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https://github.com/superseriousbusiness/gotosocial.git
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782169da76
* [chore] set max open / idle conns + conn max lifetime for both postgres and sqlite * reduce cache size default to 8MiB, reduce connections to 2 * cpu * introduce max open conns multiplier, tune sqlite and pg separately * go fmt
167 lines
6.9 KiB
Markdown
167 lines
6.9 KiB
Markdown
# Database
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GoToSocial stores statuses, accounts, etc, in a database. This can be either [SQLite](https://sqlite.org/index.html) or [Postgres](https://www.postgresql.org/).
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By default, GoToSocial will use Postgres, but this is easy to change.
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## SQLite
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SQLite, as the name implies, is the lightest database type that GoToSocial can use. It stores entries in a simple file format, usually in the same directory as the GoToSocial binary itself. SQLite is great for small instances and lower-powered machines like Raspberry Pi, where a dedicated database would be overkill.
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To configure GoToSocial to use SQLite, change `db-type` to `sqlite`. The `address` setting will then be a filename instead of an address, so you will want to change it to `sqlite.db` or something similar.
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Note that the `:memory:` setting will use an *in-memory database* which will be wiped when your GoToSocial instance stops running. This is for testing only and is absolutely not suitable for running a proper instance, so *don't do this*.
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## Postgres
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Postgres is a heavier database format, which is useful for larger instances where you need to scale performance, or where you need to run your database on a dedicated machine separate from your GoToSocial instance (or do funky stuff like run a database cluster).
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You can connect to Postgres using either a Unix socket connection, or via TCP, depending on what you've set as your `db-address` value.
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GoToSocial also supports connecting to Postgres using SSL/TLS over TCP. If you're running Postgres on a different machine from GoToSocial, and connecting to it via an IP address or hostname (as opposed to just running on localhost), then SSL/TLS is **CRUCIAL** to avoid leaking data all over the place!
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When you're using Postgres, GoToSocial expects whatever you've set for `db-user` to already be created in the database, and to have ownership of whatever you've set for `db-database`.
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For example, if you set:
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```text
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db:
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[...]
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user: "gotosocial"
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password: "some_really_good_password"
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database: "gotosocial"
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```
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Then you should have already created database `gotosocial` in Postgres, and given ownership of it to the `gotosocial` user.
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The psql commands to do this will look something like:
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```psql
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create database gotosocial with locale C.UTF-8 template template0;
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create user gotosocial with password 'some_really_good_password';
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grant all privileges on database gotosocial to gotosocial;
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```
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GoToSocial makes use of ULIDs (Universally Unique Lexicographically Sortable Identifiers) which will not work in non-English collate environments. For this reason it is important to create the database with `C.UTF-8` locale. To do that on systems which were already initialized with non-C locale, `template0` pristine database template must be used.
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## Settings
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```yaml
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############################
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##### DATABASE CONFIG ######
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############################
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# Config pertaining to the Gotosocial database connection
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# String. Database type.
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# Options: ["postgres","sqlite"]
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# Default: "postgres"
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db-type: "postgres"
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# String. Database address or parameters.
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#
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# For Postgres, this should be the address or socket at which the database can be reached.
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#
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# For Sqlite, this should be the path to your sqlite database file. Eg., /opt/gotosocial/sqlite.db.
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# If the file doesn't exist at the specified path, it will be created.
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# If just a filename is provided (no directory) then the database will be created in the same directory
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# as the GoToSocial binary.
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# If address is set to :memory: then an in-memory database will be used (no file).
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# WARNING: :memory: should NOT BE USED except for testing purposes.
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#
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# Examples: ["localhost","my.db.host","127.0.0.1","192.111.39.110",":memory:", "sqlite.db"]
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# Default: ""
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db-address: ""
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# Int. Port for database connection.
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# Examples: [5432, 1234, 6969]
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# Default: 5432
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db-port: 5432
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# String. Username for the database connection.
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# Examples: ["mydbuser","postgres","gotosocial"]
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# Default: ""
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db-user: ""
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# String. Password to use for the database connection
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# Examples: ["password123","verysafepassword","postgres"]
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# Default: ""
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db-password: ""
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# String. Name of the database to use within the provided database type.
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# Examples: ["mydb","postgres","gotosocial"]
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# Default: "gotosocial"
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db-database: "gotosocial"
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# String. Disable, enable, or require SSL/TLS connection to the database.
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# If "disable" then no TLS connection will be attempted.
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# If "enable" then TLS will be tried, but the database certificate won't be checked (for self-signed certs).
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# If "require" then TLS will be required to make a connection, and a valid certificate must be presented.
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# Options: ["disable", "enable", "require"]
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# Default: "disable"
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db-tls-mode: "disable"
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# String. Path to a CA certificate on the host machine for db certificate validation.
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# If this is left empty, just the host certificates will be used.
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# If filled in, the certificate will be loaded and added to host certificates.
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# Examples: ["/path/to/some/cert.crt"]
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# Default: ""
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db-tls-ca-cert: ""
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# Int. Number to multiply by CPU count to set permitted total of open database connections (in-use and idle).
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# You can use this setting to tune your database connection behavior, though most admins won't need to touch it.
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#
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# Example values for multiplier 8:
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#
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# 1 cpu = 08 open connections
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# 2 cpu = 16 open connections
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# 4 cpu = 32 open connections
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#
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# Example values for multiplier 4:
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#
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# 1 cpu = 04 open connections
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# 2 cpu = 08 open connections
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# 4 cpu = 16 open connections
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#
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# A multiplier of 8 is a sensible default, but you may wish to increase this for instances
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# running on very performant hardware, or decrease it for instances using v. slow CPUs.
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#
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# If you set this to 0 or less, it will be adjusted to 1.
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#
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# Examples: [16, 8, 10, 2]
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# Default: 8
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db-max-open-conns-multiplier: 8
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# String. SQLite journaling mode.
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# SQLite only -- unused otherwise.
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# If set to empty string, the sqlite default will be used.
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# See: https://www.sqlite.org/pragma.html#pragma_journal_mode
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# Examples: ["DELETE", "TRUNCATE", "PERSIST", "MEMORY", "WAL", "OFF"]
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# Default: "WAL"
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db-sqlite-journal-mode: "WAL"
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# String. SQLite synchronous mode.
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# SQLite only -- unused otherwise.
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# If set to empty string, the sqlite default will be used.
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# See: https://www.sqlite.org/pragma.html#pragma_synchronous
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# Examples: ["OFF", "NORMAL", "FULL", "EXTRA"]
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# Default: "NORMAL"
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db-sqlite-synchronous: "NORMAL"
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# Byte size. SQlite cache size.
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# SQLite only -- unused otherwise.
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# If set to empty string or zero, the sqlite default (2MiB) will be used.
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# See: https://www.sqlite.org/pragma.html#pragma_cache_size
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# Examples: ["0", "2MiB", "8MiB", "64MiB"]
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# Default: "8MiB"
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db-sqlite-cache-size: "8MiB"
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# Duration. SQlite busy timeout.
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# SQLite only -- unused otherwise.
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# If set to empty string or zero, the sqlite default will be used.
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# See: https://www.sqlite.org/pragma.html#pragma_busy_timeout
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# Examples: ["0s", "1s", "30s", "1m", "5m"]
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# Default: "5s"
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db-sqlite-busy-timeout: "5m"
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```
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