Dockerizing Oracle Database

Gerald Venzl
Senior Principal Product Manager
Oracle Database Development
Twitter: @GeraldVenzl

Copyright © 2017, Oracle and/or its affiliates. All rights reserved. |
Program Agenda
What is Docker
Installing Docker
Building an Oracle Database Docker image
Running an Oracle Database inside Docker
Tips and Tricks
1
2
3
4
5

What is Docker?
• A software container platform
• Originated from Linux / Linux Containers
– Also available on Windows and Mac OS X
• Part of the Linux Open Container Initiative (OCI)
– Part of Open Source Linux
• Editions:
– Commercial Edition (EE) – Sold by Docker Corp
– Community Edition (CE) – Part of Open Source Linux

What is Docker?
• docker-engine: The engine running containers
• Images: Collection of software to be run as a container
• Containers: A container on the Linux host
• Registry: Place to store and download images
• Volumes: Place to persist data outside the container
Terminology

Docker Key Components
Source: https://docs.docker.com/engine/docker-overview/
• Registry
• Images
• Containers
• Docker
daemon/engine

Docker Key Components - Volumes
Source: https://docs.docker.com/engine/docker-overview/
• Registry
• Images
• Containers
• Docker
daemon/engine

What is Docker?
• Containers are non-persistent
– Once a container is deleted, all files inside that container are gone
Concepts

What is Docker?
• Images are immutable
– Changes to an image require to build a new image
– Data to be persisted has to be stored in volumes
Concepts

What is Docker?
• Images are immutable
– Changes to an image require to build a new image
– Data to be persisted has to be stored in volumes
• Containers are spun up from images
Concepts

Why is Docker cool?
• Abstracts virtual environment (container) creation
into simple steps:
– docker create …
– docker run …
– docker rm …
• Runs directly on the Linux kernel (cgroups)
– Avoids the hypervisor overhead

Why is Docker actually cool?

• Allows abstraction of environments into images

• Allows creation of hierarchical images

• Allows creation of hierarchical images
• Supports multi-layered image registries

Oracle CDB architecture & Docker architecture
Same concept applied on DB and OS level
App B App CApp A
App A App B App C

Oracle Database on Docker
• Oracle Database is fully supported on Docker
– Oracle Linux 7 - UEK 4
– Red Hat Enterprise Linux 7
• Oracle images on Oracle Container Registry & Docker Store
• Docker build files on GitHub
• RAC is not yet supported

Oracle Database on Docker
• Docker container contains single-PDB CDB (no MTO license required)
• PDB can be plugged, unplugged, etc.
• PDB can move bi-directional

Installing Docker
1) Enable OL7 addons repo
2) Install docker-engine
3) Enable non-root user (optional)
4) Increase base image size (optional)
5) Start and enable Docker service

Enable OL7 addons repo
[root@localhost ~]# yum-config-manager --enable *addons
Loaded plugins: langpacks
============ repo: ol7_addons ============
[ol7_addons]
async = True
bandwidth = 0
base_persistdir = /var/lib/yum/repos/x86_64/7Server
baseurl = http://public-yum.oracle.com/repo/OracleLinux/OL7/addons/x86_64/
...
...
...

Enable OL7 addons repo - check
[root@localhost ~]# yum repolist
Loaded plugins: langpacks, ulninfo
repo id repo name status
ol7_UEKR4/x86_64 Latest Unbreakable Enterprise 544
ol7_addons/x86_64 Oracle Linux 7Server Add ons (x86_64) 251
ol7_latest/x86_64 Oracle Linux 7Server Latest (x86_64) 23,671
repolist: 24,466

Install docker-engine
[root@localhost ~]# yum install docker-engine
Loaded plugins: langpacks, ulninfo
--> Running transaction check
---> Package docker-engine.x86_64 0:17.06.2.ol-1.0.1.el7 will be installed
...
...
...
Running transaction
Installing :2:container-selinux-2.21-1.el7.noarch
Installing : docker-engine-17.06.2.ol-1.0.1.el7.x86_64
Verifying : docker-engine-17.06.2.ol-1.0.1.el7.x86_64
Verifying :2:container-selinux-2.21-1.el7.noarch
Installed:
docker-engine.x86_64 0:17.06.2.ol-1.0.1.el7

Install docker-engine - check
[root@localhost ~]# docker version
Client:
Version: 17.06.2-ol
API version: 1.30
Go version: go1.8.3
Git commit: d02b7ab
Built: Fri Oct 6 00:02:23 2017
OS/Arch: linux/amd64
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the
docker daemon running?

Enable non-root user (optional)
[root@localhost ~]# id oracle
uid=1000(oracle) gid=1001(oracle) groups=1001(oracle),1000(dba)
[root@localhost ~]# usermod -a -G docker oracle
[root@localhost ~]# id oracle
uid=1000(oracle) gid=1001(oracle) groups=1001(oracle),1000(dba),981(docker)

Increase base image size (optional)
[root@localhost ~]# cat /etc/sysconfig/docker-storage
# This file may be automatically generated by an installation program.
# By default, Docker uses a loopback-mounted sparse file in
# /var/lib/docker. The loopback makes it slower, and there are some
# restrictive defaults, such as 100GB max storage.
DOCKER_STORAGE_OPTIONS= --storage-driver devicemapper --storage-opt
dm.basesize=25G

Start and enable Docker service
[root@localhost ~]# systemctl start docker
[root@localhost ~]# systemctl enable docker
Created symlink from /etc/systemd/system/multi-
user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.

Start and enable Docker service - check
[root@localhost ~]# systemctl status docker
● docker.service - Docker Application Container Engine
Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor
preset: disabled)
Drop-In: /etc/systemd/system/docker.service.d
└─docker-sysconfig.conf
Active: active (running) since Mon 2018-01-15 21:21:22 EST; 49s ago
Docs: https://docs.docker.com
Main PID: 2013 (dockerd)

Start and enable Docker service - check
[root@localhost ~]# docker version
Client: Version: 17.06.2-ol
API version: 1.30
Go version: go1.8.3
Git commit: d02b7ab
Built: Fri Oct 6 00:02:23 2017
Server:
Version: 17.06.2-ol
API version: 1.30 (minimum version 1.12)
Go version: go1.8.3
Git commit: d02b7ab
Built: Fri Oct 6 00:03:48 2017
Experimental: false

Building an Oracle Database Docker image
1) Download GitHub build files
2) Download Oracle DB Installer zip file
3) Run image build script

Download GitHub build files

Download GitHub build files
[oracle@localhost docker]$ wget https://github.com/oracle/docker-
images/archive/master.zip
Length: unspecified [application/zip]
Saving to: ‘master.zip’
[oracle@localhost docker]$ unzip master.zip
[oracle@localhost OracleDatabase]$ cd docker-images-master/OracleDatabase/

Download Oracle DB Installer zip file

Run Image build
[oracle@localhost ~]$ mv linuxx64_12201_database.zip docker/docker-images-
master/OracleDatabase/dockerfiles/12.2.0.1/
[oracle@localhost ~]$ cd docker/docker-images-
master/OracleDatabase/dockerfiles
[oracle@localhost dockerfiles]$ ./buildDockerImage.sh –e
Checking if required packages are present and valid...
linuxx64_12201_database.zip: OK
...
...
...
Successfully built 14e4a95bf3d3
Successfully tagged oracle/database:12.2.0.1-ee
Oracle Database Docker Image for 'ee' version 12.2.0.1 is ready to be
extended:
--> oracle/database:12.2.0.1-ee
Build completed in 896 seconds.

Running an Oracle Database inside Docker
1) Simple
2) Reusable
3) Advanced

Running an Oracle Database - simple
[oracle@localhost docker]$ docker run -p 1521:1521 oracle/database:12.2.0.1-ee
ORACLE PASSWORD FOR SYS, SYSTEM AND PDBADMIN: PGWrXXpL3Us=1
LSNRCTL for Linux: Version 12.2.0.1.0 - Production on 19-JAN-2018 19:27:38
...
...
#########################
DATABASE IS READY TO USE!
#########################
The following output is now a tail of the alert.log:
Completed: alter pluggable database ORCLPDB1 open

Running an Oracle Database - reusable
[oracle@localhost ~]$ docker volume create oradata
oradata
[oracle@localhost ~]$ docker run --name oracle-ee -p 1521:1521 -v
oradata:/opt/oracle/oradata oracle/database:12.2.0.1-ee
ORACLE PASSWORD FOR SYS, SYSTEM AND PDBADMIN: aUlBB4E0Rj4=1
...
...
#########################
DATABASE IS READY TO USE!
#########################
The following output is now a tail of the alert.log:
Completed: alter pluggable database ORCLPDB1 open
[oracle@localhost ~]$ docker exec oracle-ee ./setPassword.sh LetsDocker
Connected to:
Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
SQL>
User altered.
SQL>
User altered.

Running an Oracle Database - advanced
docker run --name <container name>
-p <host port>:1521 -p <host port>:5500
-e ORACLE_SID=<your SID>
-e ORACLE_PDB=<your PDB name>
-e ORACLE_PWD=<your database passwords>
-e ORACLE_CHARACTERSET=<your character set>
-v [<host mount point>:]/opt/oracle/oradata
oracle/database:12.2.0.1-ee

Run small Image build – requires exper. features
[root@localhost ~]# cat /etc/docker/daemon.json
{
"experimental": true
}
[root@localhost ~]# docker info
...
...
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
Experimental: true

Run small Image build – requires exper. features
[oracle@localhost ~]$ mv linuxx64_12201_database.zip docker/docker-images-
master/OracleDatabase/dockerfiles/12.2.0.1/
[oracle@localhost ~]$ cd docker/docker-images-
master/OracleDatabase/dockerfiles
[oracle@localhost dockerfiles]$ ./buildDockerImage.sh –e –o --squash
Checking if required packages are present and valid...
linuxx64_12201_database.zip: OK
...
...
...
Successfully built 14e4a95bf3d3
Successfully tagged oracle/database:12.2.0.1-ee
Oracle Database Docker Image for 'ee' version 12.2.0.1 is ready to be
extended:
--> oracle/database:12.2.0.1-ee
Build completed in 896 seconds.

Proxy settings
[root@localhost ~]# cat /etc/systemd/system/docker.service.d/http-proxy.conf
[Service]
Environment="HTTP_PROXY=http://www-proxy.example.com:80”
[root@localhost ~]# cat /etc/systemd/system/docker.service.d/https-proxy.conf
[Service]
Environment="HTTPS_PROXY=https://www-proxy.example.com:80”
[root@localhost ~]# docker info
Containers: 0
Running: 0
Paused: 0
Stopped: 0
Images: 17
Http Proxy: http://www-proxy.example.com:80
Https Proxy: https://www-proxy.example.com:80

User defined passwords
[oracle@localhost ~]$ docker run --name <container name>

User defined passwords
[oracle@localhost ~]$ docker run -p 1521:1521
-e ORACLE_PWD=LetsDocker oracle/database:12.2.0.1-ee
ORACLE PASSWORD FOR SYS, SYSTEM AND PDBADMIN: LetsDocker
gvenzl-mac:~ gvenzl$ sql sys/LetsDocker@//localhost:1521/ORCLCDB as sysdba
SQLcl: Release 17.2.0 Production on Sat Jan 20 13:16:47 2018
Copyright (c) 1982, 2018, Oracle. All rights reserved.
Connected to:

Custom SID and PDB names
docker run --name <container name>

Custom SID and PDB names
[oracle@localhost ~]$ docker run
--name gerald
-p 1521:1521
-e ORACLE_SID=GERALD
-e ORACLE_PDB=GeraldPod1
-v oradata:/opt/oracle/oradata oracle/database:12.2.0.1-ee
gvenzl-mac:~ gvenzl$ sql sys/OfgF4jjhB9U=1@//localhost:1521/GeraldPod1 as
sysdba
SQL> select instance_name from v$instance;
INSTANCE_NAME
----------------
GERALD

Passwords reset
[oracle@localhost ~]$ docker exec -ti gerald ./setPassword.sh LetsDocker
SQL*Plus: Release 12.2.0.1.0 Production on Sat Jan 20 11:19:36 2018
Copyright (c) 1982, 2016, Oracle. All rights reserved.
Connected to:
SQL>
User altered.
SQL>
User altered.
SQL>
Session altered.
SQL>
User altered.
SQL> Disconnected from Oracle Database 12c Enterprise Edition Release
12.2.0.1.0 - 64bit Production

Dockerizing Oracle Database

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