Showing posts with label Comparison. Show all posts
Showing posts with label Comparison. Show all posts

Friday, 12 July 2019

VM v/s Containers


Continuing the last post "containerization - what & why", In this post, we will compare the VM & Containers advantages, which one will server us better in which scenario ?


Portability:
VMs are more portable than Containers because VM carry its os with itself hence it can run on any host od where Containers can only run on the os for which it is built.

Size:
VMs are heavier than Containers due to guest os size within VM.

Maintenance Ease:
Containers are easy to maintain as with it Developers only have to deal with the application code & its dependencies, underlying os will be maintained by the os team where VMs are heavier and tightly coupled with application which makes it more difficult to manager.

Replication:
Containers can be replicated faster than VM and consume less resources on host os.

Kickoff time:
Containers are taking less time to kick off than VM as containers are using host os memory and resources which is already up and running where VM first have to bring up its guest os and then application.

Security:
VM are more secure than Containers as Containers shares lot of things with host os and it can be fatal if missed a back door access to your container. But with evolving kubernetes it can be made more secure for use.

Let me know in comment what next you want to discuss about Containerization ?? till then Happy Learning !!



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Wednesday, 18 May 2016

Windows & Linux - Command Comparison



I am a linux command line geek and when I am working on windows I miss it as there are lot of kung-fu which we can do easily in linux terminal than any GUI tool. So thought of creating a command equivalent list of Windows and Linux.

let me know if there is any daily command which I missed to add here. Hoping this will help you guys.

www.datagenx.net/2016/05/windows-linux-command-comparison.html



Command's Purpose MS-DOS Linux Basic Linux Example
Copies files copy cp cp thisfile.txt /home/thisdirectory
Moves files move mv mv thisfile.txt /home/thisdirectory
Lists files dir ls ls
Clears screen cls clear clear
Closes shell prompt exit exit exit
Displays or sets date date date date
Deletes files del rm rm thisfile.txt
"Echoes" output to the screen echo echo echo this message
Edits text files edit gedit gedit thisfile.txt
Compares the contents of files fc diff diff file1 file2
Finds a string of text in a file find grep grep word or phrase thisfile.txt
Displays command help command /? man or info man command
Creates a directory mkdir, md mkdir mkdir directory
Deletes an existing directory rmdir, rd rmdir rmdirt directory
Views contents of a file more less less thisfile.txt
Renames a file ren mv mv thisfile.txt thatfile.txt
Displays your location in the file system chdir pwd pwd
Changes directories with a specified path (absolute path) cd pathname cd pathname cd /directory/directory
Changes directories with a relative path cd.. cd .. cd ..
Displays the time time date date
Shows amount of RAM in use mem free free
Displays the contents of a file type cat type filename
Reverse IP lookup nslookup nslookup
Checking the network status netstat netstat netstat
Pinging any system ping ping ping 127.0.0.1
Running Process tasklist ps ps -ef
Get login username net session who who 
Tracing IP  tracert traceroute
Sets file permissions Attrib chmod chmod perm1 perm2
Display OS version ver uname -a uname -a
Sorts lines in a file sort sort sort filename
Compare two files diff fc fc file1 file2
OS scheduler at crontab crontab -l
FTP ftp ftp ftp user@host




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Thursday, 24 December 2015

Python Points #4 - Conditions

Monday, 23 November 2015

Python points #3 - Comparison