maxdb 7.6 uses /dev/random device

[Former Member]

i got some problem because maxdb 7.6 and higher uses random device. I have an apache+ php enviroment running on centos 4.4.

If i connect from php via odbc to maxdb, an apache thread will be generated that uses the random device. every new odbc connect generates a new /dev/random usage ...

--snip --

kernel 3661 sdb 5r CHR 1,8 572 /dev/random

kernel 3666 sdb 5r CHR 1,8 572 /dev/random

kernel 3666 sdb 24r CHR 1,9 574 /dev/urandom

httpd 27986 webuser 21r CHR 1,8 572 /dev/random

httpd 27986 webuser 22r CHR 1,8 572 /dev/random

httpd 27986 webuser 23r CHR 1,8 572 /dev/random

httpd 27986 webuser 24r CHR 1,8 572 /dev/random

httpd 27986 webuser 25r CHR 1,8 572 /dev/random

httpd 27986 webuser 26r CHR 1,8 572 /dev/random

httpd 27986 webuser 27r CHR 1,8 572 /dev/random

httpd 27986 webuser 28r CHR 1,8 572 /dev/random

httpd 27986 webuser 29r CHR 1,8 572 /dev/random

httpd 27986 webuser 30r CHR 1,8 572 /dev/random

httpd 27986 webuser 31r CHR 1,8 572 /dev/random

httpd 27986 webuser 32r CHR 1,8 572 /dev/random

httpd 27986 webuser 33r CHR 1,8 572 /dev/random

httpd 27986 webuser 34r CHR 1,8 572 /dev/random

httpd 27986 webuser 35r CHR 1,8 572 /dev/random

httpd 27986 webuser 36r CHR 1,8 572 /dev/random

httpd 27986 webuser 37r CHR 1,8 572 /dev/random

httpd 27986 webuser 38r CHR 1,8 572 /dev/random

httpd 27986 webuser 39r CHR 1,8 572 /dev/random

httpd 27986 webuser 40r CHR 1,8 572 /dev/random

httpd 27986 webuser 41r CHR 1,8 572 /dev/random

httpd 27986 webuser 42r CHR 1,8 572 /dev/random

httpd 27986 webuser 43r CHR 1,8 572 /dev/random

....

--snap --

I look around but do not find anything about it.

i switched back to maxdb 7.5 and there no random device will be used.

Does anyone know how to switch off the /dev/random usage in maxdb 7.6 ?

my uggly workaround: rm /dev/random

[henrik_hempelmann]

> i got some problem because maxdb 7.6 and higher uses

> random device.

> ....

> --snap --

>

> I look around but do not find anything about it.

>

> Does anyone know how to switch off the /dev/random

> usage in maxdb 7.6 ?

>

> my uggly workaround: rm /dev/random

Andreas,

the random device is used by the internal crypto libraries and there is currently no way to change the path or disable the usage of this device.

If you don't have enough entropy, you can link /dev/urandom to /dev/random

or "mknod -m 644 /dev/random c 1 8"

henrik