Postgresql server did not shutdown correctly
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【注意】最后更新于 January 18, 2021,文中内容可能已过时,请谨慎使用。
I setup Postgresql as database for Django and it works as a charm. However, today I got a error message when I tried to migrate my django.
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And sudo lsof -i :5432
returned nothing. It looks that my local database is down, so I tried brew services start postgresql@10
, and got message:
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I tried to restart postgresql, but it did not help.
Maybe there is a stuck lockfile somewhere? Here is a clue as well as a few workarounds. I examine the content of postmaster.pid
by cat /usr/local/var/postgresql@10/postmaster.pid
and kill the lock file by kill -9 <PID>
. Upon restarting the services, now it works again.
p.s. kill -9
might not be a good way to kill the process here. See the quote here:
No no no. Don’t use kill -9. It doesn’t give the process a chance to cleanly:
- shut down socket connections
- clean up temp files
- inform its children that it is going away
- reset its terminal characteristics
文章作者 ziyunch
上次更新 2021-01-18