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Questions tagged [disaster-recovery]

This tag should only be used for **programming questions** that relate to the recovery of data or services in the event of a disaster situation. Non-programming questions are OFF-TOPIC.

This tag should only be used for programming questions that relate to the recovery of data in the event of a disaster situation.

Any non-programming disaster recovery questions are not on-topic, and may be more appropriate on Server Fault.

277 questions
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Recover zookeeper cluster from part of it's nodes

Here is the situation. I got 6 zk nodes, namely 1,2,3,4,5,6, in two different region, namely A(1,2,3), B(4,5,6), separately. Now A goes down, and we want to recover the cluster from B. Which one of the two plan is practicable? Do we have to add (or…
AndyChow
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Accidently removed postgres default superuser privileges - can I get it back?

From inside Webmin I accidently unmarked the checkbox "Can create databases?" and "Can create users?" Stupid, I know. But since it takes a user with superuser privileges to edit/create a user, is there a way to fix this from the linux terminal? I…
Dac0d3r
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AWS Account-to-Account Backup Solution for EC2 and RDS?

Desired Result: After hearing many horror stories of malicious users gaining access to AWS accounts and wiping out resources, I'm interested in creating a system that can copy RDS Snapshots and EC2 AMIs/Volumes to a completely separate AWS account…
HeavyObjectLifter
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How to create a redundant instance of Solr

I need to build out a fully redundant and resilient Solr search platform where search data is replicated between data centers. Does Solr cluster provide any vehicle for this inter-datacenter replication to occur? If not in the engine, if I was to…
QWade
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Restore deleted file directly from Eclipse local history

Some git mistakes happened and I lost a lot of changes for one file. I was using Eclipse as my IDE but the git mishap included deleting the project and re cloning the directory. So I can't do the restore from within Eclipse. I believe I have…
postelrich
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TFS 2010 restored database, TfsJobAgent cannot connect to database

I have a Team Foundation Server 2010 setup, in which I have TFS on one server and the databases on another. Recently the server with the databases completely crashed and I had to replace it. I restored the databases from backups, and changed the…
sovemp
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What happens when you restore system databases to a SQL Server with a different name?

I'm currently looking at disaster recovery plans and restoring backups of master/msdb/model. In theory if I restore master, msdb, model and the user databases onto a fresh server install (with the same service packs etc) then I will have an exact…
codeulike
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Creating a multi-region active-passive DR plan for Aurora MySQL?

I'm trying to create a disaster recovery plan for a cost efficient, maintainable and with little down for Aurora MySQL. I want two read/write databases in two different regions, they can be separate databases called primary-us-east-1 and…
CKT
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Minimizing failure without impacting recovery when building processes on top of Kafka

I am working with a microservice that consumes messages from Kafka. It does some processing on the message and then inserts the result in a database. Only then am I acknowledging the message with Kafka. It is required that I keep data loss to an…
Zeruno
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Processing writes during DR in Active Passive Open Search Setup

Understanding Active Passive Cross Cluster replication for AWS Open Search[1] is pretty straightforward. You have a leader index in the active cluster that replicates everything to the follower index in the passive cluster. In case there is a DR and…
arjunkhera
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AWS RDS bidirectional replication

I'm researching about AWS RDS bidirectional replication. I know that RDS has the read replica, but I need the bidirectional replication for disaster recovery. Would anyone have the experience with this before? I'm very appreciated for your help.
スーパーマン
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is node.js a one process server?

is node.js a one process server, or can it emulate Apache bunch of child processes, each serves a different request, and each is independent from the other (and the cycling of child processes to avoid long term memory leaks). Is it at all needed…
Itay Moav -Malimovka
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chain of events analysis and reasoning

My boss said logs in current state are not acceptable for the customer. If there is a fault, a dozen of different modules of the device report their own errors and they all land in logs. The original reason of the fault may be buried somewhere in…
SF.
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Disaster Recovery options on AWS

We are running on aws where we run everything in 1 region and use AZ's for our services. So if a AZ failed we would still be "up" and servicing our customers. From reading the Reliability Pillar of the AWS Well-Architected documentation, this would…
Noel
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Configure disaster recovery and automatic failover for Azure SQL Database?

We have our Azure Sql database provisioned in East US and our hot-stand by region is West US. I know that Azure Sql database supports Geo-Replication and failover groups. How do I configure the Azure Sql database to support the disaster recovery…
One Developer
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