The document provides an introduction and agenda for a presentation on Docker. It discusses immutable infrastructure and some of the problems that Docker can solve like deployment issues, environment inconsistency, and quickly scaling applications. It then introduces Docker concepts like images, containers, Dockerfile, and registry. It shows some Docker commands for listing images and running containers.

1. Introduc)on
to

2. Harun Yardımcı
h_yardimci /in/harunyardimci
harun.yardimci@gmail.com
40.990022, 29.107436
hyardimci@ebay.com
https://about.me/harun.yardimci

3. AGENDA
~ 1 HOUR
IMMUTABLE INFRASTRUCTURE
DOCKER
IMAGES AND CONTAINERS
HUB & REGISTRY
BUILD & PULL
ORCHESTRATION
MACHINE
SWARM
COMPOSE
DEPLOYMENTS
MONITORING

4. “I know the solution is Docker, but I am not sure of
the problem.”
Immutable Infrastructure
Deployments
Environment Inconsistency
Developer Onboarding
Resources
Isolation
Security
Fast Shipment
Quickly Scale

5. Immutable
Servers
are
like
Legos:
rebuild
and
replace
instead
of
repairing
them.

6. OS v1
App v1
OS v1
App v1
ac)veac)ve
OS v1
App v2
ac)ve
OS v1
App v1
inac)ve
OS v1
App v2
ac)ve
OS v2
App v2
ac)ve
OS v1
App v2
inac)ve
OS v2
App v2
ac)ve
OS v1
App v1
inac)ve
Patch
Applica)on
Patch
OS
Build
ImmutableMutable
Inac)ve
once
will
be
dropped.

8. &

9. That is Enough!
BUT..

10. Meet the Moby Dock
Yes!
This
whale
has
a
name.
Open
pla(orm
for
building,
shipping
and
running
distributed
applica5ons.
What
is
Docker?
Ship
Faster
and
Easier
Applica5on
Portability
Infrastructure
Flexibility
Scalable
How
it
will
help?

11. VMs are the same!
Virtual
Machine Container
not
^

12. Architecture Overview

13. Client Server Architecture

14. &
+

15. Next couple of slides contains bash
commands and terminal outputs.
There is no need to read them all.
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______|_____|_|
_|_|
(_)

16. Docker Terminology
Image
Container
Dockerfile
Build
Registry

17. Images and Containers
[root@localhost01
~]#
docker
images
REPOSITORY
TAG
IMAGE
ID
CREATED
VIRTUAL
SIZE
my-­‐registry.net:5000/gg-­‐jenkins
1.609.2
45d86b4e7cb2
5
days
ago
1.036
GB
my-­‐registry.net:5000/gg-­‐ac5vemq
5.11.1
ea995e1e0547
11
days
ago
917.8
MB
my-­‐registry.net:5000/gg-­‐ac5vemq
latest
ea995e1e0547
11
days
ago
917.8
MB
harunyardimci/ac5vemq
latest
ea995e1e0547
11
days
ago
917.8
MB
harunyardimci/ac5vemq
5.11.1
ea995e1e0547
11
days
ago
917.8
MB
jenkins
1.625.1
0c79d0a394dc
3
weeks
ago
887.9
MB
[root@localhost01
~]#
docker
ps
CONTAINER
ID
IMAGE
COMMAND
CREATED
STATUS
PORTS
NAMES
List
of
Running
Containers
List
of
Images

18. Run a Container
docker
run
jenkins
run
=
start
[root@localhost01
~]#
docker
ps
CONTAINER
ID
IMAGE
COMMAND
CREATED
STATUS
PORTS
NAMES
327a0bcc9fda
jenkins:latest
“sh
/usr/java/start.sh”
3
days
ago
Up
2
seconds
5000/tcp
berserk_wozniak
}
Name
of
the
image
to
load
into
container
}
will
be
some
parameters
docker
stop
327a0bcc9fda
docker
start
327a0bcc9fda
We
could
use
this
name
here

19. Run a Container
docker
run
-­‐i
-­‐t
-­‐d
-­‐-­‐name
my-­‐jenkins-­‐master
-­‐p
8080:5000
jenkins:1.625.1
run
=
start
[root@localhost01
~]#
docker
ps
CONTAINER
ID
IMAGE
COMMAND
CREATED
STATUS
PORTS
NAMES
327a0bcc9fda
jenkins:1.625.1
“sh
/usr/java/start.sh”
2
days
ago
Up
2
seconds
0.0.0.0:8080-­‐>5000/tcp
my-­‐jenkins-­‐master
docker
stop
my-­‐jenkins-­‐master
docker
start
my-­‐jenkins-­‐master

20. Remove Container & Image
[root@localhost01
~]#
docker
ps
CONTAINER
ID
IMAGE
COMMAND
CREATED
STATUS
PORTS
NAMES
327a0bcc9fda
jenkins:1.6.25.1
“sh
/usr/java/start.sh”
2
days
ago
Up
2
seconds
0.0.0.0:8080-­‐>5000/tcp
my-­‐jenkins-­‐master
[root@localhost01
~]#
docker
images
REPOSITORY
TAG
IMAGE
ID
CREATED
VIRTUAL
SIZE
my-­‐registry.net:5000/gg-­‐jenkins
1.609.2
45d86b4e7cb2
5
days
ago
1.036
GB
my-­‐registry.net:5000/gg-­‐ac5vemq
5.11.1
ea995e1e0547
11
days
ago
917.8
MB
my-­‐registry.net:5000/gg-­‐ac5vemq
latest
ea995e1e0547
11
days
ago
917.8
MB
harunyardimci/ac5vemq
latest
ea995e1e0547
11
days
ago
917.8
MB
harunyardimci/ac5vemq
5.11.1
ea995e1e0547
11
days
ago
917.8
MB
jenkins
1.625.1
0c79d0a394dc
3
weeks
ago
887.9
MB
docker
rmi
jenkins
docker
rmi
0c79d0a394dc
docker
rmi
`docker
images
-­‐q
-­‐f
"dangling=true"`
docker
rm
my-­‐jenkins-­‐master
docker
rm
327a0bcc9fda
docker
rm
`docker
ps
-­‐aq`
docker
rm docker
rmi

21. Where can I find an Image
-­‐
download
exis)ng
-­‐
build
your
own
hkps://hub.docker.com/
• GitHub
or
BitBucket
Integra5on
• Automated
Build
• Web
Hooks
• Public
and
Private
Repos
• Lots
of
official
Images
Docker
Hub

22. Where can I find an Image
Dockerfile
-­‐
download
exis5ng
-­‐
build
your
own
#
comment
INSTRUCTION
arguments
FROM
sets the Base Image for subsequent instruc5ons
RUN will execute any commands in a new layer on top of the current image and commit the results
CMD provide defaults for an execu5ng container
ENTRYPOINT allows you to configure a container that will run as an executable
EXPOSE will listen on the specified network ports at run5me
ENV sets the environment variable <key> to the value <value>
ADD copies new files, directories or remote file URLs and adds them to the filesystem of container
COPY copies new files or directories and adds them to the filesystem of the container
VOLUME creates a mount point with the specified name
USER
sets the user name or UID to use when running the image and for any instruc5ons

23. Dockerfile Example
#
Node.js
Example
#
Image
will
be
based
on
Centos6
FROM
centos:centos6
#
Enable
EPEL
for
Node.js
RUN
rpm
-­‐Uvh
hkp://download.fedoraproject.org/pub/epel/6/i386/
epel-­‐release-­‐6-­‐8.noarch.rpm
#
Install
Node.js
and
npm
RUN
yum
install
-­‐y
npm
#
Bundle
app
source
COPY
.
/src
#
Install
app
dependencies
RUN
cd
/src;
npm
install
#
Map
the
port
8080
EXPOSE
8080
#
Start
the
app
CMD
["node",
"/src/index.js"]
package.json
{
"name":
"docker-­‐centos-­‐hello",
"private":
true,
"version":
"0.0.1",
"descrip)on":
"Node.js
Hello
world
using
docker",
"dependencies":
{
"express":
"3.2.4"
}
}
var
express
=
require('express');
//
Constants
var
PORT
=
8080;
//
App
var
app
=
express();
app.get('/',
func)on
(req,
res)
{
res.send('Hello
worldn');
});
app.listen(PORT);
console.log('Running
on
hnp://localhost:'
+
PORT);
index.js
Dockerfile

24. Build The Image[root@localhost01
~]#
docker
build
-­‐t
gg-­‐node-­‐example
.
Sending
build
context
to
Docker
daemon
200.2
kB
Sending
build
context
to
Docker
daemon
Step
0
:
FROM
centos:centos6
Pulling
repository
centos
a005304e4e74:
Download
complete
….
spin
….
Status:
Downloaded
newer
image
for
centos:centos6
-­‐-­‐-­‐>
a005304e4e74
Step
1
:
RUN
rpm
-­‐Uvh
hkp://download.fedoraproject.org/pub/epel/6/i386/epel-­‐release-­‐6-­‐8.noarch.rpm
-­‐-­‐-­‐>
Running
in
bf9df3009d99
Retrieving
hkp://download.fedoraproject.org/pub/epel/6/i386/epel-­‐release-­‐6-­‐8.noarch.rpm
-­‐-­‐-­‐>
e3cef724d749
Removing
intermediate
container
bf9df3009d99
Step
2
:
RUN
yum
install
-­‐y
npm
-­‐-­‐-­‐>
Running
in
53833526eb72
Setng
up
Install
Process
Resolving
Dependencies
Complete!
-­‐-­‐-­‐>
c2f62ff5335d
Removing
intermediate
container
53833526eb72
Step
3
:
COPY
.
/src
-­‐-­‐-­‐>
865de2a7ad61
Removing
intermediate
container
e837a9c1038d
Step
4
:
RUN
cd
/src;
npm
install
-­‐-­‐-­‐>
Running
in
7898163aaa6b
….
spin
….
Step
5
:
EXPOSE
8080
-­‐-­‐-­‐>
Running
in
86560a6429a6
-­‐-­‐-­‐>
82d48b2e1d36
Removing
intermediate
container
86560a6429a6
Step
6
:
CMD
node
/src/index.js
-­‐-­‐-­‐>
Running
in
67e03c4ee83e
-­‐-­‐-­‐>
41c16d218d70
Removing
intermediate
container
67e03c4ee83e
Successfully
built
41c16d218d70

25. Build The Image
[root@localhost01
~]#
docker
images
REPOSITORY
TAG
IMAGE
ID
CREATED
VIRTUAL
SIZE
centos
centos6
539c0211cd76
5
seconds
ago
203.1
MB
gg-­‐node-­‐example
latest
d64d3505b0d2
2
hours
ago
539.3
MB
Second
Time
[root@localhost01
~]#
docker
build
-­‐t
gg-­‐node-­‐example
.
Sending
build
context
to
Docker
daemon
202.2
kB
Sending
build
context
to
Docker
daemon
Step
0
:
FROM
centos:centos6
-­‐-­‐-­‐>
a005304e4e74
Step
1
:
RUN
rpm
-­‐Uvh
hkp://download.fedoraproject.org/pub/epel/6/i386/epel-­‐release-­‐6-­‐8.noarch.rpm
-­‐-­‐-­‐>
Using
cache
-­‐-­‐-­‐>
e3cef724d749
Step
2
:
RUN
yum
install
-­‐y
npm
-­‐-­‐-­‐>
Using
cache
-­‐-­‐-­‐>
c2f62ff5335d
Step
3
:
COPY
.
/src
-­‐-­‐-­‐>
31caf3a92acb
Removing
intermediate
container
db10d432aa91
Step
4
:
RUN
cd
/src;
npm
install
-­‐-­‐-­‐>
Running
in
9d4wd824d6b
Step
5
:
EXPOSE
8080
-­‐-­‐-­‐>
Running
in
86560a6429a6
-­‐-­‐-­‐>
82d48b2e1d36
Removing
intermediate
container
86560a6429a6
Step
6
:
CMD
node
/src/index.js
-­‐-­‐-­‐>
Running
in
67e03c4ee83e
-­‐-­‐-­‐>
41c16d218d70
Removing
intermediate
container
67e03c4ee83e
Successfully
built
41c16d218d70

26. Hub and Registry
[root@localhost01
~]#
docker
push
harunyardimci/ac)vemq
The
push
refers
to
a
repository
[harunyardimci/ac5vemq]
(len:
1)
ea995e1e0547:
Image
push
failed
Please
login
prior
to
push:
Username:
harunyardimci
Password:
Email:
email@myemail.com
WARNING:
login
creden5als
saved
in
/root/.docker/config.json
Login
Succeeded
The
push
refers
to
a
repository
[harunyardimci/ac5vemq]
(len:
1)
ea995e1e0547:
Image
already
exists
a01e3f658b16:
Image
already
exists
8209bd534a23:
Image
successfully
pushed
61abcd2c1997:
Image
successfully
pushed
47271e138907:
Image
already
exists
9d39128059aa:
Image
successfully
pushed
ad6b675a1518:
Image
already
exists
49d630d58a4b:
Image
successfully
pushed
b4cb24b0365b:
Image
already
exists
49ebfec495e1:
Image
successfully
pushed
bw63b0f4db1:
Image
successfully
pushed
2262501f7b5a:
Image
already
exists
a594f78c2a03:
Image
successfully
pushed
682b997ad926:
Image
successfully
pushed
607e965985c1:
Image
successfully
pushed
1ff9f26f09w:
Image
successfully
pushed
9a61b6b1315e:
Image
already
exists
902b87aaaec9:
Image
successfully
pushed
Digest:
sha256:349339cbb0d44af01b2822efede02df3f377f6fce774489dba2266847a193416

27. Private Registryour
own
Commit
and
Push
Changes
as
Normal
Build
the
Code
and
Create
Docker
Image
with
a
New
Tag
(Version)
Pull
Changes Push
Image
Store
Docker
Images

28. Private Registryour
own

29. Pull an Image
[root@localhost01
~]#
docker
pull
my-­‐registry.net:5000/ac)vemq
[root@localhost01
~]#
docker
pull
harunyardimci/ac)vemq
Pull
From
Docker
Hub
Pull
From
Private
Registry
Use
your
username
in
docker
hub
Use
private
registry
hostname
and
port
(and
username
if
authen5ca5on
enabled)

30. Pull an Image
[root@localhost01
~]#
docker
pull
ubuntu
Pulling
repository
ubuntu
b7de3133ff98:
Pulling
dependent
layers
5cc9e91966f7:
Pulling
fs
layer
511136ea3c5a:
Download
complete
ef52w1fe610:
Download
complete
f5f2fe7ac31e:
Download
complete
be55w7f26a5:
Download
complete
3f42f9df3610:
Download
complete
.
.
.
Status:
Downloaded
newer
image
for
ubuntu

31. Other Commands
commit
cp
create
exec
export
import
info
inspect
logs
port
push
stats
tag
top

32. Orchestration

33. Docker Machine
beta
allows
you
to
provision
Docker
on
virtual
machines
that
reside
either
on
your
local
system
or
on
a
cloud
provider
$
docker-­‐machine
create
-­‐d
virtualbox
dev
$
docker-­‐machine
create
-­‐d
digitalocean
-­‐-­‐digitalocean-­‐
access-­‐token=secret
AWS,
Digital
Ocean,
Google
Cloud
Pla(orm,
IBM
So|layer,
Microso|
Azure
and
Hyper-­‐V,
OpenStack,
Rackspace,
VirtualBox,
VMware
Fusion®,
vCloud®
Air™
and
vSphere®

34. Docker Machine
beta
$
docker-­‐machine
ls
NAME
ACTIVE
DRIVER
STATE
URL
SWARM
default
virtualbox
Stopped
dev-­‐env
virtualbox
Running
tcp://192.168.99.100:2376
dev2
digitalocean
Stopped
$
docker-­‐machine
start
dev-­‐env
Star5ng
VM...
Started
machines
may
have
new
IP
addresses.
You
may
need
to
re-­‐run
the
`docker-­‐machine
env`
command.
$
docker-­‐machine
env
dev-­‐env
export
DOCKER_TLS_VERIFY="1"
export
DOCKER_HOST="tcp://192.168.99.100:2376"
export
DOCKER_CERT_PATH="/Users/hyardimci/.docker/machine/machines/dev"
export
DOCKER_MACHINE_NAME=“dev-­‐env"
#
Run
this
command
to
configure
your
shell:
#
eval
"$(docker-­‐machine
env
dev-­‐env)”
or
you
can
use
Docker
Quick
Start
Terminal

35. Docker Machine
beta
or
you
can
use
Docker
Quick
Start
Terminal

36. Docker Swarm
beta
allows
you
create
and
access
to
a
pool
of
Docker
hosts
using
the
full
suite
of
Docker
tools
$
docker
run
swarm
create
$
docker
run
-­‐d
swarm
join
-­‐-­‐addr=<node_ip:2375>
token://
cluster_id>
docker
run
-­‐d
-­‐p
<swarm_port>:2375
swarm
manage
token://<cluster_id>

37. Docker Compose
beta
is
a
tool
for
defining
and
running
mul5-­‐
container
applica5ons
with
Docker.
WORKDIR
/code
ADD
requirements.txt
/code/
RUN
pip
install
-­‐r
requirements.txt
ADD
.
/code
CMD
python
app.py
web:
build:
.
links:
-­‐
db
ports:
-­‐
"8000:8000"
db:
image:
postgres
$
docker-­‐compose
up
Dockerfile compose.yml

38. • Docker
Client
• Docker
Machine
• Docker
Compose
(Mac
only)
• Docker
Kitema5c
• VirtualBox
Docker Toolbox

39. There
are
lots
of
more
tools..
CentOS
Atomic
Consul
Terraform
Serf
Cloudify
Helios
too
many
of
them
are
available..

40. Ease Deployments w/ Docker
Canary Releasing Blue-Green Deployment
S1 S1 S1 S1
R R
S1 S1 S1 S1
S2 S2 S2 S2
Deploy the new version to limited
number of servers
Deploy the new version to all of the
servers (or provision new servers)
If everything is OK, then switch from
router to new servers
If is work fine, deploy to the rest of
the servers
Docker can easily help to achieve some deployment paJerns such as
canary
releasing and blue-­‐green
deployment

41. Ease Deployments w/ Docker
Canary Releasing Blue-Green Deployment
S1 S2 S2 S2
R R
S1 S1 S1 S1
S2 S2 S2 S2
Deploy the new version to limited
number of servers
Deploy the new version to all of the
servers (or provision new servers)
If everything is OK, then switch from
router to new servers
If is work fine, deploy to the rest of
the servers
Docker can easily help to achieve some deployment paJerns such as
canary
releasing and blue-­‐green
deployment

42. MonitoringHow
we
are
doing
it

43. MonitoringHow
we
are
doing
it
Any
Container cAdvisor
Container
to
collect
metrics
InfluxDB
container
as
a
cAdvisor
Backend
Storage
Driver
Monitoring
tool
uses
InfluxDB
as
a
data
source

44. Reminder
IMMUTABLE INFRASTRUCTURE
FABRIC AND PUPPET
DOCKER
IMAGES AND CONTAINERS
RUNNING A CONTAINER
REMOVE A CONTAINER OR A IMAGE
HUB & REGISTRY
BUILDING AN IMAGE
DOCKERFILE
PRIVATE REGISTRY
PULLING AN IMAGE
OTHER COMMANDS
ORCHESTRATION
MACHINE
SWARM
COMPOSE
DOCKER TOOLBOX
MESOS + KUBERNETES
DEPLOYMENTS
MONITORING

45. Thanks..
Questions?