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44 lines
1.1 KiB
Markdown
44 lines
1.1 KiB
Markdown
# Check If The Local Server Is Running
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An install of PostgreSQL comes with a number of utilities including the
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`pg_isready` command. This command can be used to check if the local PostgreSQL
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server is up, running, and ready to receive connections.
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If the server has not yet been started, running the command will result in a
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`no response` response.
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```bash
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$ pg_isready
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localhost:5432 - no response
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```
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In this case, the `pg_ctl` command can be used to start the server.
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```bash
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$ pg_ctl -D $HOME/.asdf/installs/postgres/12.3/data start
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waiting for server to start....
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...
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done
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server started
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```
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It tells us that the server is started and we can confirm that by again running
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`pg_isready`.
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```bash
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$ pg_isready
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localhost:5432 - accepting connections
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```
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This command is most useful as part of a script, such as in a CI environment.
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In that case, you may not want it writing to `stdout`, you just want to use the
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command's exit code. For that, you can tack on the `--quiet` flag.
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```
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$ pg_isready --quiet
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```
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[source](https://www.postgresql.org/docs/current/app-pg-isready.html)
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