Introduce a peer-sync cache keyed by WireGuard pubkey that records the NetworkMap.Serial and meta hash the server last delivered to each peer. When a Sync request arrives from a non-Android peer whose cached serial matches the current account serial and whose meta hash matches the last delivery, short-circuit SyncAndMarkPeer and reply with a NetbirdConfig-only SyncResponse mirroring the shape TimeBasedAuthSecretsManager already pushes for TURN/Relay token rotation. The client keeps its existing network map state and refreshes only control-plane credentials. The fast path avoids GetAccountWithBackpressure, the full per-peer map assembly, posture-check recomputation and the large encrypted payload on every reconnect of a peer whose account is quiescent. Slow path remains the source of truth for any real state change; every full-map send (initial sync or streamed NetworkMap update) rewrites the cache, and every Login deletes it so a fresh map is guaranteed after SSH key rotation, approval changes or re-registration. Backend-only: no proto changes and no client changes. Compatibility is provided by the existing client handling of nil NetworkMap in handleSync (every version from v0.20.0 on). Android is gated out at the server because its readInitialSettings path calls GrpcClient.GetNetworkMap which errors on nil map. The cache is wired through BaseServer.CacheStore() so it shares the same Redis/in-memory backend as OneTimeTokenStore and PKCEVerifierStore. Test coverage lands in four layers: - Pure decision function (peer_serial_cache_decision_test.go) - Cache wrapper with TTL + concurrency (peer_serial_cache_test.go) - Response shape unit tests (sync_fast_path_response_test.go) - In-process gRPC behavioural tests covering first sync, reconnect skip, android never-skip, meta change, login invalidation, and serial advance (management/server/sync_fast_path_test.go) - Frozen SyncRequest wire-format fixtures for v0.20.0 / v0.40.0 / v0.60.0 / current / android replayed against the in-process server (management/server/sync_legacy_wire_test.go + testdata fixtures)
netbird Management Server
netbird management server will control and synchronize peers configuration within your Netbird account and network.
Command Options
The CLI accepts the command management with the following options:
start Netbird Management Server
Usage:
netbird-mgmt management [flags]
Flags:
--cert-file string Location of your SSL certificate. Can be used when you have an existing certificate and don't want a new certificate be generated automatically. If letsencrypt-domain is specified this property has no effect
--cert-key string Location of your SSL certificate private key. Can be used when you have an existing certificate and don't want a new certificate be generated automatically. If letsencrypt-domain is specified this property has no effect
--datadir string server data directory location
-h, --help help for management
--letsencrypt-domain string a domain to issue Let's Encrypt certificate for. Enables TLS using Let's Encrypt. Will fetch and renew certificate, and run the server with TLS
--port int server port to listen on (default 33073)
Global Flags:
--config string Netbird config file location to write new config to (default "/etc/netbird")
--log-file string sets Netbird log path. If console is specified the the log will be output to stdout (default "/var/log/netbird/management.log")
--log-level string (default "info")
Run Management service (Docker)
You can run service in 2 modes - with TLS or without (not recommended).
Run with TLS (Let's Encrypt).
By specifying the --letsencrypt-domain the daemon will handle SSL certificate request and configuration.
In the following example 33073 is the management service default port, and 443 will be used as port for Let's Encrypt challenge and HTTP API.
The server where you are running a container has to have a public IP (for Let's Encrypt certificate challenge).
Replace with your server's public domain (e.g. mydomain.com or subdomain sub.mydomain.com).
# create a volume
docker volume create netbird-mgmt
# run the docker container
docker run -d --name netbird-management \
-p 33073:33073 \
-p 443:443 \
-v netbird-mgmt:/var/lib/netbird \
-v ./config.json:/etc/netbird/config.json \
netbirdio/management:latest \
--letsencrypt-domain <YOUR-DOMAIN>
An example of config.json can be found here management.json
Trigger Let's encrypt certificate generation:
curl https://<YOUR-DOMAIN>
The certificate will be persisted in the datadir/letsencrypt/ folder (e.g. /var/lib/netbird/letsencrypt/) inside the container.
Make sure that the datadir is mapped to some folder on a host machine. In case you used the volume command, you can run the following to retrieve the Mountpoint:
docker volume inspect netbird-mgmt
[
{
"CreatedAt": "2021-07-25T20:45:28Z",
"Driver": "local",
"Labels": {},
"Mountpoint": "/var/lib/docker/volumes/mgmt/_data",
"Name": "netbird-mgmt",
"Options": {},
"Scope": "local"
}
]
Consequent restarts of the container will pick up previously generated certificate so there is no need to trigger certificate generation with the curl command on every restart.
Run without TLS.
# create a volume
docker volume create netbird-mgmt
# run the docker container
docker run -d --name netbird-management \
-p 33073:33073 \
-v netbird-mgmt:/var/lib/netbird \
-v ./config.json:/etc/netbird/config.json \
netbirdio/management:latest
Debug tag
We also publish a docker image with the debug tag which has the log-level set to default, plus it uses the gcr.io/distroless/base:debug image that can be used with docker exec in order to run some commands in the Management container.
shell $ docker run -d --name netbird-management-debug \
-p 33073:33073 \
-v netbird-mgmt:/var/lib/netbird \
-v ./config.json:/etc/netbird/config.json \
netbirdio/management:debug-latest
shell $ docker exec -ti netbird-management-debug /bin/sh
container-shell $
For development purposes:
Install golang gRpc tools:
#!/bin/bash
go install google.golang.org/protobuf/cmd/protoc-gen-go@v1.26
go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@v1.1
Generate gRpc code:
#!/bin/bash
protoc -I proto/ proto/management.proto --go_out=. --go-grpc_out=.