cristopher-rodrigues

db.copyDatabase("oldDb","newDb","connection")
use oldDb
db.dropDatabase();

cristopher-rodrigues

var options = {
  server: { socketOptions: { keepAlive: 1, connectTimeoutMS: 30000 } },
  replset: { socketOptions: { keepAlive: 1, connectTimeoutMS: 30000 } }
};
mongoose.connect(secrets.db, null, options);

cristopher-rodrigues

openssl genrsa -out server-key.pem 2048
openssl req -new -key server-key.pem -out server-csr.pem
OR 
openssl req -new -newkey rsa:2048 -nodes -keyout server.key -out server.csr

and
openssl x509 -req -in server-csr.pem -signkey server-key.pem -out server-cert.pem


past in ssl provider: cat server-csr.pem

cristopher-rodrigues

db.getCollectionNames().forEach(function(collection) {
   indexes = db[collection].getIndexes();
   print("Indexes for " + collection + ":");
   printjson(indexes);
});

cristopher-rodrigues

agregação var = MyModel.aggregate (...);
aggregation.options = {allowDiskUse: true};
aggregation.exec (function () {});

cristopher-rodrigues

Save file /etc/init/yourapp.conf

#!upstart
description "Upstart script for yourapp Server"

start on startup
stop on shutdown

expect fork

cristopher-rodrigues

export LANGUAGE=en_US.UTF-8
export LANG=en_US.UTF-8
export LC_ALL=en_US.UTF-8
locale-gen en_US.UTF-8
dpkg-reconfigure locales

cristopher-rodrigues

db.collection.find({}).snapshot().forEach( function (obj) {
    obj.prop1 = obj.prop2;
    db.collection.save(obj); 
});

db.collection.find({}).snapshot().forEach( function (obj) {
    obj.prop1 = parseInt(obj.prop1);
    db.collection.save(obj); 
});

cristopher-rodrigues

db.collection
.aggregate(
 [
    {$match:{$text:{$search: "STRING"}, {/*wEVER*/}}},
    {$lookup:{from: 'otherCollectionJoin', localField: 'p', foreignField: '_id', as: 'otherCollectionJoin'}},
    {$unwind:"otherCollectionJoin"},
    {
      $group:{
        "_id":"$_id"
        , type: {$addToSet: "otherField"}

cristopher-rodrigues

check UFW status

ufw status

OPEN 22

ufw allow 22

UFW ENABLE