Listened to the "#Mainframe Myths Debunked! - with Jennifer Velasquez and Kirk Chadrick" episode of #IBMZ DevOps Talks today while on the train, and they talked about languages, git, developer environments and more! Lots of good stuff packed in a small podcast!

I think I enjoyed the "#COBOL is easy" bits the most. I keep saying this and people don't believe me 😅 Kids these days have it... harder! It's way different, but concept-wise it's quite straight forward.

https://open.spotify.com/episode/2qyYI9HwMAiqbe5ReW90uN

Great #TerminalTalk episode with Joe Bostian & Chad McIntyre about #Python 🐍 for #IBM z/OS!

It's been a fascinating journey to watch what it takes to get a properly running Python on a totally different operating system than most of us are familiar with.

https://www.terminaltalk.net/e/joe-bostian-and-chad-mcintyre-python-and-open-source-update/ #zOS #IBMZ

Don’t miss the opportunity to get up to date with Linux on IBM Z and LinuxONE.

2023 IBM TechXchange EMEA Client Workshop for Linux on IBM Z and LinuxONE on September 19-20 in Ehningen, Germany! Register here: https://www.ibm.com/events/reg/flow/ibm/3l63zfmb/landing/page/landing

#ibm #linux #ibmz #linuxone

Additionally, the #PostgreSQL community has integrated an s390x builder into their #Jenkins instance and is publishing #IBMZ binaries in their apt repository for #Debian & #Ubuntu 🥳 https://wiki.postgresql.org/wiki/Apt

The s390x open source team at IBM confirms the latest versions of software runs well on #Linux on #IBMZ. In July 2023 currency was maintained for 30 projects, including: #Alfresco, HashiCorp #Consul, & the #nginx Ingress Controller

Full report: https://ibm.biz/ibmz-oss-report-july-2023 #LinuxONE

To obtain kernel dumps of Linux on IBM® Z instances, you can use the tools described, for example, kdump or VMDUMP. You can use DASD, tape, or SCSI dump devices.

Find more details in the updated doc for RHEL 9.2
"Using the Dump Tools on Red Hat Enterprise Linux 9.2"

https://www.ibm.com/docs/en/linux-on-systems?topic=tools-red-hat-enterprise-linux-92

#ibm #linux #ibmz #LinuxONE #redhat #dump

Finally got to listen to the latest z/Action! podcast about unboxing the IBM z16 rack mount.

I've spent a lot of time in data centers, so this was a fun one for me. And it literally came with a blue bow 😁💙🎀

https://community.ibm.com/community/user/ibmz-and-linuxone/blogs/lee-sullivan1/2023/07/20/zaction-podcast #mainframe #IBMZ

As promised, I finally got that basic walk-through tutorial of setting up a #CircleCI Machine Runner for s390x running on a free of charge CircleCI account and IBM #LinuxONE Community Cloud instance published.

Enjoy! https://community.ibm.com/community/user/ibmz-and-linuxone/blogs/elizabeth-k-joseph1/2023/08/01/circleci-self-hosted-runner-for-linuxone-tutorial #IBMZ

The MainframerZ group recently had a meetup all about Open Source Software on #IBMZ!

I was able to sync up with event speaker Joe Winchester prior to this event, and so I manged to get a mention of our Open Mainframe Project Software Discovery Tool in his tour of the ecosystem! 🥳

You can now watch the whole thing (or skip around, you do you!) on YouTube: https://www.youtube.com/watch?v=DYbjnRfC3TY

In our rush to be excited about the fancy new "modernization" goodies on #Linux on #IBMZ, we sometimes forget the foundation that brought us here, and continue to shine, like z/OS, JCL, and CICS.

This article doesn't forget them, and gives a great primer to the uninitiated: https://arstechnica.com/information-technology/2023/07/the-ibm-mainframe-how-it-runs-and-why-it-survives #mainframe

@arstechnica The article is nice but there are several inaccuracies that make the system even better than explained. Some examples:
- Talking about parallel sysplex: "Up to 32 CPUs can be clustered in parallel to achieve near-linear speedup under load” → You can cluster up to 32 LPARs not CPUs. Each LPAR may have a different number of processors ranging up to 200.
Parallel syxplex works in a star schema to communicate systems. Data resides at one shared point for all LPARs in the sysplex. There’s no single point of failure despite that.
- It can also run Linux and other operative systems, not just z/OS.
- Telum is a helping unit, not the processor itself. The processor itself is not even remotely close to POWER. Processors in a mainframe are CISC not RISC as in POWER.
- The software stack is so oversimplified that it is a bit misleading. Java, Python, C, C++, Assembler, Node.js, PL/I, Bash, SH, Fortran, Pascal… are some of the languages that can be run on a mainframe alone or inside appplication servers.

For all the rest, it’s a good article to start understanding why it stands...

#mainframe #ibmz

The s390x open source team at IBM works to get the latest versions of open source software running for #Linux on #IBMZ and in June 2023 currency was maintained for 2 dozen projects, including #ApacheTomcat, #Gluster & #InfluxDB ! ✨

Full report at https://community.ibm.com/community/user/ibmz-and-linuxone/blogs/elizabeth-k-joseph1/2023/07/12/linuxone-open-source-report-june-2023 #LinuxONE

Last month I was super focused on the Open #Mainframe Project Summit CFP, but now I'm on to another, the CFP for IBM zDay!

As always (since our launch of the event in 2019), it's a virtual event, and free. The CFP is open through July 31st: https://community.ibm.com/community/user/ibmz-and-linuxone/blogs/mingmay-pang2/2023/06/29/ibm-zday-call-for-papers-submission-deadline

I'm one of the leads for the Sustainability track, but I'm part of the core team that takes a look at everything, so please, propose your best mainframe breakthroughs, tutorials, and creative ideas! #IBMzDay #IBMZ #LinuxONE

Don’t miss these technical enablement sessions focusing on Linux on IBM Z and LinuxONE!

>>> July 12, 11:00 AM - 12:00 PM EST

The value of Red Hat OpenShift Add-ons and middleware with IBM Z and IBM LinuxONE

Register here: https://ibm.webex.com/weblink/register/r906eee429945d0aeabb65467124b049e

>>> July 19, 11:00 AM - 12:00 PM EST

What's new in Cloud Infrastructure Center 1.2.0

Register here: https://ibm.webex.com/weblink/register/r28c1cbe20732c298fcaa4ba8d78d2b83

#ibm #ibmz #linux #redhat #OpenShift #LinuxONE

My summer crew for the Open #Mainframe Project Software Discovery Tool has been featured in the latest blog post about the mentorship program! It's a real pleasure to be working with Aashish and Prince, and there will be some exciting changes coming soon to the tool 👏
https://openmainframeproject.org/blog/open-mainframe-mentorship-summer-2023/ #OpenSourceSoftware #IBMZ #Linux

My friends from the content design team just published a new security video for Linux on IBM Z and IBM LinuxONE:

“TLS connections with Crypto Express”.

See how to generate a private key within a Crypto Express adapter of IBM Z and IBM LinuxONE.
Then learn how to configure your cryptographic stack to use this key for a Web server’s TLS operation.

https://mediacenter.ibm.com/media/1_zfvt4y6d

#security #ibm #linux #LinuxONE #ibmz #tls #crypto

Don’t miss the

2023 IBM TechXchange EMEA Client Workshop for Linux on IBM Z and LinuxONE
on September 19-20 in Ehningen, Germany!

Please register here: https://www.ibm.com/events/reg/flow/ibm/3l63zfmb/landing/page/landing

#ibm #ibmz #linux #LinuxONE

The s390x open source team at IBM works to get the latest versions of open source software running for #Linux on #IBMZ & #LinuxONE

In May 2023 currency was maintained for 38 projects! These included @etcdio @fluentd & #R (programming language)

Full report at https://community.ibm.com/community/user/ibmz-and-linuxone/blogs/elizabeth-k-joseph1/2023/06/22/linuxone-open-source-report-may-2023 ✨

When considering the total cost of your IT, don't forget the cost for downtime or outages :
https://itic-corp.com/category/itic-reports-surveys/

#tco #infrastructure #downtime #ibmz #LinuxONE

The Red Hat OpenShift Container Platform comes with a certain processor capacity demand to keep the system and the workloads up and running.

If you want to learn more, have a look at this document that explains how much steady state CPU demand can be expected, how different add-ons affect it, and what benefits customers receive in return:
https://www.ibm.com/docs/en/linuxonibm/pdf/lnz_Demystifying_the_steady_state_load_of_RHEL_OCP.pdf

#redhat #ocp #performance #ibm #ibmz #linux