fix deploy:migrate on stopped server

Author: iliakan

modules/deploy/tasks/migrate.js

@@ -27,8 +27,17 @@ module.exports = function() {
 
       gutil.log("Migrations found, stopping to apply, in maintenance mode");
       fs.writeFileSync(path.join(projectRoot, '.maintenance'), '');
-      execSync('/usr/local/bin/pm2 stop all'); // todo gracefulShutdown
 
+      try {
+        execSync('/usr/local/bin/pm2 stop all'); // todo gracefulShutdown
+      } catch(e) {
+        if (e.code == 1) {
+          // OK
+          // [PM2][WARN] No process found (already stopped)
+        } else {
+          throw e;
+        }
+      }
       gutil.log("Migrations, applying all up");
 
       yield migrationManager.migrateAllUp();

modules/deploy/tasks/update.js

@@ -31,7 +31,7 @@ module.exports = function() {
         yield* client.runInTarget(`git merge origin/production --no-edit`);
 
         // if there any migrations, this will stop the server and apply them
-        yield* client.runInTarget(`gulp deploy:migrate`);
+        yield* client.runInTarget(`gulp deploy:migrate --stop`);
 
         yield* client.runInTarget(`/usr/local/bin/pm2 startOrGracefulReload ecosystem.json --env production`);
         yield* client.runInTarget(`gulp cache:clean`);