Author: admin

Use ssh keys to encrypt and decrypt messages

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Encryption with RSA Key Pairs During the Thanksgiving holiday I wondered, “how hard would it be to encrypt and decrypt files with my SSH key?” Encryption is the purpose of public/private RSA key pairs, after all. With `openssl`, it’s not too hard. (Note: If you’re on OSX, you should install the latest versions of OpenSSL…

Gather metatdata on AWS from within EC2 instance.

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So I need to get information about a particular set of machines in the cloud (AWS). EC2_INSTANCE_ID="`wget -q -O – http://instance-data/latest/meta-data/instance-id || die \"wget instance-id has failed: $?\"`" test -n "$EC2_INSTANCE_ID" || die 'cannot obtain instance-id' EC2_AVAIL_ZONE="`wget -q -O – http://instance-data/latest/meta-data/placement/availability-zone || die \"wget availability-zone has failed: $?\"`" test -n "$EC2_AVAIL_ZONE" || die 'cannot obtain…

Unexpected Fail over warning on Couchbase servers

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This is the “expected” behavior. Let me explain it, with a cluster of 3 nodes and 1 replica. So you have started with 1 node, so in this case you have only “active documents” (no replica) Then you add another node, and do a rebalance. Once it is done you have 50% of the active…

Installing node on Fedora 22

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yum install gcc-c++ make openssl-devel   Install from Source code : wget http://nodejs.org/dist/v0.8.15/node-v0.8.15.tar.gz tar zxvf node-v0.8.15.tar.gz cd node-v0.8.15 ./configure make make install Install from GIT repository yum install git git clone git://github.com/joyent/node.git cd node ./configure make make install   nJoy 😉  

package.json sample

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This is the basic structure for a node.js package file { "name": "Express-Basic", "description": "Demonstrating Express", "version": "0.0.1", "private": true, "dependencies": { "express": "3.x" } } nJoy 😉