I have a postgres instance set up using AWS lightsail and would like to incorporate CRON functionality into the server. pg_cron is sufficient for what I want to do, but does anyone know how I might do that if I am using docker containers?
Related
I was trying to figure-out how we can schedule to refresh the materialized view on azure postgres database single server which is in azure cloud, one solution is to use pg_cron extension, but it
seems it is only available on azure flexible postgres database server and not on azure postgres database single server, I did not get any other option available, any suggestion in this regard will be really helpful.
I did not find any postgres scheduler extension for the db hosted on Azure, so created one microservice to schedule the db functions.
Example Link
Is there an official way of installing an extension on a GCP Postgress Cloud SQL instance via Terraform?
Closest I've found is this unofficial Postgres resource but it's not immediately clear how to link the two. This issue on their tracker sort of shows how, but far from a step by step guide.
if it makes any difference, I'm trying to provision a Postgres Cloud SQL instance with PostGIS.
Thanks.
Terraform is a deployment tool, to create all your infrastructure. To install an extension on Postgres, you need a installation tool, because you need to connect to the database and to run a command.
It's the same thing if you want to create a user in the database and you want to grant some privileges on it.
In summary, you can't achieve that with Terraform. I recommend you to have an installation tool, such as Ansible to perform this action.
An alternative is to create, with Terraform, a micro VM with a startup script that connect the database, run the command and destroy itself at the end.
I want to understand AWS Relational Database Service (RDS) and discover benefits from using it.
Why RDS is better than manually installed PostgreSQL database in EC2 instance?
Is it possible to connent existing database in EC2 instance with Amazon RDS?
How it really works?
How I should automation RDS?
When I want create new database in existing EC2 instance I can use Ansible in simply way. How I should connect my application with database which uses RDS ?
Thanks in advance!
I want to understand AWS Relational Database Service (RDS) and discover benefits from using it.
As already commented, read the docs and whitepapers.
Why RDS is better than manually installed PostgreSQL database in EC2 instance?
you can be sure it is well setup, you will get point in time recovery, backups and high availability. As well you can set it up yourself, however using RDS you have it all already configured.
Ifs it possible to connent existing database in EC2 instance with Amazon RDS? How it really works?
you don't have access to any underlying configuration, so nope, you cannot really connect ec2 database w/ rds (e. g. wal for wal streaming).
you still can use database migration tools to migrate all databases and updates to or from rds
How I should automation RDS? When I want create new database in existing EC2 instance I can use Ansible in simply way.
you can use a cloudformation template or cli commands
How I should connect my application with database which uses RDS ?
when you create a rds instance, you will define an admin user and receive a connection url
https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_VPC.Scenarios.html#USER_VPC.Scenario1
I have been using Docker and Kubernetes for a while now, and have set up a few databases(postgres and mysql) and services.
Now I was looking at adding a mongoDB, but it seems different when it comes to user management.
Take for example postgres:
https://hub.docker.com/_/postgres/
Immediately I can declare users with a password on setup and then connect using this. It seems the mongo image does not support this. Is there a way to simply declare users on startup and use them similar to the postgres setup? This is, without having to exec into the image, modify auth settings and restarting the mongo service.
In aws, I have an amazon linux instance running with docker installed and my app running as a container. It's running in tomcat. However I need to connect it to my database.
I have made this work with a postgres container earlier doing this:
docker run --link <dbcontainername>:db -P -d tomcat-image
But to have the database more reliable it is wanted to use amazon RDS instead.
I have created a VPC with two subnets which both the instance and the RDS uses
And they are also both in the same Security Group.
I am able to access the tomcat fine through the public ip, but it throws errors because it isn't connected to the db.
Networking is not my strong suit, so there might be something there I am missing, but I find it hard to find any text describing this process without mentioning Elastic bean stalk.(It is my impression that it should be possible to do everything EBS does, manually)
There's a similar question asked here about 8 months ago, but he didn't get any responses so I'm trying again.