tech

i got my hands on INTEL SSDSA2M120G2GC disk. read performance was perfect but during writes it was throwing kernel errors left and right:

once in a while i press enter too early. end result of changing permissions on the whole file system can be quite bad.

few configuration files i use on highly-available active-standby clusters running under debian.

i’ve got seemingly simple php script running every night on one of my servers… on the same machine i started to experience nightly oom-killer. i’ve found out that adodb’s Execute statement can do something completely else than you would expect from it – it loads whole result into memory rather than going row-by-row.

from this site. and it seems to be working. Go to MenuTools -> Error Console Paste the following in the “Code:” text-box: Press Enter or click Evaluate. The database will thence be vacuumed immediately.

i’m compressing quite a lot of data on the fly to save storage… until now i’ve been quite sure one cannot control compression level with oracle java’s GZIPOutputStream but apparently i was wrong.

it’s been a while since i’ve set up any [non]caching proxy servers. i’ve mostly dealt with reverse proxies, apache2 in 90% of cases, nginx – in few. below few copy&paste configs.

sometimes my backups are not consistent. rsync / samba to blame?

my old linksys router died violently – power led shines, but links on all lan ports were going down after few seconds from bootup. i bought replacement dlink dir-600 and decided to try dd-wrt firmware on it. it went better than expected!.

since a while Sphinx search can be queried not only by their own non-standard interface but also using regular mysql client. they call this feature SphinxQL.

i’ve been happy user of ESVA / global-domination [virtual in my case] appliance for mail and antivirus filtering. unfortunately it seems that was one-man project and it’s pretty much dead by now. official website – http://www.global-domination.org/ no longer works since ~ march 2010.

[scratchpad] read this. debian’s bind9 works just fine. for windows 2003 server dnscmd /Config /EnableEDnsProbes 1 based on this. i got an interesting answer here

… comes but not via main entrance.

something i’ve mailed my dell sales-rep…

i’ve got new hdd delivered. it’ll be used as one of rotated disks for offline backup storage. it is WDC WD15EARS-00Z5B1 – WD Caviar Green 1.5 TB and is one of first disks with 4kB physical sectors instead of 512B ones. i’ve read at some places about performance impact of miss-aligned linux partitions for write ... Read More

i’ve been using nagios to monitor my infrastructure for long time. in most cases it’s sending just e-mails. at ecowin/reuters i also had it connected with sms gateway. Siements TC35 connected via serial cable to linux box served us very well. i used debian’s scmxx to send messages. i’ve been thinking recently about using SIP ... Read More

i had to install system [ Debian that is ] on HP DL120G5 server.