Nutanix Docker Volume Plugin (DVP) demo run through

Nutanix DVP demo script

demo notes for Docker volume driver 

o cluster VIP / Dataservices VIP

o clone Docker host VM from gold image in AHV (set hostname vis hostnamectl set-hostname)

o login and install Docker Engine (https://docs.docker.com/engine/installation/linux/docker-ce/centos/)

o enable/start docker service 

o docker run hello world (basic test)

o docker images/ docker ps (-a) / docker version


Note : DVP supported on RHEL/CentOS and Ubuntu distros of Linux

o install Docker volume plugin (DVP) -(https://store.docker.com/plugins/nutanix-dvp-docker-volume-plug-in)

Install a docker version >= 1.13 by following the instructions here
yum install iscsi-initiator-utils
systemd-tmpfiles --create
systemctl start iscsid
systemctl enable iscsid

Ensure iscsid is running using: systemctl status iscsid

docker plugin install ntnx/nutanix_volume_plugin PRISM_IP="10.68.64.55" DATASERVICES_IP="10.68.64.254" PRISM_PASSWORD="Nutanix/1234u" PRISM_USERNAME="admin" DEFAULT_CONTAINER="DEFAULT-CTR" --alias nutanix

o docker plugin ls
ID                  NAME                DESCRIPTION                        ENABLED
94309f7a2ff0        nutanix:latest      Nutanix volume plugin for docker   true


o create docker volume

docker volume create -d nutanix pgdata01
pgdata01


	show in prism!!


o create docker container to run posgresql db

docker run -d --name pg01 -p 5432:5432 --volume-driver nutanix -v pgdata01:/var/lib/postgresql/data postgres:latest

- > show using docker ps

o connect to container

docker exec -it pg01 /bin/bash


o create a postgres db

psql -U postgres

\l

CREATE DATABASE supergroup with owner postgres;

\l

(should see supergroup db)


\q

exit out of ctr

o stop and kill docker ctr

# docker stop pg01
pg01
[root@supergroupdemo01 ~]# docker rm pg01
pg01
[root@supergroupdemo01 ~]# docker ps -a


o now repeat for new container and show volume reuse:

docker run -d --name pg02 -p 5432:5432 --volume-driver nutanix -v pgdata01:/var/lib/postgresql/data postgres:latest
a55b9b59e2577b0f91b0af70c106e51e7f3db7216080558caf9654b3372e80bc

[root@supergroupdemo01 ~]# docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                    NAMES
a55b9b59e257        postgres:latest     "docker-entrypoint..."   16 seconds ago      Up 4 seconds        0.0.0.0:5432->5432/tcp   pg02

[root@supergroupdemo01 ~]# docker exec -it pg02 /bin/bash
root@a55b9b59e257:/# psql -U postgres
psql (10.0)
Type "help" for help.

postgres=# \l
                                 List of databases
    Name    |  Owner   | Encoding |  Collate   |   Ctype    |   Access privileges
------------+----------+----------+------------+------------+-----------------------
 postgres   | postgres | UTF8     | en_US.utf8 | en_US.utf8 |
 supergroup | postgres | UTF8     | en_US.utf8 | en_US.utf8 |
 template0  | postgres | UTF8     | en_US.utf8 | en_US.utf8 | =c/postgres          +
            |          |          |            |            | postgres=CTc/postgres
 template1  | postgres | UTF8     | en_US.utf8 | en_US.utf8 | =c/postgres          +
            |          |          |            |            | postgres=CTc/postgres
(4 rows)

postgres=# \q
root@a55b9b59e257:/# exit
exit