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166 lines
5.9 KiB
Markdown
166 lines
5.9 KiB
Markdown
# Free Hosting VPS
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###### guide-by-example
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# Purpose & Overview
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Free virtual private server hosting on a cloud.<br>
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Here are github repos with details on various providers:
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* [Cloud Service Providers Free Tier Overview](https://github.com/cloudcommunity/Cloud-Free-Tier-Comparison)
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* [Stack on a budget](https://github.com/255kb/stack-on-a-budget)
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So far I only run Oracle Cloud.<br>
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Will add others if I will deal with them, or if Oracle fucks me over.
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# Oracle Cloud
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### What Free Tier Offers
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As of 2023.
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[Official docs](https://docs.oracle.com/en-us/iaas/Content/FreeTier/freetier_topic-Always_Free_Resources.htm)
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* 1-2 instances of AMD based Compute VMs with 1/8 OCPU and 1 GB ram each<br>
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shape name: VM.Standard.E2.1.Micro
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* 1-4 instances of 4 Arm-based Ampere A1 cores with 24 GB of ram to divide<br>
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shape name: VM.Standard.A1.Flex
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* Block Volumes Storage, 200 GB total, default 50GB for boot of any VM
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* 10 Mbps bandwidth
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* 10 TB per month outbound data transfer
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### Registration
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* A **credit card** is needed during the registration.
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* **[Home region](https://docs.oracle.com/en-us/iaas/Content/General/Concepts/regions.htm)**
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is picked and it can **not** be changed later.
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Choise here will impact the IP address location and possibly availability of
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free instances to create.
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* I read that you wont be able to re-use credit card if you **terminate** your account.
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Seen comments online that some just cant get the registration done.
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### Instance creaction
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Instances > Create instance
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* Name - whatever
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* Create in compartment - default
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* Placement - default; `Always Free-eligible`
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* Security - default - shield disabled
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* Image and shape
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* VM.Standard.E2.1.Micro `Always Free-eligible`
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* Ubuntu 22.04 `Always Free-eligible`
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* Networking - edit; create a new virtual cloud network; or pick existing one<br>
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same for subnet<br>
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Assign a public IPv4 address
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* Add SSH keys - `Paste public keys`. Well it be good if you were not noob,
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and already have your ssh identiy and that you just paste your public key.<br>
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Noobs will need to pick `Generate a key pair for me`, then download
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both public and private keys and google out how to use them to
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SSH in the VM once it's running.
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* Boot volume - keep default
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You can ignore €1.85/month charge for Boot volume displayed, its a bug.
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After the creation, in Billing & Cost Management - Subscriptions or Cost analysis
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the ammount displayed should be 0€.
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### Firewall settings
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in examples here port will be 7777/tcp
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**firewalld in ubuntu open port**
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* `sudo apt-get update && sudo apt-get upgrade`
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* `sudo apt install firewalld`
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* `sudo firewall-cmd --zone=public --permanent --add-port=7777/tcp`
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* `sudo firewall-cmd --reload`
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**Oracle network settings ingress rule**
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* Virtual Cloud Networks > VNC you got there > Subnet > Securty List > Ingress Rules
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* A rule for port 22 should be there, to let in ssh.
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* Add new rule
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* Source Type - CIDR
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* Source CIDR - `0.0.0.0/0`
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* IP Protocol - `All Protocols`
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**To test**
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* ssh in to the VM
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* `nc -l 7777` - starts a netcat server listening on port 7777/tcp
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* go on site like [yougetsignal.com](https://www.yougetsignal.com/tools/open-ports/)<br>
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put in IP of the VM, port, test if you get `open`
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* or from your linux machine `nc <ip-of-the-vm> 7777`,<br>
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write something, it should appear in the VM
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If it works, then depending on the use, one can start securing stuff better.
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For example, restricing from what public ip connection are accepted -
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ingress rule has `Source CIDR` set to lets say `353.749.385.54/32`
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If set, the online test from a website will fail, but nc from
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a machine with that public IP will work.
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### Docker on ubuntu
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For some reason [its not stupid simple](https://docs.docker.com/engine/install/ubuntu/)
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to install docker on ubuntu. You are put to decisions.<br>
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I picked the script way, which I guess dont get upated?
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* `curl -fsSL https://get.docker.com | bash`
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### Prevent reclaim if VM runs idle too much
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I will not be running anything for now as a test,
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if email about idle instance comes.
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IF it comes the solution should be to put regular load on the VM.
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This should do it.
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* `echo "*/5 * * * * root timeout 46 nice md5sum /dev/zero" | sudo tee /etc/cron.d/dummy-load`
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Some discussion on this
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* [1](https://www.reddit.com/r/oraclecloud/comments/122b4gf/a_simple_cron_controlled_load_generator_for/)
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* [2](https://www.reddit.com/r/oraclecloud/comments/125rege/what_to_run_on_always_free_to_prevent_idle/)
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## Archlinux
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I am used to archlinux and everything else feels wrong.<br>
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So to get it as a VM on oracle cloud.
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* Download the latest qcow2 image<br>
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[https://geo.mirror.pkgbuild.com/images/latest/Arch-Linux-x86_64-cloudimg.qcow2](https://geo.mirror.pkgbuild.com/images/latest/Arch-Linux-x86_64-cloudimg.qcow2)
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* Storage > Buckets > Bucket in the list > Upload
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* Compute > Custom images > Import image
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* Operating system - Generic Linux
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* Import from an Object Storage bucket
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* Image type - QCOW2
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* Paravirtualized mode
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arch/arch for SSH login, recommend disabling password login and do IP restriction
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Not tested but theres also this as option:
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* [Convert instructions](https://gist.github.com/zengxinhui/01afb43b8d663a4232a42ee9858be45e)
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* [arch ARM](https://www.reddit.com/r/archlinux/comments/14iqb6h/how_to_install_arch_on_an_oracle_cloud_free_tier/)
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### Links
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Some youtube videos and articles
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* [youtube-1](https://youtu.be/NKc3k7xceT8)
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* [youtube-2](https://youtu.be/zWeFD4NNF5o)
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* [ryanharrison - oracle-cloud-free-server](https://ryanharrison.co.uk/2023/01/28/oracle-cloud-free-server.html)
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