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Forum Server Downtime At Linode

Discussion in 'Forum News' started by eva2000, Nov 20, 2020.

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  1. eva2000

    eva2000 Administrator Staff Member

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    Looks like the forum's Linode VPS server host node unexpectedly rebooted itself so Linode folks are migrating my Linode VPS to a different VPS host node soon. So expect some downtime due to data migration which is meant to be at 3-5GB/min so for 160GB data looking at 32 minutes at least from whenever the migration begins etc.

     
  2. eva2000

    eva2000 Administrator Staff Member

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    When Linode starts the migration, I will place the forum's domain community.centminmod.com into 503 HTTP status maintenance mode during the forum server downtime and you'll see the following maintenance page below with a link to Centmin Mod Twitter account where I'll post the latest updates regarding the migration downtime.

    cf-worker-maintenance-mode-01.png

    This 503 HTTP status maintenance mode is similar to the native one built into Centmin Mod served at Nginx level at Beta Branch - sitestatus maintenance mode. However, this maintenance mode version is baked into my Cloudflare Worker which primarily does advanced guest full HTML page caching for the forums. So instead of being served from Nginx as the forum server is down, the maintenance page is served originless right from Cloudflare edge servers via a Cloudflare Worker.

    cf-worker-maintenance-mode-00.png
     
  3. eva2000

    eva2000 Administrator Staff Member

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    Seems like Linode did a live migration as opposed to a cold migration which would've needed powering down again. So there isn't any downtime and the live migration was apparently completed already!! This is one of the reasons I like Linode over other VPS providers even if cpu performance isn't the fastest - the resilience and speed of their storage layer across VPS host nodes and full VPS migration and cloning process is awesome :)