The downtime tag has no wiki summary.
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1answer
45 views
Redirect all traffic regardless of port or protocol to temporary page
I have a server with multiple domains. Both http (apache) traffic and http-alt (tomcat) traffic.
If/when I take the server down, I'd like to be able to redirect people to a temporary 'undergoing ...
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3answers
40 views
Apache access log and server outages
I've happened accross a odd issue this morning and I'm not sure where to go from here.
We use a couple of site up time monitoring services (pingdom, siteuptime) that essentially ping our server to ...
2
votes
1answer
87 views
Nagios Host Downtime Scheduling
Ok, so I've spent a bunch of time on this and I can not seem to get it working in my environment.
I have a Nagios 3.3.1 server with NConf 1.3. All works well and I'm pretty happy.
However, I have a ...
1
vote
2answers
79 views
debian mysql server always down
I am hosting a mysql server in a debian 6.0.4 server hosted in linode, the new data is frequently written into the mysql server using R, about 30-40 "write" per minute, about 7 hours a day, 5 days a ...
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0answers
83 views
WatchGuard WAN goes down where Management Server goes down
I have a WatchGuard XTM 5 series with two WAN connections in fail-over mode which is centrally managed by a WatchGuard Management Server. I've noticed when ever the Management Server (And Log Server) ...
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0answers
93 views
How to Monitor IIS app pools and alert for any down time?
Does any one have any good ideas for monitoring IIS 7 app pools for down time and either auto restarting them or alerting through email on them?
I found this link with a nice power shell script but ...
2
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2answers
90 views
Multiple instances of a web site on a single server - upgrade one at a time
I would like to host a single physical machine two copies of the same very site to minimize downtime during upgrades.
I think I could put a load balancer in front of the machine, assign two IPs to ...
0
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2answers
116 views
How can I find out why my EC2 instance was down for a while
I have an instance running at Amazon EC2. I just checked the monitoring, and I saw that the server was down for a while.
TO be more precise, there is completely no line between 15:16:00 and 15:46:00 ...
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1answer
130 views
Web server keeps going down, how can I find out whats causing it?
I am pretty new to running a VPS. I am using http://www.pingdom.com/ to monitor my server and notify me when its down.
What is the process I should go through to determine why is causing the server ...
0
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1answer
150 views
BUG: soft lockup - CPU#7 stuck for 10s! [php:756]
My webserver is giving me some problems in the last two months, it is freezing randomly, one time per day, and maybe sometimes it works fine for more days but then it goes down again.
The server runs ...
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3answers
84 views
How can a Webhoster provide mail service with small downtimes like Gmail/Yahoo mail? [closed]
In the last 5 years I noticed Yahoo Mail and Gmail services work really well, with some few short downtimes. And they are FREE services!!!
How can a Webhosting company with cPanel provide a mail ...
0
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1answer
80 views
Causes of HTTP to be down, but not HTTPS?
I came into work to a problem I haven't run into before, and was curious to see if anyone here might have any ideas about what may have caused it.
We run a VPS from Slicehost and sometime yesterday, ...
0
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1answer
39 views
Sporadically regular Rails (Passenger) outages
We're running a Rails application under Passenger (via Apache) on an application server. There is a front-end web server (also running Apache setup as a proxy) in front of the application server. ...
0
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1answer
33 views
Website not accessible on ceretain ISP's
When i attempt to load my website i receive the following error..
“Unable to determine IP address from host name for www.carehomesinleeds.co.uk“
Yet it can be accessed on my friends ISP and the host ...
0
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2answers
128 views
Downtime Tracking - Server, Connection and Application Level
I'm looking to see if there is a good "Best Fit" solution for what I'm being asked to deliver.
The IT company I work for contracts to a local business. While we have been long term partners, recently ...
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3answers
60 views
LAMP server has gone down a few times. Ideas for server optimization?
Our production web server has gone down a few times over the course of the last half year. In the end, we've needed to contact the web host and have them restart as I'm unable to even SSH in. This ...
0
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3answers
162 views
How to debug website that isn't loading
So I've got a website up and running with nginx/php-fpm/ubuntu
It works really well (and fast) and uses hardly any memory. My client started an ad campaign yesterday, and there were a couple times ...
0
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1answer
69 views
My ubuntu server is losing connectivity, require assistance troubleshooting
I have two server monitoring tools that check the uptime of my Ubuntu 10.04.1 LTS server. Over the last month both of these tools have reported the following outages:
Jan - 15mins: self recovery
Jan ...
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2answers
105 views
Client cannot access their web site from certain locations
We're hosting a web site for a client on our dedicated server (Ubuntu 8.10) but from certain places (including their main office) they cannot get the web site to load. We transferred the domain and ...
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2answers
327 views
How do I optimize a high traffic Wordpress website?
I am running a wordpress based site which is now hosted on (mt) under DV-Extreme package 2GB+256MB addon RAM. It a muti author site where people are engaged in writing posts, comments, updating status ...
2
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5answers
694 views
Allow host down while under nagios watch
We're using nagios to watch our servers health. Now we have a task to add server which will be up only for certain time. And during that time we have to ensure that all services are up and running. ...
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3answers
341 views
What is the best Time-Of-Day to run the maintenance of an international (English) website?
If you want to have a non-country-specific website in English, what is/are the best time-of-day to run the maintenance? You can also answer by specifying what is the worst time-of-day to run the ...
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5answers
173 views
Are web servers/services more prone to fail outside of working hours?
I've just had a server outage at 4.59AM on Sunday morning, and looking through our uptime records going back to 2006 all except for 4 outages out of 20 occured between 11PM and 6AM. (Only looking at ...
3
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1answer
237 views
Strategy for zero downtime rollouts: what about the DB?
We have an asp.net/MVC2 web app hosted on Amazon windows IIS7 that I would like to deploy updates to with as little downtime as possible.
Building on IIS ARR 3-site setup as described here ...
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3answers
117 views
How to keep sessions when moving from one application server to another
Assuming I follow the steps in this answer to deploy a new version of an application without downtimes. When I route the users to the new application server instance, the application will not remember ...
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3answers
111 views
Migrating Shared Hosting and Email
I know there has already been a question that has been posted here about migrating shared hosting accounts, but wanted to get a second opinion on my plan to move hosting providers. My business is ...
2
votes
1answer
200 views
How to upgrade Postgresql 8.3.x to 8.4.x without downtime?
Is it possible to upgrade from PostgreSQL 8.3.x to 8.4.x without downtime? We have a warm standby configuration with WAL shipping so we have the option upgrade the standby first, but WAL shipping does ...
6
votes
3answers
296 views
How to manage communication during application downtime?
I've had a lot of experiences lately with application downtime, from both vendors and my own applications. This has got me thinking and as best I can google there isn't really a good or standard way ...
0
votes
1answer
56 views
How to move multiple Apache Rails applications with minimal downtime
I have a server hosting some 80 small rails applications. We have recently upgraded the disk space, so now we have to move all sites to this new disk. The host is a VMware ESX server, so all disks are ...
0
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7answers
367 views
server downtime self detection?
What is the easiest way to check if the server is down? not using a 2nd server or my home computer. Preferably self detection.
I was thinking of having a cron job use libcurl every few minutes to ...
0
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3answers
106 views
site stall, apparently due to mySQL stall
One site I manage is on a shared hosting server from a major vendor. The site runs a MySQL-backed CMS.
In the past few months, my admin colleague and I have noticed several apparently random ...
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3answers
116 views
Downtime scheduling - can it be automated?
When servers need to have scheduled downtime at my workplace we follow a process roughly like the following:
Propose time for work to take place on specific box/s
Lookup list of stakeholders for ...
2
votes
1answer
155 views
Graceful maintenance of web applications
I asked this question on Stack Overflow and got some good responses. A couple of SO members mentioned I should ask it here also to see what the SysAdmin perspective on this is. So here goes:
I live ...
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0answers
157 views
VPS Always Hanging
I have a linux VPS with the following specifications:
Disk Space: 100GB
Mem: 1024 MB
Burst Mem: 1536 MB
Bandwidth: 3000GB
I have checked my VPS and the VPS never exceeded the limits . However, the ...
3
votes
6answers
486 views
Build two servers or buy one from manufacturer?
I'm replacing three 7 year old servers with one new one. We are a small k-12 independent school, running AD, exchange, a database, and 3 3rd party apps.
From my research it looks like I can build 2 ...
11
votes
1answer
272 views
What HTTP status should I return during temporary site outage/downtime?
I'm going to be taking down my website for an upgrade to the code. I'd like to have a temporary downtime page display during the upgrade. For the sake of preventing issues with bots attempting to ...
0
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2answers
358 views
can't reach my site through port 80 - server is up, apache is up and fine.. any clue?
Site was up fine running, I didn't do any tinkering at all and just randomly I can't seem to access port 80.
I've submitted a ticket to my host ( Rackspace ) but just wondering if anyone had a ...
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6answers
629 views
Server Failover Scenario
I've got two Dell PowerEdge 2950 servers. In order to (hopefully) eliminate any downtime, I must implement a solution to detect and adjust to component failures, environment failures, etc ... the ...
6
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13answers
555 views
Most significant server outages in the past decade
What is the most significant server outage/downtime that occurred within the last decade due to performance issues, bottlenecks and scalability problems?
Two such examples are the constant problems ...
18
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11answers
1k views
Proactive sysadmin tasks
What things can be done around the network in the unusual time when a sysadmin is not busy.
9
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4answers
863 views
Documenting an outage for a post-mortem review
We had a rather serious outage this past week affecting several services which put us out of our SLA with customers. Now that everything has been resolved, I am conducting a post-mortem review.
From ...
5
votes
10answers
969 views
How to migrate a web site from one server to another with minimal downtime?
I have a server hosting a web site and other services that needs to be reinstalled. I would like to relocate these services to another server temporarily, with as little downtime as possible. Both ...
4
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4answers
422 views
Last time SQL Server downtime or data-loss occured, what happened?
This isn't a question about how to cope with or limit downtime or data-loss, I know all about that. I'm putting together a 'stories' section for my PASS post-con on disaster recovery and I'd like to ...
