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agents: read the hive's name and domain at runtime, not from the build

Part of #5081 (slice S0-1a). An agent's closure no longer depends on the
name or domain of the hive that renders it.

- hive-priv writes /etc/hyperhive-hive-facts (HYPERHIVE_HIVE_NAME,
  HYPERHIVE_HIVE_DOMAIN) into the container from the same WriteNspawnFlags
  call that writes /etc/hyperhive-bridge-dns. hive-c0re passes the values
  from its own unit env. hive-priv refuses a value outside [A-Za-z0-9._-].
- A systemd environment generator in the agent (hive-facts.nix) loads the
  file into the container manager's environment, so every unit sees it,
  as with the systemd.globalEnvironment entries the render used to emit.
  It also builds CLAUDE_REMOTE_CONTROL_SESSION_NAME_PREFIX
  (<hive>-<agent>), which left claude's managed settings.
- meta.rs stops forwarding HYPERHIVE_HIVE_{NAME,DOMAIN} and stops setting
  services.hyperhive.agent.hiveName. The option is removed (both
  spellings now fail with a removal message).
- otel.nix drops the agent's hive= resource label. The swarm collector
  upserts hive per authenticated receiver (swarm-otel.nix resource/<h>,
  on both the metrics and logs pipelines), so stored series keep it.

The otel first hop, otel enable and the dashboard port are still baked;
they are S0-1b.
This commit is contained in:
atlas 2026-10-12 04:40:13 +02:00 • committed by mara
commit c87a4d2c1a
14 changed files with 303 additions and 127 deletions

View file

@ -38,6 +38,13 @@ Four env vars cover the identity surface, read by
federated hives at different DNS domains can share a swarm
name.
Inside an agent container, the hive's name and domain don't come from the
agent's build. `hive-priv` writes them to `/etc/hyperhive-hive-facts` before
every container start, and the agent's environment generator
(`nix/agent-modules/hive-facts.nix`) passes them to every unit. Neither is
part of an agent's closure, and an agent started on another hive reports
that hive.
`hive_name` + `swarm_name` are **distinct** from
`HYPERHIVE_HIVE_DOMAIN`: the domain may carry the hive name as
its leftmost label by convention, but the convention isn't

View file

@ -193,9 +193,12 @@ automatically:
| -------------- | ------------------------------------------------------------ |
| `service.name` | `hyperhive-agent` (constant) |
| `agent` | agent logical name (for example `iris`) |
| `hive` | hive display name (`services.hyperhive.hiveName`) |
| `swarm` | swarm display name (`services.hyperhive.swarm.name`, if set) |
The swarm's collector adds `hive`, the name of the hive whose receiver accepted
the push (see [Authenticated ingest](#authenticated-ingest)). The container
doesn't set it.
Append additional labels via `extraResourceAttributes` (see option
reference above); pass custom per-data-point labels with
`hive-metric --labels` (see below).
@ -368,10 +371,10 @@ API-reported window, else the model's default. A turn that parsed no usage
leaves both where the previous turn put them. The dashboard's **Context
window used by agent** panel (health tab) divides one by the other.
Resource attributes (`service.name`, `agent`, `hive`, `swarm`) come from the
Resource attributes (`service.name`, `agent`, `swarm`) come from the
same container-wide `OTEL_RESOURCE_ATTRIBUTES` as everything else in this
section — nothing extra to configure. Cadence follows
`HYPERHIVE_OTEL_METRIC_INTERVAL_MS` (default 60s, same variable + default as
section, and the swarm's collector adds `hive` — nothing extra to configure.
Cadence follows `HYPERHIVE_OTEL_METRIC_INTERVAL_MS` (default 60s, same variable + default as
`hive-c0re`'s container-resource export above) — that only controls how often
the harness flushes the batched points to the collector, not how often it
records them (every turn, always).
@ -479,7 +482,7 @@ hive-metric <name> <value> [--type counter|gauge] [--temporality delta|cumulativ
itself).
- `--labels key=value` — extra per-data-point labels. Repeat the flag for
more than one.
`hive-metric` inherits the resource labels (agent, hive, swarm, service.name)
`hive-metric` inherits the resource labels (agent, swarm, service.name)
automatically from `OTEL_RESOURCE_ATTRIBUTES` — don't re-specify them.
### Examples

View file

@ -260,7 +260,7 @@ needs to `chown` a bind mount), once at startup:
substituted: `{label}` (short agent name), `{qualified_label}`
(hive-qualified `name@domain` form), `{operator_pronouns}`,
`{hive_identity}` (for example `` on hive `pr1ma` ``; empty when
`services.hyperhive.agent.hiveName` is unset), and `{swarm_identity}` (same
`HYPERHIVE_HIVE_NAME` is unset), and `{swarm_identity}` (same
shape for the swarm). Pronouns come from `HIVE_OPERATOR_PRONOUNS`
env (set by the meta flake from
`services.hyperhive.c0re.operatorPronouns`, default `she/her`).

View file

@ -476,7 +476,14 @@ async fn set_nspawn_flags(
);
// Delegate the actual conf-file rewrite to hive-priv (runs as root).
crate::priv_client::write_nspawn_flags(container, &binds, isolation, &load_creds).await
crate::priv_client::write_nspawn_flags(
container,
&binds,
isolation,
&load_creds,
super::hive_facts_from_env(),
)
.await
}
#[cfg(test)]

View file

@ -177,6 +177,17 @@ pub fn network_isolation_from_env() -> Result<hive_priv_sock::NetworkIsolation>
network_isolation_from_vars(bridge.as_deref(), subnet.as_deref())
}
/// The hive's facts every container is handed at runtime, from hive-c0re's
/// own unit environment (`nix/host-modules/hive-c0re/environment.nix`). An
/// unset or empty variable is `None`.
fn hive_facts_from_env() -> hive_priv_sock::HiveFacts {
let read = |name: &str| std::env::var(name).ok().filter(|v| !v.is_empty());
hive_priv_sock::HiveFacts {
name: read("HYPERHIVE_HIVE_NAME"),
domain: read("HYPERHIVE_HIVE_DOMAIN"),
}
}
fn validate(name: &str) -> Result<()> {
if name.is_empty() {
bail!("agent name must not be empty");

View file

@ -508,8 +508,6 @@ const FORWARDED_VARS: &[&str] = &[
"HIVE_FORGE_URL",
"HIVE_FORGE_PUBLIC_URL",
"HIVE_MATRIX_URL",
"HYPERHIVE_HIVE_DOMAIN",
"HYPERHIVE_HIVE_NAME",
"HYPERHIVE_SWARM_NAME",
];
@ -520,14 +518,11 @@ const FORWARDED_VARS: &[&str] = &[
/// var is read at runtime. Setting only one leaves the other on its default,
/// which is how a hive ends up with two disagreeing answers for one value.
///
/// The hive/swarm display names are here for exactly that reason, learned the
/// hard way: they were forwarded as runtime env only, while the agent's
/// claude-settings module read them from the container's `environment.variables`
/// at *eval* time — where they were never set. Every agent baked
/// `hive=unknown,swarm=unknown` into its OTEL resource attributes and shipped
/// that label on every metric, while the same process's env held the right
/// answer. Half-wiring this map is not a missing nicety; it is a value that
/// evaluates fine and is silently wrong.
/// The swarm display name is here for that reason: `otel.nix` reads the option
/// at eval time for the `swarm=` resource label, and with the env var alone
/// that label evaluates to `unknown` while the process env holds the right
/// name. Half-wiring this map is a value that evaluates fine and is silently
/// wrong.
const FORWARDED_VAR_OPTIONS: &[(&str, &str)] = &[
// Read at build time to decide whether the harness unit imports the hive's
// queue credential at all — see `nix/agent-modules/queue.nix`. Both halves
@ -558,7 +553,6 @@ const FORWARDED_VAR_OPTIONS: &[(&str, &str)] = &[
),
("HIVE_FORGE_URL", "services.hyperhive.agent.forge.url"),
("HIVE_MATRIX_URL", "services.hyperhive.agent.matrix.url"),
("HYPERHIVE_HIVE_NAME", "services.hyperhive.agent.hiveName"),
("HYPERHIVE_SWARM_NAME", "services.hyperhive.agent.swarmName"),
];
@ -1164,9 +1158,7 @@ where
// → in-container accessors fall back to None / defaults gracefully.
//
// - HIVE_FORGE_URL: agents poll this for Forgejo notifications.
// - HYPERHIVE_HIVE_DOMAIN: machine-readable hive DNS.
// - HYPERHIVE_HIVE_NAME / HYPERHIVE_SWARM_NAME: human display
// names for hive + swarm.
// - HYPERHIVE_SWARM_NAME: human display name for the swarm.
for (var, val) in forwarded_env_vars() {
let escaped = val.replace('\\', "\\\\").replace('"', "\\\"");
let _ = writeln!(out, " {var} = \"{escaped}\";");
@ -1770,6 +1762,53 @@ mod tests {
);
}
/// The hive's name and domain reach an agent at runtime
/// (`/etc/hyperhive-hive-facts`), so the rendered flake does not change with
/// either.
#[test]
fn render_flake_is_identical_across_hive_names_and_domains() {
const VARS: [&str; 2] = ["HYPERHIVE_HIVE_NAME", "HYPERHIVE_HIVE_DOMAIN"];
let _env = crate::test_env::lock();
let saved = VARS.map(std::env::var_os);
let render_on = |name: &str, domain: &str| {
// SAFETY: serialised by the guard above; restored before returning.
unsafe {
std::env::set_var(VARS[0], name);
std::env::set_var(VARS[1], domain);
}
render_flake(
"github:example/hyperhive",
"path:/nix/store/bbbb-hyperhive-docs-source",
"path:/nix/store/aaaa-nixpkgs-source",
None,
8000,
"she/her",
&std::collections::HashMap::new(),
"4G",
&[sample_spec("alice", false, 9001)],
)
.expect("render flake")
};
let alpha = render_on("alpha-hive", "alpha-hive.example.test");
let beta = render_on("beta-hive", "beta-hive.example.test");
for (var, value) in VARS.iter().zip(saved) {
// SAFETY: as above.
unsafe {
match value {
Some(v) => std::env::set_var(var, v),
None => std::env::remove_var(var),
}
}
}
for hive in ["alpha-hive", "beta-hive"] {
assert!(
!alpha.contains(hive) && !beta.contains(hive),
"the rendered flake must not name the hive ({hive}):\n{alpha}"
);
}
assert_eq!(alpha, beta, "the render must not depend on the hive");
}
#[test]
fn service_url_options_render_from_forwarded_pairs() {
// Pure over the pairs, deliberately: the render-level tests have to
@ -1782,21 +1821,21 @@ mod tests {
&[
("HIVE_FORGE_URL", "http://forge.example.test".to_string()),
("HIVE_MATRIX_URL", "http://matrix.example.test".to_string()),
// Mapped too, and that is the fix this test now guards: the
// display names used to be forwarded as runtime env *only*,
// so the build-time reader fell back to "unknown" and every
// agent shipped that label on every metric.
("HYPERHIVE_HIVE_NAME", "pr1ma".to_string()),
// Mapped too: `otel.nix` reads the option at eval time.
("HYPERHIVE_SWARM_NAME", "constellat1on".to_string()),
// Forwarded but genuinely unmapped — proves the map is a
// filter, not a pass-through.
("HYPERHIVE_HIVE_DOMAIN", "pr1ma.darkest.space".to_string()),
(
"HIVE_FORGE_PUBLIC_URL",
"https://forge.example.test".to_string(),
),
],
);
assert_eq!(
out,
" services.hyperhive.agent.forge.url = \"http://forge.example.test\";\n\
\x20 services.hyperhive.agent.matrix.url = \"http://matrix.example.test\";\n\
\x20 services.hyperhive.agent.hiveName = \"pr1ma\";\n",
\x20 services.hyperhive.agent.swarmName = \"constellat1on\";\n",
"expected exactly the mapped options, in input order, indented for the module block"
);
}
@ -1836,7 +1875,7 @@ mod tests {
fn require_service_urls_accepts_a_rendered_forge_url() {
require_service_urls(&[
("HIVE_FORGE_URL", "http://forge.example.test".to_string()),
("HYPERHIVE_HIVE_NAME", "pr1ma".to_string()),
("HYPERHIVE_SWARM_NAME", "constellat1on".to_string()),
])
.expect("a forwarded forge URL satisfies the requirement");
}
@ -1847,7 +1886,7 @@ mod tests {
// every agent would simply come up with no forge login and no way to
// tell that was unintended. The hive asserts its own requirement
// because it is the only layer that knows a forge is mandatory.
let err = require_service_urls(&[("HYPERHIVE_HIVE_NAME", "pr1ma".to_string())])
let err = require_service_urls(&[("HYPERHIVE_SWARM_NAME", "constellat1on".to_string())])
.expect_err("a missing forge URL must stop the write");
assert!(
err.to_string().contains("HIVE_FORGE_URL is unset"),
@ -1862,13 +1901,16 @@ mod tests {
// so absence is an absent integration rather than a misdirected one.
// Required services don't reach here: `require_service_urls` rejects
// them first.
// `HYPERHIVE_HIVE_DOMAIN` is forwarded as env but carries no option —
// `HIVE_FORGE_PUBLIC_URL` is forwarded as env but carries no option —
// deliberately picked over a mapped var, since the whole point is a
// forwarded var the option map does not know about.
let mut out = String::new();
push_forwarded_var_options(
&mut out,
&[("HYPERHIVE_HIVE_DOMAIN", "pr1ma.darkest.space".to_string())],
&[(
"HIVE_FORGE_PUBLIC_URL",
"https://forge.example.test".to_string(),
)],
);
assert!(
out.is_empty(),

View file

@ -8,7 +8,7 @@
use anyhow::{Context as _, Result, bail};
use hive_priv_sock::{
BindMount, CredentialMount, InfraAction, InfraContainer, MEASURE_AGENT_DISK_TIMEOUT,
BindMount, CredentialMount, HiveFacts, InfraAction, InfraContainer, MEASURE_AGENT_DISK_TIMEOUT,
NetworkIsolation, PRIV_SOCK, PrivEvent, PrivRequest, PrivResponse, PrivStream,
};
use std::os::fd::{AsRawFd as _, OwnedFd, RawFd};
@ -288,12 +288,14 @@ pub async fn write_nspawn_flags(
binds: &[BindMount],
isolation: NetworkIsolation,
load_credentials: &[CredentialMount],
hive_facts: HiveFacts,
) -> Result<()> {
ok(call(&PrivRequest::WriteNspawnFlags {
container: container.to_owned(),
binds: binds.to_vec(),
isolation,
load_credentials: load_credentials.to_vec(),
hive_facts,
})
.await?)
}

View file

@ -232,6 +232,18 @@ pub struct NetworkIsolation {
pub gateway_ip: String,
}
/// Facts about the hive a container runs on, for `WriteNspawnFlags`.
/// hive-priv writes them into the container's `/etc/hyperhive-hive-facts`,
/// which the agent loads into its environment at boot, so no agent build
/// carries them. A `None` field leaves that variable unset in the agent.
#[derive(Debug, Clone, Default, Serialize, Deserialize)]
pub struct HiveFacts {
/// `HYPERHIVE_HIVE_NAME`: the hive's name (`pr1ma`).
pub name: Option<String>,
/// `HYPERHIVE_HIVE_DOMAIN`: the hive's DNS domain.
pub domain: Option<String>,
}
/// Wall-clock bound hive-priv puts on one [`PrivRequest::MeasureAgentDisk`]
/// walk. A caller's own wait has to be longer than this, so a slow walk
/// reaches it as hive-priv's timeout error rather than as its own.
@ -306,6 +318,10 @@ pub enum PrivRequest {
/// so a hive-priv built before this field deserialises new requests.
#[serde(default)]
load_credentials: Vec<CredentialMount>,
/// Written to the container's `/etc/hyperhive-hive-facts` on every
/// call, so a fact the hive no longer has is removed, not kept.
#[serde(default)]
hive_facts: HiveFacts,
},
/// Create the agent's socket dir `/run/hive-agent/<name>` as `0751

View file

@ -22,10 +22,10 @@ use std::path::{Path, PathBuf};
use anyhow::{Context as _, Result, anyhow, bail};
use hive_priv_sock::{
AGENT_PREFIX, AGENT_RUNTIME_ROOT, AGENT_STATE_ROOT, BindMount, CredentialMount, InfraAction,
InfraContainer, MEASURE_AGENT_DISK_TIMEOUT, META_DIR, MIGRATE_STAGING_ROOT, NetworkIsolation,
PAUSED_MARKER_FILE, PRIV_SOCK, PrivEvent, PrivRequest, PrivResponse, PrivStream,
PrivStreamLine, SIBLING_CONTAINERS,
AGENT_PREFIX, AGENT_RUNTIME_ROOT, AGENT_STATE_ROOT, BindMount, CredentialMount, HiveFacts,
InfraAction, InfraContainer, MEASURE_AGENT_DISK_TIMEOUT, META_DIR, MIGRATE_STAGING_ROOT,
NetworkIsolation, PAUSED_MARKER_FILE, PRIV_SOCK, PrivEvent, PrivRequest, PrivResponse,
PrivStream, PrivStreamLine, SIBLING_CONTAINERS,
};
use tokio::io::{AsyncWriteExt, BufReader};
use tokio::net::unix::OwnedWriteHalf;
@ -377,7 +377,8 @@ async fn exec(
ref binds,
ref isolation,
ref load_credentials,
} => handle_write_nspawn_flags(container, binds, isolation, load_credentials),
ref hive_facts,
} => handle_write_nspawn_flags(container, binds, isolation, load_credentials, hive_facts),
PrivRequest::EnsureAgentSocketDir { ref name } => ensure_agent_socket_dir(name),
@ -984,6 +985,7 @@ fn handle_write_nspawn_flags(
binds: &[BindMount],
isolation: &NetworkIsolation,
load_credentials: &[CredentialMount],
hive_facts: &HiveFacts,
) -> Result<(String, String)> {
validate_container_system_name(container)?;
for bind in binds {
@ -997,7 +999,8 @@ fn handle_write_nspawn_flags(
// uses `:` as the name/path separator.
validate_bind_path(&cred.host_path)?;
}
write_nspawn_flags(container, binds, isolation, load_credentials)?;
let hive_facts = render_hive_facts(hive_facts)?;
write_nspawn_flags(container, binds, isolation, load_credentials, &hive_facts)?;
Ok((String::new(), String::new()))
}
@ -2870,6 +2873,7 @@ fn write_nspawn_flags(
binds: &[BindMount],
isolation: &NetworkIsolation,
load_credentials: &[CredentialMount],
hive_facts: &str,
) -> Result<()> {
use std::fmt::Write as _;
use std::os::unix::fs::MetadataExt as _;
@ -2950,36 +2954,78 @@ fn write_nspawn_flags(
// and which unit does it: `docs/networking/network.md` § *How the isolated
// container gets its resolver*.
write_bridge_dns_marker(container, isolation)?;
// Read by the agent's environment generator at boot
// (`nix/agent-modules/hive-facts.nix`).
write_container_etc_file_in(&container_rootfs(container), HIVE_FACTS_FILE, hive_facts)?;
Ok(())
}
/// Filename of the in-container DNS marker, in the container's own `/etc`.
const BRIDGE_DNS_MARKER: &str = "hyperhive-bridge-dns";
/// Filename of the hive-facts environment file, in the container's own `/etc`.
const HIVE_FACTS_FILE: &str = "hyperhive-hive-facts";
/// The container's `/` on the host.
fn container_rootfs(container: &str) -> PathBuf {
PathBuf::from(format!("/var/lib/nixos-containers/{container}"))
}
/// Render [`HiveFacts`] as the systemd environment file the agent loads,
/// one `KEY=value` line per present fact.
///
/// A value is refused unless it is DNS-name characters only, so it can carry
/// neither a newline (a second assignment) nor anything an environment file
/// or a shell would interpret.
fn render_hive_facts(facts: &HiveFacts) -> Result<String> {
use std::fmt::Write as _;
let mut out = String::new();
for (key, value) in [
("HYPERHIVE_HIVE_NAME", &facts.name),
("HYPERHIVE_HIVE_DOMAIN", &facts.domain),
] {
let Some(value) = value else { continue };
if value.is_empty()
|| value.len() > 253
|| !value
.bytes()
.all(|b| b.is_ascii_alphanumeric() || matches!(b, b'.' | b'-' | b'_'))
{
bail!("invalid {key} value {value:?}: must be 1-253 chars of [A-Za-z0-9._-]");
}
let _ = writeln!(out, "{key}={value}");
}
Ok(out)
}
/// Write the bridge-DNS marker the `hyperhive-isolated-dns` oneshot keys
/// off. The marker file contains just the gateway IP. Always written:
/// every container is isolated, so there is no host-netns case that
/// wants the marker absent.
fn write_bridge_dns_marker(container: &str, isolation: &NetworkIsolation) -> Result<()> {
let rootfs = PathBuf::from(format!("/var/lib/nixos-containers/{container}"));
write_bridge_dns_marker_in(&rootfs, &isolation.gateway_ip)
write_bridge_dns_marker_in(&container_rootfs(container), &isolation.gateway_ip)
}
/// Write `<rootfs>/etc/hyperhive-bridge-dns` without following a symlink.
/// Write `<rootfs>/etc/hyperhive-bridge-dns`; see [`write_container_etc_file_in`].
fn write_bridge_dns_marker_in(rootfs: &Path, gateway_ip: &str) -> Result<()> {
write_container_etc_file_in(rootfs, BRIDGE_DNS_MARKER, &format!("{gateway_ip}\n"))
}
/// Write `<rootfs>/etc/<name>` without following a symlink.
///
/// Root inside the container owns its `/etc`, and this write runs as host
/// root, where an absolute symlink planted in the container resolves against
/// the host's `/`. So this opens `etc` with `O_DIRECTORY|O_NOFOLLOW` (a
/// symlinked `etc` fails with `ELOOP`) and publishes the marker through a
/// symlinked `etc` fails with `ELOOP`) and publishes the file through a
/// [`StagedFile`] relative to that fd: whatever the container planted at the
/// leaf, symlink or FIFO or device node, is replaced by the rename, never
/// written through or opened.
///
/// On a fresh install the container's `/etc` may not exist yet (nixos-container
/// materialises the rootfs on the first start), so this creates it first; the
/// dir and the marker persist through that start. Mode 0644: the gateway IP
/// is not a secret.
fn write_bridge_dns_marker_in(rootfs: &Path, gateway_ip: &str) -> Result<()> {
/// dir and the file persist through that start. Mode 0644: nothing written
/// here is a secret.
fn write_container_etc_file_in(rootfs: &Path, name: &str, contents: &str) -> Result<()> {
use std::os::unix::fs::OpenOptionsExt as _;
let etc_path = rootfs.join("etc");
@ -3014,14 +3060,7 @@ fn write_bridge_dns_marker_in(rootfs: &Path, gateway_ip: &str) -> Result<()> {
}
// SAFETY: `etc_fd` is a fresh, valid fd that nothing else owns.
let etc = std::fs::File::from(unsafe { OwnedFd::from_raw_fd(etc_fd) });
StagedFile::write(
&etc,
&etc_path,
BRIDGE_DNS_MARKER,
format!("{gateway_ip}\n").as_bytes(),
0o644,
)?
.publish()
StagedFile::write(&etc, &etc_path, name, contents.as_bytes(), 0o644)?.publish()
}
/// Written by older hive-priv builds. Nothing writes it now, but left on disk
@ -3124,13 +3163,14 @@ fn ensure_socket_dir_in(root: &Path, name: &str) -> Result<()> {
#[cfg(test)]
mod tests {
use super::{
BindMount, BoundedRun, Command, OwnedFd, PAUSED_MARKER_FILE, PrivRequest, StagedFile,
agent_disk_paths, check_fd_agreement, contains_secret_shaped_run, describe_forge_admin,
du_command, du_total, ensure_plain_filename, ensure_socket_dir_in, exec_measure_agent_disk,
git_overlay_flags, limits_dropin_body, open_dir, open_export_dest, parse_du_total,
partial_name, publish_file, redact_secret_line, remove_marker_in, run_bounded,
single_output_path, toplevel_attr, validate_credential_name, validate_snapshot_name,
write_agent_dir_file, write_bridge_dns_marker_in,
BindMount, BoundedRun, Command, HiveFacts, OwnedFd, PAUSED_MARKER_FILE, PrivRequest,
StagedFile, agent_disk_paths, check_fd_agreement, contains_secret_shaped_run,
describe_forge_admin, du_command, du_total, ensure_plain_filename, ensure_socket_dir_in,
exec_measure_agent_disk, git_overlay_flags, limits_dropin_body, open_dir, open_export_dest,
parse_du_total, partial_name, publish_file, redact_secret_line, remove_marker_in,
render_hive_facts, run_bounded, single_output_path, toplevel_attr,
validate_credential_name, validate_snapshot_name, write_agent_dir_file,
write_bridge_dns_marker_in,
};
use std::path::PathBuf;
use std::sync::atomic::{AtomicU32, Ordering};
@ -3782,6 +3822,45 @@ mod tests {
std::fs::remove_dir_all(&dir).ok();
}
/// Each present fact is one environment-file line; an absent one writes
/// nothing, so the agent sees the variable unset rather than empty.
#[test]
fn hive_facts_render_one_line_per_present_fact() {
let both = HiveFacts {
name: Some("pr1ma".to_owned()),
domain: Some("pr1ma.darkest.space".to_owned()),
};
assert_eq!(
render_hive_facts(&both).unwrap(),
"HYPERHIVE_HIVE_NAME=pr1ma\nHYPERHIVE_HIVE_DOMAIN=pr1ma.darkest.space\n"
);
let domain_only = HiveFacts {
name: None,
domain: Some("h1.example.test".to_owned()),
};
assert_eq!(
render_hive_facts(&domain_only).unwrap(),
"HYPERHIVE_HIVE_DOMAIN=h1.example.test\n"
);
assert_eq!(render_hive_facts(&HiveFacts::default()).unwrap(), "");
}
/// A value that could end its line or be read as syntax is refused, not
/// escaped: a newline would add an assignment of the caller's choosing.
#[test]
fn hive_facts_refuse_values_outside_dns_characters() {
for bad in ["", "pr1ma\nLD_PRELOAD=/x", "a b", "a\"b", "$(x)"] {
let facts = HiveFacts {
name: Some(bad.to_owned()),
domain: None,
};
assert!(
render_hive_facts(&facts).is_err(),
"{bad:?} must be refused"
);
}
}
/// Whether `pid` is gone, or only a zombie awaiting its reaper: either
/// way it is no longer running.
fn is_dead(pid: &str) -> bool {

View file

@ -19,17 +19,6 @@ let
# meta.rs `otel_config`). Options declared in `otel.nix`, which also
# exports the generic OTLP environment this container's producers read.
otelCfg = config.services.hyperhive.agent.otel;
# Hive display name, read from the per-agent option meta.rs renders
# (NOT from `environment.variables` — that carries the same name at
# *runtime* only, so reading it here silently yielded "unknown" on
# every agent while the process env held the right answer). `null`
# means the hive did not name itself; "unknown" is then an honest label
# rather than a guess.
hiveDisplayName =
if config.services.hyperhive.agent.hiveName == null then
"unknown"
else
config.services.hyperhive.agent.hiveName;
# Effective per-agent MemoryMax=, in bytes, injected by meta.rs's
# per-agent flake render (`services.hyperhive.agent.claudeMemoryMaxBytes`). `null`
# when the effective cap is unbounded ("infinity") or a RAM
@ -58,8 +47,6 @@ let
CLAUDE_CODE_RESUME_INTERRUPTED_TURN = "1";
# Use the simpler system prompt variant suited to headless operation.
CLAUDE_CODE_SIMPLE_SYSTEM_PROMPT = "1";
# Tag remote-control sessions with "<hive>-<agent>" for identification.
CLAUDE_REMOTE_CONTROL_SESSION_NAME_PREFIX = "${hiveDisplayName}-${userName}";
}
# Bun/JavaScriptCore (the runtime under claude-code's `.claude-wrapped`
# binary) sizes its default heap ceiling off the container's visible
@ -97,6 +84,21 @@ let
};
in
{
options.services.hyperhive.agent.swarmName = lib.mkOption {
type = lib.types.nullOr lib.types.str;
default = null;
internal = true;
description = ''
Human-readable swarm name, rendered per-agent by
`meta.rs::render_flake` from the host's
`services.hyperhive.swarm.name`. Read during evaluation for the
OTEL `swarm` resource label; `HYPERHIVE_SWARM_NAME` carries the
same value at runtime.
`null` means the hive is not part of a named swarm.
'';
};
# Build-time implementation surface for the JSC-heap-ceiling fix:
# meta.rs's per-agent flake render injects this from the effective
# `MemoryMax=` (per-agent `resource-limits.json` override, else the
@ -108,37 +110,6 @@ in
# the agent's *last rebuild* — `set-limits` still applies the
# cgroup cap live via a drop-in reload, but this derived heap ceiling
# needs a rebuild to pick up a new value.
options.services.hyperhive.agent.hiveName = lib.mkOption {
type = lib.types.nullOr lib.types.str;
default = null;
internal = true;
description = ''
Human-readable hive name, rendered per-agent by
`meta.rs::render_flake` from the host's
`services.hyperhive.hiveName`. Baked into the OTEL resource
attributes at build time, which is why it is an option and not
just the `HYPERHIVE_HIVE_NAME` env var: the env var is read at
runtime, this is read during evaluation, and wiring only one of
the two is how every agent ended up reporting `hive=unknown`.
`null` means the hive did not name itself.
'';
};
options.services.hyperhive.agent.swarmName = lib.mkOption {
type = lib.types.nullOr lib.types.str;
default = null;
internal = true;
description = ''
Human-readable swarm name, rendered per-agent by
`meta.rs::render_flake` from the host's
`services.hyperhive.swarm.name`. Same build-time/runtime split as
`services.hyperhive.agent.hiveName`.
`null` means the hive is not part of a named swarm.
'';
};
options.services.hyperhive.agent.claudeMemoryMaxBytes = lib.mkOption {
type = lib.types.nullOr lib.types.ints.positive;
default = null;
@ -279,7 +250,7 @@ in
# Hive-enforced settings merged with a per-agent `env` block at BUILD
# time via `jq` (not eval-time `readFile`, which would be import-from-
# derivation). The `env` block is always present: `baseClaudeEnv` sets
# behaviour flags and the remote-control session prefix for every agent;
# behaviour flags for every agent;
# `otelSettingsEnv` is merged on top when OTEL is enabled. claude-code
# auto-discovers this file in every context (harness turn-loop AND
# `hivectl choom`) so no launch wrapper is needed.
@ -287,9 +258,8 @@ in
let
baseSettings = "${config.services.hyperhive.agent.packages.assets}/share/hyperhive/prompts/claude-settings.json";
# Merge base env (always) with OTEL env (when enabled). jq is always
# run — `baseClaudeEnv` contains per-agent values (e.g.
# CLAUDE_REMOTE_CONTROL_SESSION_NAME_PREFIX) that can't live in the
# static store asset.
# run — `baseClaudeEnv` can carry per-agent values (e.g.
# BUN_JSC_forceRAMSize) that can't live in the static store asset.
allEnv =
baseClaudeEnv
// lib.optionalAttrs otelCfg.enable otelSettingsEnv

View file

@ -36,6 +36,11 @@ let
See docs/tools/matrix.md.
'';
hiveNameRemoved = ''
An agent reads its hive's name at runtime from /etc/hyperhive-hive-facts,
which the hive writes into every container, so no agent build sets it.
Remove the setting.
'';
in
{
imports = [
@ -51,6 +56,7 @@ in
./frontend.nix
./github.nix
./github-token.nix
./hive-facts.nix
./logs.nix
./matrix.nix
./mcp.nix
@ -85,6 +91,9 @@ in
# breaks evaluation for everyone, removed or not.
(lib.mkRemovedOptionModule [ "hyperhive" "matrix" "enable" ] matrixEnableRemoved)
(lib.mkRemovedOptionModule [ "services" "hyperhive" "agent" "matrix" "enable" ] matrixEnableRemoved)
# Both spellings, for the reason given above.
(lib.mkRemovedOptionModule [ "hyperhive" "hiveName" ] hiveNameRemoved)
(lib.mkRemovedOptionModule [ "services" "hyperhive" "agent" "hiveName" ] hiveNameRemoved)
];
options.services.hyperhive.agent.icon = lib.mkOption {

View file

@ -0,0 +1,37 @@
# The hive this container runs on, read at boot rather than built in, so an
# agent's closure does not carry it.
#
# hive-priv writes `/etc/hyperhive-hive-facts` into the container before every
# start (`HYPERHIVE_HIVE_NAME`, `HYPERHIVE_HIVE_DOMAIN`, one `KEY=value` line
# each). This environment generator hands those lines to the container's
# systemd, which passes them to every unit it starts and to `machinectl shell`
# sessions; a unit's own `Environment=` still overrides them.
{
config,
lib,
pkgs,
...
}:
let
userName = config.services.hyperhive.agent.user.name;
in
{
# Shell builtins only: nothing is assumed on PATH this early. Only the two
# known keys are passed on.
environment.etc."systemd/system-environment-generators/50-hyperhive-hive-facts".source =
pkgs.writeShellScript "hyperhive-hive-facts" ''
hive=unknown
if [ -r /etc/hyperhive-hive-facts ]; then
while IFS='=' read -r key value; do
case "$key" in
HYPERHIVE_HIVE_NAME) hive=$value ;;
HYPERHIVE_HIVE_DOMAIN) ;;
*) continue ;;
esac
printf '%s=%s\n' "$key" "$value"
done < /etc/hyperhive-hive-facts
fi
# Names claude's remote-control sessions `<hive>-<agent>`.
printf 'CLAUDE_REMOTE_CONTROL_SESSION_NAME_PREFIX=%s-%s\n' "$hive" ${lib.escapeShellArg userName}
'';
}

View file

@ -25,17 +25,10 @@
let
cfg = config.services.hyperhive.agent.otel;
userName = config.services.hyperhive.agent.user.name;
# Hive/swarm display names, read from the per-agent options meta.rs
# renders (NOT from `environment.variables` — those carry the same
# names at *runtime* only, so reading them here silently yielded
# "unknown" on every agent while the process env held the right
# answer). `null` means the hive did not name itself; "unknown" is then
# an honest label rather than a guess.
hiveDisplayName =
if config.services.hyperhive.agent.hiveName == null then
"unknown"
else
config.services.hyperhive.agent.hiveName;
# Swarm display name, read from the per-agent option meta.rs renders
# (NOT from `environment.variables`, which carries it at *runtime*
# only). `null` means the swarm is unnamed; "unknown" is then an honest
# label rather than a guess.
swarmDisplayName =
if config.services.hyperhive.agent.swarmName == null then
"unknown"
@ -45,9 +38,11 @@ let
# Resource labels every producer in this container stamps on what it
# emits. `service.name` names the container's role, not one binary
# inside it: claude's samples and `hive-metric`'s both come from this
# agent, and their metric names already tell them apart.
# agent, and their metric names already tell them apart. No `hive`: the
# swarm collector stamps it from the receiver that accepted the hive's
# push (nix/host-modules/swarm-otel.nix), so the build names no hive.
resourceAttributes =
"service.name=hyperhive-agent,agent=${userName},hive=${hiveDisplayName},swarm=${swarmDisplayName}"
"service.name=hyperhive-agent,agent=${userName},swarm=${swarmDisplayName}"
+ lib.optionalString (cfg.extraResourceAttributes != "") ",${cfg.extraResourceAttributes}";
# The variables an OTEL SDK reads on its own, in any language, in any
@ -131,7 +126,7 @@ in
description = ''
Extra comma-separated entries appended to
`OTEL_RESOURCE_ATTRIBUTES` after the built-in
`service.name` / `agent` / `hive` / `swarm` labels.
`service.name` / `agent` / `swarm` labels.
Host-driven via `services.hyperhive.otel.extraResourceAttributes`.
'';
};
@ -274,10 +269,9 @@ in
# Identity the hop above cannot supply. A host-side reader can say
# which machine a line came from; only a collector running as the
# agent can say which agent. `hive` and `swarm` are deliberately
# NOT stamped here even though the env above carries them for
# in-process producers: the swarm tier upserts `hive` from the
# receiver that accepted the sample, precisely so the label comes
# from something the sender cannot write.
# NOT stamped here: the swarm tier upserts both from the receiver
# that accepted the sample, precisely so the labels come from
# something the sender cannot write.
processors.resource.attributes = [
{
key = "service.name";

View file

@ -112,7 +112,6 @@
[ "hyperhive" "gui" "vncPort" ]
[ "services" "hyperhive" "agent" "gui" "vncPort" ]
)
(lib.mkRenamedOptionModule [ "hyperhive" "hiveName" ] [ "services" "hyperhive" "agent" "hiveName" ])
(lib.mkRenamedOptionModule [ "hyperhive" "icon" ] [ "services" "hyperhive" "agent" "icon" ])
(lib.mkRenamedOptionModule
[ "hyperhive" "logs" "queryUrl" ]