Questions tagged [maintenance]

maintenance is keeping hardware and/or software systems in a healthy state by performing tasks such as updating, cleaning or replacing parts.

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48 views

Blank screen while working remotely

So, I have this remote ubuntu 18.04 machine that runs graphical application and needs updates or other attention sometimes. Since its in public place, I would like to somehow show overlay like "...
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1answer
26 views

How do I temporarily pause, stop, block, or deny users from logging into my Windows Server 2016 application server during maintenance?

I have an application server into which multiple users log in daily, but I want to keep them off while I am working on some maintenance tasks. How can I do that?
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Can I use lastcomm to find which of several versions of Java was exectured?

I have a dev box with several versions of Java. I want to clean up the old versions, but I need to make a case for the change by showing usage of the different versions. I've turned Process ...
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20 views

Fan failure alert appears after replacing fans in 3COM 5500G-EI

The Superstack switch has started be more and more noisy so I decided to replace the fans. After this I get constant changes in fan status, every 10s or so. From OK to failure and then back again to ...
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48 views

Does me hitting the serverfault site during routine maintenance cause the server/sysadmin team issue?

Not sure if this belongs here, but had the thought while trying the hit Stack Overflow during routine maintenance. Does me hitting stackoverflow.com when its down cause issues on the servers? If ...
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41 views

Restore SQL dump in a running Kubernetes deployment

TL;DR: I imagine that there is a way to temporarily disable access to a pod / service so maintenance can be done. In this case: Block access to a database so a dump can be restored. $ kubectl exec ...
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2answers
719 views

GCP Maintenance Events

We recently experienced an issue where our master Dataproc instance rebooted and some of our services didn't start up cleanly; we're not sure what triggered this reboot but the logs suggested that it ...
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0answers
61 views

SSL cert mismatch on redirect to sorry/maintenance website

We are trying to address an (IIS) SSL cert mismatch issue. We own dozens of domains name for various lines of business. We have multiple websites load balanced on a netscaler onsite. For example, ...
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1answer
91 views

Are .htaccess redirects secure/reliable (website maintenance)?

Our website will be going down for around an hour or so for maintenance. All users need to be redirected to a page indicating that the website is receiving an update and/or under maintenance. Will ...
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1answer
30 views

How to allow root login server and disallow website users connection in centos 7 maintenance period?

My clound VPS server is centos 7.4,I run apache,mariadb in this server. Now,I want to migrate from mariadb to mysql. During maintenance, server need no user disturb. In centos 7, has no run level 1,...
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1answer
872 views

Nginx - A common maintenance page for multiple dockerized Angular applications

I am hosting multiple Angular apps with Nginx. All of them run in their own containers and if a container is offline, I display a maintenance page located at /var/www/maintenance/. To do this, my ...
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2answers
509 views

Script to delete many old user profiles from file server?

I have a network share on a Windows Server 2012 machine that is used to store all the user profile files (My Documents, Desktop, etc). There are hundreds of old users I need to get rid of and I am ...
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1answer
1k views

Restart Systemd unit after dependency

I have a web application that is started by systemd. It uses Postgresql as database, so it rely on it. Here is the unit file of my web application (I have remove the un-relevant/sensitive parts): [...
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2answers
51 views

VPS - Maintenance Efforts

I'm contemplating about moving my current website to a VPS - Plan instead of a shared hosting which I'm on now to make the deployment process of updates a lot easier (the shared hosting environment i'...
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1answer
642 views

Should you occasionally discharge UPS to higher degree?

We're occasionally experiencing some short outages (few minutes at most or even seconds) so batteries in UPS almost never get below 90-80%. Is it advised to sometimes (eg. once half a year) perform ...
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0answers
42 views

Active Directory - User profile/workstation administration without file-service access - Best practice

We are a small company with 15 users which is now setting up its first Active Directory (1 machine with Windows Server 2016 Essentials). I am unsure how to setup a secure environment for my situation ...
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2answers
3k views

Disable all services, except ssh

How can I disable all services except ssh on modern (systemd based) linux distributions? I need to implement a maintenance mode. All these services need to be down: postgres postfix apache cups ...
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1answer
531 views

Debian squeeze - Unable to upgrade bash

I'm trying to upgrade bash so its not vulnerable. I tried Sources List Generator for Debian. But libtinfo5 is stopping me from upgrading bash. I could not find older version (due to source list ...
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2answers
2k views

Run AWS RDS maintenance manually

I received an email from AWS about one of my multi-AZ RDS instance. They basically said that there was going to be an upgrade during a certain period: We are contacting you to inform you that one or ...
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2answers
1k views

Disable maintenance mode from within recovery (Debian)

My rootserver's power supply died the day before and the hoster had to replace it. Since then, the server does not boot correctly anymore. Because of the sudden powerloss, it starts right in some kind ...
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1answer
110 views

make shutdown / reboot warn on a shared server in case of user sessions or high load

Is there an easy way to warn an admin on shutdown, reboot, poweroff, halt, ... about: ongoing computations (high load, high disk io) open bash / zsh / ... terminal sessions other logged in users ...
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1answer
70 views

Postfix relay, how to put the relay in maintenance ? (stop listening to port 25 but finish sending active queue)

I do use a postfix relay that does some custom mail filtering. Sometimes this is need for maintenance to disable this relay. I need the relay to stop listen to port 25 so that other MX records still ...
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1answer
1k views

Synology volumes vs shared folders

What is the benefit of making more than 1 volume on disk group on Synology DiskStation? Or, in another words, what is the benefit of organising data into a) many volumes vs b) many shared folders on ...
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2answers
2k views

How to kick users from Windows Server 2012 R2

I need to migrate some databases from one server to another to decommission the first one. This server is sharing a network share and a database. Prior to migration and to ensure data integrity, I ...
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1answer
125 views

Windows 10 directory Installer takes too much space, can I set it as compressed folder? [closed]

Windows 10 directory Installer takes too much space - 41 GB. First I have problem with Microsoft search which has 31 GB. I manage to reset it. Then I upgraded to Windows 10. After 1 month I deleted ...
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2answers
621 views

Automatic Updates on Production Server

Seeing as there have been more and more exploits recently with shellshock etc. Have the opinions of people changed in regards to having automatic updates on production servers? And what would the ...
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1answer
83 views

SQL 2005 SP4 Maintenance Plan Not Saving

I am using SQL 2005 SP4 specifically version 9.00.5000.00 it is the Standard Version and I am accessing it using SQL Server 2014 Management Studio. I am trying to create a rebuild index tasks from ...
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2answers
2k views

Why isn't the Microsoft Update Catalog working?

The Microsoft Update Catalog web site seems to be very unreliable. If it isn't working, what troubleshooting steps are sometimes helpful? (Please note that the Microsoft Update Catalog is not the ...
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58 views

Security maintenance on cloud instances created with docker-machine?

After reading about some people's issue with Docker hosts' time going out of sync, I realized that my Docker host on Digital Ocean (created via docker-machine) may want ntp running on it, and that got ...
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2answers
779 views

How to automate disk checking in Windows?

Chkdsk is a very manual, technical solution Hard Drive checking in Windows reports a lot of unnecessary info, requiring that you read through it the chkdsk report, etc. Also chkdsk can't fix problems ...
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1answer
110 views

What is required in installing/maintaining a software package on a production server? [closed]

A coworker of mine and I are discussing the use (or not) of a full text search solution, namely Elasticsearch in our web application. I am the developer of the web application, and he manages the ...
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1answer
16k views

doveadm: Delete messages older than date

I've a situation where some users keep very old messages (+5 years) on their mailboxes that are just a waste of space and due to safety reasons should also be deleted. I find out that I could use ...
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1answer
260 views

Squid reverse proxy: maintenance mode

Currently I am trying to configure my squid (3.1) reverse proxy to always display a static webpage when the one and only backend webserver is under maintenance. There is no need for an automatic ...
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1answer
233 views

Hitachi CR210 console command

I am looking for command for console for Hitachi CR210. this is the equivalent of HP ILO, where you can connect to ILO IP with ssh, have access to console (if OS is in text mode), issue power off/on ...
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1answer
31 views

Determining optimal maintenance windows for end-user system patching

What would be good information to use in order to identify and report on times when the highest number of transient end-user systems such as laptops are connected to the network? Available to me is ...
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2answers
253 views

Allowed production maintenance during business hours [closed]

I recently came into managing a small startup. As most small startups, I would think, we have been doing what we wanted in production virtually when we thought it was okay. People are careful and ...
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6answers
1k views

Any ideas on how to run maintenance on a site that is always under use?

I help out with a large gaming site in Australia. We run competitions from 7am local time to 1am the next day, every day of the week. We haven't skipped a day since the site was released. Naturally, ...
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1answer
70 views

Looking for some useful resources to find out site and server downtime reasons [closed]

I have recently started monitoring some server instances at digitalocean, OVH and an independent provider at biznesshosting. The application servers' stacks are based on: CentOS NGINX with Passenger ...
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2answers
2k views

Website/Server down for maintenance - Redirect to 'Landing Page'?

I have been given the task to make it so when customers try to access their websites while maintenance is taking place (Whether on their website, or taking the whole server offline) they are ...
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2answers
195 views

Is it safe to reboot Linux every night? [Being attacked] [closed]

Is it safe to use reboot command to reboot VPS every night? I'm under attack everyday for ~30 mins and I'm pretty sure if they could attack, they would do it non-stop. I contacted hosting provider, ...
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2answers
799 views

How can I deploy a 503 maintenance page when upgrading a Digital Ocean droplet?

Usually when I perform maintenance that requires briefly taking my site down, I put up a 503 page using something similar to How can I make Nginx return HTTP 503 when my proxied app server is down?. ...
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3answers
3k views

What is recommended size of hard disk for a Server?

I have heard that large hardisk >= 1TB are not recommended on the server because they can cause synching issues if one fails + their chances of failure is greater over a longer period of time as the ...
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3answers
26k views

haproxy: how to prepare a server maintenance without kicking app sessions?

The issue I'm using haproxy to load balance web servers. I use session persistence with additional cookies as some applications use session files and these are not synchronized between servers. I ...
19
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4answers
9k views

Determining LTO Cleaning Tape Expiration?

I have some LTO tape drives, and use cleaning tapes as required, but the lifetime of the cleaning tapes is not as predictable as I would have expected. I'm looking for a way to query the system, ...
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0answers
388 views

AWS EC2 replacement instance

I've inherited our AWS management duties for the time being and I've received a notice from AWS about some of our instances needing regular maintenance. The EC2 instances are pretty primary, a proxy ...
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1answer
101 views

How to calculate draw power from specs for a UPS [closed]

We recently installed some new blade servers and we have 'overloaded' our current UPS (APC Smart UPS 3000). We bought an identical UPS to balance out the load, however, we did not have another 30 Amp ...
1
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1answer
91 views

bind9 + lighttpd: Accept all requests coming from certain name servers and reply with static page

So, I've this situation: A server (under CentOS) with a lot of domains with around 2 TB of data under them, and I'm migrating it all to another machine with faster I/O. The migration details / ...
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1answer
1k views

Manage oVirt environment

I'm starting to deploy oVirt in one of my works, and I have a lot of questions about how to manage everything when you start using it. First I'll describe my setup. I have three machines, two ...
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5answers
11k views

How can I automate the deployment of cisco IOS upgrades?

I was googling this and didn't turn up anything. If you have 100 some odd Cisco routers and switches how do you push out new IOS releases? Certain not by manually logging into every device. The only ...
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2answers
5k views

MSSQL-Server: rebuild vs reorganize Index and Update Statistics

We had a database which was very slow (MS SQL SERVER). Now we figured out, that the indexes were never rebuild oder reorganised. (At the moment it is not clear if this really was the problem but we ...

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