Hi All!

I asked previously about the DR server in the cloud but actually, I'm curious about the backup server to use as analytics server more than for recovery in DR case.

There is a recommended practice to use an async mirror as a server for BI (InterSystems Analytics, DeepSee)

The question is if I have PRIMARY in the cloud (AWS, Google, Azure, etc) "how far" should async mirror member be placed? Same cloud, same private cloud or it doesn't matter at all for analytics purposes?

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Hi Community!

Please find the Developer Community Video of the week:

Failover for Cloud and Wide-Area Networks

https://www.youtube.com/embed/da-UegJsjO4
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Hi, Community!

Check a new session recording from Global Summit 2017:

Mirror, Mirror, Which Should I Choose?

https://www.youtube.com/embed/NmMfE14RdDs
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Hi All,

When I log into Backup mirror member it becomes too slow to load and navigate, I tried to check message log and I saw the error message about Database mirror latency and database disk issue which when I check it looks fine to me. Please have a look at the below screenshots and advise what the issue could be.

When I run df -h through SSH :

200G is the volume size, 194G is used space, 6.5G is available space and 97% IS %Use

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Hi:
The task Mirror Monitor Launch Task recently failed and is placed in Suspend leave. Although it says USER it is not known as a task for us.

The code runs is HSSYS which is not our main system or namespace for production items.

The task name is HS.Util.Mirror.Task runs

If $system.Mirror.IsMember() Do ##class(HS.Util.MirrorMonitorAgent).StartAgent() and just says the description

/// This is the task definition that Launches the mirror monitor on any mirrored instance

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Presenter: Ray Fucillo
Task: Provide high availability (HA) and disaster recovery (DR) in diverse architectures that demand high performance, including replication over long distances
Approach: Give examples of mirror architectures in disparate environments, including geographically separated systems. Discuss performance considerations and advances in InterSystems’ mirroring technology

In this session you will learn about deploying Mirroring to provide HA and DR in diverse architectures that demand high performance and throughput. Challenges and solutions to achieving high throughput will be covered along with mirror architectures that involve long distances and disparate environments.

Content related to this session, including slides, video and additional learning content can be found here.

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InterSystems has corrected a defect that can result in data integrity problems in environments that use InterSystems mirroring in conjunction with parallel dejournaling. This problem exists for currently released Caché and Ensemble versions beginning with 2017.2 and for InterSystems IRIS Data Platform version 2018.1.

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I've setup ODBC connection so I can access Cache data within SQL Server.

I want to be able to write SQL queries for internal monitoring purposes, similar to what's possible with SQL Server. Specifically I want to be able to check mirroring status (i.e. check which is the current primary mirror member), check the status of any Ensemble productions (started/stopped), check the status of business hosts etc. I want to do all of this from SQL Server to go with our other system monitoring solutions.

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Question
· Mar 7, 2023
Questions about using ZSTOP

I am working on setting up our Failover techniques as we move to a Mirror Environment with a Arbiter, 2 Failover Nodes, and a Async (DR) Node. There are some system commands that I would like to call when the Mirror moves, and I am working on a ZMIRROR routine for that, but I also wanted to create an additional step if we wanted to manually shutdown and for the Mirror to move. So I was looking at using ZSTOP to call a couple of different items while shutting down, while the documentation has an example a couple of questions come to mind about using ZSTOP.

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Question
· Dec 5, 2018
Schema not appearing on Mirror

Hi, I updated the schema on our live node, but the change did not occur on the mirror server. Is there some setting that I need to enable? Everything else seems to be updating but the schema has not

Can you advice on what I could be missing or is this something that is known?

Regards,

Eric

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As an IT and cloud team manager with 18 years of experience with InterSystems technologies, I recently led our team in the transformation of our traditional on-premises ERP system to a cloud-based solution. We embarked on deploying InterSystems IRIS within a Kubernetes environment on AWS EKS, aiming to achieve a scalable, performant, and secure system. Central to this endeavor was the utilization of the AWS Application Load Balancer (ALB) as our ingress controller.

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In Episode 5 of Data Points, @Bob.Binstock9141 joins us to talk about mirroring databases for high availability in InterSystems products! Most of the discussion centers around this process in InterSystems IRIS, with a few notes about the differences when tackling it in HealthShare. Take a listen and let us know your thoughts!

https://5e18edf067eb59-03854285.castos.com/player/159215
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Hi Community!

Please find the Developer Community video of the week on the InterSystems Developers YouTube Channel:

Upgrades - Minimizing Business Disruption

https://www.youtube.com/embed/CrY-vPVcJdM
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Hello everyone!
Maybe someone will tell me what could be the reason for such messages in the message.log file

05/03/23-06:46:27:155 (6584) 0 [Utility.Event] [SYSTEM MONITOR] Mirror state: Member type = Failover, Status = Transition
05/03/23-06:46:27:350 (1620) 1 [Utility.Event] Failed InstanceLookup (agent probably not running): instance not found
05/03/23-06:46:27:351 (1620) 2 [Utility.Event] Failed to become either Primary or Backup at startup

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I am new to setting up a mirror environment....

We will have a Arbiter, Two Failover members (A,B), and a Async (DR) member (C). I have the two failover members in sync and are configured for Arbiter Control.

My question is about the Async member, when I initially set it up I pointed it to the mirror on the primary node A.

Is that correct?

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In the context of IKO (Iris Kubernetes Operator) the question of Service not redirecting dynamically to the correct Pod is still pending.
In production this can be dangerous since an overload (or any other simpler problem) can cause you to change the main Pod and leave the application inoperable until we intervene.

Intersystems support warned that this is still an issue of IKO, but there are some possibilities that I am studying.

To explore an idea I had, I would like the help of this Forum to answer the following question:

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When I create a TASK on the Primary mirror member and Try to create the same TASK in the backup mirror member, It Gives me CSP Application error.

The TASK gets created in the Primary node without any errors and When creating in the Backup node it prompts the error.

It happens is IRIS and I didn't face this in CACHE.

Finally what I did is export the TASK in Primary and Imported in Backup.

Is this a feature of IRIS?

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Hi

This morning I noticed that the ISCAgent.log for one of my high availabilty healthconnect servers has many entries that say:

"Mirror remote control command requested access to instance directory not found in registry."
Requested:d:\intersystems\healthconnect\

In addition, Messages.log has many of the following entries:

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Hi Community!

New video is already on InterSystems Developers YouTube Channel:

Making Cloud Deployments Cost Effective

https://www.youtube.com/embed/ufX2GgdBIug
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