Add a user into sudo on Linux

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Create a new user
root@server:~# adduser username
Adding user `username' ...
Adding new group `username' (1001) ...
Adding new user `username' (1001) with group `username' ...
Creating home directory `/home/username' ...
Copying files from `/etc/skel' ...
New password: 
Retype new password: 
passwd: password updated successfully
Changing the user information for username
Enter the new value, or press ENTER for the default
Full Name []:    
Room Number []: 
Work Phone []: 
Home Phone []: 
Other []: 
Is the information correct? [Y/n] y

Add the user into the sudo group
root@mserver:~# adduser username sudo
Adding user `username' to group `sudo' ...
Adding user username to group sudo
Done.

Switch to the new user account 
root@mal-eum:~# su - username
To run a command as administrator (user "root"), use "sudo <command>".
See "man sudo_root" for details.


username@server:~$

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mongoDB admin 권한 설정방법 How to enable access control for mongo DB

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** WARNING: Access control is not enabled for the database. ** Read and write access to data and configuration is unrestricted. 해결방법 Solution 요약 : mongoDB를 설치하면 기본적으로 admin이라는 db가 생성됩니다. 이 admin db에 앞으로 생성할 db와 user를 관리할 수 있는 administrator 계정을 생성합니다. 그리고 나서 administrator 계정을 통해 작업할 db와 그 db에 접근 가능한 user 계정을 만듭니다. 이후 user 계정으로 접속해 db 작업을 진행합니다. // How to enable access control for  mongo DB $ mongo connecting to: mongodb://127.0.0.1:27017 MongoDB server version: 3.4.10 Server has startup warnings: 2018-01-12T09:03:22.199+0900 I CONTROL  [initandlisten] 2018-01-12T09:03:22.199+0900 I CONTROL  [initandlisten] ** WARNING: Access control is not enabled for the database. 2018-01-12T09:03:22.199+0900 I CONTROL  [initandlisten] **          Read and write access to data and configuration is unrestricted. 2018-01-12T09:03:22.199+0900 I CONTROL  [initandlisten] // db list > show dbs admin 0.000GB local 0.000GB // Create the User Administrator &
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Install pm2 via yarn globally

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$ sudo yarn global add pm2 $ pm2 --version PM2 is a Production Process Manager for Node.js applications                      with a built-in Load Balancer.                 Start and Daemonize any application:                 $ pm2 start app.js                 Load Balance 4 instances of api.js:                 $ pm2 start api.js -i 4                 Monitor in production:                 $ pm2 monitor                 Make pm2 auto-boot at server restart:                 $ pm2 startup                 To go further checkout:                 http://pm2.io/
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Install node and yarn on Linux

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Install nodejs v8.x curl -sL https://deb.nodesource.com/setup_8.x | sudo -E bash - sudo apt-get install -y nodejs sudo apt-get install -y build-essential node --version Install yarn curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add - echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list sudo apt-get update && sudo apt-get install yarn yarn --version Update yarn sudo apt-get update && sudo apt-get install yarn
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