1) I work with bigdate for a living, use lots of neat software, SAS, SQL Server, etc. I know how to get my data and such, analyze it, etc...
2) I use UNIX at work (Solaris mostly) and can easily navigate around Unix and get the job done, vi and sas -nodms are about my fav, and some python and shells here there).
3) What I am not is a Unix System Admin. Sure I get the OS, and why it is so great, i.e. / is the bees knees, /home/me, etc....
4) So I have now joined the club! I have three Linux machines at home all connected and talking and everything is great! I even installed Hadoop (well specifically: hadoop-1.2.1 at /usr/local/hadoop) by getting it all untared and such and setup and nice and pretty by doing this:
Code:
sudo mv hadoop-1.2.0/ hadoop
5) So life is great! My main node and slaves are all happy! Woohoo!
6) But now change comes, Apache releases stable release hadoop-2.2.0 three days ago!?
7) NOW WHAT?!
8) I cant download the new version, and merely do this while here /usr/local:
Code:
sudo mv hadoop-2.2.0/ hadoop
I am sure the sky would fall, baby dolphins would die and other ill effects of such awful OS understanding.
9) So I come to you all for a very basic, best practice way of doing upgrades?
10) I think I "just" follow the upgrade guide at apache re updating the Hadoop OS, but you know, there really isn't something there that says, "Well buddy, just setup /usr/local/hadoop-2.2.0 then move all the config files and whatnot to the old install (/usr/local/hadoop) to the new one (/usr/local/hadoop-2.2.0) and when you are comfortable that it's all running swell, after following our guide, well, just DELETE the whole folder: /usr/local/hadoop and then do this:
Code:
sudo mv hadoop-2.2.0/ hadoop
and life will be happily ever after lived......
You folks get what I mean?
I look at the update/install guide and think that a fundamental OS/software update process is not connecting with me. I know this isn't Windows and there is no "Update Hadoop 1.2.0 to Hadopp 2.2.0" button. But I just am a little gray on the lifecycle of Unix, I know that I have to install a full new binary at: /usr/local/hadoop-2.2.0, but I just don't know how to clean up all the mess when I am done getting the clusters all set up. I know how to do that, I just don't get how best practice is to update software???
Any intel?
I have these Hadoop clusters at home to LEARN on, if I do something wrong, oh well, just fix it all and start over. I just got sooo far and now I am feeling a little lost on how to manage my Linux clusters with updates correctly. I just want to learn, this isn't for work or anything.
Thanks in advance for your help!
/*have a great weekend!!*/
I am new to using nawk. When I put the following line in script file test1.awk
I get the results:
{ print NR, length($0),NF}
>nawk -f test1.awk head.txt
1 63 5
2 2622 188
3 2166 155
4 3192 228
5 2679 192
.....
but if I modify the test1.awk file to look like this:
BEGIN {FS = ","}... (2 Replies)
I need a script that gets the output of softwareupdate -al on each machine (the list of available updates) and reports how many updates are needed in total by all the machines on the network, and the results to 4 different recipients.
i.e.
total patches required = 12
hostname1 =4 patch(es)... (1 Reply)
Hi,
In SUSE linux, it looks like that I can update the package using YAST or install the package from source. So, which way works better? Also, if i install the package of new version. Do i need to remove/delete the old version package, or I just need to change my environments and keep the old... (0 Replies)
Discussion started by: jianma
0 Replies
LEARN ABOUT NETBSD
mfi
MFI(4) BSD Kernel Interfaces Manual MFI(4)NAME
mfi -- LSI Logic & Dell MegaRAID SAS RAID controller
SYNOPSIS
mfi* at pci? dev ? function ?
DESCRIPTION
The mfi driver provides support for the MegaRAID SAS family of RAID controllers, including:
- Dell PERC 5/e, PERC 5/i, PERC 6/e, PERC 6/i
- Intel RAID Controller SRCSAS18E, SRCSAS144E
- LSI Logic MegaRAID SAS 8208ELP, MegaRAID SAS 8208XLP, MegaRAID SAS 8300XLP, MegaRAID SAS 8308ELP, MegaRAID SAS 8344ELP, MegaRAID
SAS 8408E, MegaRAID SAS 8480E, MegaRAID SAS 8708ELP, MegaRAID SAS 8888ELP, MegaRAID SAS 8880EM2, MegaRAID SAS 9260-8i
- IBM ServeRAID M1015, ServeRAID M5014
These controllers support RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, RAID 50 and RAID 60 using either SAS or SATA II drives.
Although the controllers are actual RAID controllers, the driver makes them look just like SCSI controllers. All RAID configuration is done
through the controllers' BIOSes.
mfi supports monitoring of the logical disks in the controller through the bioctl(8) and envstat(8) commands.
EVENTS
The mfi driver is able to send events to powerd(8) if a logical drive in the controller is not online. The state-changed event will be sent
to the /etc/powerd/scripts/sensor_drive script when such condition happens.
SEE ALSO intro(4), pci(4), scsi(4), sd(4), bioctl(8), envstat(8), powerd(8)HISTORY
The mfi driver first appeared in NetBSD 4.0.
BSD March 22, 2012 BSD
10-19-2013
