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The following sample setup has been done with Ubuntu server 20.04 on Virtual Machine as a HUB and Ubuntu server 20.04 on raspberry PI 3B as Agent.


Ubuntu server installation described under

...

The first movie shows Ubuntu Server installation. The same steps has to be performed on both HUB and Agent. The second movie shows procedure of Open Horizon HUB installation that was performed on VM.

Open Horizon HUB installation

...

The "deploy-mgmt-hub.sh" script has to downloaded downloaded  README.md first and variable "HZN_LISTEN_IP" has to be set to 0.0.0.0.

Code Block
curl -sSL https://raw.githubusercontent.com/open-horizon/devops/master/mgmt-hub/deploy-mgmt-hub.sh

Then run the script.


Code Block
titledeploy-mgmt-hub.sh output
sudo ./deploy-mgmt-hub.sh
[sudo] password for ubuntu:
------- Checking input and initializing...
Management hub services will listen on http://0.0.0.0
Updating apt-get package index...
Installing prerequisites, this could take a minute...
------- Downloading template files...
Substituting environment variables into template files...
------- Downloading/starting Horizon management hub services...
Downloading management hub docker images...
Pulling openhorizon/amd64_agbot:latest ...
Pulling openhorizon/amd64_exchange-api:latest ...
Pulling openhorizon/amd64_cloud-sync-service:latest ...
Pulling postgres:latest ...
Pulling mongo:latest ...
Pulling openhorizon/sdo-owner-services:latest ...
Starting management hub containers...
Creating network "hzn_horizonnet" with driver "bridge"
Creating volume "hzn_postgresvol" with default driver
Creating volume "hzn_mongovol" with default driver
Creating volume "hzn_agbotmsgkeyvol" with default driver
Creating volume "hzn_ocsdb" with default driver
Pulling postgres (postgres:latest)...
latest: Pulling from library/postgres
33847f680f63: Pull complete
1b09e96014b3: Pull complete
eb49b6d9d1f3: Pull complete
4057ebf78d2d: Pull complete
f92d870e2c4f: Pull complete
b03847575a18: Pull complete
475945131fa9: Pull complete
c042b5a6607d: Pull complete
cfe883b776dc: Pull complete
61af04e5c3eb: Pull complete
4e9965ae9062: Pull complete
7b9708b81aa6: Pull complete
871877336770: Pull complete
Digest: sha256:6647385dd9ae11aa2216bf55c54d126b0a85637b3cf4039ef24e3234113588e3
Status: Downloaded newer image for postgres:latest
Creating postgres ... done
Creating mongo ... done
Creating exchange-api ... done
Creating css-api ... done
Creating sdo-owner-services ... done
Creating agbot ... done
Waiting for the exchange.........
------- Creating the user org, the admin user in both orgs, and an agbot in the exchange...
Creating exchange hub admin user, and the admin user and agbot in the system org...
Creating exchange user org and admin user...
------- Downloading/installing/configuring Horizon agent and CLI...
Downloading the Horizon agent and CLI packages...
Installing the Horizon agent and CLI packages...
Configuring the Horizon agent and CLI...
Warning: can not find a public IP on this host, so the agent-install.cfg file that will be added to CSS will not be usable outside of the this host. You can explicitly specify the public IP via HZN_LISTEN_PUBLIC_IP.
Publishing /tmp/horizon-all-in-1/agent-install.cfg in CSS as public object agent-install.cfg in the IBM org...
Digital sign with SHA1 will be performed for data integrity. It will delay the MMS object publish.
Start hashing the file...
Data hash is generated. Start digital signing with the data hash...
Digital sign finished.
Object agent-install.cfg added to org IBM in the Model Management Service
------- Installing Horizon example services, policies, and patterns...
Using examples repo branch v2.29 derived from the hzn version
Cloning https://github.com/open-horizon/examples.git to /tmp/open-horizon/examples ...
Switching to branch v2.29 ...
Warning: examples branch 'v2.29' does not exist, falling back to the master branch
Publishing services and patterns of edge/services/cpu_percent to IBM org...
Publishing services and patterns of edge/services/gps to IBM org...
Publishing services and patterns of edge/services/helloworld to IBM org...
Publishing deployment policy of edge/services/helloworld to myorg org...
Publishing services and patterns of edge/services/helloMMS to IBM org...
Publishing services and patterns of edge/services/nginx-operator to IBM org...
Publishing deployment policy of edge/services/nginx-operator to myorg org...
Publishing services and patterns of edge/evtstreams/cpu2evtstreams to IBM org...
Publishing deployment policy of edge/evtstreams/cpu2evtstreams to myorg org...
Successfully published all examples to the exchange. Removing /tmp/open-horizon/examples directory.
------- Creating and registering the edge node with policy to run the helloworld Horizon example...
Waiting for the agent to be ready
Horizon Exchange base URL: http://127.0.0.1:3090/v1
Node myorg/node1 does not exist in the Exchange with the specified token, creating/updating it...
node added or updated
Node node1 created.
Will proceeed with the given node policy.
Updating the node policy...
Initializing the Horizon node with node type 'device'...
Note: no input file was specified. This is only valid if none of the services need variables set.
However, if there is 'userInput' specified in the node already in the Exchange, the userInput will be used.
Changing Horizon state to configured to register this node with Horizon...
Horizon node is registered. Workload services should begin executing shortly.
Waiting for up to 180 seconds for following services to start:
IBM/ibm.helloworld
Status of the services you are watching:
IBM/ibm.helloworld Progress so far: agreement proposal has been received
Status of the services you are watching:
IBM/ibm.helloworld Progress so far: agreement is accepted
Status of the services you are watching:
IBM/ibm.helloworld Progress so far: execution is started
Status of the services you are watching:
IBM/ibm.helloworld Success

----------- Summary of what was done:
1. Started Horizon management hub services: agbot, exchange, postgres DB, CSS, mongo DB
2. Created exchange resources: system org (IBM) admin user, user org (myorg) and admin user, and agbot
Automatically generated these passwords/tokens:
EXCHANGE_ROOT_PW=T2lICI9q5xvwtkeLPRrGZkcp5RUSwG
EXCHANGE_HUB_ADMIN_PW=3G84oId3MEk4S5BjOF3m6KRNfph5BT
EXCHANGE_SYSTEM_ADMIN_PW=khDHsRMe4Ca29gPZNp17dDirnbm1W0
AGBOT_TOKEN=aYGhdC7i6JPohkt4LXGkdq7NT99P1U
EXCHANGE_USER_ADMIN_PW=1eAVOw1dWRKve5b5KIkRk2PcBjXLnO
HZN_DEVICE_TOKEN=Zm4Y1wFgrUD2D1MTrtn1UmyBaOnn8u
Important: save these generated passwords/tokens in a safe place. You will not be able to query them from Horizon.
3. Installed and configured the Horizon agent and CLI (hzn)
4. Created a Horizon developer key pair
5. Installed the Horizon examples
6. Created and registered an edge node to run the helloworld example edge service
7. Added the hzn auto-completion file to ~/.bashrc (but you need to source that again for it to take effect in this shell session)

For what to do next, see: https://github.com/open-horizon/devops/blob/master/mgmt-hub/README.md#all-in-1-what-next
Before running the commands in the What To Do Next section, copy/paste/run these commands in your terminal:
export HZN_ORG_ID=myorg
export HZN_EXCHANGE_USER_AUTH=admin:1eAVOw1dWRKve5b5KIkRk2PcBjXLnO
ubuntu@ubun2:~$

...

Verify that docker containers are running under 0.0.0.0.

Code Block
ubuntu@ubun2:~$ docker container ps

CONTAINER ID   IMAGE COMMAND CREATED STATUS PORTS NAMES  89d149cab8af openhorizon/ibm.helloworld_amd64 "/bin/sh -c /service…" 3  days ago Up About an hour faf1ba0cfc9ec7344d985b23856427c54841d773f75a9ffa8a90db5a1db9ceca-ibm.helloworld  38852a8c7957 openhorizon/amd64_agbot:latest "/bin/sh -c /usr/hor…" 3 days ago Up 59 minutes (healthy) 127.0.0.1:3110->8080/tcp, 0.0.0.0:3111->8083/tcp agbot  71cc38d60c24 openhorizon/sdo-owner-services:latest "/bin/sh -c $WORKDIR…" 3 days ago Up About an hour (healthy) 0.0.0.0:8040->8040/tcp, 0.0.0.0:8042->8042/tcp, 0.0.0.0:9008->9008/tcp sdo-owner-services

324a6a4009af openhorizon/amd64_cloud-sync-service:latest "/usr/edge-sync-serv…" 3 days ago Up About an hour (healthy) 0.0.0.0:9443->8080/tcp css-api

587afb807273 openhorizon/amd64_exchange-api:latest "/bin/sh -c '/usr/bi…" 3 days ago Up About an hour (healthy) 8083/tcp, 0.0.0.0:3090->8080/tcp exchange-api

15e71961ae9b mongo:latest "docker-entrypoint.s…" 3 days ago Up About an hour (healthy) 27017/tcp mongo

98b48ab9ccaf postgres:latest "docker-entrypoint.s…" 3 days ago Up About an hour (healthy) 5432/tcp postgres

Agent installation

Agent deb packages are available for different architectures under Agent releases.

Configuration after installation Open Horizon Management Hub and Agent

Next steps requires setting proper environmental variables on both HUB and Agent sites according to SDO-OH-EXF-dev-simple.

Code Block
titleEnvironemtal variables
export HZN_ORG_ID=myorg
export HZN_EXCHANGE_USER_AUTH=admin:<insert value from installation credentials>
export HZN_DEVICE_TOKEN=<insert value from installation credentials or use random string>
export HZN_DEVICE_ID=node1
export HZN_EXCHANGE_URL=http://<HUB-IP-address-here>:3090/v1/
export HZN_FSS_CSSURL=http://<HUB-IP-address-here>:9443/

HUB requires to set HZN_ORG_ID and HZN_EXCHANGE_USER_AUTH. For Agent all those variables has to be set.

Check configuration

Code Block
titleLocal HUB variables
ubuntu@ubun2:~$ env | grep HZN
HZN_ORG_ID=myorg
HZN_EXCHANGE_USER_AUTH=admin:1eAVOw1dWRKve5b5KIkRk2PcBjXLnO
Code Block
titleAgent environmental variables
ubuntu@ubun2:~$ env | grep HZN
HZN_ORG_ID=myorg
HZN_EXCHANGE_USER_AUTH=admin:1eAVOw1dWRKve5b5KIkRk2PcBjXLnO

NOTE: Environmental variables can be added to ~/.bashrc file to it will be set automatically at startup.

Check whether exchange container is accessible outside on HUB and agent site

Code Block
curl -s http://<HUB-machine-ip-addres>:3090/v1/admin/version

Sample output

Code Block
2.78.0

How to use Open Horizon

https://open-horizon.github.io/common-requests/use.html

Trying to configure agent

Issues:

Agent configuration

https://open-horizon.github.io/docs/installing/automated_install.html

...

  COMMAND                  CREATED      STATUS                       PORTS                                                                    NAMES
89d149cab8af   openhorizon/ibm.helloworld_amd64              "/bin/sh -c /service…"   6 days ago   Up About an hour                                                                                      faf1ba0cfc9ec7344d985b23856427c54841d773f75a9ffa8a90db5a1db9ceca-ibm.helloworld
38852a8c7957   openhorizon/amd64_agbot:latest                "/bin/sh -c /usr/hor…"   6 days ago   Up About an hour (healthy)   127.0.0.1:3110->8080/tcp, 0.0.0.0:3111->8083/tcp                         agbot
71cc38d60c24   openhorizon/sdo-owner-services:latest         "/bin/sh -c $WORKDIR…"   6 days ago   Up About an hour (healthy)   0.0.0.0:8040->8040/tcp, 0.0.0.0:8042->8042/tcp, 0.0.0.0:9008->9008/tcp   sdo-owner-services
324a6a4009af   openhorizon/amd64_cloud-sync-service:latest   "/usr/edge-sync-serv…"   6 days ago   Up About an hour (healthy)   0.0.0.0:9443->8080/tcp                                                   css-api
587afb807273   openhorizon/amd64_exchange-api:latest         "/bin/sh -c '/usr/bi…"   6 days ago   Up About an hour (healthy)   8083/tcp, 0.0.0.0:3090->8080/tcp                                         exchange-api
15e71961ae9b   mongo:latest                                  "docker-entrypoint.s…"   6 days ago   Up About an hour (healthy)   27017/tcp                                                                mongo
98b48ab9ccaf   postgres:latest                               "docker-entrypoint.s…"   6 days ago   Up About an hour (healthy)   5432/tcp                                                                 postgres
ubuntu@ubun2:~$

Agent installation

Agent deb packages are available for different architectures under Agent releases. For more information check section "Agent installation and registration".

Configuration after installation Open Horizon Management Hub and Agent

Next steps requires setting proper environmental variables on both HUB and Agent sites according to SDO-OH-EXF-dev-simple.

Code Block
titleEnvironemtal variables
export HZN_ORG_ID=myorg
export HZN_EXCHANGE_USER_AUTH=admin:<insert value from installation credentials>
export HZN_DEVICE_TOKEN=<insert value from installation credentials or use random string>
export HZN_DEVICE_ID=node1
export HZN_EXCHANGE_URL=http://<HUB-IP-address-here>:3090/v1/
export HZN_FSS_CSSURL=http://<HUB-IP-address-here>:9443/

HUB requires to set HZN_ORG_ID and HZN_EXCHANGE_USER_AUTH. For Agent all those variables has to be set.

Check configuration

Code Block
titleLocal HUB variables
ubuntu@ubun2:~$ env | grep HZN
HZN_ORG_ID=myorg
HZN_EXCHANGE_USER_AUTH=admin:1eAVOw1dWRKve5b5KIkRk2PcBjXLnO


Code Block
titleAgent environmental variables
ubuntu@ubuntu:~$ env | grep HZN
HZN_DEVICE_TOKEN=Zm4Y1wFgrUD2D1MTrtn1UmyBaOnn8u
HZN_DEVICE_ID=node1
HZN_ORG_ID=myorg
HZN_EXCHANGE_USER_AUTH=admin:1eAVOw1dWRKve5b5KIkRk2PcBjXLnO
HZN_EXCHANGE_URL=http://192.168.100.32:3090/v1/
HZN_FSS_CSSURL=http://192.168.100.32:9443/
ubuntu@ubuntu:~$


NOTE: Environmental variables can be added to ~/.bashrc file so it will be set automatically at startup.


Run commands from How to use Open Horizon on both HUB and Agent to check configuration. Sample output is as follows.

Code Block
titleHUB hzn version
ubuntu@ubun2:~$ hzn version
Horizon CLI version: 2.29.0-515
Horizon Agent version: 2.29.0-515
ubuntu@ubun2:~$


Code Block
titleHUB hzn node list
ubuntu@ubun2:~$ hzn node list
{
  "id": "node1",
  "organization": "myorg",
  "pattern": "",
  "name": "node1",
  "nodeType": "device",
  "token_last_valid_time": "2021-07-29 23:00:54 +0000 UTC",
  "token_valid": true,
  "ha": false,
  "configstate": {
    "state": "configured",
    "last_update_time": "2021-07-29 23:00:54 +0000 UTC"
  },
  "configuration": {
    "exchange_api": "http://127.0.0.1:3090/v1/",
    "exchange_version": "2.78.0",
    "required_minimum_exchange_version": "2.44.0",
    "preferred_exchange_version": "2.76.0",
    "mms_api": "http://127.0.0.1:9443",
    "architecture": "amd64",
    "horizon_version": "2.29.0-515"
  }
}
ubuntu@ubun2:~$


Code Block
titleHUB hzn agreement list
ubuntu@ubun2:~$ hzn agreement list
[
  {
    "name": "Policy for myorg/node1 merged with myorg/policy-ibm.helloworld_1.0.0",
    "current_agreement_id": "faf1ba0cfc9ec7344d985b23856427c54841d773f75a9ffa8a90db5a1db9ceca",
    "consumer_id": "IBM/agbot",
    "agreement_creation_time": "2021-07-29 23:01:06 +0000 UTC",
    "agreement_accepted_time": "2021-07-29 23:01:09 +0000 UTC",
    "agreement_finalized_time": "2021-07-29 23:01:22 +0000 UTC",
    "agreement_execution_start_time": "2021-07-29 23:01:12 +0000 UTC",
    "agreement_data_received_time": "",
    "agreement_protocol": "Basic",
    "workload_to_run": {
      "url": "ibm.helloworld",
      "org": "IBM",
      "version": "1.0.0",
      "arch": "amd64"
    }
  }
]
ubuntu@ubun2:~$


Code Block
titleAgent hzn version
ubuntu@ubuntu:~$ hzn version
Horizon CLI version: 2.29.0-498
Horizon Agent version: 2.29.0-498
ubuntu@ubuntu:~$


Code Block
titleAgent hzn node list
ubuntu@ubuntu:~$ hzn node list
{
  "id": "node1",
  "organization": null,
  "pattern": null,
  "name": null,
  "nodeType": null,
  "token_last_valid_time": "",
  "token_valid": null,
  "ha": null,
  "configstate": {
    "state": "unconfigured",
    "last_update_time": ""
  },
  "configuration": {
    "exchange_api": "http://192.168.100.32:3090/v1/",
    "exchange_version": "2.78.0",
    "required_minimum_exchange_version": "2.44.0",
    "preferred_exchange_version": "2.76.0",
    "mms_api": "http://192.168.100.32:9443",
    "architecture": "arm",
    "horizon_version": "2.29.0-498"
  }
}
ubuntu@ubuntu:~$ 


Code Block
titleAgent hzn agreement list
ubuntu@ubuntu:~$ hzn agreement list
[]
ubuntu@ubuntu:~$


Check whether exchange container is accessible outside on HUB and agent site

Code Block
curl -s http://<HUB-machine-ip-addres>:3090/v1/admin/version

Sample output

Code Block
2.78.0

Investigate:

https://github.com/open-horizon/anax/blob/master/docs/api.md

Agent installation and registration

Install docker

follow

https://docs.docker.com/engine/install/ubuntu/

Install required dependencies by Agent.
Code Block
sudo apt-get install jq


then download and install agent package from

https://github.com/open-horizon/anax/releases

Follow

https://open-horizon.github.io/docs/installing/advanced_man_install.html

to change

Code Block
/etc/default/horizon

like following

Code Block
ubuntu@ubuntu:~$ cat /etc/default/horizon
HZN_EXCHANGE_URL=http://192.168.100.32:3090/v1
HZN_FSS_CSSURL=http://192.168.100.32:9443/
HZN_AGBOT_URL=http://127.0.0.1:3111
HZN_MGMT_HUB_CERT_PATH=
HZN_DEVICE_ID=node1
HZN_AGENT_PORT=8510
ubuntu@ubuntu:~$

Next restart horizon service to apply changed settings.

Code Block
sudo systemctl restart horizon.service
Check configuration
Code Block
ubuntu@ubuntu:~$ hzn version
Horizon CLI version: 2.29.0-537
Horizon Agent version: 2.29.0-537
ubuntu@ubuntu:~$


Code Block
ubuntu@ubuntu:~$ hzn exchange version
2.78.0
ubuntu@ubuntu:~$


Code Block
ubuntu@ubuntu:~$ hzn node list
{
  "id": "node1",
  "organization": "myorg",
  "pattern": "IBM/pattern-ibm.helloworld",
  "name": "node1",
  "nodeType": "device",
  "token_last_valid_time": "2021-08-10 00:15:28 +0000 UTC",
  "token_valid": true,
  "ha": false,
  "configstate": {
    "state": "configured",
    "last_update_time": "2021-08-10 00:15:29 +0000 UTC"
  },
  "configuration": {
    "exchange_api": "http://192.168.100.32:3090/v1/",
    "exchange_version": "2.78.0",
    "required_minimum_exchange_version": "2.44.0",
    "preferred_exchange_version": "2.81.0",
    "mms_api": "http://192.168.100.32:9443",
    "architecture": "arm64",
    "horizon_version": "2.29.0-537"
  }
}
ubuntu@ubuntu:~$ 

Check available patterns

Code Block
ubuntu@ubuntu:~$ hzn exchange pattern list IBM/
[
  "IBM/pattern-ibm.cpu2evtstreams",
  "IBM/pattern-ibm.hello-mms-arm",
  "IBM/pattern-ibm.hello-mms",
  "IBM/pattern-nginx-operator-amd64",
  "IBM/pattern-ibm.helloworld",
  "IBM/pattern-ibm.hello-mms-amd64",
  "IBM/pattern-ibm.hello-mms-arm64"
]
ubuntu@ubuntu:~$ 

Register agent. Instead of

Code Block
hzn register -p IBM/pattern-ibm.helloworld

run

Code Block
hzn register -p IBM/pattern-ibm.helloworld -s ibm.helloworld --serviceorg IBM
from 
https://github.com/open-horizon/examples/blob/master/edge/services/helloworld/README.md#preconditions
Code Block
ubuntu@ubuntu:~$ hzn register -p IBM/pattern-ibm.helloworld -s ibm.helloworld --serviceorg IBM
Horizon Exchange base URL: http://192.168.100.32:3090/v1
Using node ID 'node1' from the Horizon agent
Generated random node token
Updating node token...
Will proceeed with the given pattern IBM/pattern-ibm.helloworld.
Initializing the Horizon node with node type 'device'...
Note: no input file was specified. This is only valid if none of the services need variables set.
However, if there is 'userInput' specified in the node already in the Exchange, the userInput will be used.
Changing Horizon state to configured to register this node with Horizon...
Horizon node is registered. Workload services should begin executing shortly.
Waiting for up to 60 seconds for following services to start:
	IBM/ibm.helloworld
Status of the services you are watching:
	IBM/ibm.helloworld 	Progress so far: agreement proposal has been received
Status of the services you are watching:
	IBM/ibm.helloworld 	Progress so far: agreement is accepted
Status of the services you are watching:
	IBM/ibm.helloworld 	Progress so far: service is created
Status of the services you are watching:
	IBM/ibm.helloworld 	Progress so far: execution is started
Status of the services you are watching:
	IBM/ibm.helloworld 	Success
ubuntu@ubuntu:~$ 


Code Block
ubuntu@ubuntu:~$  hzn agreement list
[
  {
    "name": "pattern-ibm.helloworld_ibm.helloworld_IBM_arm64 merged with pattern-ibm.helloworld_ibm.helloworld_IBM_arm64",
    "current_agreement_id": "8c61ebcabbafcf380758739116cb5603bed33d64984862a910c20c56a6b003b6",
    "consumer_id": "IBM/agbot",
    "agreement_creation_time": "2021-08-10 00:15:37 +0000 UTC",
    "agreement_accepted_time": "2021-08-10 00:15:40 +0000 UTC",
    "agreement_finalized_time": "2021-08-10 00:15:48 +0000 UTC",
    "agreement_execution_start_time": "2021-08-10 00:15:48 +0000 UTC",
    "agreement_data_received_time": "",
    "agreement_protocol": "Basic",
    "workload_to_run": {
      "url": "ibm.helloworld",
      "org": "IBM",
      "version": "1.0.0",
      "arch": "arm64"
    }
  }
]
ubuntu@ubuntu:~$ 

Check whether docker container is running.

Code Block
ubuntu@ubuntu:~$ docker ps
CONTAINER ID   IMAGE                              COMMAND                  CREATED         STATUS         PORTS     NAMES
6a8c986c5955   openhorizon/ibm.helloworld_arm64   "/bin/sh -c /service…"   4 minutes ago   Up 4 minutes             8c61ebcabbafcf380758739116cb5603bed33d64984862a910c20c56a6b003b6-ibm.helloworld

Check logs from running container.

Code Block
ubuntu@ubuntu:~$ hzn service log -f ibm.helloworld
Found service ibm.helloworld with service id 8c61ebcabbafcf380758739116cb5603bed33d64984862a910c20c56a6b003b6.
Displaying log messages of container ibm.helloworld for service ibm.helloworld with service id 8c61ebcabbafcf380758739116cb5603bed33d64984862a910c20c56a6b003b6.
Use ctrl-C to terminate this command.
Aug 10 00:15:48 ubuntu workload-8c61ebcabbafcf380758739116cb5603bed33d64984862a910c20c56a6b003b6_ibm.helloworld[1934]: node1 says: Hello World!!
Aug 10 00:15:51 ubuntu workload-8c61ebcabbafcf380758739116cb5603bed33d64984862a910c20c56a6b003b6_ibm.helloworld[1934]: node1 says: Hello World!!
Aug 10 00:15:54 ubuntu workload-8c61ebcabbafcf380758739116cb5603bed33d64984862a910c20c56a6b003b6_ibm.helloworld[1934]: node1 says: Hello World!!
Aug 10 00:15:57 ubuntu workload-8c61ebcabbafcf380758739116cb5603bed33d64984862a910c20c56a6b003b6_ibm.helloworld[1934]: node1 says: Hello World!!
Aug 10 00:16:00 ubuntu workload-8c61ebcabbafcf380758739116cb5603bed33d64984862a910c20c56a6b003b6_ibm.helloworld[1934]: node1 says: Hello World!!
Aug 10 00:16:03 ubuntu workload-8c61ebcabbafcf380758739116cb5603bed33d64984862a910c20c56a6b003b6_ibm.helloworld[1934]: node1 says: Hello World!!
Aug 10 00:16:06 ubuntu workload-8c61ebcabbafcf380758739116cb5603bed33d64984862a910c20c56a6b003b6_ibm.helloworld[1934]: node1 says: Hello World!!


TODO Check what is the procedure for using custom containers.