high-availability Questions
3
Solved
Trying to create a "read only" intent connection string against SQL Server 2012 high availability Group, following this article, I am getting:
System.ArgumentException: Keyword not supported: 'a...
Wayzgoose asked 17/1, 2014 at 16:5
4
How to deploy apache airflow (formally known as airbnb's airflow) scheduler in high availability?
I am not asking about the backend DB or RabbitMQ that should obviously be deployed in high availab...
Webworm asked 19/9, 2016 at 11:27
5
Solved
I'm developing an application that works distributed, and I have a SQLite database that must be shared between distributed servers.
If I'm in serverA, and change sqlite row, this change must be in ...
Hark asked 16/4, 2013 at 9:2
2
Solved
As per the (verbose) topic, are there any advantages over using a Keepalived & HAProxy as an HA webserver loadbalancer vs a pure keepalived solution?
Truc asked 27/3, 2015 at 2:39
1
We have a production setup of our solution with 2 webservers, these two webservers are loadbalanced, and connects to the same database.
We utilize Octopus deploy, and perform a rolling deploy wher...
Cysto asked 14/6, 2019 at 8:12
0
I have a Blazor (server hosting model) app written in .NET 6 hosted on an on-premise VM Windows Server VM with IIS.
I already have 3 stages (test, staging, production), each as IIS WebSite with it'...
Machinate asked 30/11, 2021 at 14:41
2
Spring Boot version: 2.1.6.RELEASE
Spring Cloud Version: Greenwich.SR1
Objective is to set up two instances of Eureka Servers in a cluster and have all microservices registered to both, in order ...
Sybarite asked 26/12, 2019 at 14:25
1
Solved
Introduction
First of all, I've tried all recommendations from C# DNS-related SO threads and other internet articles - messing with ServicePointManager/ServicePoint settings, setting automatic requ...
Permissible asked 6/10, 2021 at 11:26
13
Solved
The command:
hdfs haadmin -getServiceState machine-98
Works only if you know the machine name. Is there any command like:
hdfs haadmin -getServiceState <nameservice>
which can tell you ...
Gemini asked 30/10, 2014 at 8:30
3
Solved
According to my reading on jboss documentation it says,
We define high availability as the ability for the system to continue
functioning after failure of one or more of the servers. A part of...
Tera asked 29/5, 2015 at 9:16
2
Solved
In CAP theorem, Redis is specified as a database which lacks availability (which has partition tolerance and consistency).
But there are many places where Redis is considered as a high availability...
Prieto asked 28/12, 2019 at 13:22
2
Solved
I will have an event with 3k users on an app (php base).
I launch several instances in the cloud and install LAMP on it.[to make load test and choose on for the event]
On Ubuntu 18
I enable mpm_ev...
Metallize asked 10/2, 2021 at 16:17
2
Solved
Tech Stack
Python (Monolith API) - Flask Framework
PostgreSQL
We have deployed docker container as follows
Docker image is stored in ECR
Docker container is deployed in ECS
In total 25 docker cont...
Alphitomancy asked 3/2, 2021 at 6:57
2
Solved
I would like to understand whether I need or is it considered as a good practice to have load balancer as part of the deployment of Elasticsearch.
As far as I understand high level rest client as w...
Sheathe asked 8/2, 2021 at 8:26
5
Solved
Can someone explain to me how high-availability ("HA") works for a web application ... because I assume HA means that there exist no single-point-of-failure.
However, even if a load balancer is us...
Freehold asked 30/10, 2011 at 3:52
1
Solved
I have setup the proxysql on MySQL master for read and write splitting. MySQL master and slave, proxysql server is running, however, I got an Access denied error in the proxysql terminal.
[devops@...
Goodhen asked 26/4, 2020 at 9:27
3
If I understand the CAP Theorem correctly, availability means that the cluster continues to operate even if a node goes down.
I've seen a lot of people (http://blog.nahurst.com/tag/guide) list RD...
Anglosaxon asked 16/4, 2015 at 1:9
2
Solved
I have two SQL Server 2019 instances running on Linux. These two instances both contain a single database which is synchronized using AlwaysOn Availability Group. Data in the database is synchroniz...
Denature asked 26/8, 2020 at 5:48
3
Solved
I have one direct exchange. There is also one queue, bound to this exchange.
I have two consumers for that queue. The consumers are manually ack'ing the messages once they've done the correspondi...
Kerbstone asked 30/5, 2016 at 8:10
2
Solved
I have a cluster of Kafka with 5 brokers and I'm using Consul Service Discovery to put their IPs into a dns record.
kafka.service.domain.cc A 1.1.1.1 2.2.2.2 ... 5.5.5.5
Is it recommended to use...
Agate asked 28/3, 2018 at 12:37
2
According to the "Guide to Scaling Web Databases with MySQL Cluster", MySQL Cluster 7.3 can acchieve 99,999% availability while using synchronous update replication.
This would be a antithesis to t...
Conn asked 3/7, 2013 at 11:38
3
Solved
There is a great talk here about simulating partition issues in Cassandra with Kingsby's Jesper library.
My question is - with Cassandra are you mainly concerned with the Partitioning part of the...
Bechuana asked 25/11, 2013 at 23:42
2
I am new to hdfs. I am writing Java client that can connect and write data to remote hadoop cluster.
String hdfsUrl = "hdfs://xxx.xxx.xxx.xxx:8020";
FileSystem fs = FileSystem.get(hdfsUrl , conf);...
Rubel asked 11/11, 2014 at 18:9
2
Solved
After reading Apache Hadoop documentation , there is a small confusion in understanding responsibilities of secondary node & check point node
I am clear on Namenode role and responsibilities:...
Huckaback asked 17/8, 2015 at 13:12
1
I would like to know about the existing approaches that are available when running Zookeeper across data centers?
One approach that I found after doing some research is to have observers. That ap...
Kendalkendall asked 19/1, 2017 at 9:8
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