How do I cleanly shutdown mongodb from node.js? - node.js

Question

I am running mongodb as a child process from node.js and require to shut down and restart on demand. using Child_Process.kill("SIGINT") would appear to be the correct way but but it leaves mongo in a confused state which won't restart until repaired (or the lockfile is deleted) Is there a better way to do this?
Thanks,
Andy

Answer 1

Doing kill("SIGINT") cause the database to shut down without going through the required steps and could lead to corrupt data files. So i would not recommend do this.
Normal way to stop database is send command { "shutdown" : 1 } or db.shutdownServer() from mongodb shell, but I don't know exactly how to do it from node.js driver.

Answer 2

you can try something like this:
var MongoClient = require('mongodb').MongoClient;
MongoClient.connect("mongodb://localhost:27017/admin", function(err, db) {
if (err) {
console.log('mongodb is not running');
process.exit(0);
}
else {
db.command({
shutdown : 1
}, function(err, result) {
console.log('shutting down mongodb - ', err.message);
process.exit(0);
});
}
});

Answer 3

you could end a mongodb process using nodeJS on mac
1) save the script below to a script.js
'use strict'
const exec = require('child_process').execSync;
function killport(port) {
var processId = null
try {
processId = exec(`lsof -t -i:${port}`);
} catch (e) {
console.log("could not catch");
}
if (processId !== null) { // if exists kill
try{
if(exec(`kill ${processId}`)){
console.log("closed");
}
} catch(e){
console.log("error executing");
}
}
}
killport(27017);
2) run node script.js