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Doc: improve recommended systemd unit file. 

Add
    After=network-online.target
    Wants=network-online.target
to the suggested unit file for starting a Postgres server.
This delays startup until the network interfaces have been
configured; without that, any attempt to bind to a specific
IP address will fail.

If listen_addresses is set to "localhost" or "*", it might be
possible to get away with the less restrictive "network.target",
but I don't think we need to get into such detail here.

Per suggestion from Pablo Federico.

Discussion: https://postgr.es/m/166552157407.591805.10036014441784710940@wrigleys.postgresql.org
This commit is contained in:
Tom Lane 2022-10-12 10:51:11 -04:00
parent ab35b9dd79
commit 02d43ad626
1 changed files with 2 additions and 0 deletions
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doc/src/sgml/runtime.sgml
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@ -387,6 +387,8 @@ fi
[Unit]
Description=PostgreSQL database server
Documentation=man:postgres(1)
After=network-online.target
Wants=network-online.target
[Service]
Type=notify