#Docker

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Docker is a software technology providing containers, promoted by the company Docker, Inc. Docker provides an additional layer of abstraction and automation of operating-system-level virtualization on Windows and Linux.

Trying to make some scripts to do some IRIS initialization during startup, I noticed that iris start and particularly stop takes too much time, and it starts to many processes in the background.

nostu is mostly useless for system initialization but could help in some scenarios, such as setup passwords, but it is still too slow

irisowner@4ea1bfb50b7f:~$ time iris start iris nostu
Starting IRIS
Using 'iris.cpf' configuration file

Starting Control Process
Global buffer setting requires attention.  Auto-selected 25% of total memory.
Allocated 7417MB shared memory
6002MB global buffers, 600MB routine buffers
Creating a WIJ file to hold 99 megabytes of data
InterSystems IRIS is started in single user mode.
To log into InterSystems IRIS, type:
    iris session IRIS -B

real    0m0.513s
user    0m0.090s
sys     0m0.207s

For instance, I have no idea why it starts so many AUX processes, even during NOSTU. With a normal start with no extra volumes attached, just plain start, I see no reasons to have so many AUX processes as well.

2011 pts/0    S      0:00 /usr/irissys/bin/irisdb -s/usr/irissys/mgr/ -w/usr/irissys/mgr/ -cc -B -Enostu -C/usr/irissys/iris.cpf*IRIS
 2052 pts/0    S      0:00 /usr/irissys/bin/irisdb WD                                                                                 
 2053 pts/0    S      0:00 /usr/irissys/bin/irisdb GC                                                                                 
 2054 pts/0    S      0:00 /usr/irissys/bin/irisdb JD                                                                                 
 2055 pts/0    S      0:00 /usr/irissys/bin/irisdb AUX2                                                                               
 2056 pts/0    S      0:00 /usr/irissys/bin/irisdb AUX1                                                                               
 2057 pts/0    S      0:00 /usr/irissys/bin/irisdb AUX5                                                                               
 2058 pts/0    S      0:00 /usr/irissys/bin/irisdb AUX7                                                                               
 2059 pts/0    S      0:00 /usr/irissys/bin/irisdb AUX4                                                                               
 2060 pts/0    S      0:00 /usr/irissys/bin/irisdb AUX3                                                                               
 2061 pts/0    S      0:00 /usr/irissys/bin/irisdb AUX6                                                                               
 2062 pts/0    S      0:00 /usr/irissys/bin/irisdb DBXD

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Is anyone like me, and felt really jealous that they didn't have enough points to acquire the IRIS-based Raspberry Pi system when it was offered? Do you have a spare Raspberry Pi 4 handy? If so, I'll walk you through setting up Docker and IRIS on your Raspberry Pi so you can have the smallest IRIS computer in town!

Things you'll need:

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Hi Developers,

Often we create and edit InterSystems IRIS Interoperability solutions via a set of UI tools that is provided with IRIS. But it is sometimes difficult to setup the development environment to handle changes we make in the UI to source control.

This video illustrates how git-source-control helps with source control Interoperability components while changing it in the UI.

⏯ Git Source Control for InterSystems IRIS Interoperability with Docker and VSCode

https://www.youtube.com/embed/QIb2ksEXdHk?controls=0
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Hey Community,

Tired of entering login-password during the docker build with your InterSystems IRIS every time?

There is a handy way to turn it on and off – use the passwordless zpm module.

Watch this video to explore how to use the passwordless ipm module to turn on and off entering login-password during docker build with your InterSystems IRIS:

⏯️ Passwordless mode for development with InterSystems IRIS

https://www.youtube.com/embed/ygIJsTMO0Gw?controls=0
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To prepare a migration to IRIS I use Docker images.
The (aged) application is built around Caché Terminal
And on Windows, IRIS uses the same ctelnetd.exe as Caché.

In my Docker installation, Telnet Settings are just grayed out in SMP.
and my Terminal can't 'connect.
Port mapping is OK and verified with TCP

Working from the console in Docker with the whole set of ESC and
screen formatting is not acceptable.
We tried WebTerminal but there is just no Partition behind as in Terminal.

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Hi Developers,

Enjoy watching the new video on InterSystems Developers YouTube:

⏯ Real-World CI/CD: Keep Calm & Build On @ Global Summit 2022

https://www.youtube.com/embed/EcaJETVJ6eg
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Dear community members!

A very common problem of our users is to use an external database as data source in an IRIS production. As many of you already know, we have two ways to connect directly to an external database, the first one is using an ODBC connection, the second is using JDBC.

In our example we are going to create a connection using JDBC, and we are going to build a simple Docker's project, in this way you will be able to modify the example as you wish.

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Hi Developers!

Suppose you have a persistent class with data and you want to have a simple Angular UI for it to view the data and make CRUD operations.

Recently @Alberto Fuentes described how to build Angular UI for your InterSystems IRIS application using RESTForms2.

In this article, I want to tell you how you can get a simple Angular UI to CRUD and view your InterSystems IRIS class data automatically in less than 5 minutes.

Let's go!

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Hi Developers!

"objectscript.conn" :{
      "ns": "IRISAPP",
      "active": true,
      "docker-compose": {
        "service": "iris",
        "internalPort": 52773
      }

I want to share with you a nice new feature I came across in a new 0.8 release of VSCode ObjectScript plugin by @Dmitry Maslennikov and CaretDev.

The release comes with a new configuration setting "docker-compose" which solves the issue with ports you need to set up to make your VSCode Editor connect to IRIS. It was not very convenient if you had more than one docker container with IRIS running on the same machine. Now, this is solved!

Read below how it works now.

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Hi, I would like to tell you how easy it is to spin up IRIS for Health docker container in compute engine(VPS) in google cloud.

I know that to run IRIS for Health in AWS is pretty simple and straightforward, but I wanted to tried if its same easy in GCP environment.

Create vm instance. 2GB RAM is more than enough.

I used Debian 11 as Linux distro.

Standart persistent disk is cheaper.

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Article
· Nov 18, 2022 1m read
Jupyter and IRIS - The Simple Version

There are several great articles in the community showing how to use Jupyter and InterSystems IRIS together, and I encourage you to check them out in the link at the end of this article for more in depth understanding.

This is just another one, the difference is on the simplicity. Do you want to just start a container where Jupyter is already connected to an IRIS instance? Then this is for you!

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Hi developers!

Those who code IRIS solutions in VSCode using Docker often use the convenient ObjectScript menu, which contains links to Management Portal, Class Reference, Unittest portal, Productions, etc.

While drilling down to a Dev Container to code Embedded Python there is no such option, at least within my settings:

So I don't know how to connect to it.

Thoughts?

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I have installed Iris in Docker container with the above version. I need to create an additional user to log in via ssh. I have created a user and put in both the irisuser and irisowner groups, and created a user in iris with permissions. But, when I run "iris session iris" I originally got an error about permissions: /usr/irissys/bin/irisdb: Permission denied.

I looked @ the /usr/irisys directory and the permissions was only (r-x------). I changed to (dr-xr-xr-x.)and now I get a different error:

Invalid ownership for ./irisdb

Any suggestions?

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Docker 20.10.14 (released March 23, 2022) changes the Linux capabilities given to containers in a manner that is incompatible with the Linux capability checker in InterSystems IRIS 2021.1 (and up) containers.

Users running Docker 20.10.14 on Linux will find that IRIS 2021.1+ containers will fail to start and the logs will incorrectly report that required Linux capabilities are missing. For example:

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Hi folks!

We have a bunch of templates on OEX that provide a handy foundation for building a particular application with IRIS. And the basic principle of each and every template is that we take vanilla IRIS images, load code, and files into the image using Dockerfile, and create a new docker image as a solution. And then we develop running this image and rebuilding it when returning to development.

Some developers ask me why we need to build the docker image to work with the code. Indeed, if at the end of the day I need to develop a ZPM package and not a docker image why don't run the vanilla image and load the code and everything in it?

The problem I have with the building image approach is that often I can wait a lot to build an image and it fails on some Objectscript problem in the source that I cannot fix as the image is not building. and

Any thoughts? How do you develop with docker?

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Discussion
· Sep 22, 2022
Testing MergeCPF feature

For quite some time InterSystems IRIS supports such thing as Merging CPF. So, with help of this it should be possible to define only desired changes in configuration. And get them applied even with vanilla Docker image.

And I though it could be useful when used with Dockerfile. Use this way to configure IRIS during docker build instead of using Installer manifest.

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