I used chown It doesn't work.
Bilals-MBP:~ $ sudo mkdir -p /data/db
Password:
mkdir: /data/db: Read-only file system
I am not able to get Read and write permission I am using Catalina 10.15 maybe that's the problem ?
I downloaded MongoDB from Homebrew and I am able to see version on on command shell the only problem is whenever I use mongod then throws error and says Access is not allowed
I found a solution. After Catalina update Mac doesn't let us change permissions on /usr folder so we need to change directory of /data/db folders –
sudo mkdir -p /System/Volumes/Data/data/db
try this path if you also having same issue I have tried and worked for me.
This is what they said in their docoumentation:
Starting with macOS 10.15 Catalina, Apple restricts access to the MongoDB default data directory of /data/db. On macOS 10.15 Catalina, you must use a different data directory, such as /usr/local/var/mongodb.Starting with macOS 10.15 Catalina, Apple restricts access to the MongoDB default data directory of /data/db. On macOS 10.15 Catalina, you must use a different data directory, such as /usr/local/var/mongodb.
what you should do instead
1- Create the data directory.
sudo mkdir -p /usr/local/var/mongodb
2- Create the log directory.
sudo mkdir -p /usr/local/var/log/mongodb
3- Set permissions for the data and log directories.
sudo chown my_mongodb_user /usr/local/var/mongodb
sudo chown my_mongodb_user /usr/local/var/log/mongodb
you can see here the Full Documentation