![]() Other things you might want from this kind of automation include: That’s it! Complete versions of both scripts can be found (). Psql -c "SELECT pg_terminate_backend(pg_stat_activity.pid) FROM pg_stat_activity WHERE pg_stat_activity.datname = '$')\gexec" | psql Next, we terminate any existing database connections: We’ll start by receiving an input parameter and setting a few uninteresting variables: This time, there will be no secrets to worry about. The next script will take the SQL dump produced above and load it into a database running locally. # .sql:575: ERROR: role "rdsadmin" does not existĪnd that’s it! The script can be run like this: # The `-no-privileges` option is important to avoid an error upon restore like: Pg_dump -no-privileges -h localhost -p 5433 -file "$filename" Ssh -f -o ExitOnForwardFailure=yes -L localhost:5433:"$PGHOST":$db_port -i "$DB_SSH_KEY" sleep 10Ĭheck out () for more details on those arguments.įinally, we connect through the tunnel and dump the database: It opens a tunnel and waits (ten seconds) for something to connect to it: Now comes an SSH tunnel, created using a cool trick I found on this gist from GitHub user scy. The exported ones are for ():ĭb_host=project-db-dev.xx.xx. Note the instructions to future developers about where to find the secrets. (you can find the file in the team password manager)" I don’t want to include sensitive secrets, though, so I left those out and read them through environment variables:Įcho "Please set a DB_PASSWORD environment variable in order to connect to the RDS Database."Įcho "You may be able to retrieve it with:"Įcho " aws secretsmanager get-secret-value -secret-id arn:aws:secretsmanager:xx:xx:xx:xx"Įcho "Please set an DB_SSH_KEY environment variable to the path to the db-ssh-key.pem file. Because this script is checked into private source control and only intended for developers on this project, I don’t mind hardcoding project-specific strings. The first script backs up a remote database, leaving an SQL dump on disk. The database is not publicly accessible, but we have an EC2 instance that individual developers (with whitelisted IPs) can () through to access it. This time around, it’s a Postgres database in AWS (). I’ve written various scripts like this for various tech stacks over the years. In this post, I’ll walk through my latest shell scripts for backing up a remote Postgres database and loading it locally. You must manually resize the tablespace to reclaim the unused space.It seems like every web project inevitably has a development need to clone production data locally. The free blocks can be reused when new data is inserted. When data is deleted from a tablespace, the size of the tablespace doesn't shrink. For more information, see How do I resolve problems that occur when Amazon RDS DB instances run out of storage? To fix this issue, you must add storage space to your instance. If the allocated storage for the RDS instance is fully utilized, then the instance switches to the STORAGE_FULL state, and tablespaces can't be extended. When you insert data into the tablespace, the tablespace increases as required up to either the configured maximum limit for that tablespace or the configured allocated storage for the RDS instance, whichever is smaller. The maximum size of bigfile tablespaces is 16 TiB. The db_files might need to be tweaked when the number of datafiles reaches this limit.īy default, the tablespaces in RDS for Oracle are bigfile with AUTOEXTEND turned on. ![]()
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