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Linux memory will be limited; when migrating applications from the root user to an ordinary user, since the ordinary user will be limited to the maximum number of processes, when the number of processes is full, a memory limit error will occur. You can use "grep memlock /etc/security/limits.conf" command to view memory usage limits.
#The operating environment of this tutorial: linux7.3 system, Dell G3 computer.
Linux memory common commands
# 查看内存使用情况 free -m # 查看内存使用限制 grep memlock /etc/security/limits.conf # 查看SWAP使用积极度 cat /proc/sys/vm/swapiness # 查看内存回收阈值 grep -A 3 'pages free' /proc/zoneinfo # 查看内核分配策略 cat /proc/sys/vm/overcommit_memory # 在分配策略为2的情况下查看可分配内存 grep Com /proc/meminfo
Linux ordinary users will be limited by memory The problem
Migrate the application from the root user to the ordinary user test. Since the ordinary user will be limited to the maximum number of processes, when the number of processes is full, the following error occurs
/bin/bash: Resource temporarily unavailable.
Generally, the maximum number of processes for a new user is 4096
Edit two files
yanfa_ylcloud_java is what you want Users who increase the process
vi /etc/security/limits.d/20-nproc.conf
vi /etc/security/limits.conf
hard/soft: soft is a warning value, while hard is a real valve value, an error will be reported if it exceeds the value.
nproc: Maximum number of processes
nofile: Maximum number of open files
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