{"record":{"id":"ae841f7cc2c97a48","repo":"hashicorp/nomad","slug":"unable-to-convert-user-s-group-q-to-integer-w","errorCode":null,"errorMessage":"unable to convert user's group %q to integer: %w","messagePattern":"unable to convert user's group %q to integer: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"drivers/shared/validators/validators_unix.go","lineNumber":34,"sourceCode":"\tif err != nil {\n\t\treturn 0, fmt.Errorf(\"unable to convert userid %s to integer\", user.Uid)\n\t}\n\n\treturn UserID(id), nil\n}\n\nfunc getGroupsID(user *user.User) ([]GroupID, error) {\n\tgidStrings, err := user.GroupIds()\n\tif err != nil {\n\t\treturn []GroupID{}, fmt.Errorf(\"unable to lookup user's group membership: %w\", err)\n\t}\n\n\tgids := make([]GroupID, len(gidStrings))\n\n\tfor _, gidString := range gidStrings {\n\t\tu, err := strconv.ParseUint(gidString, 10, 32)\n\t\tif err != nil {\n\t\t\treturn []GroupID{}, fmt.Errorf(\"unable to convert user's group %q to integer: %w\", gidString, err)\n\t\t}\n\n\t\tgids = append(gids, GroupID(u))\n\t}\n\n\treturn gids, nil\n}\n","sourceCodeStart":16,"sourceCodeEnd":42,"githubUrl":"https://github.com/hashicorp/nomad/blob/482b49bf1aec006f089bcfc7e632d8f6ac303e5e/drivers/shared/validators/validators_unix.go#L16-L42","documentation":"After GroupIds() returns gid strings, getGroupsID parses each one with strconv.ParseUint; this error indicates one of the returned group id strings could not be converted to an unsigned 32-bit integer. The whole group list is discarded and HasValidIDs fails with 'validator: ...'.","triggerScenarios":"Calling Validator.HasValidIDs(userName) when the OS/NSS returns a group membership list containing an empty, non-numeric, or >uint32 gid string for that user.","commonSituations":"Corrupt /etc/group entries or malformed gids from LDAP/SSSD; gid values exceeding 2^32-1 from a directory service; partially-written group database during system provisioning.","solutions":["Run 'id <username>' to see the raw gid list and identify the malformed gid","Fix the offending group entry in /etc/group or in the directory service (give it a numeric gid within uint32 range)","Remove the user from the group with the malformed gid","If a directory service hands out gids > 4294967295, remap those groups to valid gids"],"exampleFix":"// before (bad /etc/group entry)\nbrokengrp:x:1e4:user1\n// after\nbrokengrp:x:15000:user1","handlingStrategy":"validation","validationCode":"for _, g := range strings.Fields(userGidListOutput) {\n\tif _, err := strconv.ParseUint(g, 10, 32); err != nil {\n\t\treturn fmt.Errorf(\"host group database has malformed gid %q\", g)\n\t}\n}","typeGuard":"func validGID(gid string) bool {\n\t_, err := strconv.ParseUint(gid, 10, 32)\n\treturn err == nil\n}","tryCatchPattern":null,"preventionTips":["Audit /etc/group for non-numeric gid fields after provisioning","Ensure directory services assign numeric gids within uint32 range","Run 'id <user>' smoke tests before task launch","Avoid importing group data from unvalidated external sources"],"tags":["unix","groups","parsing"],"backgroundTag":"invalid-group-id","analyzedSha":"482b49bf1aec006f089bcfc7e632d8f6ac303e5e","analyzedAt":"2026-09-04T07:54:14.808Z","contentChangedAt":"2026-09-04T07:54:14.808Z","schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}