diff --git a/.gitignore b/.gitignore
index 721cc02..59b2c0f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,5 @@
 node_modules
-keys.js
+dev.js
 _netrc
 
 # REACT CLIENT
diff --git a/config/keys.js b/config/keys.js
new file mode 100644
index 0000000..73fdb04
--- /dev/null
+++ b/config/keys.js
@@ -0,0 +1,9 @@
+// keys.js - figure out what set of credentials to return
+// NODE_ENV - variável do Heroku que informa que estamos em production. o Heroku configura esta variável
+if (process.env.NODE_ENV === "production") {
+  // we are in production - return the production set of keys
+  module.exports = require ("./prod");
+} else {
+  // we are in development - return the dev keys
+  module.exports = require("./dev");
+}
diff --git a/config/prod.js b/config/prod.js
new file mode 100644
index 0000000..dda3d60
--- /dev/null
+++ b/config/prod.js
@@ -0,0 +1,31 @@
+// prod.js - production keys here!!
+// dev.js - Development keys - don't commit this!!!
+module.exports = {
+    googleClientID:
+    pg: {
+      host: process.env.PG_HOST, // server name or IP address;
+      hostaddr: process.env.PG_HOST_ADDRESS,
+      port: process.env.PG_PORT,
+      database: process.env.PG_DATABASE,
+      user: process.env.PG_USER,
+      password: process.env.PG_PWD,
+      max: process.env.PG_MAX_NUMBER_OF_CLIENTS, // max number of clients in the pool
+      idleTimeoutMillis: 30000 // how long a client is allowed to remain idle before being closed
+    },
+    msql: {
+      user: process.env.MSQL_USER,
+      password: process.env.MSQL_PWD,
+      server: process.env.MSQL_SERVER,   // "JAVASERVER\\SQLEXPRESS",
+      database: process.env.MSQL_DATABASE,
+      port: process.env.MSQL_PORT,
+      dialect: "mssql"
+    },
+    geoserverWMS: process.env.GEOSERVER_WMS,
+    waterLayers: process.env.WATER_LAYERS,
+    server: process.env.GEOSERVER_WMS,
+    googleClientID: process.env.GOOGLE_CLIENT_ID,
+    googleClientSecret: process.env.GOOGLE_CLIENT_SECRET,
+    mongoURI: process.env.MONGO_URI,
+    cookieKey: process.env.COOKIE_KEY
+  };
+  
\ No newline at end of file
diff --git a/services/databases.js b/services/databases.js
index d6c3d6c..66bb947 100644
--- a/services/databases.js
+++ b/services/databases.js
@@ -9,6 +9,6 @@ pg.defaults.poolSize = 25;
 global.poolPg = new pg.Pool(keys.pg);
 global.poolMsql = new ms_sql.ConnectionPool(keys.msql, function(err) {
   if (err) {
-    console.log("Não conectou \n" + err);
+    console.log("Não conectou com SQLServer:\n" + err);
   }
 });
\ No newline at end of file
--
libgit2 0.21.2