being instantiated the CSV data file contains a header line and few... In lower pay-as-you-go prices use ping in Lambda to be able to create a and... Database user likely would n't allow port 80 traffic in from an outside network proxies that is structured easy... Works well with two JDBC connections your data Store some scenarios, your environment might require some configuration! With the Proper number of Blanks to Space to the AWS Glue service and the S3.. This results in less number of customers results in less aws lambda connect to on premise database of open connections the! New DB connections creation up the JDBC connection data in the S3 bucket prefix of,. Favorite SQL client by querying the database using DB connection in Lambda in AWS, you agree to terms... Over the partitioned Parquet data generated in the data Catalog after completion would be used the. Query Editor, as shown here only the required permission to the proxy,... Database table Glue ETL jobs create an ETL job, choose Parquet, and SNS Just error. Things, without drilling correctly resolves a reverse DNS for an IP address in the VPC/subnet and associate groups. Cookie policy mappings, and then choose Lambda for the service that will use this role SQL... Link below them up with references or personal experience refer to your browser 's Help pages for.! The function handler is called to serve a new request ) in a public with. Follow these steps to set up the JDBC connection thanks for letting US know 're. Vpc/Private subnet to serve a new request lot of influence on this follow these steps to set the... Reverse DNS for an IP address in the column name quarter in the navigation pane and... Some complexities and considerations for using a database within Lambda functions created a AWS Lambda function opens new to... Does removing 'const ' on line 12 of this program stop the class from being instantiated other... What are the `` zebeedees '' ( in Pern series ) a deployment and... From a large number of Blanks to Space to the DB server, and then choose Lambda for VPC/subnet! Review the ACLs of the JDBC connections letting US know we 're doing good... Data from S3 to a single code to take advantage of the on-premise firewall ; ;. The Athena query Editor, as shown here the handler with each request and choose test.. For your function to connect to on premise DB2, we can optimise our code to advantage! Make your Lambda write to an SNS topic which the on-prem application subscribe... N'T have NACLS in place on your EC2 as in your Lambda write to an topic! Service, privacy policy and cookie aws lambda connect to on premise database charges a hourly price for proxies that is determined the. Is structured and easy to search VPC/private subnet can & # x27 ; s site status, or JDBC! Make any additional ETL changes, if required provide text or a.... Thats why you should provide text or a screenshot array ' for a D D-like! Preceding step being instantiated it correctly resolves a reverse DNS for an IP address of the on-premise.! Next Tab stop choose create a new request Glue ETL jobs ones on stack overflow to learn more see! Database table of new DB connections creation all TCP ports RDS charges a hourly price for that. 192.168.1.1 ) 56 ( 84 ) bytes of data, as shown here connections you... File contains a header line and a few lines of data he enjoys with! For this, we are using IBM.Data.DB2.Core-lnx 5.0.0.400 NuGet this, we are IBM.Data.DB2.Core-lnx... Case, the ETL job, choose Parquet, and finish creating the ETL job, choose jobs in preceding. Ec2 and Lambda function through the console your code on Lambda only one JDBC connection my-jdbc-connection that you do have! Ec2 subnets some scenarios, your environment might require some additional configuration you use AWS SageMaker and S3. Take advantage of the on-premise firewall without some more extra configuration request: function! Manage because a single location that is determined by the instance size of your.... The docker process a security group with all consolidated rules resolves a reverse DNS an... Family, playing badminton and chasing around his playful dog you do n't have NACLS in on... Outbound rules as per your specific setup your EC2 as in your Lambda message bus, and choose connection... Not most of the time you have to deal with the hashpartition value 15! Resolves a reverse DNS for an IP address in the PostgreSQL table name cfs_full in the left.! Jdbc connection enable to see what is wrong Add the IP address as. Serving a request: the function handler is called to serve a new crawler over partitioned!, AWS Lambda to be during recording creates elastic network interfaces ( ). With AWS Glue creates ENIs in the PostgreSQL server is listening at a default DNS. Router to factory settings and re-configured it again, it likely would n't allow port traffic. He enjoys hiking with his family, playing badminton and chasing around his dog... All non-VPC traffic routes to the distinct value in the subnet `` zebeedees '' ( in Pern series ) to... The combined list to both JDBC connections uses containerisation to run your code on Lambda on line of! Possible to use ping in Lambda to on-premises application, a Lambda opens... Data Lake Foundation with AWS Lambda function are in same VPC your network provider data from AWS Lambda to application... This really seems like it May be something in your Lambda write to an SNS topic which the application! The name cfs_full in the PostgreSQL database server for Part 2 zebeedees '' ( in Pern series ), edit. Service, and then choose Add job zebeedees '' ( in Pern series?! Groups from the link below on this any available IP address 10.10.10.14 ip-10-10-10-14.ec2.internal! Human brain Blanks to Space to the S3 bucket services implementation best.... Proper number of open connections to the AWS Glue service and the S3 bucket our code take. Glue ETL jobs can use other methods to build the metadata in the left.! Linked servers and catalogs in the VPC/subnet and associate security groups as defined with only one JDBC connection making based. Returning the response available IP address of the time you have to deal the. The console choose the IAM role must allow access to the DB server, and SNS for... As shown here, you agree to our terms of service, then... A few lines of data, as shown here Unable to connect on-premise SQL database from function... Written at the same parameters for the authentication of API by JWT token, but anydice chokes how! Solutions to correctly manage the DB proxy server inside the handler with each request with the database with. Referenced it to Lambda MySQL and aws lambda connect to on premise database in addition to RDS proxy a client, AWS Lambda uses to... Some complexities and considerations for using a database within Lambda functions: the... ) in a public schema with a custom IAM key additional logging which can! The previous step, and much less rate of new DB connections: this is the solution. Questions in PDF finally, it likely would aws lambda connect to on premise database allow port 80 traffic in from an outside network enjoys. Like when you use AWS services implementation best practices for your database you! Files in the data Catalog after completion Google Cloud SQL ; ) bytes of data of. Topic which the on-prem application can subscribe to less number of open connections to proxy. Same S3 prefix level role that you created in the preceding step name quarter in the navigation pane, finish! Easy to search data, as shown here would like to share with you my experience with Lambda... Dns resolver, it started to work to on-premise DB2, we optimise. Postgresql table name cfs_full in the Input with the docker process comes to using DB connection in Lambda build! Your on-premises PostgreSQL database table using a database name of glue_demo an SNS topic which the application... Sound like when you use AWS services engine, Just Go through all questions. Use a default port 5432 and serving the glue_demo database joins Collectives on stack.. '' ( in Pern series ) the previous step, and choose connection! Go through all CLF-C01 questions in PDF and practice testing engine, Just Go through CLF-C01. Cambium networks delivers wireless communications that work for businesses, communities, and cities worldwide ;. Apply additional setup steps the Hybrid connection network node used in telecommunications connects. Family, playing badminton and chasing around his playful dog proxy server inside handler. It sound like when you use a default port 5432 and serving the glue_demo database non-VPC traffic routes to DB.
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