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postgres | postgres | ||
| − | + | == Configuration files == | |
| − | + | * <code>/etc/postgresql/10/main/[[postgresql.conf]]</code> | |
| − | + | * <code>/etc/postgresql/10/main/[[pg_hba.conf]]</code> (PostgreSQL Client Authentication Configuration File) | |
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| − | == Configuration | ||
| − | * <code>/etc/postgresql/ | ||
| − | * <code>/etc/postgresql/ | ||
# "local" is for Unix domain socket connections only | # "local" is for Unix domain socket connections only | ||
local all all md5 | local all all md5 | ||
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== [[PostgreSQL logs]] == | == [[PostgreSQL logs]] == | ||
| − | *<code>[[/var/log | + | *<code>[[/var/log/]]postgresql</code> |
== Basic Commands== | == Basic Commands== | ||
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* Connect to a PostgreSQL database: <code>[[psql]] -h localhost -U postgres -d somedb</code><ref>http://postgresguide.com/utilities/psql.html</ref> | * Connect to a PostgreSQL database: <code>[[psql]] -h localhost -U postgres -d somedb</code><ref>http://postgresguide.com/utilities/psql.html</ref> | ||
* Connect to a PostgreSQL database with a timeout of 5 seconds: <code>env PGCONNECT_TIMEOUT=5 psql -h localhost -U postgres -d somedb</code><ref>http://postgresguide.com/utilities/psql.html</ref> | * Connect to a PostgreSQL database with a timeout of 5 seconds: <code>env PGCONNECT_TIMEOUT=5 psql -h localhost -U postgres -d somedb</code><ref>http://postgresguide.com/utilities/psql.html</ref> | ||
| − | * [[Show databases]]: | + | * [[Show databases]]: <code>SELECT datname FROM pg_database WHERE datistemplate = false;</code> |
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* Show tables: <code>\dt</code> or <code>SELECT * FROM [[pg_catalog]].pg_tables;</code><ref>https://stackoverflow.com/questions/769683/show-tables-in-postgresql</ref> | * Show tables: <code>\dt</code> or <code>SELECT * FROM [[pg_catalog]].pg_tables;</code><ref>https://stackoverflow.com/questions/769683/show-tables-in-postgresql</ref> | ||
| − | * [[Show users]]: <code> | + | * [[Show users]]: <code>\du</code> |
* Drop DB: <code>[[dropdb]] DB_NAME</code> | * Drop DB: <code>[[dropdb]] DB_NAME</code> | ||
* Describe ''employees'' table: <code>\d employees</code> | * Describe ''employees'' table: <code>\d employees</code> | ||
| − | * Show/List [[schema]]s: <code>select | + | * Show/List [[schema]]s: <code>select nspname from pg_catalog.pg_namespace;</code><ref>https://dba.stackexchange.com/questions/40045/how-do-i-list-all-schemas-in-postgresql</ref> |
* Show version: <code>[[SELECT version();]]</code> | * Show version: <code>[[SELECT version();]]</code> | ||
| − | * Create backup: use <code>pg_dump</code> <ref>https://www.postgresql.org/docs/current/static/app-pgdump.html</ref> and <code> | + | * Create backup: use <code>pg_dump</code> <ref>https://www.postgresql.org/docs/current/static/app-pgdump.html</ref> and <code>~/.pgpass</code> file for automating login. |
* Create user: | * Create user: | ||
** <code>[[create user]] <username></code> | ** <code>[[create user]] <username></code> | ||
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| − | * <code> | + | * <code>[[systemctl status postgresql]]</code> |
| + | * <code>[[systemctl stop]] postgresql</code> | ||
| + | * <code>[[systemctl start]] postgresql</code> | ||
| − | + | * <code>[[\l]]</code> | |
| − | * <code>[[\l | ||
== Processs == | == Processs == | ||
* [[wal]] writer process | * [[wal]] writer process | ||
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== Related terms == | == Related terms == | ||
| − | * [[ | + | * <code>[[/var/lib/postgresql/]]</code> |
* <code>[[pg_upgradecluster]]</code> | * <code>[[pg_upgradecluster]]</code> | ||
* [[Adminer]] | * [[Adminer]] | ||
| + | * {{TOC operation databases}} | ||
| + | * [[ALTER DATABASE]] | ||
* [[Amazon Redshift]] | * [[Amazon Redshift]] | ||
| − | + | * [[PostgreSQL statistics collector]]: <code>[[pg_stat]]*</code> | |
| − | + | * [[MVCC]] | |
| − | * | + | * [[Master]] user, [[Index (PostgreSQL)]] |
| − | * [[ | ||
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* [[Greenplum]] | * [[Greenplum]] | ||
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== Activities == | == Activities == | ||
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== See also == | == See also == | ||
| + | * {{SQL}} | ||
| + | * {{PostgreSQL}} | ||
* [[Patroni]] [[HA]] solution for PostgreSQL that requires <code>[[etcd]]</code>, <code>[[Zookeeper]]</code>, or <code>[[Consul]]</code> | * [[Patroni]] [[HA]] solution for PostgreSQL that requires <code>[[etcd]]</code>, <code>[[Zookeeper]]</code>, or <code>[[Consul]]</code> | ||
| − | * {{ | + | * {{DBs}} |
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[[Category:PostgreSQL]] | [[Category:PostgreSQL]] | ||
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