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Questions tagged [downtime]

The term downtime is used to refer to periods when a system is unavailable.

Downtime refers to a period of time that a system fails to provide or perform its primary function.

Reliability, availability, recovery and unavailability are related concepts. The unavailability is the proportion of a time-span that a system is unavailable or offline. This is usually a result of the system failing to function because of an unplanned event, or because of routine maintenance (a planned event).

The term is commonly applied to networks and servers. The term is also commonly applied in industrial environments in relation to failures in industrial production equipment.

Some facilities measure the downtime incurred during a work shift, or during a 12 or 24-hour period. Another common practice is to identify each downtime event as having an operational, electrical or mechanical origin.

The opposite of downtime is uptime.

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Adding a value for Enum Column for Mysql - will it involve a downtime?

I want to update an Enum in RDS Mysql and add a value to an column. I have huge data existing in the same table which I want to update. I assume that while updating the schema of the table, the table gets locked which clearly involves a downtime…
Amit
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How may I update my Java EE application with no downtime?

How may I automate (no downtime) deployment? And be able to turn any server off for maintenance. What tools should I use? I am using Tomcat but I am willing to move to other Java EE server best suited for the requirements presented. I would like to…
Eduardo
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Parts of https://jenkins.io is down. How do I report it?

So https://www.jenkins.io/ has been down for at least most of the afternoon. The main page is accessible, but blog posts and plugins etc. aren't available. I get a 503 that looks like this: I figured I'd try again later, but since it was still down…
Erik B
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Jelastic - Zero downtime deployment with PM2

Is it possible not to stop nodejs app when updating app source code from GIT? Currently Jelastic stops the server before fetching files from GIT: Stopping nodejs server: [PM2] Applying action deleteProcessId on app [all](ids: 0,1) [PM2] [app](0)…
Ivan Nikitin
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Enabling storage autoscaling in AWS RDS PostgreSQL can produces downtime?

I want to enable storage autoscaling by the first time in a AWS RDS PostgreSQL instance. Someone knows or have some documentation to clarify if this requires downtime? i can't found any articles or documentation about explicitly "enabling…
Gonzalo Bahamondez
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Rollingout updates in docker swarm

Created a micro service application with spring initializer and deployed using docker. For rolling out the latest changes creating the docker image with the latest code changes docker stack deploy -c stack.yml mystack application is running with 2…
Jinna Balu
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Consequences of ARCHIVELOG

The guys responsible for the backup of our servers get our database (a large one) offline for over 6h for the whole backup scene. I spoke to them asking if we could break that down to smaller and more frequent backup tasks, i.e. backing up each…
filippo
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How to achieve zero downtime deployment with database schema changes

I need to achieve zero downtime deployment for my e-commerce site while performing database schema changes. The database is sql server 2005. Can someone verify whether the following steps are feasible? Please provide your suggestions. The principal…
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How to calculate network system downtime

Here are two systems, A and B. How to calculate the downtime of each. For A, should it be: 0.01 * 10 * 6 * 12 = 7.2 hours/year? A system has 10 physical nodes, if any of those nodes failed, the whole system go down. The probability of failure for a…
Orup
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check_mk downtime scheduled downtime

Is there a proper way to setup a downtime in check_mk? I mean, if I have to restart a host. How should I create a scheduled downtime? It should apply to host? it should be applied to all services? I should be applied both: host and all services?? I…
Carol
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Uptime / Downtime Production Batch Report via SSRS SQL Server 2012 Updated

I am working on another report using SSRS via Visual Studio 2010. I am a rookie with SQL but things are starting to make sense as the weeks go on. Purpose is to create a report that displays the Batch up time / downtime calculated from the…
Jester
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How to update a docker swarm service with no replication with zero downtime?

I want to update docker swarm service without down-time. The problem is that I don't have enough resources to have service replication. Is there anyway to do this?
Pavan Kishore
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Reasonable Downtime

I run about 5 different hosted servers, through a variety of hosting providers. In the past two months, one of the servers I work on has been down twice. Both times were unexpected and fairly long (36 hours and 4 hours). The server in question is…
Brian Fisher
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Fail-safe datastore updates on app engine

The app engine datastore, of course, has downtime. However, I'd like to have a "fail-safe" put which is more robust in the face of datastore errors (see motivation below). It seems like the task queue is an obvious place to defer writes when the…
David Underhill
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How can I trace the downtime reported by Newrelic

I am getting downtime alert for web application with different failure messages. these all are 2-3 mins downtime. This downtime is random 2-3 times in a day. failure messages problem parsing the HTTP response, no further detail…
Raghvendra Parashar
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