Headers never wrap, free text is clipped with the whole on hover, full-width
rows are only notes and forms. The cluster page hides columns empty on every
row and shortens node names; People shows two memberships and a count.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
The replica count, its nodes and the mode selector sit side by side instead
of stacking in a fixed-width cell, and node names drop the prefix every node
shares, with the full name on hover.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Ready of wanted, how many are starting, and the nodes, from the fleet data
the card already reads, so the list answers it without a click.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
The Held tab's model name opens a card: each replica with its node, state,
age, CPU and memory, the room for more found by dry-running the scheduler
on a copy of the inventory, and a form for the always-running and
under-load replica counts. An always-running count placement cannot meet
is refused with the reason. Headroom is also on the admin API.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
One long page made every visit wait on Hugging Face for a list it might not
show. Each tab now has its own address and does only its own work; only
Held reloads while a download runs, and a refused fetch returns to the form
it came from.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
CPU replicas start on half the machine's CPUs, not all of them: two busy
llama.cpp servers each spinning on all 8 vCPUs fell to 0.8 tok/s apiece,
where at 4 threads they keep 5.5. llamacpp.threads sets it per node.
Inference requests can be traced over OTLP/HTTP (tracing.endpoint), with
admission, schedule and upstream spans and traceparent sent to the engine.
Security: onboarding no longer puts the cluster root in the system trust
store and removes it where it was; the mirror's mutual-TLS API can be
limited to named certificates (--api-client); init.log no longer keeps the
administrator's password; a warning when auth is off on a public listen;
the recorded actor is sanitised and sudo-aware; Ray's dashboard is off, and
the remaining engine gaps are documented.
reconciler.go and agent.go are split by topic, the status mapping of each
failure is tested, and the plan's checklist is brought up to date.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
A model's max never did anything: desiredFor returned the minimum, or one
for an on-demand model someone was asking for, whatever the queue. Six small
CPU nodes run out of slots quickly, and a model with room to grow stayed at
its minimum while requests waited.
The router already scrapes each engine's running and waiting requests. The
control plane now reads them per model on every tick, alongside when each
replica was last used, and the reconciler keeps how many replicas load has
added above a model's base. One or more requests waiting per ready replica,
held for a minute, adds one; ten minutes with nothing waiting removes one of
those again. It never goes above max or below the base, moves one step at a
time, and does not add while the last addition is still placing or starting
— on this fleet a replica is minutes of weights and gigabytes of memory, and
a spike should not leave a pile of replicas behind it. Decisions are logged
with the load behind them.
Nothing live changes until a model's max is raised above its min.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Adding a model took four steps and a YAML file — plan it, fetch it into the
mirror, write its catalog entry with a memory figure somebody estimated,
scale it — and whether it would load was found out at the end.
`llmgw ctl model serve OWNER/REPO` does it as one job in the control plane,
where the registry, the mirror, the catalog and the fleet already are:
- the registry: the GGUF file set matching --quant (Q4_K_M by default) or
--file, leaving out vision projectors and importance matrices, and naming
what the repository does have when nothing matches; gated repositories are
refused;
- the mirror: fetched at the repository's revision, with progress, and each
file's sha256 compared with what the registry published — the mirror is
the one place a corrupted download is caught once rather than loaded on
every node;
- the check: whether the nodes' llama.cpp loads the architecture, and the
memory it needs from its own header;
- the catalog, then a wait for a replica that stops early, with the reason,
when the model is parked or fits on no node;
- a smoke test: one short request to the replica, with its engine key, and
the answer and tokens per second.
ctl starts the job and prints each step as it changes; a download of hours
does not depend on the terminal. --on-demand adds the model without starting
a replica. Jobs are kept in memory until the control plane restarts.
The catalog name a repository suggests moved into the registry package, so
the mirror page and this agree on it.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Every upgrade so far has been a script of mine copying a binary to each
machine over ssh, restarting it and polling until it came back — which is
the job, but not something the product could do, and which needed ssh into
every node.
`sudo llmgw ctl upgrade VERSION` on the control plane does it. This machine
first: the release for its platform, checked against the release's
checksums, the old binary kept beside it, llmgw-server restarted, and a wait
until every node that was ready has reconnected. Then each node in turn: the
control plane tells its agent the version over the stream it already holds;
the agent fetches and checks the release itself, swaps it in with a rename,
answers, and exits with status 75 so systemd starts the new binary. Engines
keep running, as for any agent restart, and are adopted again.
A node is done when it is back on the new version, ready, with as many ready
replicas as before; one that is not within the timeout stops the run before
the next node, so a bad release reaches one machine. Nodes already on the
version are skipped, so running it again resumes.
The fetch-and-verify is one package now, shared with onboarding's idea of
what a release version looks like.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
SDKs and editors pace themselves from OpenAI's x-ratelimit-* headers, and
the gateway sent none: only Retry-After, and only on the refusal they would
have avoided. A limit can be set at several levels of the tenancy tree, each
counted in its own pool, so the headers report the one with least left —
the one that will refuse first — after this request's own charge, on
refusals and successes alike. The windows slide, so the reset figure is the
next minute boundary, when a whole window has moved on. A limit that is not
set is not advertised.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
The serve form asked for weights plus half again plus two gigabytes. That
ignores the one thing that varies most: the KV cache. At the same 16k pool,
the models on the live mirror need from 0.44 GB of cache (Qwen2.5-1.5B, two
KV heads) to 5.25 GB (Gemma-2-9B, 256-wide heads) — so the flat guess
overcounted the small models, which on 7 GB nodes means refusing placements
that fit, and undercounted the ones with wide or many KV heads, which means
an engine killed for memory.
The GGUF header already carries the shape. The reader now also takes each
architecture's block_count, head counts, embedding length and key/value
lengths, reading past general.* until the tokenizer — and a header whose
tokenizer comes first and runs past the fetched bytes still returns what it
has rather than failing. The estimate is weights, plus the f16 KV cache for
the context pool (llama.cpp's --ctx-size, which --parallel divides rather
than multiplies), plus a gigabyte and five percent for the engine. It reuses
the header the servability check already fetched, and the form says what it
is made of. Checked against all twelve GGUF models on the live mirror, whose
shapes read back as their published architectures.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
"Why was this request slow?" had no answer. Nothing tied a request to the
replica that served it, the time admission held it went out in a response
header and was never kept, and the only per-request log lines were for
disconnects, early stream ends and upstream retries.
Every request now has an id: the client's X-Request-Id when it is a plain
string of reasonable length, otherwise one the gateway makes. It is set on
the response before anything else, so a request refused as malformed can be
named too, and forwarded to the engine. One access log line per request
carries it with the model asked for and served, the replica, status, time in
the queue, time to the first token, total time, tokens, and the key,
project and user.
Usage records gain the id, the replica, queue time and time to first token,
tried against a restored copy of the live store before being shipped: 591
rows kept, columns and index in place. `llmgw ctl request ID` reads one back
through the admin API.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
A review of v0.10.4-rc.4, and a look at the live network, found:
- Alertmanager listening on every interface: from any node its API took
silences, with no login. Bound to loopback on the monitoring host, and the
monitoring README now installs it that way; Prometheus beside it is its only
client, and one Alertmanager needs no cluster port.
- Login and signup unbounded in memory. Each attempt runs argon2 with 64 MiB,
and nothing limited how many ran at once; the per-address throttle kept one
entry per address ever tried. Hashing now takes one of a few slots and
waits for one otherwise. The throttle expires entries whose window has
passed when it fills, and if it is still full it refuses new addresses:
evicting live ones instead would let a flood of made-up addresses reset the
throttle on the address actually being guessed.
- Metric labels taken from the request. A refused request counted the model
name it asked for, so any key holder could mint a series per request.
Requests are counted under the catalog's name, or "unknown".
- Two in code written this week. A SQLite backup made its snapshot with the
default mode in the listable backup directory, a full copy of the store
readable while the backup ran; it is now made in a private directory, and
the unit sets UMask=0077. And archive links were checked by name only, so
"a -> ." then "a/a/b -> ../.." passed and a file written through them landed
above the install directory, as root. Archives now unpack through os.Root,
and a link may only point at a file beside it — which every llama.cpp
b10991 archive, CPU and CUDA, was checked to follow.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
The first backup on the live control plane was written, and the control
plane reported none: /var/backups/llmgw already existed, made by an earlier
move to PostgreSQL for its own dumps, owned by postgres and 0700. MkdirAll
leaves an existing directory as it is, so the archive landed where the
llmgw user could not list it, and llmgw_backup_last_success_timestamp_seconds
said 0.
Opening that directory up would have exposed the dumps already in it, so
backups get their own, /var/backups/llmgw-server. And `llmgw server backup`
now warns when the directory it wrote to is one the control plane cannot
list, rather than leaving that to be found from an alert.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
There were no backups: docs/install.md gave a pg_dump command, and nothing
ran it. The store holds every key, person, quota and usage record, the models
added at runtime, and now the secret each engine's key is derived from; the
certificate authority's key sits in /etc/llmgw/pki beside it. Losing the disk
lost all of it.
`llmgw server backup` writes both to one archive: pg_dump's custom format, or
a VACUUM INTO snapshot for SQLite, plus /etc/llmgw. The archive holds the CA's
key, so it is 0600; the directory is listable, so the control plane — not
root — can see when the newest was written. pg_dump is given the connection
through its environment, since a DSN carries the password and a process's
arguments are readable by every user. Written beside its name and renamed,
so an interrupted backup is never the newest; the newest 14 are kept, and
nothing the command did not write is ever removed.
llmgw-backup.timer runs it nightly and catches up after downtime. The control
plane publishes the newest archive's time, and BackupTooOld fires past 26
hours — or when there has never been one. The install guide now covers
restoring, and says to copy archives off the machine, since they share its
disk.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
CI's test job has failed intermittently — two of three runs on some days —
while every run here passed, including six repetitions on one CPU under the
race detector with eight packages at once. The difference is a shared,
loaded Linux runner, and the tests most exposed to it are the ones that
sleep a fixed time and then assert:
- admission: idle admission bounded at 50ms of wall clock against a 1ms
tick, and a queued request checked for after a 50ms sleep;
- scrape: a 10ms scrape timeout, which on a slow runner reports the engine
unreachable and then the violation a second time, in a test that counts
one;
- supervisor: log lines, three lines of output and a removed state file
each checked after a fixed sleep, and an exited worker bounded at 1.5s;
- agent: a heartbeat checked for after four intervals.
Each now waits for its condition up to a deadline of seconds, and the two
wall-clock bounds are set against what they exist to distinguish — the
admission queue's tick raised to ten seconds, the exited worker bounded
below the five-second grace it must not wait out — rather than against how
fast this laptop is.
Without the CI logs this cannot be proven to be the failure; these are the
tests that fail when the machine is slow, and they no longer do.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
On the live cluster kev-0.5b — an architecture the nodes' llama.cpp did not
know — was started 155 times in eight hours, failing the same way each time,
and phi-4, which fitted on no node, logged "no placement" 250 times in two
days. Neither showed up anywhere an operator looked: the backoff never gave
up, no metric said a model was failing or unplaceable, and the one alert for
a model with nothing serving could not fire, because its series was published
only while a replica was ready.
After five failures in a row a model is parked: not placed again until its
definition changes — a new source or profile — or `llmgw ctl retry` is run.
Status, the model list and the admin API show it with its last error. The
placement warning is logged when its reason changes or every ten minutes.
A request for a parked or unplaceable model is answered at once with why,
rather than "loading; retry shortly", which a client retries forever. Each
request still clears the previous placement result and triggers a fresh
attempt, so a model that fits once room is made is not refused on a stale
answer; the router waits for that attempt, not for its full activation
window.
Metrics now cover model health (desired, ready at 0 for what should run,
consecutive start failures, parked, unplaceable), engine installs per node,
leadership, and certificate expiry read from disk at each scrape, with alerts
for each. `ctl status` counts a model against what it should have now, so an
on-demand model that was asked for and fitted nowhere no longer reads as
satisfied.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
ctl accepted only 200, so the first real `ctl restart --all` printed
"Error: 202 Accepted" over a request that had queued nine restarts, all of
which then happened. Any 2xx is now a success, and its body is read.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Every fix so far became its own patch release, and the natural alternative —
v0.10.3-a — sorts before v0.10.3 by SemVer's rules: a hyphen marks a
pre-release, so every tool that orders versions would take the fix for the
older one. A release candidate of the next version, v0.10.4-rc.1, sorts
after v0.10.3 and before v0.10.4, which is what it is.
CI already builds any v* tag. Its release notes now come from a
"## Unreleased" section in CHANGELOG.md, where changes gather until the
version they belong to is released, and the release is marked as a
pre-release. Onboarding, in Go and in the shell script, counts a candidate
as a release and downloads it rather than copying the operator's binary.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
There was no way to restart a running replica. A running engine picks up an
engine key, an edited profile or a new engine version only when it starts,
so after v0.10.3 the nine replicas already running stayed without a key —
reachable from any node — with nothing to do about it short of draining
nodes, which on a small CPU fleet has nowhere to move a model to.
`llmgw ctl restart REPLICA... | --model M | --all` queues replicas to be
replaced. A replica being replaced keeps serving but stops counting toward
its model, so the reconciler places a replacement beside it; once that is
ready the old one is drained and stopped as a node drain would. Replicas of
one model go one at a time, so a model never needs the memory of every
replica twice. Where no second copy fits anywhere, the old replica is
stopped after the drain grace period and the new one starts in its place,
and the log says so, since that is the one case with an outage.
`ctl replicas` shows "(restart queued)" and "(restart replacing)" while it
happens.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Engines listen on every address their node has, with no key. Checked on the
live cluster: from a neighbouring node, a request straight to an engine's
port was answered — past the gateway's authentication, quotas and
accounting, by anyone who could reach the node.
Each replica's engine is now started with a key and refuses requests without
it. The key is derived from the replica id with an HMAC over a secret kept
in the store, rather than stored per replica: the router has to send the
right key to replicas this process never started — adopted after a restart,
or placed by the other control plane — and a function of a shared secret
gives that without a table to keep in step. A key taken from one node opens
that replica only. The secret is made on first use and copied with the rest
of the store when moving to PostgreSQL; a new one would lock the router out
of every running engine at the moment of the move.
The key reaches llama.cpp and vLLM through their environment
(LLAMA_API_KEY, VLLM_API_KEY) rather than their command line, which every
user on the node can read; SGLang only takes it as an argument. The agent's
readiness check, the router's proxy and its metrics scrape send it, the
client's own Authorization still never reaches the engine, and `ctl bench`
fetches the key of the replica it is pointed at from the admin API.
Engines started before this keep running without a key until their replica
is next started. With no store there is nowhere to keep the secret, and
engines start without one, with a warning.
Also formats two files that went in unformatted.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
The admin listener has no login. Reaching it is meant to mean holding the
control plane, so it binds to loopback and an operator reaches it over an
ssh tunnel — and so does every page open in that operator's browser. The
API decoded JSON whatever the Content-Type said, so a page could POST a
text/plain model definition, no preflight needed. A model's profile env
reached an engine the agent runs as root, unfiltered: LD_PRELOAD in a
definition was code execution on every node. A page that rebound its own
name to 127.0.0.1 could also read pprof's heap, which holds API keys.
The admin listener now answers only when Host is an address or localhost,
refuses requests a browser marks as cross-site (Origin, Sec-Fetch-Site),
and takes changes only as application/json, which no page can send across
origins without a preflight nobody grants. ctl sends that on every change,
bodiless DELETEs included; curl and ctl are otherwise unaffected.
Profile env that changes what runs rather than how — the dynamic loader's
LD_*, PATH, Python's PYTHON* start-up variables, BASH_ENV and their like —
is refused when a model is defined, and dropped again by the engine adapter
before the process starts, whatever sent the profile. None of the live
catalog's models sets any.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Checked on the live cluster: from any node, the mirror's management API on
:8082 answered — list, fetch, delete — with no credentials. Unset
--api-allow meant anyone. It now means this machine only; the control plane
is let in with --api-allow, which `server init` already wrote for the
mirrors it sets up, or by mutual TLS.
A fetch went to whatever URL it was given, and the file server on :8081
then handed the result to anyone: "fetch http://169.254.169.254/..." read a
cloud's instance metadata through the mirror, and a URL on the LAN read
whatever answered there. Downloads started through the API now go to http
and https only, and are refused at dial time — after resolution, on every
redirect — when the address is loopback, private, link-local, CGNAT or
multicast. --allow-private-sources lets them through for a mirror that
really does copy from a server on its own network. `llmgw mirror add`, run
by someone on the mirror itself, is unchanged.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Two places built a path from a name somebody else supplied and checked only
for slashes.
The mirror refused "a/b" as a model name but took "..", which is a single
path element too: a fetch for model ".." wrote beside the mirror root rather
than inside it. Model, version and file names now have to be one element
that does not start with a dot — the mirror's own checksum files are dotted
— on the fetch path and the API alike.
The agent took the engine version from the control plane as given and made
a directory of it under /opt/llmgw/engines, and a RemoveAll before replacing
one. A version of "../x" would have done both outside the install root, as
root. The agent now installs only versions that look like one — letters,
digits and ._+- — whatever the control plane sent.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Once server init's screen closed, the whole run was printed again under the
frame that had just shown it. Now the password and the next steps are, the
whole run goes to /var/lib/llmgw/init.log (0600: it holds the password), and
it is printed in full only when init fails. Seen in a draft of the install
video, where it scrolled the screen away.
The spinner and the text field are written here instead of taken from
bubbles, whose packages query the terminal's colours as they load. bubbletea
does the same deliberately, so the query stays; the dependency goes.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
mirror init sets a machine up as the model mirror — the user, /srv/models,
and a unit serving files on :8081 and the management API on :8082 — and
server init --mirror points the control plane at it instead of running one.
Before, that took a unit written by hand and an edit to server.yaml.
The management API can fetch and delete models and answered anyone who
could reach it. mirror serve --api-allow limits it to the addresses given
and the machine itself; mirror init passes the control plane's. The unit
text is shared with the one server init writes for a mirror beside it.
With --no-node the starter model is still fetched and catalogued, unpinned,
so it starts on the first node added, and the init form shows the mirror in
use instead of offering to run one.
Tried on three empty VMs: the mirror answered the control plane and refused
the node, and the starter model came up on the node when it was added.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
In a terminal and without --admin, server init shows a short form: the
administrator's email, the other names nodes will use (with the addresses
it found), SQLite or PostgreSQL, and the mirror, node and starter model.
Its own lines then fill in as a list — read from the writer init already
uses, so nothing in init changed — with downloads updating in place and the
password in a box until the end. The whole run, password included, is
printed again when the screen closes, so it is in the terminal's history.
The last screen says how to add a node and to back up the authority's key.
node add takes several addresses and adds them in turn, with a summary.
Suggested fabrics carry what the adapters report them to be, so a name
given for one node is used for the next on the same fabric without asking.
Tried on empty VMs: init from the form through to the starter model
serving, and two nodes added to that cluster in one command. The first
attempt at the form lost its keystrokes to the terminal colour query in a
pseudo-terminal that never answers it; a real terminal does.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
doctor checks a node alone, and every check can pass while two nodes still
cannot reach each other. ctl fabric-test A B asks B's agent for an
ib_write_bw server and A's for the client, adapter by adapter as NCCL pairs
them, one rail at a time, and grades each against its link's rate. It goes
through the agents' streams, so there is no SSH between nodes; the agent
installs perftest the first time, and names the RoCE v2 GID itself.
The result is read from perftest's table by its heading, not a column
number. Agents now list the requests they answer beyond the usual
(Register.features), and the control plane refuses a test on one too old to
answer instead of waiting minutes for it. The forwarding dispatcher carries
the new capability, and its test says so: a missing forward would have made
the command quietly unavailable in production.
Not yet run over real InfiniBand or RoCE; this cluster has neither.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
A control plane of this release asks every node for vLLM. An agent of the
last one does not know how to install it, and answered "unsupported", so a
cluster half way through its upgrade showed every node as failing. Agents
now say which engines they can install (Register.installable_engines), and
are asked for no others; an agent that says nothing is asked for llama.cpp
alone, as it always was.
doctor reports the CPU's vector extensions, and warns when AVX2 is missing,
with the fix for a VM: the test node for node add was one, on QEMU's default
CPU model, where llama.cpp runs several times slower and nothing else looks
wrong. node add shows it, since it runs doctor.
The changelog's unreleased section was two releases' worth of sections one
after the other, with two lists of fixes and the upgrade notes in the
middle. It is one entry now: largest changes first, the fixes together, and
every upgrade note at the end, with vLLM's default install and how to keep
your own.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Adding a node was deploy/bootstrap/onboard-node.sh, which is not installed
anywhere and wanted the node's name, the control plane's address and a
dozen flags. It is now in the binary, run on the control plane:
sudo llmgw node add ubuntu@10.0.0.21
The node id is the machine's hostname, and the address its agent dials is
this machine's on the route to it, checked against the server certificate.
It installs llmgw there (the release for its architecture, fetched and
checked by the node; uname rather than dpkg, so RHEL works), runs doctor
there and stops on a problem before changing anything, issues and installs
the certificate, writes agent.yaml and the unit, starts the agent, and waits
for it to join and install llama.cpp. The authority is read first, so a
missing one is said before the node is touched.
The steps are events. In a terminal they draw a checklist (bubbletea) that
asks what a script cannot: which fabric each group of active adapters is on,
grouped by the subnet manager or RoCE network they report, and whether to go
on past a problem. Elsewhere, one line per step.
Found by running it on an empty VM: ssh's "Permanently added" warning on
stderr was read as the machine's hostname, so standard error is now kept
apart; and a node added again while cordoned never counted as joined, so
joining now means a heartbeat since the restart.
llmgw node remove forgets a lost node, which otherwise stays listed until
the control plane restarts. ctl nodes no longer lists vLLM as skipped on
every CPU node. The quick install, install and onboarding docs use it.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
install.md explains every choice and is long for someone who wants the
commands. quick-install.md has only those, and what to check after each:
the binary, server init, onboarding GPU nodes (with doctor first and the
script fetched from the release tag, since it is not installed anywhere),
a model from the mirror's explorer, keys and editors, and Caddy. Every
button and path it names was checked against the pages. quickstart.md is
now said to be the from-source, one-workstation path it is; README and the
about page point at the new guide.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
vLLM was installed by hand and named in each agent's configuration. The
agent now installs it: a Python 3.12 environment built by uv, which is
itself a GitHub release checked against its checksum, from PyPI resolved as
it stood a day after that vLLM was published and installed with
--require-hashes. The resolved list is kept in the environment. The
environment is built relocatable under a scratch name and renamed into place
once it runs, like an archive.
The default is 0.30.0, whose flags were checked against the ones llmgw
builds. It is built for CUDA 13, so it needs driver 580 and a Turing GPU or
newer, and 25 GB free while it installs; a node lacking one says which, and a
node with no GPU skips it without being shown as a fault. gcc comes with it
because Triton compiles its launcher at the first model load. SGLang
installs the same way when the control plane names a version. llmgw doctor
reports whether vLLM can be installed on the node.
Checked by installing 0.30.0 this way on a test node: 7.7 GB, torch 2.13 for
CUDA 13.0, importing cleanly; the node has no GPU, so vLLM was not started.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
The website was a file built by hand outside the repository. It is now a
template in internal/web: every gateway serves it at /about, without a key,
linked from the landing page's footer, and the published site is rendered
from the same template.
The fonts are vendored (Latin subsets, OFL) so the page sends nobody's
browser to Google. The proxy configurations it shows are copies of
deploy/proxy, kept equal by a test. A development build says so instead of
linking to release files that do not exist.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
The changelog's unreleased section had stopped at refusing unloadable
weights; it now covers the rest: telling independent fabrics apart,
their subnet managers and maps, NVLink on every build and across nodes,
the multi-node launch fixes and vLLM's new default, doctor, node load,
editors and the Responses API, the chat and mirror pages, a person's own
use, the admin pages, the new metrics, and how to upgrade.
docs/fabrics.md is new, for a site with InfiniBand or NVLink: what
llmgw does with them, what each node and fabric needs first, declaring
fabrics, checking a node with doctor, what the pages and metrics show
and which to alert on, what an engine is given, and where to look when
a replica spanning nodes will not run. It says plainly that none of it
has yet run on such hardware.
install.md, node-onboarding.md, onboarding.md, the README and the
example agent configuration no longer say the portable binary cannot
see NVLink or that a fabric's name cannot be checked, and describe the
account page and connecting an editor.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
The account page makes a key for Continue, Codex or Cline and shows
what the tool needs with the key, this gateway's address and a served
model in it: Continue's assistant file, written to its own place under
~/.continue/assistants so the person's config.yaml is not touched;
Codex's provider and profile, added to ~/.codex/config.toml without
changing its default model; and for Cline, whose settings live in VS
Code's secret storage, the four fields to paste. Continue and Codex get
a one-line command whose script, served without a session, holds no
secret - the key comes from the environment, never a URL - keeps a copy
of whatever it replaces, and leaves the rest of the file as it was.
POST /v1/responses translates the Responses API, which Codex speaks, to
chat completions and back: instructions, messages, function tools and
Codex's free-form custom tools, their calls and outputs, and usage, as a
response object or as its stream of typed events. It goes down the same
path as any request - quotas, admission, routing, usage. Server-side
tools and stored responses have no equivalent and are ignored.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
While a reply streams the Send button is Stop, which aborts the request
- and with it the one to the engine - keeping what had arrived. Under
each reply: its tokens, from the engine's own count (the page's turn now
asks for include_usage), tokens a second, time to the first token and in
all. A settings fold takes a system prompt, sent before every turn, and
a temperature, which the gateway holds to 0-2 whatever the page sends.
The conversation, the prompt and the temperature are kept in the
browser's storage, so a reload puts them back - the model's turns
rendered again by the server as when they came - and "New conversation"
clears them. The gateway still keeps no conversation.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
On a phone every admin page was wider than the screen - its tables set
the width - so the browser zoomed the whole page out until nothing on it
could be read. Under 760px a table now scrolls sideways in its own box,
charts stack, form rows fold, and the menus wrap; every page measured at
390px wide now fits.
The cluster page drew a Fabrics heading and its note on a cluster with
no fabric at all.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Fetch on a repository opened in the explorer posted a form, and the
page that came back had closed the repository and lost the list's place.
The page's script now sends it asking for JSON: the outcome appears
under the button, and only the mirror's own table is fetched again,
every five seconds while anything in it is downloading. Without script
the form posts as before.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
An account's "add to" picker and its button sit on one line; suspend
and remove, the two things done least and the two drawn in red on every
row, are in a menu behind "⋯"; and the box for a new project under
every team, and for a new team under every organization, is folded
behind "+ project" and "+ team" until wanted.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
The usage and organization pages drew their choices as filled green
chips, the newer pages as outlined pills. They are all the outlined
pill now.
The NVLink page's GPU squares were styled as .chip, the class those
choices already used, which shrank the usage page's filters into
1.7rem squares wherever the stylesheet loaded. They are .gpu-chip.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
An empty launch_mode meant ray: a Ray head and joins on every node, a
dependency to install, and a path never checked against a real cluster.
It now means mp - every node runs vllm serve with its rank and the
leader's address, the workers headless - which is how vLLM documents a
multi-node launch today and needs nothing but vLLM. ray is still there
for a vLLM too old for mp's flags. The example agent configuration,
doctor and the reference say so.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
A GB200 NVL72 rack or an NVLink Switch system is a scale-up island: its
GPUs reach each other over NVLink whatever node they are in. Each GPU
now reports its fabric from nvidia-smi -q - state, status, ClusterUUID,
CliqueId, bandwidth - at registration and once a minute after, since a
fabric manager restarting drops every card out at once; and each node
reports nvidia-imex and its channels, without which the domain's GPUs
cannot share memory across nodes. A single machine's NVSwitch, which
reports a cluster of zeros, is no domain.
A replica spanning nodes is placed inside one domain first, on nodes
whose every card is joined and whose IMEX is up, and its shards are
told NCCL_MNNVL_ENABLE=1; InfiniBand is the fallback.
/admin/nvlink draws each domain as a rack - the NVLink Switch band on
top, light running down a backplane, trays of GPU chips that glow when
joined, pulse red when not, turn amber on degraded bandwidth - and
lists what keeps a tray out. A node's page shows its GPU-by-GPU NVLink
matrix, each card's NUMA node and nearest adapter, and its domain and
IMEX. doctor checks joining, bandwidth, IMEX and its channel; metrics
llmgw_gpu_nvlink_joined and llmgw_imex_up; /api/v1/nvlink.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
The control plane asks one node on each physical fabric to run
ibnetdiscover every five minutes and parses the text itself, so a
format the parser has not met is a control plane upgrade, not one on
every node. From the map it works out the switch tiers (leaf, spine,
core, by distance from the adapters), which adapter is which node's,
which cables trained below the rate the rest of their kind run at, and
whether the rails line up: every node's Nth adapter on its own leaf.
A page per fabric (/admin/fabrics) draws it: switches in their tiers,
adapters fanned out under their leaves, cables coloured by rate and
bundled, degraded ones marching red with a marker, and the cluster's
own adapters live - down ports glowing red, and particles running each
cable as fast as its adapter is sending and receiving, from the
counters. It zooms, pans, fades what a hovered switch or adapter does
not touch, opens a panel of detail on a click, colours by rail, finds a
node, and refreshes every fifteen seconds. The data is also at
/api/v1/fabrics/{id}/topology.
Placement reads the map: a replica spanning nodes takes nodes of one
leaf together when it can, and nodes whose cable trained short last.
Static assets are named by their content, as the stylesheet already
was.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
A fabric's identity was its master subnet manager, which changes on a
failover: for the minute its ports took to agree, one fabric read as
two, and a name covering it as two separate fabrics. Each agent now
also lists every subnet manager on a fabric (saquery SMIR, through one
port per master, once a minute); managers listed together are one
fabric, named by the lowest GUID among them, so the identity survives
the master changing.
The same list says what a fabric can survive. The cluster page's new
subnet manager table, /api/v1/fabrics, doctor and metrics
(llmgw_fabric_master_sm, llmgw_fabric_subnet_managers,
llmgw_fabric_problems) show each fabric's master, priority and
standbys, and say when a fabric has no standby, its ports disagree on
the master, ports are up with no subnet manager (INIT), or the master
changed in the last hour. Every change of master a port reports is
kept, and a fabric's last day of them is listed.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
A fabric was what agent.yaml called it. With several independent
InfiniBand fabrics at a site, two given one name would have had a
replica spread across both, starting and then hanging on its first
collective. Each active InfiniBand port now reports the master subnet
manager it sees (sminfo, asked once a minute), which every port on one
fabric shares and ports on separate fabrics cannot; a RoCE port reports
the IP network of its RoCE v2 address. Ports also carry their node and
port GUIDs.
Placement divides a declared fabric by that physical identity and forms
a replica on one part only; a node whose adapters for one name are on
two fabrics is refused, and a node that cannot say is kept apart from
those that can. /api/v1/fabrics and the cluster page list each physical
fabric with its subnet manager, and say when one name covers two
fabrics, two names one fabric, an adapter is up but undeclared, or a
node cannot be checked. doctor reports each port's subnet manager, and
an agent on a node with adapters installs infiniband-diags when sminfo
is missing.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
