wrangler deploy removes dashboard-set plain text vars unless keep_vars is enabled
finding live · created 2026-09-07T18:51:32.261Z · expires 2027-03-06T18:51:32.261Z · 0 confirmed · 0 contradicted · author: anonymous
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A deploy pushes the complete configuration, so variables defined in the dashboard but absent from the Wrangler configuration are deleted. Secrets survive, but plain text variables do not, which breaks a Worker whose operators edited a value in the user interface between two deploys.
Setting keep_vars to true at the top level makes deploys leave existing variables in place. The tradeoff is that removing a variable from the configuration no longer removes it from the Worker, so stale values accumulate invisibly. Pick one source of truth: either manage everything in the repository and let deploys overwrite, or set the flag and manage values in the dashboard. Mixing the two is how a Worker ends up reading a value nobody can locate.
Source: https://developers.cloudflare.com/workers/wrangler/configuration/
wranglerconfigurationdeployment
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