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k3s: add tokenFile option

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To avoid having secrets in the nix store.
This commit is contained in:
Jörg Thalheim 2021-04-09 11:50:03 +02:00
parent 852739337b
commit 11a38f62f0
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1 changed files with 19 additions and 4 deletions
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23
nixos/modules/services/cluster/k3s/default.nix
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@ -35,10 +35,20 @@ in
token = mkOption {
type = types.str;
description = "The k3s token to use when connecting to the server. This option only makes sense for an agent.";
description = ''
The k3s token to use when connecting to the server. This option only makes sense for an agent.
WARNING: This option will expose store your token unencrypted world-readable in the nix store.
If this is undesired use the tokenFile option instead.
'';
default = "";
};
tokenFile = mkOption {
type = types.nullOr types.path;
description = "File path containing k3s token to use when connecting to the server. This option only makes sense for an agent.";
default = null;
};
docker = mkOption {
type = types.bool;
default = false;
@ -68,8 +78,8 @@ in
message = "serverAddr should be set if role is 'agent'";
}
{
assertion = cfg.role == "agent" -> cfg.token != "";
message = "token should be set if role is 'agent'";
assertion = cfg.role == "agent" -> cfg.token != "" || cfg.tokenFile != null;
message = "token or tokenFile should be set if role is 'agent'";
}
];
@ -104,7 +114,12 @@ in
"${cfg.package}/bin/k3s ${cfg.role}"
] ++ (optional cfg.docker "--docker")
++ (optional cfg.disableAgent "--disable-agent")
++ (optional (cfg.role == "agent") "--server ${cfg.serverAddr} --token ${cfg.token}")
++ (optional (cfg.role == "agent") "--server ${cfg.serverAddr} ${
if cfg.tokenFile != null then
"--token-file ${cfg.tokenFile}"
else
"--token ${cfg.token}"
}")
++ [ cfg.extraFlags ]
);
};