Linux, programming and more
I decided to put a nginX (pronounced as ‘Engine X’) as my primary webserver to reduce the server load and improve performance.
Nginx can only handle static content (CSS, simple HTML, and static files) l have to proxy incoming dynamic requests to another server, in my case Apache2 with PHP5 as suExec/ Fcgid.
Important hardware monitoring – check HDD temperature:
Install (Debian /Ubuntu way):
1 | aptitude install hddtemp |
Check it:
1 2 3 4 | hddtemp /dev/sda1 # Output: # /dev/sda1: ST31500341AS: 42°C # /dev/sdb1: ST31500341AS: 38°C |
1 2 3 | hddtemp -n /dev/sda1 Output: # 42 |
Sometimes I have to share some files over HTTP and I have no time to install apache or lighty. Everyone who has python can use SimpleHTTPServer module which can be started from command line.
Every request to your files will be logged to the terminal.
Start web server in some directory which should be shared:
1 2 | [root@hexa-core webserver]# python -m SimpleHTTPServer 88 Serving HTTP on 0.0.0.0 port 88 ... |
You can change the port!
Logs:
1 | pD4B88C85.dip.t-dialin.net - - [13/Jan/2011 21:57:01] "GET / HTTP/1.1" 200 |
Sometimes if I work with really huge MySQL databases, I miss the progress bar of the restore progress.
I found a little solution to see the progress 
Description:
pv allows a user to see the progress of data through a pipeline, by giving information such as time elapsed, percentage completed (with progress bar), current throughput rate, total data transferred, and ETA.
1 2 | pv database.sql | mysql -D databasename -pyourpassword 948.4MB 0:00:03 [22.7MB/s] [=====> ] 21% ETA 0:00:11 |
for my KVM guests I use only LVM disks, I find it easy to use and administer.
Every time you running out of space you can resize your lvn volume.
Bus some days ago I moved some virtual servers to another physical Dom0(Host) and was a little bit confused – how to move lvm – DD was not the best idea.
There is always another way, here is my:
Very important! Shut-down virtual machine.
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