Setup simple environment with Docker over openSuSE

[fernandohackbart]

• Install openSuSE docker: 192.168.1.200

• Install Docker package zypper install -y Docker

  S  | Name                            | Summary                                                                     | Type
  ---+---------------------------------+-----------------------------------------------------------------------------+--------
  i+ | docker                          | The Linux container runtime                                                 | package
  i  | docker-bash-completion          | Bash Completion for docker                                                  | package
  i  | docker-image-migrator           | No-downtime migration tool for Docker v1 image manifests.                   | package
  i  | docker-libnetwork               | Docker Networking                                                           | package
  i  | docker-runc                     | Tool for spawning and running OCI containers                                | package
  i  | docker-zsh-completion           | Zsh Completion for docker                                                   | package

systemctl start docker
systemctl enable docker
systemctl stop docker
systemctl restart docker

[fernandohackbart]

• Install Java zypper install -y java java-1_8_0-openjdk java-1_8_0-openjdk-devel

[fernandohackbart]

• Install SBT

  mkdir /opt/sbt/stage
  cd /opt/sbt/stage
  wget https://cocl.us/sbt01316tgz
  tar xvzf sbt01316tg
  mv sbt/* ..
  mv /etc/inputrc /etc/inputrc-ignore

  cat >> /root/.bash_profile <<EOF
  export PATH=/opt/sbt/bin:\$PATH
  EOF

[fernandohackbart]

• Run Jenkins docker run --name jenkins -d -p 8080:8080 -p 50000:50000 -v /opt/docker/jenkins/jenkins_home:/var/jenkins_home jenkins/jenkins:lts

docker stop jenkins
docker start jenkins

[fernandohackbart]

• Run BIND docker pull sameersbn/bind docker run --name bind -d --restart=always --network bikeride-network --ip 172.18.0.100 -p 53:53/tcp -p 53:53/udp -p 10000:10000/tcp --volume /opt/docker/bind:/data sameersbn/bind

docker stop bind
docker start bind

# docker inspect bind|grep IPAddress
            "SecondaryIPAddresses": null,
            "IPAddress": "172.17.0.2",
                    "IPAddress": "172.17.0.2",

[fernandohackbart]

• Configure host DNS lookup over bind
  • Using yast2

cat /etc/resolv.conf
nameserver 172.17.0.2
nameserver 192.168.1.1

[fernandohackbart]

• Create bikeride.com master DNS zone

http://192.168.1.200:10000

docker:/opt/docker/bind/bind # dig cassandra.bikeride.com @172.17.0.2

; <<>> DiG 9.10.4-P5 <<>> cassandra.bikeride.com @172.17.0.2
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 47500
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;cassandra.bikeride.com.                IN      A

;; ANSWER SECTION:
cassandra.bikeride.com. 38400   IN      A       172.18.0.3

;; AUTHORITY SECTION:
bikeride.com.           38400   IN      NS      c7cbd54d5f7e.

;; Query time: 0 msec
;; SERVER: 172.17.0.2#53(172.17.0.2)
;; WHEN: Sat Oct 07 07:50:38 CEST 2017
;; MSG SIZE  rcvd: 93

[fernandohackbart]

• Create bikeride network

To create

docker network ls
docker network create --driver bridge --subnet=172.18.0.0/16 bikeride-network

To remove

docker network rm bikeride-network

[fernandohackbart]

• Run Cassandra

docker pull cassandra
docker run -d --name cassandra --network bikeride-network --ip 172.18.0.3 -p  9042:9042 -i cassandra

docker start cassandra
docker attach cassandra
docker stop cassandra

[fernandohackbart]

• Run Kafka

  docker pull spotify/kafka
  docker run -d --name kafka --network bikeride-network --ip 172.18.0.4 -p  9094:9094 -i spotify/kafka

  docker start kafka
  docker attach kafka
  docker stop kafka

[fernandohackbart]

• Run Cassandra CQLSH (when required)

From ouside the host docker run -it --name cassandra-cqlsh --rm cassandra sh -c 'exec cqlsh "192.168.1.200"'

From inside the host docker run -it --name cassandra-cqlsh --link cassandra --network bikeride-network --ip 172.18.0.5 --rm cassandra sh -c 'exec cqlsh "172.18.0.3"'

select * from biker.bikers;
select * from biker.biker_email;
select * from track.tracks;
select * from track.trackwaypoints;

[fernandohackbart]

Using the hostname should work

docker:/opt/docker/bind/bind # docker run -it --name cassandra-cqlsh --link cassandra --network bikeride-network --ip 172.18.0.5 --rm cassandra sh -c 'exec cqlsh "cassandra.bikeride.com"'
Traceback (most recent call last):
  File "/usr/bin/cqlsh.py", line 2428, in <module>
    main(*read_options(sys.argv[1:], os.environ))
  File "/usr/bin/cqlsh.py", line 2407, in main
    encoding=options.encoding)
  File "/usr/bin/cqlsh.py", line 479, in __init__
    load_balancing_policy=WhiteListRoundRobinPolicy([self.hostname]),
  File "/usr/share/cassandra/lib/cassandra-driver-internal-only-3.10.zip/cassandra-driver-3.10/cassandra/policies.py", line 417, in __init__
socket.gaierror: [Errno -2] Name or service not known

[fernandohackbart]

If needed to clean some brtfs volumes lost docker:/var/lib/docker # btrfs subvolume delete btrfs/subvolumes/*

[fernandohackbart]

If need to inspect the network

http://jodies.de/ipcalc

docker network inspect bridge
docker network inspect bikeride-network