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-2
votes
0answers
28 views

How to find the cause of regular site failures? [on hold]

Almost every day I get the same notification from Host-Tracker saying my site is down. I suggest it is connected with the response time (I have set it to be not more than 5 seconds). Here are details ...
0
votes
1answer
37 views

Maintaining uptime on heroku

I'm sure this been asked many times before, but I can't find any previous questions here. We had an outage on our Heroku applications the EU last night. What techniques or strategies can we use to ...
0
votes
1answer
51 views

Strange overload on apache2 web server [closed]

I recently inherited a web server setup from another developer. Its basically the following: 2 web servers running apache 2 2 load balancers running nginx 2 database servers running MySQL Every week ...
5
votes
1answer
2k views

HAProxy graceful reload with zero packet loss

I'm running an HAProxy load balancing server to balance load to multiple Apache servers. I need to reload HAProxy at any given time in order to change the load balancing algorithm. This all works ...
3
votes
1answer
188 views

apache httpd restarts every 24 hours

I have an Apache/2.2.22 (Linux/SUSE) and it automatically restarts every day at the same time. I have no cron jobs configured to do that on any user. I started collecting minutelly snapshots of the ...
1
vote
1answer
127 views

Load average 1.00 while top seems to show the server as idle

My server is not responding to HTTP requests, and it took me a long time before being able to log in with SSH; it all looks like the server is overloaded and on its knees. It already did that a few ...
11
votes
2answers
498 views

How can I find out the very first time linux machine start up? [duplicate]

When we use uptime, it only shown us the up-time of ours machine since it started from the last time it turning on/shutdown/reboot. But, what if I want to get the time when our machine started from ...
1
vote
2answers
129 views

Diagnose why server went down

I have a couple of Asp.Net web apps running a Windows Server 2008 R2 VPS. We have been using this VPS for years. Since the last few months, we have had our apps go down for 30-45 mins. This doesn't ...
0
votes
2answers
110 views

monit displays false number from my uptime script

I've wrote a script for fetch real uptime and display in monit. But I think it displays just exit error status. My uptime script is: #!/bin/sh uptime=`uptime | awk -F " " '{print $3}'` echo $uptime ...
1
vote
4answers
553 views

Server Load very high despite CPU usage being low

When I run the top command I get this top - 23:20:50 up 1:25, 1 user, load average: 11.02, 11.20, 10.41 Tasks: 262 total, 3 running, 258 sleeping, 1 stopped, 0 zombie Cpu(s): 75.6%us, ...
2
votes
4answers
1k views

How can you tell if a server is down?

Let's say I am getting no connection to a website over http, ie. "Oops! Google Chrome could not connect to x" returns in a browser. What steps can I take to determine if the server is completely ...
1
vote
2answers
609 views

Command / Method to find the up-time of SSH server daemon & Nginx

I am looking for a method / Linux command to get the up-time of the open-ssh server and Nginx server running on my Ubuntu system. I want to know the up-time for calculating some internal statistics. I ...
1
vote
1answer
480 views

Linux - incorrect Idle time values from /proc/uptime

I am curious as to why I am getting an incorrect Idle Time from the /proc/uptime on my server. Output of cat /proc/uptime from my server: $> cat /proc/uptime: 1218960.08 15958635.85 $> ...
2
votes
3answers
122 views

Achieving Five Nines

I am building a web application where uptime is key. I understand that 100% uptime is not realistic but I would like to achieve five nines. I'm unsure as to the most prudent way to accomplish this. ...
1
vote
2answers
141 views

How to verify promised uptime before hiring a server?

I've been bitten by this too many times. You find a well known hosting provider, read comparative reviews (and pass by on any company that has influence in those review), they promise 99.99% uptime, ...
-2
votes
2answers
182 views

DNS no longer works after server reboot [closed]

Strangely enough, when I reboot my Ubuntu 12.04 server, the DNS no longer works, which makes the domain unavailable to access to my site. Normally the DNS should be working after a reboot, but this ...
0
votes
5answers
181 views

Monitor Windows workstation uptimes

I need a simple setup to monitor the usage of several Windows 7 machines in our office. Nothing fancy, I just need to know when they are turned on and off, and ideally have an overview of daily uptime ...
1
vote
1answer
573 views

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 ...
2
votes
2answers
3k views

Is there a locally hosted service (similar to Pingdom) for monitoring uptime/response time? [duplicate]

Possible Duplicate: What tool do you use to monitor your servers? I'm looking for something to monitor intranet apps and internal web services, and provide logs of historical response ...
-1
votes
1answer
352 views

What is the most stable AWS EC2 region? [closed]

I'm wondering if anyone has compiled any stats about which region in AWS has experienced the fewest outages, and/or has the best uptime percentage? From my very anecdotal experience US-East-1 (the ...
1
vote
1answer
99 views

Considering no website/service is 100% up, how do systems measure web downtime with precision?

I think the title speaks for itself. But, to give an example: In a recent post, 37 signals show it's real downtime and compares with other web services. They get very few down time and probably most ...
1
vote
6answers
713 views

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 ...
0
votes
1answer
412 views

Is there a pingdom-like service that has hosts in Asia and South America [closed]

I am looking for a remote monitoring service, similar to pingdom, that has more global reach. Right now pingdom only has coverage for North America and Europe. Does anyone know of a competing service ...
2
votes
3answers
156 views

Do these server uptime 'pinging' services really do anything special?

Other than pinging a particular endpoint like to see if my website server is returning, do these server monitoring (ping) type services offer anything else? I'm just thinking it is cheaper to get a ...
0
votes
1answer
782 views

Fake Server Uptime (Linux/Windows) [closed]

Is it possible to fake the server uptime in any way (throttling the time).?(Linux/Windows). I guess it will cause serious troubles, still just wondering. -Cheers
0
votes
2answers
58 views

Check status of links to pages posted on my site

When people post links on my site, I kinda want to just make sure that the website they link to is active and not dead. How can I check this? I was thinking to use meta data or title but I don't ...
4
votes
3answers
342 views

How do I handle post-mortems/incident reporting with Nagios?

I just started using Nagios and I like that my team can acknowledge problems, but I haven't yet found a way to log the solutions that are used to correct the problems. Is there a tool that logs ...
1
vote
3answers
499 views

DNS Round Robin only if one goes down?

I've got two servers, equal capabilities in terms of processing power and load. What I am trying to accomplish is this: (I already own and run DNS servers so this shoudln't be a problem). Server A ...
2
votes
1answer
751 views

What does the suffix 'w' and 'd' mean with 'TIME+' in top?

Here's a chunk of the top from my server: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 18878 www-data 20 0 200m 13m 4704 S 0 0.2 0:00.07 apache2 12374 ...
-1
votes
4answers
558 views

Difference between a ping and a GET request? [closed]

What is the difference between a ping and a get request? The goal is to see if the site is up.
2
votes
5answers
193 views

Reinstalling Linux: how to avoid downtime?

My website runs on a dedicated Debian LAMP server . I would like to update the system (let's say I have a pretty old Debian version and I want to reinstall everything from scratch) What strategy can ...
0
votes
2answers
263 views

How Can Linux Top Show 2% Idle, but Load Say 1.20?

On CentOS5, I'm seeing the 'top' command showing a hover between 20% and 2% idle, but then the load says 1.20. How can that be possible? When I type 'uptime', as well, I see 3 load numbers that are ...
1
vote
2answers
3k views

Determine process uptime

Is there a way to determine the 'uptime' of a process in Windows. Disappointed to find that it is not one of the attributes available when using the Task Manager.
1
vote
2answers
136 views

Uptime Monitoring solution that opens a constant socket connection?

I want to monitor some servers and some of them have the potential of having very unstable connectivity. This is because they are located in office locations that only have consumer internet access. ...
4
votes
7answers
1k views

Detecting restart since last run in a shell script on Linux?

What's the best way to tell from a shell script if the host has restarted since the last time the script was run? I can think of storing the uptime in a file on each run, and checking if it has ...
11
votes
7answers
737 views

Uptime Monitoring Every Second - Bad For the Server?

I'm wondering if there's avantages of checking if a server is UP by doing a "HTTP GET Request" every second? Can any server handle it?
3
votes
2answers
137 views

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 ...
2
votes
4answers
228 views

Question regarding uptime strategy for website

I'm working on a website where we need to have a good deal of uptime. Specially in the short bursts (15-day periods) that the website's events happen. The page is dead simple and can be served ...
2
votes
4answers
2k views

Ping Equivalent For Checking If A Port Is Open

How do I check if a port is consistently alive? For example, I could use ping 192.168.1.1 -t > results.txt This will ping 192.168.1.1 continuously so that I could monitor it. Is there an ...
0
votes
3answers
186 views

requirement for monthly uptime and system performance

Management wants uptime and system performance data monthly (CPU) for our systems which consist of a mixture of linux/unix/windows machines. Anything out there that might provide this information? ...
1
vote
3answers
127 views

Should I leave my hosting provider

I have my website hosted with a hosting provider and they have recently had a serious outage. So at the moment it is at 48 hours and counting where I can't access email, http or ftp. I'm obviously ...
0
votes
1answer
60 views

What problems can I have by pinging or making a HTTP request to a website every minute?

What problems do I have to think before creating a monitoring system like pingdom, etc?
2
votes
3answers
253 views

Is reading the HTTP GET response enough to know if the server is up?

I want to make sure the site is UP and running. Is reading the HTTP GET Response enough? What does services like PingDom test?
1
vote
1answer
1k views

May I use CDN for whole website (PHP, Apache, MySQL) or just for images and CSS, JS files?

May I use CDN for whole website (PHP, Apache, MySQL) or just for images and CSS, JS files? What's the best choice > cloud-hosting or dedicated-hosting? Does CDN has that support? Witch hosting you ...
1
vote
3answers
1k views

Is there a Ruby, Python or open source way to monitor uptime?

Is there a Ruby, Python or open source uptime monitor like PingDom, etc?
2
votes
3answers
248 views

“uptime” and “who” disagreeing

I've got an Ubuntu server that's exhibiting a somewhat strange behavior. uptime reports the following: 07:48:10 up 627 days, 21:19, 3 users, load average: 0.04, 0.01, 0.00 w reports: 21:59:25 up ...
0
votes
2answers
131 views

Verifying hosted VOIP PBX uptime

For the second time, I'm outsourcing my VOIP hosting to a provider, whom I have to trust their sales pitch of 45 minutes down per 365 days. Is there an automated way I can test their server(s) ...
0
votes
2answers
226 views

service uptime guarantee calculation

I have a web system. I need to calculate the up time of the whole system. I have load balance (in the moment without virtual ip and redundant load balance), one database. Two servers as cluster. ...
3
votes
3answers
4k views

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 ...
1
vote
4answers
1k views

nginx: how to load a new conf file witout restarting nginx

I made a new conf file in sites-available (and linked it in sites-enabled) and now I want to "install" that conf file without resetting the nginx server. As root, I can run nginx -c file.conf since ...