run docker in docker

Run docker in docker

1
docker run --privileged -i -t -d --restart=unless-stopped -p 2376:2376 -p 10000-11000:10000-11000 -p 10000-11000:10000-11000/udp -v /mnt/opt:/opt:rw -v /etc/docker:/etc/docker:ro -v /mnt/var/lib/docker:/var/lib/docker --name=docker docker:dind  -H tcp://0.0.0.0:2376 --storage-driver=aufs --tlsverify --tlscacert /etc/docker/ca.pem --tlscert /etc/docker/server.pem --tlskey /etc/docker/server-key.pem

Customised select styles

e.g.

1
2
3
4
5
6
7
8
9
10
11
12
13
.select-type-1{
-webkit-appearance: none;
-moz-appearance: none;
appearance: none;
padding:1em;
border:1px solid #ee7122;
color:white;
text-align: center;
border-radius: 0px;
-webkit-border-radius: 0px;
background: rgba(255, 255, 255, 0.12) url("../img/arrowdown.png") no-repeat 90% 50%;
background-size:10%;
}

self-explained.

Docker multi-hosting network quick note

To create an overlay network on multiple hosts over swarm, following are required:

  • a key-value store service: this is used for broadcasting hosts / swarm agents. It can be same kv store swarm used for discovery
  • Run docker daemon with following parameters:
    • cluster-store: where the store is
    • cluster-advertise: what network interface to be advertised

get client ip address in express.js

According to this, do following to determine the client ipaddress:

1
2
3
4
var ip = (req.headers['x-forwarded-for'] ||
req.connection.remoteAddress ||
req.socket.remoteAddress ||
req.connection.socket.remoteAddress).split(",")[0];

Quick Note for Unit Tests in Angularjs

Testing with web app is always fun. Angularjs makes it even better.
This quick note bootstrap any angular.js projects embracing with unit tests.

Tools

Unit testing in Angularjs is using (by default) Jasmine and Karma.

Also, angular-mocks needs to be installed. It is needed for injection and some other mock objects.

1
bower install --save angular-mocks

Using setter in Mongoose

According to mongoose.js doc, it is able to set setters to a field on schema.
However, the doc is not quite detailed and obselete.
Some example:

1
2
3
4
5
6
7
8
9
10
11
var schema=new Schema({
password:{
type:String,
required:true,
set:hash
}
})

function hash(plainPwd){
return require("crypto").createHash("sha1").update(plainPwd).update(secret).digest("hex");
}