docker -v
The program 'docker' is currently not installed. You can install it by typing:
sudo apt install docker.io
(my_env) ubuntu@ip-192-31-19-128:/tmp$ sudo apt install docker.io
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
bridge-utils cgroupfs-mount containerd...
Monday, 7 August 2017
August 07, 2017
The program 'docker' is currently not installed.
August 07, 2017
conda install traitlets tornado jinja2 sqlalchemy
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conda: command not foun...
August 07, 2017
Permission error- Unable to ssh into Amazon EC2 instance
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ssh -i ec2-instance-cert.pem root@publicip or public dns
@@@@@@@@@@@@@@@@@@@@@@@@######@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ ### WARNING: UNPROTECTED PRIVATE KEY FILE! ### @
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Permissions 0644 for 'test.pem' are...
Sunday, 6 August 2017
August 06, 2017
Mongoose
It is an object modeling tool for nodejs that connects MongoDB.Mongoose take the models and maps them to MongoDB database.
install required dependencies
npm install mongoose
var mongoose = require('mongoose');
/*without callback */
mongoose.connect('localhost','mydatabase');
/* with callback */ create a connection object and bind two callabcks.
var db = mongoose.connection;
db.on('open',function...
August 06, 2017
Elastic Load Balancing
Elastic Load Balancing automatically distributes the incoming application traffic across multiple was ec2 instances.
Two types of load balancers :
Application Load Balancer
Classic Load Balancer
Elastic Load Balancing :
It is in-region load balancing service and distributed traffic across multiple...
Saturday, 5 August 2017
August 05, 2017
Creating Database MongoDB
MongoDB is document based database.
Creating Database NodeJS - MongoDB
Once mongoDB is up and running,
var mongoDB = require('mongodb');
var mydbserver = new mongodb.server('localhost', 27017, {auto_reconnect:true});
/* new mongodb.Db() creates a new database */
/* w:1 sets the write concern */
var database = new mongodb.Db('eCommerceDb',mydbserver, {w:1});
Collections...
Tuesday, 1 August 2017
August 01, 2017
Installing MongoDB
Mac Installation :
The easy way to install MongoDB is by using package manager like Homebrew or MacPorts.
$ sudo brew install mongodb
or
$ sudo port install mongodb
Setup the data directory
$ sudo mkdir -p /data/db
setup appropriate permissions
$ sudo chown 'id -u' /data/db
Ubuntu Installation :
To authenticate apt-get package,...
