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503 backend fetch failed


CentOS Web Panel error “503 backend fetch failed” – Here’s how to fix it

CentOS Web Panel is a free control panel that allows quick and easy management of servers.

It allows to improve server performance and website speed with web applications like Varnish Cache.

But, enabling Varnish Cache often creates the error “503 backend fetch failed” due to configuration problems.

At Bobcares, we help server owners to find the real reason for such errors as part of our Dedicated Support Services for Web Hosts.

Today, let’s see what causes the CentOS Web Panel error “503 backend fetch failed” and how we fix it.

 

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