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mailgraph statistics for postfix running on nginx

Posted in linux, server, srvbox on 2013/07/20
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I'm using postfix as my mail server. In order to get nice graphical overview about the server activity I'm using mailgraph. Mailgraph is a cgi script written in perl. It uses rrdtool to produce daily, weekly, monthly and yearly graphs of received/sent and bounced/rejected mail. Installing mailgraph on debian is as easy as running: aptitude Read More »

Server Availability with nagios and bootstrap

Posted in linux, server, srvbox on 2013/06/06
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Nagios is one of the most known monitoring systems. It is powerful and thanks to the modular plugin architecture you can easily monitor just anything with it. I'm mainly using it to monitor my vps machines and services as web, dns, imap, smtp, mysql. Nagios offers web gui, where you can see everything, starting from Read More »

copy.com - new cloud storage with Linux client 15GB free + 5GB referral

Posted in linux on 2013/05/15
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copy.com is quite new "cloud" storage provider on the market. Beacause they are just starting, they offer 15 GB of free storage at the moment. They support Linux out of the box providing a Linux client app. In addition to Linux they also support Android, iOS, MacOS, and Windows. If you need more storage they Read More »

tmux attach - no sessions quick fix

Posted in linux, server on 2013/05/15
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I'm using tmux (terminal multiplexer) instead of screen, because it is less resource hungry. Today while cleaning up /tmp folder I accidentially removed tmux folder. After the next login I was getting the folling message while trying to attach to the previous session with tmux attach: no sessions The output of tmux ls was reading: Read More »

pptp vpn on opevz vps server

Posted in linux, server, srvbox on 2013/04/15
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If you are in the need for a vpn server for you iphone, android phone or just notebook or home pc, here is how to do it quickly on a vps server. What you need is a tiny vps server having ppp device enabled. To check if it is enabled run (with sudo or as Read More »

vps in poland from biznes-host

Posted in linux, server on 2013/03/21
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Since long time I'm a happy customer of a polish company biznes-host. I'm using their vps since over a year (394 days) already. The service is fast, the machine performs well. The longest downtime (planned, announced) was 3 hours and 21 minutes. The overall uptime reads ~ 99.5%. Below the uptime history for this box: Read More »

nice server monitoring from nodeping.com

Posted in server on 2013/03/13
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Recently I've discover very nice monitoring service for my server. It is called nodeping (https://nodeping.com) offers 3 plans at the moment Starter, Business, and Provider. The smallest plans included 5 monitors (more can be bought additionally). It offers unlimited contacts, users and notifications and monitors the services at 1 minute intervals. They also offer free Read More »

vnstat - monitor your traffic usage

Posted in linux, server on 2013/01/27
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vnstat/vnstatd is a nice little daemon tool monitoring traffic usage of your server. Installing it on debian only requires to run: aptitude install vnstat To see the result just execute vnstat: vnstat -m venet0 / monthly month rx | tx | total | avg. rate ------------------------+-------------+-------------+--------------- Apr '12 1.73 GiB | 6.09 GiB | 7.81 Read More »

Uptimed - keep the history of your uptimes

Posted in linux, srvbox on 2013/01/12
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Uptime is a very useful information about the stability of your server. It shows you how long the machine has been running without a break. uptime 22:49:16 up 16:02, 1 user, load average: 0.00, 0.00, 0.00 Whenever the server is restarted the uptime is being resetted. If you would like to know the history of Read More »

openvz - access /proc/user_beancounters as normal user

Posted in linux, server on 2012/05/05
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/proc/user_beancounters shows the resources available to an openvz container. Unfortunately only root is having access to this file. In order to allow access also to normal users Doug Robbins (http://www.labradordata.ca/home/35) wrote a tiny C programm which can be setup to suid root. The code is available at http://www.labradordata.ca/downloads/beanc.c To install it you can either use Read More »