Good day!
Is there an opportunity to debug the ISCAgent behaviour (in Linux)? ISCAgent uses /etc/iscagent/iscagent.conf as configuration file, but in docs I've found a description only for two parameters (port number and interface - http://docs.intersystems.com/latest/csp/docbook/DocBook.UI.Page.cls?KEY=...). Other parameters I can see by running /usr/local/etc/cachesys/ISCAgentCtrl status:
If you're running IRIS in a mirrored configuration for HA in AWS, the question of providing a Mirror VIP (Virtual IP) becomes relevant. Virtual IP offers a way for downstream systems to interact with IRIS using one IP address. Even when a failover happens, downstream systems can reconnect to the same IP address and continue working.
I have a DR member and in this cache server the database "cachetemp" start to getting bigger without any reason (50GB that was all the free disk space we have)
In the members of the mirrors the cachetemp its ok and the size is 31MB.
I restarted the server because I read that the cachetemp database purge when restarting, but didnt happend.
Any recommendation to clean this database? can I just deleate the CACHE.DAT from this database?
Hi, would really appreciate your advice on how I can restart the mirror-monitor. I've followed the instructions and restarted the mirror monitor, and still the status seems to be down. Can you point me to some resource or steps that I can follow ?
I logged into %SYS terminal and restarted the mirror monitor and it says that it is running
Is there a way to force a failover from the primary mirror member to the backup member without forcing down the primary (which happens with ##class(SYS.Mirror).BecomePrimary())? What I'm trying to simulate is a network isolated condition on the primary.
Most CloudFormation articles are Linux-based (no wonder), but there seems to be a demand for automation for Windows as well. Based on this original article by Anton, I implemented an example of deploying a mirror cluster to Windows servers using CloudFormation.I also added a simple walk through.
The complete source code can be found here.
Update: 2021 March 1 I added a way to connect to Windows shell by public key authentication via a bastion host as a one-liner.
I work on deploying IRIS inside Docker container. I really like %Installer class can automate many steps. I want to establish an ECP connection to a mirror database and then define a remote database on the application server. I have already seen we can create local database and namespace in %Installer. What code is needed to establish ECP connection?
I'm trying to add a DR async member to a mirror but when I add this member I get this messages in the mirror monitor (on the DR member):
The message im talking about is the "missing Mirrored Databases report".
The only step I did was the " System Administration -> Configuration -> Mirror Settings -> Join as Async" an fill the blanks. Maybe Im skipping a step?
I have Ensemble/Healthshare running in a production environment which is setup with a mirror failover and an arbiter sitting between them.
In the event of a failover we have a number of connections that need stopping/monitoring and starting in a certain order.
Is there a programmatic way we can detect the failover and stop certain services and operations immediately and then start them up again in the required order, checking their connection state before starting the next connection.
Is it possible to make the cache terminal available over a mirrored vip address for a healthshare mirrored environment? So that connecting to a terminal for a mirrored environment will always connect to the Live Node?
I'm looking to write a Powershell script to run against the system and need to connect to the Live Node in a mirrored setup. Is this possible or am I going to have to log onto each node to establish which is Live. Or does this even matter?
I have a DR Mirror with a WIJ that is 5 times as large as the Primary Failover member. My Read-Write Reporting mirror WIJs are the same size as the Primary. I don't know why the DR WIJ i so large and would like to shrink it to the same size as the others. Any suggestions are welcome. Thanks!
I'm looking for some field experiences, lessons learned, or actual deployed solutions to the problem of replicating non-CACHE.DAT data in a mirrored Cache environment.
I want to know if there is a way to manually change Primary to secondary and vice versa?
I need this becasue we backup the two VMs (primary and secondary) and my idea is to make a script to when the primary VM is going to backup with Veeam change to "backup" on the mirror.
Presenter: Mark Bolinsky Task: Provide failover for distributed systems without using a VIP Approach: Demonstrate using InterSystems’ database mirroring with external traffic managers such as F5 LTM/GTM
With distributed environments and even public cloud environments, the use of a VIP sometimes is not desirable or even possible given network topology or deployment. The session will demonstrate integrating database mirroring with external traffic managers such F5 LTM/GTM using API based triggers in InterSystems products to interface with the F5 appliances. This not only presents automated redirection for the local mirror members, but also provided automated client redirection to asynchronous DR mirror members.
Content related to this session, including slides, video and additional learning content can be found here.
I've created a scheduled task that dumps HL7 messages to flat files. It uses the OutputToLibraryStream() method of EnsLib.HL7.Message. I'd like to be able to run it on a mirror member host whether it's primary or backup.
When run against a database that's mounted read-only, it works fine. However, when I attempt to run it against a mirror backup database, I get the following error:
Initially when setting up a cache instance one creates or imports the user/ resources roles etc .
After the Mirror has been activated you can add users, resources etc. But when trying to add new SQL Table privileges to a namespace where the databases are mirrored it seems that you are not able to , Getting error:
Looking through Mirroring routines sources, I've noticed these terms, while even the latest documentation keeps silence on them. I'm just curious what are they, and how to configure / to use them?
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?
Our mirrored HealthShare environment has failed over a few times recently due to underlying infrastructure issues (that are being worked on and resolved).
In the HealthShare logs we are seeing:
10/06/22-00:54:35:925 (4736) 1 Journal Daemon has been inactive with I/O pending for 10 seconds: gjrnoff=524741316,iocomplete=523852600,filecnt=1011,fail=0 10/06/22-00:54:55:086 (4736) 3 CP: Pausing users because Journal Daemon has not shown signs of activity for 30 seconds. Users will resume if Journal Daemon is active again
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