{"record":{"id":"e95b2662515a78b7","repo":"caddyserver/caddy","slug":"creating-storage-configuration-v-e95b26","errorCode":null,"errorMessage":"creating storage configuration: %v","messagePattern":"creating storage configuration: (.+?)","errorType":"validation","errorClass":null,"httpStatus":null,"severity":"error","filePath":"modules/caddytls/capools.go","lineNumber":414,"sourceCode":"func (StoragePool) CaddyModule() caddy.ModuleInfo {\n\treturn caddy.ModuleInfo{\n\t\tID: \"tls.ca_pool.source.storage\",\n\t\tNew: func() caddy.Module {\n\t\t\treturn new(StoragePool)\n\t\t},\n\t}\n}\n\n// Provision implements caddy.Provisioner.\nfunc (ca *StoragePool) Provision(ctx caddy.Context) error {\n\tif ca.StorageRaw != nil {\n\t\tval, err := ctx.LoadModule(ca, \"StorageRaw\")\n\t\tif err != nil {\n\t\t\treturn fmt.Errorf(\"loading storage module: %v\", err)\n\t\t}\n\t\tcmStorage, err := val.(caddy.StorageConverter).CertMagicStorage()\n\t\tif err != nil {\n\t\t\treturn fmt.Errorf(\"creating storage configuration: %v\", err)\n\t\t}\n\t\tca.storage = cmStorage\n\t}\n\tif ca.storage == nil {\n\t\tca.storage = ctx.Storage()\n\t}\n\tif len(ca.PEMKeys) == 0 {\n\t\treturn fmt.Errorf(\"no PEM keys specified\")\n\t}\n\tcaPool := x509.NewCertPool()\n\tvar certs []*x509.Certificate\n\tfor _, caID := range ca.PEMKeys {\n\t\tbs, err := ca.storage.Load(ctx, caID)\n\t\tif err != nil {\n\t\t\treturn fmt.Errorf(\"error loading cert '%s' from storage: %s\", caID, err)\n\t\t}\n\t\t// Parse PEM to extract certificates\n\t\tpemData := bs","sourceCodeStart":396,"sourceCodeEnd":432,"githubUrl":"https://github.com/caddyserver/caddy/blob/50e54ee279aa1e504fe218ca49ab6ae16c100410/modules/caddytls/capools.go#L396-L432","documentation":"After loading the storage module for a storage trust pool, its CertMagicStorage() conversion failed, so the module could not produce a certmagic.Storage implementation to read certificates from. This means the module loaded but its storage backend initialization errored.","triggerScenarios":"The configured storage module's CertMagicStorage() returns an error — e.g. a file_system storage with an unwritable/nonexistent root, or a remote storage (redis/s3/etc.) that cannot be reached or has invalid connection settings.","commonSituations":"Storage root directory missing or wrong permissions; connection string secrets missing or wrong; backend service down at config load time.","solutions":["Fix the storage module's own settings (create the root directory, correct paths/addresses/credentials).","Verify connectivity and permissions of the storage backend from the Caddy host (e.g. `ls` the directory, ping the redis endpoint).","Check the wrapped error text — it comes from the storage module and names the exact backend failure."],"exampleFix":"# before\ntrust_pool storage {\n  storage file_system {\n    root /var/lib/caddy-missing\n  }\n  trusted_ca_certs_pem files/*.pem\n}\n\n# after\ntrust_pool storage {\n  storage file_system {\n    root /var/lib/caddy/certs\n  }\n  trusted_ca_certs_pem files/*.pem\n}","handlingStrategy":"try-catch","validationCode":"// pre-flight the storage backend where possible, e.g. file_system root\nimport \"os\"\n\nfunc storageRootReady(root string) error {\n\tinfo, err := os.Stat(root)\n\tif err != nil {\n\t\treturn fmt.Errorf(\"storage root %s: %w\", root, err)\n\t}\n\tif !info.IsDir() {\n\t\treturn fmt.Errorf(\"storage root %s is not a directory\", root)\n\t}\n\treturn nil\n}","typeGuard":null,"tryCatchPattern":"// the wrapped error names the backend cause; log and fail the deploy, don't retry blindly\nif err := pool.Provision(ctx); err != nil {\n\tif strings.Contains(err.Error(), \"creating storage configuration\") {\n\t\t// inspect inner error: fix backend (dirs, credentials, reachability) then reload\n\t}\n\treturn err\n}","preventionTips":["Provision storage prerequisites (directories, credentials, network reachability) with config management before Caddy reloads.","Health-check remote storage backends as part of deploy gates.","Keep storage credentials in env/secrets, referenced by the config, and rotate with a paired reload."],"tags":["caddy","caddytls","storage","backend","configuration"],"backgroundTag":null,"analyzedSha":"50e54ee279aa1e504fe218ca49ab6ae16c100410","analyzedAt":"2026-08-15T09:20:21.641Z","schemaVersion":2},"datasetVersion":"2026-08-15T17:31:12.345Z"}