Saturday, February 15, 2020

An unplanned trip to Tejakula

Les Waterfalls
My trip to Bali, and Tejakula specifically, was entirely unplanned. I was in Singapore and decided to visit Bali. I had some good time, especially a small hike to my first waterfalls outside Sri Lanka. Unfortunately, it was raining heavily in Singapore and Indonesia. But not too bad, as I still had some good time and great memories. I hope to return to Indonesia and Bali in the future. I like the country and the island.

Tuesday, February 11, 2020

Free Overnight Stay in Doha, Qatar

Museum of Islamic Art
Qatar Airways offers a free transit visa (need to specifically apply through their website) to Qatar and an overnight stay in Doha in a five-star hotel, if your flight has Doha as a transit through Qatar Airways (booked directly), and has 24 - 48 hours time window. This applies only if the flight originates from the USA.

There was some confusion. Qatar Airways failed to send me a hotel voucher. Their Twitter account told me that I won't receive the free stay since there was another earlier flight option available. After explaining their own Terms and Conditions to them, I received the hotel booking sorted out!

Katara Cultural Village
I stayed in Marriott Marquis City Centre Doha. It is a nice hotel, close to the metro station. The metro station connects the airport directly. I visited Souq (the market) with a friend in the evening of my arrival. Then I went to Katara Cultural village the next morning and then went to the West Bay and the National Museum. I enjoyed Doha a lot. Although my stay was only 2 days (around 27 hours), as I was actively visiting around, I managed to see many places in a short time.

It was indeed a pleasant stay. Thanks, Qatar!

Thursday, February 6, 2020

Personality Traits..

So I was trying some online personality tests and got some interesting (sometimes contradictory to each other) results.

 ENFJ-T

From ITP Metrics



I also got an ESFP in another site. It is all fun.

Friday, January 31, 2020

Configuring Kheops with Keycloak

This post discusses how to install Kheops and Keycloak in 2 Centos 7 VMs.

First, install docker and docker-compose in both VMs.

You may also need to add the user to docker group

$ sudo usermod -aG docker $USER

and either log out and log in again (or restart, in case of a VM).

VM1:

Install Keycloak with Docker, together with a user account

First, create a fullchain.pem and privkey.pem from Letsencrypt.



Step 1: Keys!

Two options.

Option 1: Copy and rename the crt and key

$ cp keys-keycloak/fullchain.pem https/tls.crt

$ cp keys-keycloak/privkey.pem https/tls.key


Option 2: Create the crt and key with OpenSSL.

Alternatively, the crt and key can be created as below.

$ openssl x509 -outform der -in fullchain.pem -out tls.crt

$ openssl rsa -in privkey.pem -out tls.key

Move the tls.crt and tls.key to a separate folder (https) and cd to that directory.


Step 2. Set the permissions for the keys


$ cd https


$ chmod 700 .

$ chmod 600 tls.key

$ chmod 644 tls.crt



Step 3. Run the Keycloak container



$ docker run -d -p 443:8443 -e KEYCLOAK_USER=pradeeban -e KEYCLOAK_PASSWORD=password -v /home/pradeeban/https:/etc/x509/https --name kc jboss/keycloak

 
Keycloak will use port 443/https.

Now go to https://HOSTNAME

Log in with the user name and password you specified before.

Step 4. Now to configure a log in connect for Kheops

First create a new realm with the name, "demo".

1. Keycloak KHEOPS Login Client

Click the "Clients" tab, and choose the "Create" option.

Client ID = loginConnect

Click "Save", which will then open more configurations for the "LoginConnect" that you just created.

Turn on the option "Implicit Flow Enabled"

Turn off the "Direct Access Grants Enabled"

Valid Redirect URIs: https://KHEOPS-HOME/*

(for example: https://dbmi.virtualpacs.org/*)

Web origin: https://KHEOPS-HOME

(for example: https://dbmi.virtualpacs.org)


Click "Save" again.


2. Client Scope (kheops)

Click the "Client Scopes" tab, and choose the "Create" option.

Name: kheops

Turn off the "Display On Consent Screen"

Click "Save"


Click "Clients" again and go to "LoginConnect"

Go to the "Client Scopes" tab.

Choose "kheops" from the Available Client Scopes and choose the "Add selected" option. Remove all the other options from the Assigned Default Client Scopes as well as Assigned Default Client Scopes.

Add the email and full name token mappers to the kheops Client Scope by clicking on the Add Builtin button.

3. Service Account

Create another client "kheopsAuthorization".

Save, and then disable "Standard Flow Enabled" and "Direct Access Grants Enabled".

Change "Access Type" to "Confidential". and save.

Change "Service Accounts Enabled" to "On" and save.

The Service Account’s credentials (secret) can be found under the Credentials tab.

Choose the "KheopsAuthorization" Scope mappings. Under the "scope", disable "Full Scope Allowed" option. Choose "realm-management" as the "Client Roles", and add "view-users" option.

Now, repeat the above step for "Service Account".

The Service Account’s credentials (secret) can be found under the Credentials tab. Copy it to replace the default secret provided in kheopsDocker/kheops/secrets/kheops_keycloak_clientsecret, or provide it as the secret when prompted during the Kheops configuration.



4. Logging Impersonations

Under the "LoginConnect" client's Mappers tab, click "Add Bulletin", and add the Impersonator User ID."

Change the "Token Claim Name" to "act.sub". Then disable "Add to ID token" option.

Finally, click "Save". This is supposed to conclude the configurations unless I missed something.



Export your realm for later use from the host:

$ docker exec -it kc /opt/jboss/keycloak/bin/standalone.sh -Dkeycloak.migration.action=export -Dkeycloak.migration.provider=singleFile  -Djboss.http.port=8888 -Djboss.https.port=9999 -Djboss.management.http.port=7777 -Dkeycloak.migration.file=kkconf.json
 

Copy the file to the host machine, from the Docker container.

$ docker cp kc:/kkconf.json .

At the time of writing, Keycloak documentation had some issues that are fixed in the above command. 
 
Then next time, you can easily import this realm, rather than configuring everything from scratch:
 
$ docker run -e KEYCLOAK_USER=USERNAME -e KEYCLOAK_PASSWORD=PASSWORD \
    -e KEYCLOAK_IMPORT=/tmp/example-realm.json -v /tmp/example-realm.json:/tmp/example-realm.json jboss/keycloak 
 
 

 
 

Step 5: Configure Kheops

VM2:

Run Kheops with Docker


$ git clone https://github.com/OsiriX-Foundation/kheopsDocker.git

$ cd kheopsDocker

$ git checkout install-secure

$ sh kheopsinstall.sh            [See footnote at the end of this post].


Follow the prompts.

Enter the secret: Enter the secret copied from Keycloak in the previous step.

What is the Keycloak host ? (ex: https://keycloak.kheops.online) https://keycloak.virtualpacs.org

What is the Keycloak realm ? demo

What is your hostname ? (ex: demo.kheops.online) dbmi.virtualpacs.org


Add your public and private key in the directory kheops/secrets (fullchain1.pem / privkey1.pem)

$ cp keys-kheops/fullchain.pem kheopsDocker/kheops/secrets/fullchain1.pem

$ cp keys-kheops/privkey.pem kheopsDocker/kheops/secrets/privkey1.pem

Press enter to start KHEOPS

Now, access Kheops from https://dbmi.virtualpacs.org



To enable registrations of new users for Kheops, go to Realm Settings -> Login tab in your Keycloak instance and turn on User registration. If you do not want to allow anyone to create an account, you may instead click on Users -> Add user to manually create users.

Feb 19, 2020: As of today, there is a minor tweak needed for this to get working.

In the .env file, set:
KHEOPS_REVERSE_PROXY_IMAGE_TAG=v0.9.0-contentsecurity-fix
before running the kheopsinstall.sh.

Monday, January 27, 2020

Configuring Keycloak for Kheops


Please follow the next blog post on this topic instead. This post is outdated.


This post discusses how to install Kheops and Keycloak in Centos 8.

First, install docker and docker-compose.

You may also need to add the user to docker group

$ sudo usermod -aG docker $USER

and either log out and log in again (or restart, in case of a VM).


Install Keycloak with Docker, together with a user account

$ docker run -e KEYCLOAK_USER= -e KEYCLOAK_PASSWORD= jboss/keycloak
 

$ docker run -p 8081:8080 -p 9443:8443 -e KEYCLOAK_USER=pradeeban -e KEYCLOAK_PASSWORD=password jboss/keycloak

Now go to http://localhost:8081

Log in with the user name and password you specified before.

Now to configure a log in connect for Kheops


1. Keycloak KHEOPS Login Client

Click the "Clients" tab, and choose the "Create" option.

Client ID = loginConnect

Click "Save", which will then open more configurations for the "LoginConnect" that you just created.

Turn on the option "Implicit Flow Enabled"

Turn off the "Direct Access Grants Enabled"

Valid Redirect URIs: http://localhost:8081/*

Web origin: http://localhost:8081

Click "Save" again.


2. Client Scope (kheops)

Click the "Client Scopes" tab, and choose the "Create" option.

Name: kheops

Turn off the "Display On Consent Screen"

Click "Save"


Click "Clients" again and go to "LoginConnect"

Go to the "Client Scopes" tab.

Choose "kheops" from the Available Client Scopes and choose the "Add selected" option. Remove all the other options from the Assigned Default Client Scopes as well as Assigned Default Client Scopes.


Add the email and full name token mappers to the kheops Client Scope by clicking on the Add Builtin button.

3. Service Account

Create another client "kheopsAuthorization".

Save, and then disable "Standard Flow Enabled" and "Direct Access Grants Enabled".

Change "Access Type" to "Confidential". and save.

Change "Service Accounts Enabled" to "On" and save.

The Service Account’s credentials (secret) can be found under the Credentials tab.

Choose the "KheopsAuthorization" Scope mappings. Under the "scope", disable "Full Scope Allowed" option. Choose "master-realm" as the "Client Roles", and add "view-users" option.

Now, repeat the above step for "Service Account".

The Service Account’s credentials (secret) can be found under the Credentials tab. Copy it to replace the default secret provided in kheopsDocker/kheops/secrets/kheops_keycloak_clientsecret.



4. Logging Impersonations

Under the "LoginConnect" client's Mappers tab, click "Add Bulletin", and add the Impersonator User ID."

Change the "Token Claim Name" to "act.sub". Then disable "Add to ID token" option.

Finally, click "Save". This is supposed to conclude the configurations unless I missed something.



Run OHIF Viewer with Docker


$ docker run -p 3000:80 -p 3443:443 ohif/viewer:latest

Confirm that OHIF Viewer is running fine, by going to localhost:3000 in your browser.


Run Kheops with Docker


$ git clone git@github.com:OsiriX-Foundation/kheopsDocker.git

$ cd kheopsDocker/kheops

Change the property values of docker-compose.env as shown below.


KHEOPS_KEYCLOAK_CLIENTID=kheopsAuthorization

KHEOPS_KEYCLOAK_URI=https://localhost:9443

KHEOPS_KEYCLOAK_REALMS=demo


KHEOPS_VIEWER_URL=http://localhost:3000

Save and exit.

Start the Kheops containers.

$ cd ..

$ sh script_run_docker.sh

Now go to http://localhost:8042 from your favorite browser to access Kheops.

 $ docker ps
CONTAINER ID        IMAGE                                              COMMAND                  CREATED             STATUS              PORTS                                                                                                                                              NAMES
c340d0e1f214        osirixfoundation/kheops-reverse-proxy:ci-test      "./etc/nginx/conf.d/…"   About an hour ago   Up About an hour    0.0.0.0:80->80/tcp, 0.0.0.0:443->443/tcp, 0.0.0.0:8042->8042/tcp, 0.0.0.0:8048->8048/tcp                                                           kheopsreverseproxy
0f9a44db1bfb        osirixfoundation/kheops-dicomweb-proxy:master      "./replaceSecretsAnd…"   About an hour ago   Up About an hour    0.0.0.0:8049->8080/tcp                                                                                                                             kheopsdicomwebproxy
0416a8badd18        osirixfoundation/kheops-ui:master                  "./docker-entrypoint…"   About an hour ago   Up About an hour    80/tcp, 3000/tcp                                                                                                                                   kheopsui
38a3b77ca2a2        osirixfoundation/kheops-authorization:dev          "./replaceSecretsAnd…"   About an hour ago   Up About an hour    8080/tcp                                                                                                                                           kheopsauthorization
2e2f7e7282bd        osirixfoundation/kheops-zipper:master              "./replaceSecretsAnd…"   About an hour ago   Up About an hour    8080/tcp                                                                                                                                           kheopszipper
3908f545ff49        osirixfoundation/pacs-authorization-proxy:master   "/bin/sh -c '. $NGIN…"   About an hour ago   Up About an hour    0.0.0.0:82->80/tcp                                                                                                                                 pacsauthorizationproxy
88cf4203c434        osirixfoundation/kheops-dcm4chee-arc-psql:latest   "/script_entrypoint.…"   About an hour ago   Up About an hour    0.0.0.0:2575->2575/tcp, 0.0.0.0:8080->8080/tcp, 0.0.0.0:8443->8443/tcp, 0.0.0.0:8787->8787/tcp, 0.0.0.0:9990->9990/tcp, 0.0.0.0:11112->11112/tcp   pacsarc
b4147f1c4244        osirixfoundation/kheops-database:demo              "verify-secret-env-v…"   About an hour ago   Up About an hour    5432/tcp                                                                                                                                           db
7edb16bc1868        dcm4che/slapd-dcm4chee:2.4.44-15.0                 "/docker-entrypoint.…"   About an hour ago   Up About an hour    389/tcp                                                                                                                                            pacsldap
d5290c892e16        jboss/keycloak                                     "/opt/jboss/tools/do…"   About an hour ago   Up About an hour    0.0.0.0:9443 -> 8443/tcp, 0.0.0.0:8081->8080/tcp                                                                                                                   jovial_varahamihira
279bf6a09ce0        ohif/viewer:latest                                 "/usr/src/entrypoint…"   About an hour ago   Up About an hour    0.0.0.0:3000->80/tcp, 0.0.0.0:3443->443/tcp                                                                                                        dreamy_hawking