How to automatically delete idle client connections?

[Yu Watanabe <yu.w.tennis@xxxxxxxxx>]

Dear community.

I would like to ask a question regarding the below error occurred when using psql client.
My environment is postgresql 12.3 docker container.
https://hub.docker.com/layers/postgres/library/postgres/12.3/images/sha256-23839ca029051ca19072dc7f40b252ae8cbcd7ef632f7b8e2da09ba3abc60214?context=explore

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psql: error: could not connect to server: FATAL remaining connection slots are reserved for non-replication superuser connections
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It seems that this is caused by unused psql client sessions. Which was caused by closing the terminal without exiting the psql session correctly.

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postgres=# select usename,state,client_port from pg_stat_activity;
 usename  | state  | client_port
----------+--------+-------------
          |        |
 postgres |        |
 catseye  | idle   |          -1
 catseye  | idle   |       36718
 catseye  | idle   |          -1
 catseye  | idle   |       52960
 catseye  | idle   |       40854
...
###

I have tried setting  idle_in_transaction_session_timeout   , however, this does not delete idle sessions.

Would there be any expiry settings to delete client idle sessions automatically ?

My apology if this question was asked before but I appreciate it if someone gives me advice.

Best Regards,
Yu Watanabe

--

Yu Watanabe

linkedin: www.linkedin.com/in/yuwatanabe1/
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