Converting crt to PEM
Took two steps:
openssl x509 -in input.crt -out input.der -outform DER
openssl x509 -in input.der -inform DER -out output.pem -outform PEM
Recently I have installed several Redhat systems on IA64 platforms. Since it required only slight adjustments, and since there were two sets of systems, RHEL3 Update2 and RHEL4 Update3, I have decided to use Kickstart for both, each with his own ks.cfg file. For lack of any other explanation at the moment, I can only…
I encountered an intriguing issue recently after replacing my motherboard. Some block devices underwent a change in their order, causing /dev/sda to appear as /dev/sdy due to a modification in the PCI-e enumeration. This change, though seemingly insignificant, led to an unexpected consequence. Since the disk was subject to a specific mdadm filter, its altered…
dm-multipath is a great tool. Its abilities were proven to me on many occasions, and I’m sure I’m not the only one. NetApp, for example, use it. HP use it as well (a slightly modified version, and still), and it works. A problem I have encountered is as follow – if a single path fails,…
Sysstat package, for me, is a must on any Linux machine I get to deal with. It allows for easy collection of performance data, and it allows easy postmortem of past (short past, anyhow) problems. For me, the only change from RHEL4 defaults is by setting the time interval to one minute, in stead of…
I was required to write a small listener. This listener doesn’t have to do anything fancy – it has to process input from a network source (over TCP) and shove it into a file with random name. The quick and dirty solution is to use netcat (nc). A short command such as this would do…
Setting up an Oracle ASM disks is rather simple, and the procedure can be easily obtained from here, for example. This is nice and pretty, and works well for most environments. EMC PowerPath creates meta devices which utilize the underlying paths, as mod_scsi sees them in Linux, without hiding them (unlike IBM’s RDAC, for example)….