Cauwenbergh.be weblog

why M$ can’t make things easy…

By Robin | oktober 16, 2007

After 2 weeks trying outlook MS has made my life not as easy as they think they do…

My imapmailbox is running fine for some months by now, but when changing my thunderbird for outlook because i need a calendar, login and recieving mail is perfect, so far so good, but after one week the system could not send any mail to addresses where the domainname is not mentioned in rcphosts, this is not funny, you can not add every domain you want to send mail to i think… So i’m searching but not finding the solution (even on swsoft.com the company behind Plesk) they do not know what is happening, many posts no solution on the discussionboards, so in my settings in outlook it says use the same login infomation as for recieving mails, after doing this manual everything went fine, thank you mister Gates i’m thinking again to switch to thunderbird or something simular that has good thing on board for mailing!

Topics: Internet - SEO - Money | No Comments »

Plesk SQL Injection vulnerability

By Robin | september 26, 2007

Today we have solved this bug on our productionserver. You can read how to solve this on:

http://kb.swsoft.com/en/2169

Topics: Linux | No Comments »

Working at the nerves from your boss

By Robin | augustus 28, 2007

This is really good, don’t know if i could have so much fun if they will trick me :p

[youtube]http://www.youtube.com/watch?v=q0XdthbOkMU[/youtube]

Topics: No Category | No Comments »

Disable ping on linux

By Robin | juli 19, 2007

Almost all people starting with linux want to know after a while how to stop ping to prevent floods, well here is the solutions:

echo 1 >/proc/sys/net/ipv4/icmp_echo_ignore_all

Only one thing left to do, you also want to get this after a reboot, so put in /etc/sysctl.conf.:

net.ipv4.conf.icmp_echo_ignore_all = 1

Topics: Linux | No Comments »

Fedora Core 2 repository

By Robin | juli 8, 2007

Today i found that the mirrors in usa not working for some reason on a fedora core 2 system of a customer, so i searched and found a newone and placed in /etc/yum.conf:

[base]
name=Fedora Core $releasever - $basearch - Base
baseurl=ftp://alviss.et.tudelft.nl/pub/fedora/core/$releasever/$basearch/os
#baseurl=http://download.fedora.redhat.com/pub/fedora/linux/core/$releasever/$basearch/os/

[updates-released]
name=Fedora Core $releasever – $basearch – Released Updates
baseurl=ftp://alviss.et.tudelft.nl/pub/fedora/core/updates/$releasever/$basearch
#baseurl=http://download.fedora.redhat.com/pub/fedora/linux/core/updates/$releasever/$basearch/
Hopefull someone could use this!

Topics: Linux | No Comments »

Backup mysql with many tables >1000

By Robin | juli 7, 2007

When your mysql has many tables you could get an error of LOCK TABLES to solve this you can try two things:

1) use the option –skip-lock-tables in mysqldump

2) edit /etc/my.cfg and add following line under category [mysqld]: open_files_limit=16384

After 2 restart mysql!

Topics: Linux | No Comments »

Could not bind 0.0.0.0:443

By Robin | juli 5, 2007

login su in server

#fuser 443/tcp
443/tcp: xxxx yyyy zzzz <- proceses using 443

#kill -9 xxxx yyyy xxxx
#service httpd start

Topics: Linux | No Comments »

Final: backupserver is running!

By Robin | juni 29, 2007

supermicro 2U S826The beginning was not so good, 3-ware card was not recognized by CentOS 5 neither 4! So after searching a couple of hours and found the right device drivers we could start the install! So far so good, we have a system with 6 x SATA 320GB in raid 5 so we have 1,45TB of diskspace available for backup on six disks! The system: a supermicro server with 12 bays for hardisks…

Now installing quota and ftp so the system could work as meant!

Topics: Dutchzone, Linux, No Category | No Comments »

Thinking Debian or CentOS?

By Robin | juni 24, 2007

centosAt this moment there are some huge changes waiting by Dutchzone, our Windowsserver is running and tested so one of the new things is our new windowshostingproject, not my idea, but sometimes you have to let it come over you :ddebian

An other great change will be the migration of our new linuxserver, so we will get 2GB of RAM (it could be 4GB later!), for the raid we have choose to take a 3ware card so our CPU is not to much loaded! On this linuxserver we sure setup Plesk 8.x (swsoft normal bring 8.2 out later this summer 2007) the only thing i’m not sure of is take debian or CentOS, debian is a high supported platform, on the other hand CentOS is a RHEL-alike and more stable, after years of Fedora one thing is sure, Fedora is not good for a productionserver because it give many problems updating thing outside of Plesk, Fedora OS is only supported for 2 years and CentOS/debian is supported for 5 years! So after this all at this moment it would be CentOS for some reasons: other servers i manage for a company mostly running CentOS, so that system i know the best, other thing is Fedora and CentOS is not such a difference! So i think CentOS is the right solution!

New is our brand new backupsystem, a Supermicro 2U server with 8 disks (3,2TB), 2 x Gbit NIC, after 4 years working and taking backup from one server to the other and visa versa we found it was time to get a sepperated system taking care of our backups and most of all for performance it will be a relieve! Customers will get a new advantage, they can choose to get their backups on their own space (same server and counted as used webspace, but not save we think!) or pay some EUR for external backup (the amount to pay is less if you can think what could happen when a server is failling, so starting from 10 EUR/year we think it is not much for your data!

Almost forgot, never think someone else did solve a problem he could solve himselve! Yesterday a friend of mine had an e-mailproblem so huge he gave up to search, but if he had just thinking twice, sending mail from server A to server B was not working because he tested the domain which was on server B now the day before on server A and did not removing it! So after two hours of searching with two persons we found the solution :p Remove the domain from server A!!! So if you report a problem give as much information you know from the last days… Maybe you get the solution yourselve at that moment :p

PS: my birthday on 16th of june was perfect, yeah allright i’m 30 years old now but kicking and alive :d so 30 is a strange fealing, the number but for all the other things i’m feeling me as good then i was 29 :d My English is still bad, i’m still having fun working in *nix systems, i’m still happy with wife and kids! So let’s go and take it as it comes for an other year!

Topics: Dutchzone, Linux | No Comments »

Backup and dutchzone.eu

By Robin | juni 4, 2007

After years everything went like it has to go, so since a few days dutchzone.eu is registred at my name, an old supplier had registred the name and would not give it to us, but since a few days it is where it belong, by Dutchzone!

An other thing i have solved today is the backupsystem in Plesk 7.5 Reloaded, this was so bad nobody could use it, after a self test with a domain (this one) with 7,6 GB we could tell you everything works like it has to work!

Topics: Dutchzone, Linux | No Comments »

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