Unixtips | Locawebers

Configuring Log.IO server to listen just on localhost…

21 out
2012 por Marcelo Leal em General,Javascript,Linux,logs,node.js,Opensolaris,Tecnologia,tips,Ubuntu,Unixtips Nenhum comentário

I could not find a built-in way of doing so, then I did need to patch some files, and will write here maybe help others and is a good way to remember myself… The harvest.conf file has the “port” and “server” variables so y...

FISL 13

18 jun
2012 por Marcelo Leal em fisl,General,Linux,Opensolaris,OpenSource,Poaosug,storage,Tecnologia,Ubuntu,Unixtips,Zfs Nenhum comentário

ASCII Bar Graph using Ruby, now on github…

23 fev
2012 por Marcelo Leal em General,Linux,Opensolaris,Unixtips Nenhum comentário

Hi there… just a quick post (and I will reuse the README file I wrote ;-): In 2007, Neelakanth Nadgir did post a script on his blog to display ASCII Bar graphs using the Ruby language. To have a quick way to plot some numbers on terminal to under...

ZFS Internals (part #11)

29 ago
2011 por Marcelo Leal em General,Opensolaris,storage,Tecnologia,Unixtips,Zfs Nenhum comentário

PLEASE BE AWARE THAT ANY INFORMATION YOU MAY FIND HERE MAY BE INACCURATE, AND COULD INCLUDE TECHNICAL INACCURACIES, TYPOGRAPHICAL ERRORS, AND EVEN SPELLING ERRORS. From the MANUAL page: The zdb command is used by support engineers to diagnose failures ...

I talk too much…

11 mai
2011 por Marcelo Leal em Avs,Iscsi,Linux,ohac,Opensolaris,openstorage,oracle,storage,Suncluster,Unixtips,Zfs Nenhum comentário

Ok, that was funny… well, not really, because i did loose a lot of time on it. I have no experience with ASM (Automatic Storage Management) by Oracle, and while a system administrator, i did manage the oracle volumes as filesystems. The raw devic...

The MTTR is going up, do you know?

07 dez
2010 por Marcelo Leal em Opensolaris,storage,Tecnologia,Unixtips,Zfs Nenhum comentário

Sometime ago i did write about cache, and the little (or none) difference between poor performance and availability. I still think cache is the solution for all problems, and can be the root of all evil too. Today i was reading about the problems with ...

Intel Specification Update

27 nov
2010 por Marcelo Leal em 82546,bug,chipset,Desktop,errata,ethernet,General,intel,Linux,Opensolaris,Tecnologia,Unixtips Nenhum comentário

In October 1, 2010, Intel released a document that describes design defects, known errors, and all the stuff that can make a sysadmin’s life a pain. It was an specification update for the Intel 82546GB Gigabit Ethernet Controller (e1000 driver fo...

NFS, TCP, retrans and timeo

22 nov
2010 por Marcelo Leal em Linux,Nfs,Opensolaris,retrans,solaris,storage,tcp,Tecnologia,timeo,udp,Unixtips Nenhum comentário

I think there is a misunderstanding regarding the protocols and NFS options while using it over TCP. As the NFS is an old protocol, and used to UDP, when the implementations did change the default transport to TCP, the features from one were mixed to t...

Solaris 11

17 nov
2010 por Marcelo Leal em General,Opensolaris,operatingsystem,oracle,Poaosug,solaris-11,storage,Tecnologia,Unixtips,virtualization,Zfs Nenhum comentário

Hello there… As many of you already know, a new version of Solaris Operating System is available: Solaris 11 Express. Seems like the Solaris 11 will be released next year, but i really don’t know if that is the case neither the diff between...

Sorry…

09 nov
2010 por Marcelo Leal em General,Nfs,Opensolaris,storage,Tecnologia,Unixtips Nenhum comentário

1 – But limits are things that we need to respect in life; 2 – If you have U$10K and do not know how to handle it, U$10M is not the answer for you. Because one cent is overflow in both cases; 3 – That is the same for computer resource...