[bugfix] Frontend: rewrite proxy Host header for Istio mesh routing#481
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Caddy's reverse_proxy preserved the browser's original Host header
(the external hostname) when proxying /_query* and /-/* to the backend.
Behind an Istio service mesh, the sidecar routes by Host: an unrecognized
external host falls through to PassthroughCluster and fails with 503.
Add `header_up Host {http.reverse_proxy.upstream.hostport}` so the proxied
request carries the backend's hostport, letting the mesh route it to the
correct cluster.
Fixes #478
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TsqHDFCs6ebQPjXQNpvNsW
Bump the chart's own semver to trigger publish-chart.yml, shipping the Istio Host-header proxy fix (#478). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01TsqHDFCs6ebQPjXQNpvNsW
This reverts commit ec74ecc.
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Caddy's reverse_proxy preserved the browser's original Host header
(the external hostname) when proxying /_query* and /-/* to the backend.
Behind an Istio service mesh, the sidecar routes by Host: an unrecognized
external host falls through to PassthroughCluster and fails with 503.
Add
header_up Host {http.reverse_proxy.upstream.hostport}so the proxiedrequest carries the backend's hostport, letting the mesh route it to the
correct cluster.
Fixes #478
Co-Authored-By: Claude Opus 4.8 noreply@anthropic.com