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Questions tagged [uptime]

102 questions
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General SLA Expectations and Maintenance for Standard Services

What would generally be your expectation for SLA uptimes across the following services in a given month for a 'normal' scenario? I'm including my expectations... the purpose of this question is to find out what the standard baseline should be in…
Brandon
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Reasonably-priced, multiple endpoint heartbeat software

We've got four servers in use for a mission-critical application that all need constant connectivity to each other--six always-up connections in total. I need a way to monitor these connections and fire off, at the very least, an email when any one…
Brennon Bortz
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How to monitor Flash applets?

We created a fancy Flash application for a customer and deployed it. The server itself is monitored by the hosting company, but is there any external monitoring service that works well with Flash applets? We want to test that (a) the Flash app is…
Francis3
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1 answer

Debian Server Keeps Restarting Unexpectedly

My laboratory' server with Debian-Wheezy-7.8-Stable keeps restarting few times after some hours of uptime without any notification. This server is set up for considerably high load numerical computation as well as parallel computation. I have…
Franky
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How to protect power strips from accidental shut-offs/"cleaning lady" attack?

Are there any power strips or products designed to defend against a "cleaning lady" attack (cleaning crew is vacuuming the floor and bumps the power strip switch, turning off all the connected equipment)? I have some curious felines in my house that…
Thank you
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Exposing server uptime a potential security vulnerability?

I run a browser-based game and as part of a page with a bunch of game statistics, I have the server uptime listed. It's currently at 177 days and so someone mentioned to me that I shouldn't do this because a long uptime indicates the kernel is old…
Ed Mazur
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Method to calculate downtime percentage

I need a calculation to work out the downtime percentage of a server. I am making a script that runs via cron every minute to check the uptime of a remote server. The two values I have to play with are number of checks run and times the checks…
Chris
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How to transfer a domain name with 99.9999% uptime?

I am currently developing a project which is mission-critical. The actual domain name is registered with 1 & 1 and I plan on purchasing DynDNS Custom DNS service (which has 5 different geographical locations for DNS) and then another secondary DNS…
user35204
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Lifetime of IIS worker process or AppDomain

I have an ASP.NET app hosted in IIS, and I have automatic worker process recycling/shutdown disabled. I'd like to have a rough idea of how long the app has been running continuously without being re-loaded. My thinking is that one source from which…
G-Wiz
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Can linux uptime value be trusted to pinpoint time of outage?

I have 2 servers, one is reporting uptime of 9 hours, the other 7 hours. I have no other monitoring system in place. My "hosting" provider says it was a single power spike event that rebooted both and that the uptime cannot be trusted to be…
evilpenguin
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How to deploy changes to a production website while not taking the website down for a fraction of a second?

I use Git to manage the development cycle of my web application, and for changes where a git pull is enough and no changes needed, I just naturally keep the site up and git pull the changes. But I'm thinking, say I have 100 files changed, and say…
OverCoder
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Uptime for individual service

I am running multiple unicorn processes on my production server. Now I want to check the individual service uptime of my services. For instance if any unicorn process restart automatically, it should start recording its uptime. By this means I want…
Shailesh Sutar
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With Ubuntu livepatch and unattended-upgrades is it possible to run a server fully patched without restarting the server or services or logging in?

A few weeks ago Canonical started offering livepatching for kernel updates without needing to reboot the server ( http://insights.ubuntu.com/2016/10/20/live-kernel-patching-from-canonical-now-available-for-ubuntu/ ). Assume the following scenario:…
H. Idden
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Storing / calculating historical load averages

When I run uptime, I get output similar to the following: 07:50:39 up 13 days, 5:00, 1 user, load average: 0.00, 0.02, 0.00 Is there a way, other than by running uptime every X-many minutes, to get a more historical load average? I'd like to be…
warren
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How does Heartbeat determine when to switch to the secondary? Can you force it to switch?

I've been trying to understand exactly how Heartbeat works - I understand how when one server dies, it switches to the backup. But, for me, it also switches when the primary has a large increase in workload. But, it doesn't always switch at the same…
Luke Shaheen
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