vps on the same host

If you spin up your VPS's, there are two ways you can determine if they are on different hosts.

1. Use the Lish console. Don't log in, but use CTRL+A, then D, to detach from the screen session. You'll see a prompt that can tell you if you're on the same host, like this one. [linode31895549@h1561-rin1 lish]# and [linode25681270@h1837-rin1 lish]# The hosts identified by h1561-rin1 and h1837-rin1 are different physical machines in the same data center.
2. Call Linode, they can also tell you if your VPS's are on different hosts.

Good luck.

Blake

If I buy 3 vps, how can I avoid being on the same host?

Deploy them in 3 different data centers.

-- sw

I need to build the main system and backup in the same area, 1 total 3 vps.
How to confirm that it will not be on the same physical host, so that our system cannot be used during maintenance.

How to confirm that it will not be on the same physical host, so that our system cannot be used during maintenance.

You can't…unless you deploy bare-metal servers (which AFAIK are not available yet).

I've been a Linode customer for a long time and, in my experience, I can count the number of times my "system cannot be used during maintenance" on one hand…and the amount of downtime due to "maintenance" on each occurrence has been exceedingly small…a few minutes total over a period of nearly 10 years.

I suffer more downtime due to my own and local ISP screwups than I ever have for Linode "maintenance".

-- sw

I have heard too many cases of data corruption when using VPS, no matter which VPS (including Linode).
The data of each of our customers is very important, and when a problem occurs, we hope that the data will be backed up within 10 minutes, 1 minute, or 1 second.
Because our brand is still under construction, we cannot lose the trust of our customers.
We have offsite backups every day or every few hours, but there may be 1 day or hours of data loss when something goes wrong.
The mariadb galera built by vps on different hosts may at least lose only a few minutes to a few seconds of data.
So it is very important to confirm whether the allocated VPS is on the same host, otherwise it is meaningless to use galera to deploy 3 nodes in the mariadb provided by linode (but if all 3 nodes are on the same host, it is also totally pointless)

IMHO, you’re seeking “perfect” when “good” will do…

If you’re that concerned about your “brand”, you prob should be investing in your own infrastructure and not using VPSs.

— sw

thsnk tech10.