Using Docker for your deployments
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Who I am
- Alvaro Aguirre
- ALMA Project
- @alvaro_aguirre
ALMA Observatory
Atacama Large Millimeter/submillimeter Array
66 antennas
Introduction
Introduction
Introduction
Introduction
online (core)
offline (surface)
Applications
100 ~
In-house applications
30 ~
Current Situation (offline)
Evolution
Evolution
Database
Service
Proxy
Evolution
Clusters
Virtual Machines
Docker
an open platform for developers and sysadmins to build, ship, and run distributed applications
Docker Architecture
FROM rhel6.6:latest
MAINTAINER Alvaro Aguirre <aaguirre@alma.cl>
ENV EPEL_VERSION 6-8
ENV JAVA_VERSION 8u45
ENV BUILD_VERSION b14
ENV TOMCAT_VERSION 7.0.62-4
ENV RHN_USER almasoftware
ENV RHN_PASS XXXXXX
WORKDIR /root
RUN /usr/sbin/subscription-manager register --username=$RHN_USER --password=$RHN_PASS --serverurl=subscription.rhn.redhat.com --autosubscribe
RUN yum -y update && \
yum install -y \
vim-enhanced \
blas \
blas-devel \
tetex-latex \
gcc-c++ \
python-devel \
python-lxml \
wget \
openssl \
openssl-devel \
zlib-dev
RUN yum -y install openssh-server && \
rm -f /etc/ssh/ssh_host_dsa_key /etc/ssh/ssh_host_rsa_key && \
ssh-keygen -q -N "" -t dsa -f /etc/ssh/ssh_host_dsa_key && \
ssh-keygen -q -N "" -t rsa -f /etc/ssh/ssh_host_rsa_key && \
sed -i "s/#UsePrivilegeSeparation.*/UsePrivilegeSeparation no/g" /etc/ssh/sshd_config && \
sed -i "s/UsePAM.*/UsePAM no/g" /etc/ssh/sshd_config
ENV AUTHORIZED_KEYS **None**
RUN echo root:'$1$rrii2oPl$sIWEJP2utD9ks3Kn8r.Lu/' | chpasswd --encrypted
RUN wget http://download.fedoraproject.org/pub/epel/6/i386/epel-release-$EPEL_VERSION.noarch.rpm && \
rpm -ivh epel-release-$EPEL_VERSION.noarch.rpm
RUN yum -y install pyephem \
python-pip && \
easy_install -U distribute && \
pip install numpy==1.7.0
RUN yum -y install freetype-devel \
libpng-devel && \
pip install matplotlib
RUN pip install supervisor
RUN wget --no-cookies --no-check-certificate --header "Cookie: oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/$JAVA_VERSION-$BUILD_VERSION/jdk-$JAVA_VERSION-linux-x64.rpm" -O /tmp/jdk-8-linux-x64.rpm
RUN yum -y install /tmp/jdk-8-linux-x64.rpm
COPY apache-tomcat-$TOMCAT_VERSION.el6.x86_64.rpm /root/
RUN yum -y --nogpgcheck localinstall apache-tomcat-$TOMCAT_VERSION.el6.x86_64.rpm
COPY supervisord.conf /etc/supervisord.conf
EXPOSE 8080 22
CMD ["/usr/bin/supervisord"]
Dockerfile
Current Setup
VCenter
Blade
VM
VM
VM
VM
VM
VM
DNS
10.200.117.XX -> hostname
Docker Setup
Host
Container
Multiple IP interfaces
10.200.117.XX -> hostname
Docker
Container
Docker
Container
Docker
Container
Docker
Container
Docker
Docker
Postgres Database
Elastic Search
Redis Server
App
Nginx
REDHAT 6.6
SSH Server
Java + Tomcat
Supervisor
Docker Layers
8080
22
Management
- Docker CLI
- Docker API
- Ansible
- others
Docker CLI
docker build
docker pull
docker run
Docker CLI
docker ps (list active containers)
docker ps -a (list all containers)
docker images (list all images)
docker rm <container>
docker rmi <image>
docker run -d --name cas_2015.4 offline:latest
docker run -d --name cas_2015.4
-v /etc/offline/:/etc/offline/
-v /etc/offline/webapps/cas/:/var/lib/tomcat/webapps/
-p=10.200.67.22:22:22
-p=10.200.67.22:8080:8080
--dns=10.200.16.22
--hostname=hybris.sco.alma.cl
offline:latest
docker run -d --name submission_2015.4
-v /etc/offline/:/etc/offline/
-v /etc/offline/webapps/submission/:/var/lib/tomcat/webapps/
-v /etc/offline/data/submission/mail.jar:/usr/share/tomcat/lib/mail.jar
-v /etc/offline/data/submission/ojdbc6.jar:/usr/share/tomcat/lib/ojdbc6.jar
-v /etc/offline/data/submission/xdb.jar:/usr/share/tomcat/lib/xdb.jar
-v /etc/offline/data/submission/xmlparserv2.jar:/usr/share/tomcat/lib/xmlparserv2.jar
-v /etc/offline/data/submission/server.xml:/etc/tomcat/server.xml
-v /etc/offline/data/submission/InvestigatorDbWS.xml:/etc/tomcat/Catalina/localhost/InvestigatorDbWS.xml
-v /etc/offline/data/submission/ObsprepSubmissionService.xml:/etc/tomcat/Catalina/localhost/ObsprepSubmissionService.xml
-p=10.200.67.34:22:22
-p=10.200.67.34:8180:8180
--dns=10.200.16.22
--hostname=eichsfeldia.sco.alma.cl
offline:latest
docker run -d --name scheduling_2015.4
-v /etc/offline/:/etc/offline/
-v /etc/offline/webapps/scheduling/:/var/lib/tomcat/webapps/
-p=10.200.67.33:22:22 -p=10.200.67.33:8080:8080
--dns=10.200.16.22
--hostname=bathilde.sco.alma.cl
-e "APRC_WORK_DIR=/eqtc/offline/config/scheduling/work_dir"
offline:latest
Docker API
(docker py)
- Create/Build
- Run
- Read Logs
- Monitor
Ansible
Ansible is the simplest way to automate apps and IT infrastructure. Application Deployment + Configuration Management + Continuous Delivery.
Ansible
Ansible Client
Host 1
Host 2
Host 3
Host 4
Host 5
Ansible
Ansible Client
Container
Docker
Container
Docker
Container
Docker
Container
Docker
Container
Docker
.
├── group_vars
│ └── all
├── hosts
├── play.yml
└── roles
└── cas
├── files
├── handlers
│ └── main.yml
├── meta
│ └── main.yml
├── tasks
│ └── main.yml
├── templates
└── vars
└── main.yml
Ansible Project
- name: create new virtual ip in the docker host
command: ip addr add {{cas_ip}}/24 dev eth0
ignore_errors: yes
- name: run cas application image
docker:
name: "cas_{{ release }}"
state: started
image: "offline:latest"
volumes:
- /etc/offline/:/etc/offline/
- /etc/offline/webapps/cas/:/var/lib/tomcat/webapps/
ports:
- "{{ cas_ip }}:22:22"
- "{{ cas_ip }}:8080:8080"
dns:
- "10.200.16.22"
hostname: "{{ cas_hostname }}"
Ansible Project
ansible-playbook -i hosts play.yml
Gracias!
DevConChile
By aaguirre
DevConChile
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