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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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In my wordpress dashboard showing an error meassage when i tried to update plugins

My website showing an error message when I tried to update plugins. Error message is Update Failed: 503 Service Unavailable Service Unavailable The server is temporarily unable to service your request due to maintenance downtime or capacity …
Anupa
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How to "correctly" reduce downtime with Cloud Foundry deployments?

I am using Blue-Green deployment in order to reduce deployment downtime of a Cloud Foundry application (NodeJS). I am using BlueGreenDeploy plugin for the Cloud Foundry Command Line Interface (cf CLI)…
HCF
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calculate total downtime based on shift times

I am trying to write a query to give me the total amount of downtime minutes per shift. I have a calendar table that lists the start and end time for each shift for the entire year. Biggest difficulties I have been facing is how to calculate the…
Michael Stibich
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Calculate downtime

I would like to calculate the downtime for some processes. My data could look like this: Proces ID StartTime EndTime A 1 24-07-2018 00:00:00 24-07-2018 00:02:54 A 2 24-07-2018 00:00:16 24-07-2018…
Malene Fangel Høgsvig
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How HBase compactions affect clients?

I do know basic of hbase compaction i.e. how it works under the hood on HFiles. But, I am curious to know that what happens to other services during both the compactions (minor & major), will that be downtime for hbase? i.e. at the time of…
Vikash Pareek
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Grafana / Graphite - the time metric was in some state

I have metric "monitor.status" with values 0 and 1. 0 indicating service down state and 1 - up state. I'd like to render downtime period in seconds in Single stat panel. How to get the time metric was in 0 state and render it? Example: Value -…
Alex.Sh
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Copy SQL Server database to Amazon AWS RDS without downtime

I have in hands a task where I'm required to copy a 300GB SQL Server 2008 R2 Standard Edition to Amazon's AWS RDS. The issue is that a couple weeks ago, AWS finally released a feature that allows the restore of a .bak file generated by T-SQL's…
Fabio Silva
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What's the danger in DNS nameserver downtime?

I am thinking about hosting my own nameservers. Two different IPs are required for this, and generally it is expected that these will be two different machines because downtime of one's DNS nameservers is evidently "bad". But I can't find anywhere…
David Ljung Madison Stellar
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mysql : downtime from date range hourly/daily

I would like to track machine downtime/production output on hourly basis. Assuming below are the data from 2 tables. I am using unix timestamp but for this example i used date/time for easy refernce Table 1 - Output mc date/time output …
Wahsei
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How can I imitate or trigger server failure for testing server-to-server communication?

Say I have a backend server for my MVVM website, which needs to communicate with a data processing server. If one server goes down, the other is supposed to know how to handle that (save the files it wants to transfer, and wait until the server…
Fallen Asleep
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Apache server gets unreachable on a sudden

I'm not sure on which kind of community to post this question, but as i thought it could be a bug, i'll take a chance. Let me start with my situation. I've got a webserver (apache) running at home for over the last 3-4 years. First started off with…
Wouter Janssen
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Elasticsearch upgrade from 0.90.7 to 1.7.1 on live system

So I have a rather simple Node.js application running on a single server, using mongoDB as primary database and elasticsearch as a "replica set" with only search-relevant fields indexed in ES. I need the upgrade, because the older version conflicts…
BenMann
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Cassandra's nodetool repair appears to cause outages

I have a 4 node Cassandra cluster that didn't see a repair() for about 8 months, in between administrators. It doesn't see much in the way of deletes. I've noticed that when I run nodetool repair, the system will not accept new data, and nobody can…
Charles Cowart
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On updating a Spring XD module

I've been evaluating Spring XD for a major project and I'm wondering how to update module code with zero downtime. It seems that, for updating a module, it first needs to be deleted. And deleting a module implies destroying streams. Several ideas…
thiago
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Best way to optimize MySQL operations after a table grows

Background info: we run a an e-commerce website and are trying to figure out what is the best way to deal with "historical" data for tables that are used very frequently and are bound too contain a lot of records (ie. orders, customers, etc). I am…
odino
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