mongodb-bugfix

mongodb killed by OS

To avoid mongodb to be killed by the OS, we can set its memory use limit down to a criterion which is lower than the free -h capacity.

free -h
#               total        used        free      shared  buff/cache   available
# Mem:           3.7G        1.3G        665M        6.7M        1.7G        2.1G
# Swap:            0B          0B          0B

You see, there is only 665M for free in ZKJ's server since he is running a background jupyter and doing some sophisticated data analysis and machine learning.

then I can add this into mongodb's config file:

# /etc/mongodb.conf
wiredTiger:
  engineConfig:
    cacheSizeGB: 0.25

reference:

• storage Options

• 解决 MongoDB 占用内存过大频繁死机的方法详解MongoDB脚本之家

• ubuntu - MongoDB stops unknown reason - Stack Overflow

• WiredTiger Storage Engine — MongoDB Manual

brew can't restart mongod

brew services stop -dv mongodb-community
brew services start -dv mongodb-community

Pay Attention to the parameter of -dv, it's key important.

Otherwise, I can't restart it!

reference: https://github.com/Homebrew/homebrew-core/issues/22924#issuecomment-357989567