"No similarly named formulae found" when trying to install MongoDB on macOS

Question

I'm trying to install MongoDB server on macOS Big Sur using brew, I'm following the documentation on the official mongo website.
I run the following command:

brew tap mongodb/brew

after that, I run:

brew install [email protected]

but I got the following error:

Error: No similarly named formulae found.
Error: No available formula with the name "mongosh" (dependency of mongodb/brew/mongodb-community).
It was migrated from mongodb/brew to homebrew/core.

Answer 1

As the error message shows, you need to first install mongosh(https://github.com/mongodb-js/mongosh#readme).

Steps:

1. brew update
2. brew install mongosh
3. brew install mongodb-community .

Should fix your problem.

Answer 2

Steps:

1. brew untap mongodb/brew
2. brew tap mongodb/brew
3. brew install mongodb-community

fix my problem.

Answer 3

For me homebrew-core was not tapped properly.

 brew doctor


Warning: Homebrew/homebrew-core was not tapped properly! Run:
  rm -rf "/opt/homebrew/Library/Taps/homebrew/homebrew-core"
  brew tap homebrew/core

Warning: Some taps are not on the default git origin branch and may not receive
updates. If this is a surprise to you, check out the default branch with:
  git -C $(brew --repo homebrew/core) checkout master

We need to remove and tap homebrew/core again.

rm -rf "/opt/homebrew/Library/Taps/homebrew/homebrew-core"
brew tap homebrew/core

After this we need to tap mongodb/brew

brew tap mongodb/brew

And then install mongodb-community

brew install mongodb-community

It worked for me.