Configuring guest WLAN/Wifi access on the openwrt router

Posted in linux, server on 2014/05/04
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Every now and then I was being asked by family and/or friends visiting me if they can use my wifi @home. As I trust them I don't see a problem with that, but there are few issues with it: I don't want to give them my password My password is really long and thus hard Read More »

Ramnode - great vps company

Posted in linux, server on 2013/11/29
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EDIT12: Some time ago ramnode decided to stop offering coupon codes reducing the price of their product. Together with this announcement their upgraded all the plans to new specs. Since October 28, 2014 their running a new promo where while buying a new VPS you can get $5 credit to your account. Just use the Read More »

mysql-bin logs filling up diskspace

Posted in linux, server, srvbox on 2013/11/21
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In my last article I've documented howto to setup a master-master mysql replication. Though I've configured mysql to clean up the old binlogs, I've realized that such setup will not only consume a lot of diskspace, but also does not guarantee that only the unused binlogs will be removed. Mysql allows you to configure binlogs Read More »

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 »

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

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 ( 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 »