We use postgres and pgbouncer as kernel DB for one huge project. Some secure requirements:
/etc/security/limits.conf
soft nofile 65535
hard nofile 65535
/etc/sysctl.conf
fs.file-max = 1000000
fs.inotify.max_user_watches = 1000000
soft nofile 65535
hard nofile 65535
/etc/sysctl.conf
fs.file-max = 1000000
fs.inotify.max_user_watches = 1000000
Don`t forget to remove # at /etc/pam.d/login (remarked by default). And how to change nolimit on the fly.
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