無法將用戶切換為postgres.

postgres用戶的ulimit設置設置了合理的限制.我們沒有達到最高限度.

/ var / log / messages中沒有錯誤.

BETA -bash-4.2# sudo su - postgres

su: /bin/bash: Resource temporarily unavailable

設置：

BETA -bash-4.2# ps -auxww | grep -i postgr | wc -l

503

BETA -bash-4.2# lsof | grep -i postgr | wc -l

35225

BETA -bash-4.2#

適用于postgres流程的Ulimit.

BETA -bash-4.2# cat /proc/26230/limits

Limit Soft Limit Hard Limit Units

Max cpu time unlimited unlimited seconds

Max file size unlimited unlimited bytes

Max data size unlimited unlimited bytes

Max stack size 8388608 unlimited bytes

Max core file size 0 unlimited bytes

Max resident set unlimited unlimited bytes

Max processes 256580 256580 processes

Max open files 1024 4096 files

Max locked memory 65536 65536 bytes

Max address space unlimited unlimited bytes

Max file locks unlimited unlimited locks

Max pending signals 256580 256580 signals

Max msgqueue size 819200 819200 bytes

Max nice priority 0 0

Max realtime priority 0 0

Max realtime timeout unlimited unlimited us

用netstat

BETA -bash-4.2# netstat -plan | grep -i post | grep ESTABLISHED | wc -l

496

BETA -bash-4.2#

Ulimit設置

BETA -bash-4.2# cat /etc/security/limits.d/postgres_limits.conf

# Limits settings for postgres

postgres soft nofile 4096

postgres hard nofile 4096

postgres soft nproc 400

postgres hard nproc 400

在我重新開始postgres之后,我能夠進入.

postgres用戶的資源工具.

BETA -bash-4.2# netstat -plan | grep -i post | grep ESTABLISHED | wc -l

1

BETA -bash-4.2#

BETA -bash-4.2# lsof | grep -i postgr | wc -l

309

BETA -bash-4.2# ps -auxww | grep -i postgr | wc -l

8

BETA -bash-4.2#

總結

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