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PostgreSQL
PostgreSQL is a powerful, open source object-relational database system with over 35 years of active development that has earned it a strong reputation for reliability, feature robustness, and performance.
Getting Started
# In `perSystem.process-compose.<name>`
{
services.postgres."pg1".enable = true;
}
Examples
- Run postgres server initialised with a sample database and graphically interact with it using pgweb: https://github.com/juspay/services-flake/tree/main/example/simple
Guide
{#init}
Creating users & tables
Assuming your initial schema is defined in ./scripts/db.sql
:
# In `perSystem.process-compose.<name>`
{
services.postgres."pg1" = {
enable = true;
initialScript.before = ''
CREATE USER myuser WITH password 'mypasswd';
'';
initialDatabases = [
{
name = "mydb";
schemas = [ ./scripts/db.sql ];
}
];
};
}
Gotchas
{#socket-path}
Unix-domain socket path is too long
Warning
Only relevant if
socketDir
is set. If not, postgres uses TCP/IP by default.
We already talk about this in the data directory guide. In case of postgres, you can set socketDir
while keeping the dataDir
unchanged.
Note
The
socketDir
must be set to a shorter path (less than 100 chars) as a workaround.
{
services.postgres."pg1" = {
enable = true;
socketDir = "/tmp/pg1";
};
}