Bookmarks for 4 apr 2011 through 9 apr 2011

These are my links for 4 apr 2011 through 9 apr 2011:

  • 500 Internal Server Error – 500 Internal Server Error
  • www.vanheusden.com – optimizing for MySQL – On this page I collect tips & tricks on how to optimize your system for running MySQL. Some tips are in general usefull for optimizing your system.
  • BSDCertification.org – The BSD Certification Group Inc. is a non-profit organization committed to creating and maintaining a global certification standard for system administration on BSD based operating systems[…]

Bookmarks for 28 mar 2011 through 2 apr 2011

These are my links for 28 mar 2011 through 2 apr 2011:

Bookmarks for 27 mar 2011 from 02:00 to 21:07

These are my links for 27 mar 2011 from 02:00 to 21:07:

  • rackerhacker/MySQLTuner-perl – GitHub – MySQLTuner is a script written in Perl that allows you to review a MySQL installation quickly and make adjustments to increase performance and stability.  The current configuration variables and status data is retrieved and presented in a brief format along with some basic performance suggestions.
  • Sundry MySQL Scripts and Docs – This script takes information from "SHOW STATUS LIKE…" and "SHOW VARIABLES LIKE…" to produce sane recomendations for tuning server variables. It is compatable with all versions of MySQL 3.23 and higher (including 5.1)
  • 500 Internal Server Error – 500 Internal Server Error

Bookmarks for 9 mar 2011 through 14 mar 2011

These are my links for 9 mar 2011 through 14 mar 2011:

  • Photivo – Photivo is a free and open source photo processor. It handles your RAW files as well as your bitmap files in a non-destructive 16 bit processing pipe with gimp workflow integration and batch mode.
  • 500 Internal Server Error – 500 Internal Server Error
  • Viewer for Microsoft Project files – MOOS Project Viewer is a viewer for Microsoft® Project that allows you to open, view in a dynamic way and print any Microsoft® Project file. It is running on any Java enabled platform including Windows®, Mac OS X and Linux. There are many viewers for Microsoft® Project on the market, some freeware and others commercial. MOOS Project Viewer is the best viewer choice for Microsoft® Project in terms of features/price. But do not take our words for it. Test it for yourself!

Bookmarks for 3 mar 2011 through 9 mar 2011

These are my links for 3 mar 2011 through 9 mar 2011:

  • Viewer for Microsoft Project files – MOOS Project Viewer is a viewer for Microsoft® Project that allows you to open, view in a dynamic way and print any Microsoft® Project file. It is running on any Java enabled platform including Windows®, Mac OS X and Linux. There are many viewers for Microsoft® Project on the market, some freeware and others commercial. MOOS Project Viewer is the best viewer choice for Microsoft® Project in terms of features/price. But do not take our words for it. Test it for yourself!
  • Welcome to The TCP/IP Guide! – The TCP/IP Guide is a reference resource on the TCP/IP protocol suite that was designed to be not only comprehensive, but comprehensible. Organized using a logical, hierarchical structure, The TCP/IP Guide uses a personal, easy-going writing style that lets anyone understand the technologies that run the Internet. The Guide explains dozens of protocols and technologies in over 1,500 pages. It includes full coverage of PPP, ARP, IP, IPv6, IP NAT, IPSec, Mobile IP, ICMP, RIP, BGP, TCP, UDP, DNS, DHCP, SNMP, FTP, SMTP, NNTP, HTTP, Telnet and much more.
  • traffic shaping con linux – Per la serie belli e utili, il post di Spippolazione:<br />
    […]per esempio, su un proxy squid con indirizzo ip 192.168.1.1 limitare a 3 mega in up ed in down la banda. Provare per credere[…]

Bookmarks for 28 feb 2011 through 3 mar 2011

These are my links for 28 feb 2011 through 3 mar 2011:

  • Installing Oracle11 on Debian – The main goal is to get the Oracle installer to run so you can install Oracle successfully. This application has to run within X windows. We will use vnc for that, this is not necessary, but you may (often) find you have to install Oracle remotely. And using something like vnc sure beats spending time in a noisy server room[…]
  • 500 Internal Server Error – 500 Internal Server Error
  • Openfiler 2.3 Active/Passive Cluster (heartbeat,DRBD) With … – […] Openfiler is a Linux based NAS/SAN application which can deliver storage over nfs/smb/iscsi and ftp. It has a web interface over that you can control these services. The howto is based on the Howto from Kyle Gililland. A lot of thanks to him for this.<br />
    The cluster we build will consist of two nodes replicating each other and taking over services and storage in case of emergency. Furthermore we have an Offsite Replication Server, which ideally stands in a physically different position and replicates the configurations/storage from which ever node is active. In case of emergency this Offsite Replication Server can be used to restore the cluster and to deliver the services […]

Bookmarks for 23 feb 2011 through 28 feb 2011

These are my links for 23 feb 2011 through 28 feb 2011:

  • Openfiler 2.3 Active/Passive Cluster (heartbeat,DRBD) With … – […] Openfiler is a Linux based NAS/SAN application which can deliver storage over nfs/smb/iscsi and ftp. It has a web interface over that you can control these services. The howto is based on the Howto from Kyle Gililland. A lot of thanks to him for this.<br />
    The cluster we build will consist of two nodes replicating each other and taking over services and storage in case of emergency. Furthermore we have an Offsite Replication Server, which ideally stands in a physically different position and replicates the configurations/storage from which ever node is active. In case of emergency this Offsite Replication Server can be used to restore the cluster and to deliver the services […]
  • Using m4 with Nagios: Advanced Ideas – Nagios configuration has been traditionally cumbersome and extensive; there are a lot of things to configure. The addition of templating some time ago helped, but not entirely. A configuration element such as a server or a switch can take up a huge amount of configuration and be quite repetitive, too.Using m4 can alleviate all of these problems. When combined with GNU Make and Nagios configuration directories, changing the configuration can be done quite simply and easily.
  • Random.org – RANDOM.ORG offers true random numbers to anyone on the Internet. The randomness comes from atmospheric noise, which for many purposes is better than the pseudo-random number algorithms typically used in computer programs. People use RANDOM.ORG for holding drawings, lotteries and sweepstakes, to drive games and gambling sites, for scientific applications and for art and music. The service has existed since 1998 and was built and is being operated by Mads Haahr of the School of Computer Science and Statistics at Trinity College, Dublin in Ireland.<br />
    <br />
    [ via http://schiseta.com ]

La MicroSoft-izzazione di IBM

Questa è una di quelle storie che fa ridere solo il sottoscritto ma mi pareva ugualmente carino condividere.

Da qualche giorno l’installazione del TSM di un cliente mi da parecchi pensieri, Tivoli è Il sistema di backup di classe enterprise e tendenzialmente vive di vita propria, basta dargli in pasto qualche cassetta ogni tanto, un po’ come fosse una pianta grassa.

Capita però che, un po’ per noia, un po’ per stanchezza, a TSM passi la voglia di lavorare per bene e cominci a mancare un backup qui e uno la. Fortunatamente parliamo comunque di un Signor prodotto che produce quintalate di log compresivi di codici errori univoci e descrizioni altisonanti.

Attraverso l’interpretazione dei codici errori, l’aruspice di turno e cioè me, deriva il passato e il futuro dello sfortunato backup. L’interpretazione dei suddetti errori passa attraverso la “Client Message List“, la porta verso un più consapevole troubleshooting.

Ad essere fortunati, in pochi minuti si torna operativi più gagliardi che mai! Ad essere sfortunati si infilano 3 codici tipo:


ANS1316E
: The server does not have enough recovery log space to continue the current operation: IBM dice che è una cosa temporanea e di non dargli peso ma se, come in questo caso son 3 giorni, di chiamare l’amministratore di sistema che per un caso barbino del destino, sono io.

ANR2579E: Schedule schedule name in domain domain name for node node name failed (return code return code): in questo caso si consiglia di visualizzare il log degli errori presente sul client che ha fallito il backup. Va da sé che nel log, non c’è scritto nulla di utile, al più un altro codice di errore che rimanda fatalmente a questo creando una spirale di violenza che genera altra violenza, sul povero amministratore (sempre io).
ANR4532W: The total DB used in DB space is log space used megabytes, and the total space available in the DB space is log space available megabytes. The ratio is log file system used ratio: questo secondo me è il migliore del terzetto! La spiegazione dell’errore ripete sostanzialmente il messaggio di errore, non si sa qual è il comportamento del server in questo caso e non è presente nessuna azione possibile.

Andando a cercare un senso a tutto ciò vien fuori che forse c’è tra le altre cose un errore nella versione in uso di TSM per cui, stanco com’è, non rilegge certi parametri e il “workaround” proposto è quello di fare una proporzione, una di quelle che si imparava a fare alle elementari e, con il valore ottenuto ingannare il povero TSM.

Mi ricorda tanto quella volta che un collega ha messo l’ora sbagliata su un domain controller e 24 suoi fratellini, han smesso di replicarsi per 3 giorni.