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lightning19

I run a SaaS that makes between $1000-$2000/yr on a $5 VM. My operations are as follows:

On the VM:

- Nodejs + React SSR

- Nginx

- Certbot to manage my SSL cert

- Integrated with Grafana's cloud service (free tier)

Outside of the VM:

- Managed MongoDB cluster

- API health check's every 3 min with email alerts (I use multiple uptime services to check from different regions) - DB backup cron jobs, backups are stored in 2 cloud providers

- Service desk for customer's to send queries/raise issues

- Alerts if CPU/RAM usage is too high (never got an alert for the past 2 years)

I also nuke the VM once a year and re-provision otherwise you have to maintain the OS, do cleanup etc.

Future work:

- Find way to backup my DNS records

- Probably need to monitor the SSL cert expiration in case certbot breaks

- CI/CD

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That is really awesome.

> nuke the VM once a year and re-provision otherwise you have to maintain the OS, do cleanup etc

That is really interesting. What are you using to re-setup your entire infrastructure after purging a VM? How do you manage the down time between one vm purge to setting up the next one.

I would love to know, going beyond the VPS what is your total infrastructure + maintenance cost.

Thanks :)

I set things up again on the new VM manually. I have a runbook for it, usually takes me 30 mins or less.

To not have any downtime I keep the old VM up and attach a new public IP to the new VM. I then update the DNS records and after a while when the new IP is mapped to my domain I then stop the old VM.

Costs:

Managed Mongodb cluster: $9 but I share it between multiple side projects so let's say $3

API health checks - free! I use digital ocean and fresh ping

Service Desk - free! I use Jira

DNS: Usually $0.3

DB backups: within the free tier on both cloud providers. I have it set to only keep the last x backups so this should always be free

Cron job to run the backup: I have a serverless function for this, still within the free tier

SSL cert - free because I use let's encrypt

Docker image storage costs: <$1

Total ~$9.5

Truly incredible. Thank you very much sharing.

Can you please say the services you use for DNS, Docker image storage?

DNS - I use GCP as the domain was purchased with domains.google because I get free email addresses which I can receive and reply to from my personal gmail (e.g. support@saasapp.com). I'm not 100% sure if this setup will work with another DNS provider.

Docker Image - Since I'm running this most of the operation on AWS I use ECR

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