When installing, configuring, or managing VMware virtual infrastructure, one of the steps which should be performed before releasing a host (back) to production is to perform operational readiness tests. One test which is quite critical is that of testing virtual infrastructure networking. After all, what good is a running VM if it has no connectivity to the rest of the network? Each ESX or ESXi host pNIC should be individually tested for internal and upstream connectivity, VLAN tagging functionality if in use (quite often it is), in addition to proper failover and fail back, and jumbo frames at the guest level if used. There are several types of VMs or appliances which can be used to generate basic network traffic for operational readiness testing.
One that I’ve been using recently (introduced to me by a colleague) is. To summarize: Tiny Core Linux is a very small (10 MB) minimal Linux GUI Desktop. It is based on Linux 2.6 kernel, Busybox, Tiny X, and Fltk.
The core runs entirely in ram and boots very quickly. Also offered is Micro Core a 6 MB image that is the console based engine of Tiny Core. CLI versions of Tiny Core’s program allows the same functionality of Tiny Core’s extensions only starting with a console based system. TCL carries with it a few of benefits, some of which are tied to its small stature:. The minimalist approach makes deployment simple.
At just 10MB, it’s extremely portable and boots fast. As a Linux OS, it’s freely distributable without the complexities of licensing or activation. It’s compatible with VMware hardware 7 and the Flexible or E1000 vNIC making it a good network test candidate. No installation is required. It runs straight from an.ISO file or can boot from a USB drive. Point and click GUI interface provides ease of use and configuration for any user. When deployed with internet connectivity, it has the ability to download and install useful applications from an online repository such as Filezilla or Firefox.
There are tons of free applications in the repository. As I mentioned before, deployment of TCL is pretty easy. Create a VM shell with the following properties:. Other Linux (32-bit). 1 vCPU.
256MB RAM. Flexible or E1000 vNIC. Point the virtual CD/DVD ROM drive to the bootable.ISO.
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No HDD or SCSI storage controller required First boot splash screen. Nothing real exciting here other than optional boot options which aren’t required for the purposes of this article. Press Enter to continue the boot process: After pressing Enter, the boot process is briefly displayed: Once booted, the first step would be to configure the network via the Panel applet at the bottom of the Mac like menu: If DHCP is enabled on the subnet, an address will be automatically acquired by this point. Otherwise, give eth0 a static TCP/IP configuration.
Name Servers are optional and not required for basic network connectivity unless you would like to test name resolution in your virtual infrastructure: Once TCP/IP has been configured, a Terminal can be opened up and a basic ping test can be started. Change the IP address and vNIC portgroup to test different VLANs but my suggestion would be to spawn multiple TCL instances, one per each VLAN to test because you’ll need to vMotion the TCL VMs to each host being tested. You don’t want to continuously be modifying the TCP/IP configuration: What else of interest is in the Panel applet besides Network configuration? Some ubiquitous items such as date/time configuration, disk and terminal services tools, and wallpaper configuration: The online application repository is packed with what seems like thousands of apps: After installing FileZilla, it’s available as an applet: FileZilla is fully functional: So I’ve only been using Tiny Core Linux as a network testing appliance, but clearly it has some other uses when paired with extensible applications. A few other things that I’ll point out is:.
TCL can be Suspended in order to move it to other clusters (with compatible CPUs) so that both a host and a storage migration can be performed in a single step. Once TCL reaches its destination cluster, Unsuspend. During my tests, TCL will continue to run without issue after being severed from its boot.ISO. This is possible because it is booted into RAM where it continues to run from that point on.
I’ve been watching Tiny Core Linux for several months and the development efforts appear fairly aggressive and backed by an individual or group with a lot of talent and energy which is good to see. As of this writing, version 3.5 is available.
Give Tiny Core Linux a try. You may want to check out Unity Linux, which is a bit more full-featured minimalist Linux-based OS. It takes up just a slightly more resources but is well worth it, IMHO.
It uses RPM5 packaging so you have many more optional packages available for the system and there’s no need to deal with limitations of tcz packages. I was able to get an unity system with only 3GB vdisk, fully to date, VMTools installed, chromium-browser/flash10.2 with 400MB left over. I also install an arsenal of command-line network tools which eats up very little disk space. This is my go-to OS for network troubleshooting, either on a USB stick or as a virtual machine.
Pradeep Singh 31st Aug 2017 piCore is the Raspberry Pi port of Tiny Core Linux, which is an independent system architected by Robert Shingledecker and now developed by a small team of developers with strong community support. As piCore runs entirely in RAM, boot media is not used after boot and there is no installation in conventional terms. Let’s explore how to install and configure piCore on RaspberryPi – 1. Download the piCore image: You can download the latest piCore image from the following download link (for this article I am using the piCore-9.0.3.zip image) – 2.
Download and Install Etcher: After downloading the piCore image, you need to flash it into the SD Card of your Raspberry Pi. Etcher is a great utility to flash the OS images into SD Cards or USB Drives. You can download it from Etcher home page – 3. Burn the piCore image into SD Card: Connect your SD Card with your computer and use Etcher to flash it with OS.
Boot Raspberry Pi with piCore: Connect the flashed SD Card on your Raspberry Pi and power it on. SD Card Partitions: The first partition (/dev/mmcblk0p1) is Win95 FAT32 (VFAT) type partition; it contains the basic piCore system and the Raspberry Pi boot loader, firmware and other support files.
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This partition is unmounted during operation, and the system does not use it after the boot process gets completed. The second one (/dev/mmcblk0p2) is ext4 type partition; it is used for pre-installed extensions like ssh. However, the size of this partition is very small and it won’t allow you to install any additional extensions. You must expand this partition to have enough free space for additional extensions and backups. Expand the /dev/mmcblk0p2 Partition: 6.1 Start fdisk partitioning tool as root, using the following command – sudo fdisk -u /dev/mmcblk0 6.2 Now list partitions with ‘ p‘ command and write down the starting and ending cylinders of the second partition. 6.3 Delete the second partition with ‘ d‘ command and then enter ‘ 2‘ as ‘ Partition Number’.
6.4 Create a new partition using ‘ n‘ command. Select ‘p’ for ‘ Primary Partition‘ and ‘ 2‘ for ‘ Partition Number’. For ‘First Cylinder’ use the same value as you had in the original partition ( you made note of this value in step # 6.2). You may use the default value for ‘Last Cylinder’ or may use the smaller value if you want to create more partitions (for ex: swap disk). Following is the screenshot for steps 6.1 to 6.4 – 6.5 Reboot the system using the following command – sudo reboot 6.6 After the system boots up, expand the ‘ /dev/mmcblk0p2‘ partition using the “ sudo resize2fs /dev/mmcblk0p2” command – tc@box:$ sudo resize2fs /dev/mmcblk0p2 resize2fs 1.43.4 (31-Jan-2017) Filesystem at /dev/mmcblk0p2 is mounted on /mnt/mmcblk0p2; on-line resizing required olddescblocks = 1, newdescblocks = 104 The filesystem on /dev/mmcblk0p2 is now 13561088 (1k) blocks long. Tc@box:$ With this, your Raspberry Pi is ready with piCore.
Reinstall SSH Extension (If you accidentally mess-up tce directory): Though the piCore comes with SSH extension included, if you aren’t careful during the partition expansion process, it may stop working (if you lose tce directory from /dev/mmcblk0p2 partition). If you find yourself in this position, you can reinstall SSH using the following article – The default user ssh or shell user for piCore is “ tc” and its default password is “ piCore“. For “ root” user, login to piCore shell using “ tc” user and run “ sudo passwd” command to change the root password.
Conclusion: piCore is a really slim OS and because of this, it takes some efforts to set it up on Raspberry Pi. However, the effort pays off when you utilize the Raspberry Pi hardware to its maximum potential with a minimalistic OS. It would allow you to use the most part of the hardware for the application or the process that you want to run on your Raspberry Pi.
This video tutorial shows Tiny Core Linux 8.0 Installation on VMware Workstation/Player step by step. We'll also install applications such as Nano, LXTerminal, Gedit, Firefox, PCManfm, VLC and LibreOffice 5 on Tiny Core 8.0.
This tutorial is also helpful to install Tiny Core Linux on physical computer or server. We'll also install and test VMware Tools (Open VM Tools) on Tiny Core 8.0 for better performance and usability features such as Fit Guest Now, Clipboard Sharing and Mouse Integration. Steps: 1- Download Tiny Core Linux 8.0 ISO 2- Create Virtual Machine on VMware Workstation/Player 3- Start Tiny Core Linux Installation 4- Installing and Configuring VMware Tools (Open VM Tools) 5- Installing Nano, LXTerminal, Gedit, Firefox, PCManfm, VLC and LibreOffice 5 Applications on Tiny Core 6- Tiny Core Linux 8.0 Review Tiny Core Linux 8.0 New Features and Improvements Tiny Core Linux 8.0 has been released. Tiny Core Linux is a minimalist (but extensible) distribution, built from scratch, with a focus on being as small as possible.
TinyCore edition with a graphical window manager (flwm) is a 16 MB download. This major new release delivers a number of updates. Busybox updated to 1.25.1 and cpio patched for uid/gid error - Kernel updated to 4.8.17 - Glibc updated to 2.24 - GCC updated to 6.2.0 - e2fsprogs base libs/apps updated to 1.43.3 - Util-linux base libs/apps updated to 2.28.2 Hope you found it informative and useful. Any questions or comments are welcomed.
PLEASE SUBSCRIBE TO THE CHANNEL - Website: Facebook Page: Twitter: Linux Video Tutorials: Tiny Core 8.0 Installation with Apps on VMware Video: Installing Tiny Core 8 on VMware Tutorial.
Frugal Install Tiny Core Linux 0. Introduction The first step before you install any operating system such as Tiny Core is to back up everything on your computer before starting. Before making the commitment to perform a frugal install you should consider our. It covers the basics of running Tiny Core from CDROM and/or USB pendrive.
Most will find learning Tiny Core the quick and easy way a better starting point. But for those who are ready to take the plunge to frugal, this guide shows step by step information on how to install TC via the installer. The older instructions for are still available, but using the installer is recommended.
The guide assumes you've either booted the CorePlus CD, or have installed the tc-install extension (tc-install.tcz) Keep in mind that this guide is basic and that the user may choose to adapt, remove and/or add parts as desired. The installer is also applicable to USB sticks and other external media. Note: If you already have a Linux System booting, then you do not need to make a partition for Tiny Core! Tiny Core can run in a single directory in your existing Linux installation. To do so, at step 1, uncheck the option to 'Install boot loader'.
At step 2, select an existing partition, and at Step 3, do not format it. Upon completion you will need to manually configure your existing boot loader. Start the installation Open the installer: It can also be started via the shell or Run icon by typing 'tc-install'. Browse to the install files Browse to /mnt/ device/boot and select the core.gz file. With the source selected, pick the desired install type and target. We're going to install to an empty hard drive.
If using an existing partition, tick the box to mark it active to have it bootable. Formatting Format the new partition.
It's recommended to pick one of the ext. options to support linux permissions. Bootcodes If you want to use additional bootcodes, enter them now. Otherwise leave this blank. The example bootcodes set a framebuffer resolution and disable wbar icons. Note that you can edit them any time after the install in the bootloader's config file, usually extlinux.conf.
CorePlus installation options If you are installing from the CorePlus CD you will see an additional screen asking which extensions from CorePlus you would like to install. Note that you will only see this screen if running the installer from a CorePlus CD. The selected extensions will be installed. Tiny Core installation options If you are installing from the Tiny Core CD you will see an additional screen asking which directory extensions should be installed from. You should select the cde or tce directory that contains the extensions that you would like installed. For example, if the Tiny Core CD is mounted on /mnt/sr0 you should select /mnt/sr0/cde Note that you will not see this screen if installing from CorePlus.
All extensions from selected directory will be installed. Install If everything's OK, click on proceed: The time required will depend on the size of your hard drive. Testing TC is now installed! Remove the original CD boot media and reboot.
Note: the system may need to be configured to boot hdX first in the BIOS.
Before starting the installation process check my about the TinyCore Linux. 1- Download the.iso file from this. (TinyCore is just 12MB). 2- Mount the.iso file to your Virtual (CD/DVD) Drive, or from a mini-CD or even USB. 3- Open VirtualBox and make a New OS. Name: TinyCore, Type: Linux, Version: Linux 2.6, then OK. 4- Memory Size: 256 MB, and Next 5- select Create a new virtual harddrive, press Next, and select VDI, 6- Select Dynamicaly Allocated and choose 512MB of Hard Disk and Finish.
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7- Press Start button. 8- Select the drive you mounted your iso file there to start from there (for me it is E: ). Now you will see the OS loads on the RAM and you can test it but if you want to install it you need to continue the next steps. 9- On the Desktop of your TinyCore go to the Wbar (the bottom ribbon) and run APPs. It will ask about to find the fastest mirror, press OK and wait for the mirror to be find then press OK again.
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10- Go to AppsCloudBrowse and in the search bar type tc-install and press search, when the search is complete select tc-install.tcz and press Go button. Wait to see the message: tc-install.tcz OK. 11- Now the tc-install Icon is added to your Wbar, so run it. 12- Check that the Path to the core.gz file is automatically selected (If not you have to find the file in the Mounted iso file, just double Click in the address bar to browse) 13- Tick, Frugal and Whole Disk, and choose sda from the list.
14- Press button, choose ext4 and press button and again in the next window press button. 15- Then you will see in the next page the Install Extension Radio Button is checked and the address is provided.
Just Press button and in the next page you will see a brief list of all settings, you just need to press Proceed and Wait. 16- After Installation is completed. Unmount the.iso file and reboot the linux. Now it should start from the hard disk. If you cannot do the installation process using this easy steps, then go to this and see the super-easy installation manual. I got it installed in VirtualBox no problem. However I am having a hard time making it accessible on the network.
I am using Bridged Mode on the Network with Allow All enabled. I have set a static ip in TinyCore on the adapter to 192.168.1.150. I then configured my router to only dhcp betweeen 192.168.1.2 and 192.168.1.90.
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My host has a static IP of 192.158.1.99. I installed IpTables in tinyCore and opened EVERYTHING. Installed NGinx and NodeJs.
And in the TinyCore VM I can open Chromium and browse to my NGinx website. However from the host I cannot, and it does not respond to the ping.
Everything I can think of is configured and open (firewalls on both sides). So all I can think now is that the VirtualBox Guest Additions are needed in TinyCore to make the Bridged Nic work right. However I cannot install those because it can’t find the header files, even when I installed the header files, I need to specify KERNDIR, and I tried pointing that to /usr/include/linux (where the headers installed to), but still no dice.
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