Konstantin Antselovich

Skiplist recovery – Science IT [recover Cyrus IMAP <mailbox>.seen database]

Thursday, March 5th, 2009

This note explains how you can recover corrupted skiplist databases used by cyrus to keep track of the mailbox status (eg READ/UNREAD email).

Posted in cyrus, Linux, mail, sysadmin, system | Comments Off | permalink

Lazy Linux: 10 essential tricks for admins

Wednesday, March 4th, 2009

really good article. If you did not find at least 1 useful trick in this article you must be really cool (like Linus himself)

Posted in for:collidr, Linux, sysadmin, tips | Comments Off | permalink

GlusterFS – GlusterDocumentation

Monday, February 23rd, 2009

fully-distributed network file system (fully = no separate meta-data servers ). Supports data redundancy (data can be stripped/mirrored across several nodes), supposed to be high performance. supports encryption and can be embedded in app server (i….

Posted in cluster, distributed, filesystem, for:collidr, fs, Linux, opensource, scalability, storage, sysadmin | Comments Off | permalink

Providing Active Directory authentication via Kerberos protocol in Apache

Tuesday, February 10th, 2009

Apache authentication against AD (via Kerberos). Really easy to do, but make sure you put your kerberos real all in UPPER CASE, i.e. MYDOMAIN.COM. If you are using something like MYDOMIAN, then put it into config as MYDOMAIN.LOCAL

Posted in active, activedirectory, ad, apache, authentication, directory, for:collidr, howto, kerberos, krb5, Linux, Microsoft, Security, shortcut:apache, windows | Comments Off | permalink

[RUS] Юникс и другие » Blog Archive » Построение отказоустойчивого балансировщика нагрузки на базе Perlbal/Heartbeat

Thursday, January 29th, 2009

[RUSSIAN] How to configure Perlball + Heartbeat as HA load balancer with session support for app servers

Posted in apache, for:collidr, ha, howto, ip, Linux, loadbalancing, master, perlball, proxy, server, session, shared, shortcut:linux, slave, sysadmin, web | Comments Off | permalink

[technet.microsoft.com] Interop: Authenticate Linux Clients with Active Directory

Friday, November 14th, 2008

tehcnet article on providing authentication against AD using samba/winbind

Posted in active_directory, ad, authentication, for:charlesnw, for:collidr, Linux, pam, samba, sysadmin, windows | Comments Off | permalink

Installing source package with YUM

Friday, November 14th, 2008

in the essence it is:

Posted in for:charlesnw, Linux, packaing, rpm, sysadmin, yum | Comments Off | permalink

The Sean Blog : Linux on Hyper-V [how to run linux under MS Hyper-V]

Friday, November 14th, 2008

Blog posts shows some screenshot of various linux distros running under MS new virtualization solution, similar to XEN. Hyper-V used special network device (not sure about block device, i.e. disk ), so linux needs a

Posted in 2008, for:charlesnw, for:collidr, hyper-v, Linux, Microsoft, virtualization, windows2008 | Comments Off | permalink