What I’ve Learned So Far??

This is a question that’s been outstanding for almost 3 weeks now (maybe 4) as I’ve put various coloured flags to indicate this as an outstanding item that begs for a reply. It really makes me ponder.. What exposures I’ve gained when I was posted for 2yrs in DR? Surely enough, I can tell about the framework, governance, policies, how it’s implemented, arranged and performed in a short few sentences as a summary, but this wasn’t really the answer that I wanted to reply…

It’s more complicated and delicate as it touches both hard and soft knowledge and I wanted it to be answered kinda beyond boundaries… But I don’t really know how to.. I’m not good at rewinding memories on what I’ve done so far and I think lots of things known are in fact intangible and hard to explain.. amirite or just prolly finding myself an excuse?.. Idk..

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crisisophobia?

Damn my stocks are all bloody damn red.. the world fears Europe’s debt crisis could spiral out of control… and worries over China’s economy.. I’ve told my mom to cut losses JIC, but she kept persistent that market will bounce up… : /

I couldn’t care less… Btw I just had a farewell dinner with my other indo colleague frm network team.. he’s quite stressed over his current assignment and decided to quit and joined nearby co.. I joined network quite a few mths back and can sense a huge difference in terms of work pace as well.. From the one chasing ppl become the one being chased by ppl… Hmm…

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Cacti Deployment @ OpenSUSE

my successful cacti deployment to OpenSUSE marks my first journey to become an network admin.. cacti is a quite a useful tool, designed to be a complete graphing solution based on the RRDTool’s framework (based on Oetiker’s MRTG), its goal is to make my job easier by taking care of all the necessary details necessary to create meaningful graphs..

and yet graph alone is insufficient, it all still depends on how individual translate these bunch of data to become information.. that’s the underlying skill that I must posses..

oh yes.. i’ve struggled abit on the /etc/apache2/vhosts.d/ .conf setting on which the manual indicated wrongly; the DocumentRoot path is referring directly to cacti folder (/usr/share/cacti) on which it should be pointing to (/usr/share/) instead. everything went smooth thanks to my accumulative knowledge on apache & mysql.. managed to install within 1hr..

ServerAdmin exeqzalie@exsolusi.com
ServerName cacti.local
DocumentRoot /usr/share/cacti
ErrorLog /var/log/apache2/cacti-error_log
CustomLog /var/log/apache2/cacti-access_log combined
HostnameLookups Off
UseCanonicalName Off
ServerSignature On

UserDir public_html
Include /etc/apache2/mod_userdir.conf

<Directory "/usr/share/cacti“>
Options Indexes FollowSymLinks
AllowOverride None
Order allow,deny
Allow from all

k mission accomplished, can i go to sleep now? Thanks..

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葫蘆收五毒，平安過端午!

This weekend i’ve spent quite a  few hours watching below intriguing movies:

1. BBC.Horizon.2008.What.on.Earth.is.Wrong.with.Gravity
2. BBC.Horizon.2009.How.Many.People.Can.Live.on.Planet.Earth
3. BBC.Horizon.2010.Is.Everything.We.Know.About.The.Universe.Wrong.
4. BBC.Horizon.2011.What.is.One.Degree.HDTV
5. BBC.Horizon.2011.What.is.Reality.HDTV
6. BBC.Horizon.2008.How.to.Make.Better.Decisions.
7. BBC.Horizon.Fermat’s.Last.Theorem

and also managed to watch quite a few RHEL 5 tutorial, learned some of the essential shell command, linux boot process and still in the midst of understanding the concept of SNMP, how to install MRTG / Cacti, its functions and lots of how tos, and hopefully i still have time to try out the new BT 5 that was released a month ago and was thinking to purchase a thumbdrive for my own persistent installation… btw happened that today was sunday so i exercised quite a bit and recently abandoned adidas’ micoach and installed this new cool apps called endomondo to track my running progress..

oh yes, allow me to express my gratitude although you might not be seeing this but i sincerely thanked you (my auntie landlord) for giving me 4 deliciousss home-made zong zi (粽子).. wish her and her family 端午節快樂!! 🙂

For my future reference on the Linux boot up process:
When you boot your computer, the first thing that it will do is load the bootloader — either GRUB or LILO in most cases. The bootloader will then load the Linux kernel — the core operating system. Next, a process called init starts. This process reads the file /etc/inittab to establish the runlevel to use. The runlevel is the start mode for the computer.

Once init knows the runlevel it will look for the appropriate files or directories as defined in /etc/initab. Init will then either run the script files defined by /etc/initab, or run the script files in the directories defined by /etc/initab (depending on the set up of your system). Finally, init will present you with the logon mode that you’ve selected.

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GRE Tunnel through WAN Lab#1

Normally, a GRE tunnel interface comes up as soon as it is configured and it stays up as long as there is a valid tunnel source address or interface which is up. The tunnel destination IP address must also be routable, which is true even if the other side of the tunnel has not been configured. This means that a static route or PBR forwarding of packets via the GRE tunnel interface remains in effect even though the GRE tunnel packets do not reach the other end of the tunnel.

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VMWare Quick fix – Taking Ownership of the Virtual Machine failed

as i’ve ventured again on the ESXi4.1 on my vmware workstation, my physical machine apparently wasn’t able to handle the load and drive incompatibility has caused my win 7 host to BSOD.. when i finished rebooting my host, i found that the vm file was locked. so i googled it out and found out a pretty simple quickfix:

Reason (one of..): Host OS might have shutdown unexpectedly causing a running Virtual Machine to die without saving its state.

Quick fix:
1. Go to the virtual machines directory, i.e. where VM files are stored on host OS.
3. Check for lock (.lck) folder inside usuually has vmdk.lck, vmem.lck, vmx.lck extensions.
4. Move or change the destination folder path. (dont forget to backup JIC – just in case)
5. Click the list of VM and it should be on suspended mode / power off mode.
6. If its fixed, delete the .lck files and voila.

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