MongoDB Installation
Please get the required binaries from the below link and copy to your server. http://docs.mongodb.org/manual/administration/install-on-linux/ If MongoDB installed successfully, you’ll usually see the below Mongo binaries in the dbpath usually */opt/mongodb/bin* folder which will be useful to start the Mongo…
YCSB workloads evaluation for MongoDB as complete In-Memory
Please find the procedure followed to enable the complete In-memory MongoDB set-up. Step1 :- To mount a RAM partition with 4GB mount -t tmpfs tmpfs /mnt -o size=4096m [root@my-host-name bin]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/rootvg-lv_root…
MongoDB Java driver testing
1. Install latest JDK(jdk-8u5-linux-x64.rpm) 2. Download MongoDB Java driver(mongo-java-driver-2.12.1.jar) 3. Export the variables / run the program in the below given format by keeping jar file in the same folder. 3. Run the java code example code;- [root@myhostname JAVA]$ cat…
MongoDB testing Java Driver with SSL & Kerberos Enabled
[root@myhostname srini]# cat SSLKerb.java import com.mongodb.*; import javax.net.ssl.SSLSocketFactory; import java.net.UnknownHostException; import java.security.Security; import static java.util.Arrays.asList; public class SSLKerb { public static void main(String[] args) throws UnknownHostException, InterruptedException { System.setProperty(“javax.net.ssl.trustStore”,”/usr/java/jdk1.8.0_05/jre/lib/security/cacerts”); System.setProperty(“javax.net.ssl.trustStorePassword”,”changeit”); System.setProperty(“javax.net.ssl.trustStoreType”,”jks”); System.setProperty(“javax.security.auth.useSubjectCredsOnly”, “false”); System.setProperty(“java.security.krb5.realm”, “ASIA.NSTSRIN.NET”); System.setProperty(“java.security.krb5.kdc”, “myhostname.ASIA.NSTSRIN.NET”); String user =…
[MongoDB]: restore vs import
Utility mongorestore allows you to load data into the database. It requires a file (dump) that contains a BSON . Such a file can be created using different tools mongodump . The second utility mongoimport allows you to import data…
mtool for MongoDB Diagnostics
mtools mtools is a collection of helper scripts to parse and filter MongoDB log files (mongod, mongos), visualize log files and quickly set up complex MongoDB test environments on a local machine. Installation procedure :- Step 1:…
MongoDB as pure In-memory
MongoDB as an pure in-memory database, meaning that the data is not stored on disk at all. This can be super useful for applications like: A write-heavy cache in front of a slower RDBMS system Embedded systems PCI compliant systems…
mdiag script for gathering MongoDB’s system & h/w diagnostic info.
mdiag is a shell script which will gather a wide variety of system and hardware diagnostic information of the MongoDB server. Please see below for how it works. mdiag shell script: [Lab root @ hostname /tmp]# cat mdiag.sh #!/bin/sh…
Importing large flat files into mongoDB
This is a very basic technique, but that’s how I like to start. I will also show a couple tricks when working with large data files. Editing large files Let’s assume you have a large data file, approximately 60MB with…
How to drop a field from a MongoDB document ?
For people coming from RDBMS you must be remembering the alter table command for dropping/adding columns in a table. In MongoDB it is possible to do this operation on some of the documents (rows) or all documents together. There is…