30/04/2016

SSD galore!

I don’t know why, but I always had a bad feeling about Samsung products, every time I bought or tried one of them I always had  so many problems…

In december 2014 I gave to my brother a brand new Samsung 840 Evo SSD for his old MacBook Pro.
The original MacBook Pro hard drive was a crap, 5400rpm and really really slow, with this SSD it would take off like a rocket!

Everything was ok (except the stupid Apple policy regarding trim on ssd…) until the last february when the system became unstable, after some check I found the problem was the SSD.
I went back to the shop to start an RMA procedure, and finally yesterday (after almost two months!) they sent me a brand new 850 Evo with 3D V-NAND.

Let’s see how it works compared to my good old Crucial M4 (which is 4 years and 3 months old!).

This is the Crucial M4, keep in mind that on this SSD I run the OS (Windows 10 Pro) my software and games (Far Cry 4 and Eve Online atm),  I did nothing to preserve it’s lifetime and performance and it’s 75% full.

CrystalDisk_CrucialM4

as-ssd-bench M4-CT128M4SSD2 29.04.2016 22.29.11

This is the new Samsung 850 Evo with 3D V-NAND (clean and absolutely empty).

CrystalDisk_850EVO as-ssd-bench Samsung SSD 850 29.04.2016 22.20.38

The difference on write test is HUGE, access time is also impressive!
To be honest I did not expect these results from my old Crucial M4, it runs very well also after so many years and so many writings on his back, excellent product!

Let’s see if this new SSD will defeat my Samsung curse! ;)

22/04/2016

Time to upgrade

I can’t tolerate these Out Of Memory errors from the latest Call of Duty!
I can’t tolerate the thrashing each time I test something heavy on vmware!

Time to do some upgrade ad switch to 16 gigs of shiny new Corsair RAM for my gaming/testing platform!

ram1

ram2

18/04/2016

A quick update

Well, time has passed since the last update on this blog, it’s time to do a quick recap on some of my new year’s goals.

First of all I archived one of the most important and desired goals: swimming!
During these first 3 and a half months I went swimming almost two times a week, sometimes three, starting with 20 pools at low pace and raising up to the actual 40 pools in 40-45′; as I expected each time I go swimming I feel better and better, actually it’s the only thing makes me feel really good and the only weapon I have against my terrible working stress…

nuoto1

Talking about work I can’t deny we have huge emergencies during the last month, as I predicted (I repeat the same thing for years…) we had great problems on our biggest customer with some stupid custom applications deployed on a huge WebSphere Portal cluster.
Remember the KISS model? My company did the exact opposite, this application produced huge out of memory problems on the Portal jvm, I sent logs and begged developers to fix the huge amount of exceptions we collected but nothing changed  since the problem went really crytical; at the end they fixed the exceptions and made changes to the code and all returned to work normally.

Remember: if you are working on some big enterprise software meatball like WebSphere Portal DO NOT deploy custom applications on that product unless you are ABSOLUTELY sure of their quality!
Use some easy Tomcat or Jboss instance, hundreds of them if you need to scale out for a big workload, you will live better, spent an infinitesimal part of money and will get a better result.

And what about Eve?
Well I finally get a second account, I used the buddy program and made a brand new cyno/scout alt and I’m skilling for the biggest and most ambitious project since I started play: two jumpfreighter pilots!
Yes, it’s not a typo, I need two JF pilots for take my future Rhea in null space and also in hi-sec, so I need a second JF pilot in npc corp to fly safe and now lose this huge ship in some stupid war brawl…
Look at that beauty, isn’t it gorgeous?

Rhea4

30/01/2016

Vmware ESXi Embedded Host Client

I know there are many good hypervisors, some of them are free and are full of advanced features (someone say oVirt?) but if you want to work into virtualization you can’t ignore Vmware.

Don’t get me wrong, I like Vmware products and I use them every day on servers, on my lab workstation and also on my old duty laptop, but sometimes customers tend to be too much conservative and sticked to it.
For example I found many people who prefer to use free Vmware ESXi (without vcenter, vmotion or svmotion) insted other solutions (free or low cost) with all the advanced features that any server hypervisor must have.

One of the most evident limitations of the free ESXi is the client which require a Windows OS, fortunately there’s a wonderful free solution for that: ESXi Embedded Host Client.

The installation is really easy, first of all you must download the installation package (esxui_signed.vib) from the official site and copy on the ESXi host (you can use the datastore browser or copy via scp).
After that you must access ESXi using ssh protocol, and launch “esxcli software vib install” command

esxi01

That’s all, now you can open your browser to url https://youresxiserver/ui and…

esxi02

What?!?!?
Keep calm, if you’re using ESXi 5.5 prior to update 2 there are some known issues, this is one of them.
To solve it we must edit  /etc/vmware/rhttpproxy/endpoints.conf, but the file is locked (operation not permitted error), so we must copy it to a temporary location (for example /tmp), edit it and copy on the original path again.

esxi03

The only change you must to is to comment the line starting with /ui putting a # at the beginning (force write on exit with :x! vi command)

esxi04

Now copy the edited file into its original path with “cp /tmp/endpoints.conf /etc/vmware/rhttpproxy/endpoints.conf” and restart rhttpproxy daemon with “/etc/init.d/rhttpproxy restart”

esxi05

Now try to browse https://youresxiserver/ui/ url (don’t forget the trailing /, another bug in ESXi 5.5U2 and earlier versions) and…

esxi06

esxi07

Mission accomplished!

11/01/2016

Compress logs by date

Sometimes it happens to find a service which rotates logs but don’t rename them using an easy date format (for example logYYYYMMDD.log), that’s horrible if you have to archive those logs :\

Here is a simple bash script I use to compress them based file modification date, check comments for adapt it to your log names.

download: logmonth_1.0.sh
md5sum: 4b587eb3c2d9ac413d81a0bdc055c6cf

 

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