nodejs connect to mongodb

Turn from: http://hi.baidu.com/zwfec/item/3cfecfabafda3a258819d38b Today, look at the server, found that Mongod start not up, prompted Sun June 2 12:27:02 error:couldn ' t connect to server 127.0.0.1:27017 src/mongo/shell/mongo.js:91 Error Look up the solution on the Internet, most people say set up dbpath, this is to solve the problem, but not to find the root cause of the problem, The root of the problem is that the machine illegal shutdown caus

One, MONGO connection configuration fileTwo, library configurationMongo.config.replica.set.address=192.168.1.xxx:27017,192.168.1.113.xxx:27018,192.168.1.xxx : 27019mongo.config.replica.set.name=replmongo.config.database=testmongo.config.username=mongo.config.password= mongodb.connection=Spring-data-mongo-1.8.2.release Connect MongoDB Replica set memo

Tags: io ar using SP file data on problem CTINote: This solution to this problem is premised on the previous open MongoDB, once again use the time can not connect (using Mongod and MONGO are not correct)Gossip: It's annoying to have this kind of problem, so say Sun's beach, okay ~ coolBusiness:The errors you may encounter are as follows:MongoDB Shell version:2.4.9Connecting To:testMon Mar 3 23:45:09.491 err

When you encounter this problem, you can resolve it by following these steps:1. Open the MONGO installation package: Enter the DB folder under the Data folder under MONGO, locate Mongod.lock, delete. 2. On the command line, enter: Mongod.exe--dbpath c:\Mongo\data\db If an error occurs: dbexit:rc:100, see a blog workaround. 3. Open a new command line window, enter Mongo/bin, enter the MONGO, at this time MongoDB will be able to run normally, the two co

Label:Recent projects in the use of MongoDB, used to be very useful, but the user on the volume, obviously feel a little slow, why so slow, I began to slowly look for reasons. Combined with online test scripts and some of my friends ' test results and the results of my own tests, I found that MongoDB is really not that slow, and that's where I wrote it wrong? I started to find out where in the project code

be resolved as such. It's pretty detailed.http://lingqi1818.iteye.com/blog/1317433However, if these items are not linked, it means that some of the ports on the server are not open causing the connection to be non-connected.Workaround first Configure the IP table to open some ports, and then restart server.Root enters serverVi/etc/sysconfig/iptablesAdd to-A input-m state--state new-m tcp-p TCP--dport 10002-j ACCEPT (the port opened here is 10002)Save exitService Iptables RestartTry the code aga

reasons can be solved. It's pretty specific.http://lingqi1818.iteye.com/blog/1317433But assuming that these things are not linked, it means that some ports on the server are not open and cannot be connected.Workaround to first configure the IP table to open some ports, and then restart server.Root enters serverVi/etc/sysconfig/iptablesJoin-A input-m state--state new-m tcp-p TCP--dport 10002-j ACCEPT (the port opened here is 10002)Save exitService Iptables RestartTry the code again, get it done!

Github: https://github.com/ZhangzheBJUT/blog/blob/master/mgo.mdMongoDB has not yet released the official support for golang driver, it is recommended to use the detailed documentation of mgo. mgo: http://godoc.org/labix.org/v2/mgoThe following is a self-developed instance used to connect to the MongoDB Database Using mgo. Package mainimport ("fmt" "labix.org/v2/mgo" "labix.org/v2/mgo/bson") type Person stru

From Pymongo import mongoclientFrom Bson.objectid import ObjectidImport JSONdef read (data, find):# set to read the file in Utf-8 decoding mode, encoding parameter must be set, otherwise the default in GBK mode to read the file, when the file contains Chinese, will errorf = open (data, encoding= ' Utf-8 ')setting = Json.load (f)# Note The read syntax for multiple structures# family = setting[' basesettings ' [' Font ']style = Setting[find]# Print (family)return styleDef mongoclient ():Client = m

": 2, " name ":" 192.168.33.112:27017 ", " Health ": 1, " state ": 2, " STATESTR ":" Secondary ", " uptime ": 129, " Optime ": Timestamp (1440445283, 1), "Optimedate": Isodate ("2015-08-24t19:41:23z"), "ConfigVersion": 1, "self": True } ], "OK": 1 }Here we can see the RS cluster details, you can see 119 that machine was selected as primary node, 112 was selected as secondary node, and later if you want to add a machine to do scale-out, only need to add to the clus

relevant POM on the Spring boot website.Create a new spring boot project, enter the Spring boot component auto-configuration URL, and click Next.Enter information about the purpose of the MAVEN entry and select the JDK version.Select the service component you want.The Created Spring Boot project is an empty MAVEN project with the required jar packages in the POM. Spring Boot Connection MongoDB Spring data provides support for operating multiple datab

Copy Code code as follows: Connect localhost:27017 $conn = new Mongo (); Connecting to the remote host default port$conn = new Mongo (' test.com '); Connecting to remote host port 22011$conn = new Mongo (' test.com:22011 '); MongoDB has user name password$conn = new Mongo ("Mongodb://${username}:${password} @localhost")

mongodb resolves an error that cannot connect to the server MongoDB has the following error: couldn ' t connect to server 127.0.0.1 workaround is: First look at the service start No, if not start the service first start the service, if the service has been started, it hasIt is possible that the last time the MONGO was

Recently installed the mongodb3.0, and enabled the authorization authentication, the DOS window operation without any problems, as shown in figure: In order to maintain the convenience of downloading a client tool Robomongo 0.8.4, user name, password, such as configuration better solution test, As a result, the connection service does not have a problem, and permission validation does not pass, as shown: View the log, found a sentence: Failed to authenticate admin@admin with mechanism

Tags: direct sof str URI and user RTM avoid RTO1. Connect① Way OneMongoclientoptions.builder Builder = Mongoclientoptions.builder ();//various detailed configurations can be made through builderMongoclientoptions myoptions =Builder.build (); ArrayListNewArrayList (); ServerAddress Record=NewServerAddress ("localhost", 27017);//IP, PortServeraddresslist.add (record); //user name, default library name, passwordMongocredential credential = mongocredentia

One, replica set configurationSet up, 1 main instances, 1 units from the instance, 1 arbitration instances. MongoDB recommends an odd number of machines in a replica setSecond, C # connection string1. ReadMongodb://secondary.com/?slaveok=true2. WriteMongodb://primary.comThird, experience1. Using a 1.7 C # driver, do not support configuring/?readpreference=secondary or/?readpreference=secondarypreferred directly in the connection string2.readPreference

Background information: Because the Linux server used for development is in a relatively closed environment, only 22 ports are accessed via SSH. So I used putty to do an SSH forwarding to map the 27018 port of this machine to the remote 27017 port. Successfully connected via MONGO localhost:27018 in CMD and operated. Phenomenon: In the program through the Mongo Mongo = new Mongo ("localhost", 27018);MongoDB on a remote server, the following error occ

Label:First, let's take a look at the map to see if the parents have the same connection problem. I have met two times and felt it necessary to record it. Ready for future viewing. Analysis reason: This is the start of the Shell editor when the problem occurs, I analyze he may be a server connection problem. Workaround: In the MONGO installation file, create a mongo.config file that reads as follows: If you start MONGO every time, it will be a very troublesome thing to start from CMD. It is co

That's the mistake!I searched the Internet. The solution is almost all about the issue of authentication mechanisms:>Use Admin switched to DB admin>Db.system.version.find () {"_id":"featurecompatibilityversion","version":"3.4" } { "_id":"Authschema","CurrentVersion":5}Then delete the user after the "CurrentVersion": Change to 3 and finally add the user.But I tried it many times and I didn't use!!!!!!!!!!!!!!!!!!!!.If you use the above solution, it may be a mechanism problem. If not, you should n

In the form of batch file, first solve this problem really is not I am good at, thanks to warm uncle help me. Because I found out that the DOS code is quite different from the batch file. Here is my solution to this problem when the harvest, of course, without the help of small warm. Here are some of the absolute and relative paths written in the batch fileFirst I try the following method, which is written in the batch file below and then the DOS environment to assign the 1% parameterHowever, th