sendsetsctl
The CLI for a SendSets instance. The operator commands for accounts, health and recovery, and the API commands that let scripts and AI agents drive campaigns, contacts, mailboxes and the inbox with an API key.
There are two CLIs. This is the operator's one.
sendsetsctl is for running an instance: accounts, health, recovery, backups. It reads the database directly and is meant to be run inside the backend container.
If you want to use the product from your terminal (campaigns, contacts, mailboxes, the inbox), you want sendsets: a signed-in, multi-host client you install on your own machine, with sendsets auth login instead of an exported key.
sendsetsctl is the CLI for a SendSets instance, and it has two halves with two trust models.
The operator commands answer two questions: what state is this install in, and how do I get back in. They read and write the database directly, so they keep working when the sign-in page does not. Their authorization is container or host access, the same trust model as Sentry's createuser, Gitea's admin user create and authentik's ak changepassword, and it is the right one when the identity system is the thing that is broken.
The API commands drive a running instance over its public REST API with an API key, so they work from any machine against any instance you hold a key for, the hosted service included. They exist so scripts and AI agents can operate the product itself: campaigns, contacts, mailboxes, the inbox, settings. Everything they can do is bounded by the key's scopes.
The CLI never serves HTTP. The API commands are a client of the already-gated public API, which adds no new surface to your instance.
Those API commands predate the sendsets CLI and still work exactly as documented below. For day-to-day product work prefer sendsets: it signs in for you, holds a credential per host, prints tables rather than raw JSON, and runs on your laptop rather than inside a container.
Running it
The binary ships inside the backend image at /usr/local/bin/sendsetsctl, so it is on the path in every runtime. Running it inside the backend is the documented path because the environment there is already correct.
docker compose -p sendsets exec backend sendsetsctl status # docker compose
docker exec -it sendsets-backend sendsetsctl status # plain docker
kubectl exec -it deploy/sendsets-backend -- sendsetsctl status
sendsetsctl status # bare binaryEvery example on this page shows the compose form. Substitute the prefix you need.
For a compose install, make cli is the same thing with less typing. Flags go through ARGS, because make reads a bare --email as one of its own options:
make cli status
make cli setup-link
make cli ARGS="user create --email you@example.com --admin"Terminals and pipes
This is the one piece of shell mechanics the CLI cannot hide from you.
docker compose exec allocates a TTY unless you pass -T. Commands that prompt need that TTY. Commands you pipe into need it gone.
| You want to | Run |
|---|---|
| Be prompted for a password | docker compose -p sendsets exec backend sendsetsctl ... |
| Pipe a password in | printf '%s' 'your-password' | docker compose -p sendsets exec -T backend sendsetsctl ... --password-stdin |
A command that would set a password refuses on a non-TTY unless you passed --password-stdin, rather than creating an account nobody can sign in to.
What it reads from the environment
| Variable | Needed by | If it is missing |
|---|---|---|
PRIMARY_DB | every command except hash-password | The command stops and tells you to run it inside the backend container |
REDIS | setup-link always, reset-password to mint a link | setup-link fails. Everything else degrades to a warning and continues |
AUTH_SECRET | reset-password when it mints a link | The link cannot be signed with the key the backend verifies, so it is refused |
APP_URL | every printed link and sign-in hint | Links are built against https://app.sendsets.com, which is the hosted service and not your instance |
KMS_PROVIDER and its key | org export, org import | The command stops: a workspace's sealed values cannot be opened, so an archive would be useless |
CREDENTIALS_ENCRYPTION_KEY | org export, org import | A warning, and mailbox credentials are neither read nor written. Everything else still moves |
CREDENTIALS_ENCRYPTION_KEY, KMS_LOCAL_MASTER_KEY | backup, restore | backup warns and leaves them out of the bundle. restore refuses when this host's differ from the bundle's |
BLOB_FS_ROOT | backup, restore | Defaults to /data/blobs, which is where the compose stack mounts it |
SENDSETS_API_KEY | every API command | The command stops and explains where a key comes from |
SENDSETS_API_URL | every API command | Falls back to the instance's own API_PUBLIC_URL, then the hosted service |
backup and restore also need pg_dump and psql, which the backend image ships for exactly this reason. Inside the backend container all of these are already set, except the API key, which is yours. Outside it, export what the command needs, and match AUTH_SECRET to the backend's exactly.
The operator commands
| Command | Does |
|---|---|
status | Prints the instance state, the platform admins, the health checks, and what to run next |
setup-link | Prints a fresh single-use link that claims an instance with no accounts |
user create | Creates an account, an organization and a trial, optionally a platform admin |
user list | Lists accounts, and answers whether any platform admin survives |
user reset-password | Prints a one-time reset link, or sets the password from stdin |
user grant-admin | Gives an account a platform admin role |
user revoke-admin | Takes platform admin away from an account |
user disable-2fa | Clears an account's authenticator enrolment |
hash-password | Prints an argon2 hash for unattended provisioning |
fleet join-token | Issues the token a machine needs to join the fleet |
fleet list | Every worker and consumer: role, version, liveness and usage |
fleet version | Shows or sets the version every node should run |
fleet channel | Follows stable or dev releases, or holds the fleet |
fleet pin | Holds one node at a version, to canary or hold it back |
fleet remove | Forgets a node; its mailboxes re-place themselves |
backup | Writes the whole instance to one restorable bundle |
restore | Restores a bundle onto this instance, replacing everything on it |
org list | Lists the workspaces on this instance with their id, owner, and size |
org export | Writes a whole workspace to a portable archive file |
org import | Applies an archive to a workspace on this instance |
sendsetsctl --help lists them, and sendsetsctl <command> --help prints one command's flags with an example. The API commands are further down, because they authenticate differently.
status
docker compose -p sendsets exec backend sendsetsctl status| Flag | Default | Does |
|---|---|---|
--json | off | Prints the state as JSON instead of prose, and always exits 0 |
--quiet | off | Prints only the checks, without the instance summary. Ignored with --json |
It prints four blocks in this order: the instance state, the platform admins, how to get in, and the checks. A sample run is on first run.
The How to get in block changes with the state. An unclaimed instance is told to print a setup link; a claimed one is given the recovery commands; an instance with no platform admin is told to promote an account.
The Checks block holds the same findings the admin panel's Setup and health page shows. Every one of them is documented on instance health.
make doctor is sendsetsctl status for a compose install.
Exit status and JSON
status exits non-zero when any check is at error severity, which is what makes make doctor usable as the last line of a deploy script.
--json is the exception: it always exits 0, because make claim uses it to decide whether the backend is answering at all. Read .summary.error for the verdict instead.
| Key | Holds |
|---|---|
accounts, claimed, setup_required | Account count, and whether a setup link can still be issued |
admin_count, admins | How many platform admins exist, and who they are |
registration, registration_source | The resolved registration mode, and whether it was set or defaulted |
mail_transport, mail_delivers, mail_transport_source | The transport, whether it puts mail on the wire, and where the setting came from |
app_url, app_url_source | The base URL every printed link is built from |
next_steps | The same commands the prose How to get in block prints |
checks, summary | The findings, and the error, warning and note counts |
Those keys are a contract. They are only ever appended to, never renamed or dropped.
setup-link
docker compose -p sendsets exec backend sendsetsctl setup-linkPrints a single-use link that claims an unclaimed instance. It expires in 24 hours, replaces any outstanding link, and only its hash is stored, so this is the only time it is printed.
It refuses on an instance that already has accounts, by design: a second owner must never be mintable without an existing account. If you get that refusal, you want user create instead.
This is the one command that cannot degrade, because the token lives in Redis. With Redis down, create the owner directly instead.
make claim wraps it for a compose install, and finds the link already in the logs before minting a new one.
user create
docker compose -p sendsets exec backend sendsetsctl user create --email you@example.com --admin| Flag | Default | Does |
|---|---|---|
--email | required | The address of the account to create |
--admin | off | Grants every platform admin permission, the same as --role super |
--org | <name>'s Organization | Names the new organization |
--no-org | off | Creates the account with no organization and no trial |
--password-stdin | off | Reads the password from stdin instead of prompting |
It creates the account, an organization and a free trial, and with --admin grants every platform admin bit. Use --no-org when the person will accept an invitation into a workspace that already exists.
An address that already exists is an error, and the message points you at reset-password.
The password is the one you type
There is no generated or default password. On a terminal the command prompts for it twice, with echo off:
Password for you@example.com:
Repeat password for you@example.com:
Created account you@example.com (id ...), organization "Your Organization" (id ...),
a free trial, every platform admin permission (mask 4194303).
Next
Sign in at http://localhost:5173 with the password you just set.It must be between 8 and 128 characters, which is the same rule the dashboard enforces, so the scripted route is never weaker than the interactive one.
From a script, pipe it in so it never reaches your shell history or ps output:
printf '%s' "$PASSWORD" | docker compose -p sendsets exec -T backend \
sendsetsctl user create --email you@example.com --admin --password-stdinSigning in afterwards
Open the URL the command printed, which is APP_URL, and sign in with the address and that password. On the default compose stack that is http://localhost:5173.
Nothing else stands in the way on a stock self-hosted instance:
- No emailed login code.
AUTH_LOGIN_CODEdefaults to off when self-hosted, and a transport that does not deliver can never gate a login whatever the setting says. See login codes - No email confirmation.
REQUIRE_EMAIL_VERIFICATIONdefaults to off when self-hosted, so the account is usable immediately - No captcha unless you set
TURNSTILE_SECRET - No invitation, and no dependency on the registration mode.
invite_onlyandtrueboth govern the sign-up form, which this command does not use
The dashboard and the admin panel are separate apps. --admin opens the panel on ADMIN_URL, port 5174 in the default stack, not APP_URL.
user list
docker compose -p sendsets exec backend sendsetsctl user list --admin| Flag | Default | Does |
|---|---|---|
--admin | off | Lists only accounts holding platform admin permissions |
--limit | 50 | How many accounts to print, between 1 and 100 |
Prints address, name, admin role and creation date, oldest first. --admin answers the narrow question of whether any admin account survives, and when none does it prints the two commands that fix that.
user reset-password
docker compose -p sendsets exec backend sendsetsctl user reset-password --email you@example.com| Flag | Default | Does |
|---|---|---|
--email | required | The address of the account to reset |
--password-stdin | off | Reads the new password from stdin and sets it immediately |
--ttl | 1h | How long the printed link stays valid, up to 24 hours |
Without --password-stdin it prints a single-use reset URL and changes nothing yet. Open it in a browser and choose the new password there, which keeps it out of your shell history, your scrollback and the process list. It redeems through exactly the same path as the reset link the product emails, and opening it revokes every existing session for the account.
--ttl is capped at 24 hours because a reset link is a bearer credential for the account.
The automation path sets the password directly and revokes every existing session the same way:
printf '%s' "$PASSWORD" | docker compose -p sendsets exec -T backend \
sendsetsctl user reset-password --email you@example.com --password-stdinReach for that form when Redis is down, since a link cannot be minted without it.
user grant-admin
docker compose -p sendsets exec backend sendsetsctl user grant-admin --email you@example.com --role super| Flag | Default | Does |
|---|---|---|
--email | required | The address of the account to promote |
--role | required | One of super, support, ops, analyst |
| Role | Grants |
|---|---|
super | Every platform admin permission. This is the one that opens every admin screen |
support | Users, campaigns, organizations, the warmup pool, warmup bans, appeals, enterprise inquiries, audit logs |
ops | Workers and worker management, rate limits, analytics, organizations, audit logs |
analyst | Read only: users, campaigns, organizations, analytics, audit logs |
The role replaces the account's existing mask rather than adding to it, and re-granting the role it already holds is reported as no change. The permissions are read from the session, so the account has to sign out and back in before the panel reflects the grant.
The account must already exist. make grant-admin EMAIL=... ROLE=... wraps this for a compose install. The admin panel now offers the same under Accounts > Admins, by preset or per bit, so this command is no longer the only way to add a second admin.
user revoke-admin
docker compose -p sendsets exec backend sendsetsctl user revoke-admin --email old@example.com| Flag | Default | Does |
|---|---|---|
--email | required | The address of the account to demote |
--force | off | Allows removing the last remaining platform admin |
Removes every platform admin permission and leaves the account otherwise untouched.
Revoking the only remaining admin is refused without --force, because it closes the admin panel for everyone and nothing inside the product can reopen it. Grant someone else first. make revoke-admin EMAIL=... wraps it.
user disable-2fa
docker compose -p sendsets exec backend sendsetsctl user disable-2fa --email you@example.comClears the authenticator enrolment and the recovery codes, so a lost phone does not become a full password reset. The password still works, and the account can enroll a new authenticator from account security after signing in.
hash-password
sendsetsctl hash-password
printf '%s' 'your password' | sendsetsctl hash-passwordPrints an argon2 hash for SENDSETS_BOOTSTRAP_PASSWORD_HASH, which provisions the owner before the first start of an instance with no accounts. See unattended provisioning.
It prompts when a terminal is attached and reads the pipe when one is not, so the same command works by hand and in a provisioning script. The hash alone goes to stdout, so it can be captured or piped; the explanation goes to stderr. This is the only command that does not need a database.
Quote the hash
An argon2 PHC string contains $ characters. Docker Compose reads those as interpolation, so a bare hash in .env silently loses part of itself. Wrap it in single quotes there, and double every $ if you paste it into docker-compose.yml directly.
backup
docker compose -p sendsets exec backend sendsetsctl backup --out /data/blobs/sendsets.tar.gz
docker compose -p sendsets cp backend:/data/blobs/sendsets.tar.gz ./sendsets.tar.gz \
&& docker compose -p sendsets exec -T backend rm -f /data/blobs/sendsets.tar.gz/data/blobs is the one path the container and the host both see, so it is the hand-off. Move the bundle out and delete it: backup excludes its own output from the archive, but a bundle left behind is swept into the next one. The delete is chained with && so a failed copy cannot take the only copy with it.
Writes one bundle holding the three things that only restore together: a pg_dump of the database, the blob root (message bodies, attachments, avatars), and the encryption keys.
That combination is the whole reason this is a command rather than a documented list of steps. A dump alone restores an instance whose every mailbox credential decrypts to nothing, because the ciphertext is in the database and the key that opens it is in .env. The blob root alone restores bodies nothing points at.
| Flag | Does |
|---|---|
--out | Where to write it. Defaults to sendsets-backup-<timestamp>.tar.gz in the working directory |
--no-keys | Leaves the encryption keys out. The bundle is then not restorable on its own |
--no-blobs | Database only |
--force | Overwrite an existing output file |
The bundle is written 0600 and holds every mailbox credential on the instance plus the keys that open them. Treat the file as you would the instance itself: encrypted at rest, off the host, and not in a shared drive.
Blobs travel only on the filesystem provider. An instance storing them in S3 keeps them in the bucket, and the bundle says so rather than pretending to be complete.
Schedule it
install.sh --wizard writes a backup.sh and a systemd timer that runs exactly this, keeps the last N bundles and can copy each one off the host.
restore
docker compose -p sendsets exec backend sendsetsctl restore --file /data/blobs/sendsets.tar.gz
docker compose -p sendsets restartEmpties the schema and replays the bundle into it, so it replaces every organization, user, campaign and mailbox currently on the instance. It prints what the bundle holds and asks you to type restore before it does; --yes skips that for scripts.
Before anything is written it compares the bundle's CREDENTIALS_ENCRYPTION_KEY and KMS_LOCAL_MASTER_KEY against this host's, and refuses to continue when they differ, printing the two lines to put in .env first. That check is the point of the command: without it a restore looks like it worked, and every mailbox fails to authenticate days later with no error that names the cause.
| Flag | Does |
|---|---|
--file | The bundle. Required |
--yes | Skip the typed confirmation |
--no-blobs | Restore the database only, leaving the blob root alone |
--force | Restore even though the keys differ. Accepts losing every stored mailbox credential |
Blobs are unpacked over the blob root additively: files the bundle knows about are overwritten, anything else is left alone.
Data control walks the whole move to a new host.
org list
docker compose -p sendsets exec backend sendsetsctl org listPrints every workspace with its id, name, owner email, and member, mailbox and contact counts. It exists so the next two commands have something to name: --org accepts the id, the slug, or the owner's email, whichever you have to hand.
org export
docker compose -p sendsets exec backend sendsetsctl org export \
--org you@example.com --out /tmp/workspace.sendsets.zipWrites one workspace to a single archive file: the organization, its members and roles, mailboxes, campaigns, sequences, contacts, suppression, CRM, inbox history, and the send state that stops a migrated mailbox from sending twice its daily volume on the day it moves. It is the same archive the dashboard produces under Settings > Data, so either side of a migration can use either tool. The admin panel now offers the same for any organization under Instance > Transfers.
| Flag | Does |
|---|---|
--org | The workspace: its id, its slug, or the owner's email. Required |
--out | Where to write the archive. - writes to stdout, so it can be piped straight into ssh or a bucket. Required |
--groups | Comma-separated data groups to include. Omit for everything |
--with-credentials | Seals mailbox and integration credentials into the archive under a passphrase |
--passphrase-stdin | Reads the passphrase from stdin instead of prompting twice |
sendsetsctl org export --help prints the group list. core is always included; inbox, sending, events and logs are the ones that grow without limit, so dropping them is how you get a small archive that still rebuilds a working workspace.
An archive with credentials is the most sensitive file this product produces
It holds every mailbox password and refresh token in the workspace, protected only by the passphrase you type. SendSets stores that passphrase nowhere, so losing it means exporting again, and anyone holding both the file and the passphrase can send mail as those mailboxes.
Without --with-credentials the credential fields travel empty and every mailbox arrives on the destination needing a reconnect. Everything else moves either way.
Progress goes to stderr and the archive to the file, so --out - streams cleanly:
sendsetsctl org export --org you@example.com --out - | ssh newhost 'cat > /tmp/workspace.zip'org import
docker compose -p sendsets exec backend sendsetsctl org import \
--org you@example.com --file /tmp/workspace.sendsets.zip --dry-runApplies an archive to a workspace on this instance. It always prints what the archive holds, which rows already exist here, and which members have no account, before writing anything.
| Flag | Does |
|---|---|
--org | The destination workspace: id, slug, or owner email. Required |
--file | The archive to read. Required |
--groups | Comma-separated data groups to apply. Omit for everything in the archive |
--overwrite | Replaces rows that already exist here instead of keeping them |
--with-credentials | Prompts for the export passphrase so credentials come across |
--passphrase-stdin | Reads that passphrase from stdin |
--dry-run | Prints the report and writes nothing |
Run it with --dry-run first. The report is the same preflight the dashboard shows, and it costs nothing. The admin panel offers the same import, preflight included, under Instance > Transfers.
The whole import runs in one transaction: if any part fails, nothing lands and the workspace is untouched. Members are matched to accounts on this instance by email address, and anyone without one has their rows reassigned to the workspace owner, named in the report before you commit. An archive carries no password material, so it can never create an account here.
org export and org import are the per-workspace tool and backup is the instance-level one. They are not interchangeable: a bundle cannot be applied to one workspace, and a workspace archive cannot restore an instance.
Billing history, plan overrides, worker placement, mailbox sync checkpoints and warmup pool membership are exported for the record but never applied: each belongs to the instance rather than to the workspace. Export and import has the full table.
The API commands
Everything in this section talks to the public REST API with an API key, so it runs from anywhere: your laptop, a CI job, an agent's sandbox. It needs no database access and works against the hosted service and self-hosted instances alike.
export SENDSETS_API_KEY=ssk_... # Settings > API keys
export SENDSETS_API_URL=https://api.your-instance.com # omit for the hosted service
sendsetsctl me # who the key is, and its scopes
sendsetsctl campaign list
sendsetsctl campaign start --id <uuid>Every command prints the API's JSON response to stdout, untouched, and exits 1 on failure with the API's own code and request_id on stderr. What a key can do is exactly its granted permissions; sendsetsctl me shows them.
The families
| Family | Covers |
|---|---|
me | Identity and granted scopes |
campaign | List, get, create, update, delete, sequence steps, sender pool, preflight, start, stop, test email, send log |
contact | Search, get, lookup by address, create, update, delete, notes, timeline, import, export, custom fields |
mailbox | List, get, update, disconnect, auth check, sync state, sending behaviour, verify, send, warmup start/pause/resume/stop/status |
inbox | List, count, thread, mark seen, reply, compose, agent drafts, scheduled sends |
analytics | Dashboard, deliverability, warmup, accounts, campaigns, usage, audit logs |
settings | Outreach and suppression settings |
webhook | Endpoints, secrets, deliveries, event types |
apikey | Key self-service: list, create, update, revoke, the scope catalog |
template | Reply templates |
crm | Pipelines, deals, tasks |
sendsetsctl <family> --help lists a family's subcommands, and sendsetsctl <family> <subcommand> --help prints its flags and the endpoint it calls.
The raw passthrough
Anything the API can do that has no typed command yet is one api call away, so nothing is out of reach:
sendsetsctl api get "/campaigns?limit=10"
sendsetsctl api post /contacts --data '{"email":"jane@example.com"}'
sendsetsctl api patch "/campaigns/<id>" --data @changes.json
sendsetsctl api delete "/webhooks/<id>"Paths are relative to /v1. --data takes a JSON literal, - for stdin, or @file.
Conventions
- List responses are
{"data": [...], "pagination": {"next_cursor", "has_more"}}. Page with--cursoruntilhas_moreis false; the cursor is opaque. - Writes accept
--idempotency-key, and a retried command with the same key can never double-apply. Details on authentication. - A
429failure names itsRetry-After; wait it out and retry. contact listis a search:--datacarries the filter body, and omitting it lists everything.
Six commands put real mail on the wire
campaign start, campaign test-email, mailbox send, inbox reply, inbox compose and inbox approve-draft send. Everything else reads or edits drafts. Run campaign preflight before campaign start; it is free and catches missing senders, empty audiences and broken tracking.
For AI agents
The repository ships skills under skills/ (sendsets-cli for the sendsets CLI, sendsets-api for the same product surface through sendsetsctl, sendsets-ops for instance administration, sendsets-install for standing an instance up and moving it) that teach a coding agent these commands, the conventions above, and the sending-safety rules. Install them the way your agent expects, for example cp -r skills/sendsets-api ~/.claude/skills/ for Claude Code, or point the agent at the SKILL.md directly. The sendsets-cli skill is also served at https://sendsets.vercel.app/skills/sendsets-cli/SKILL.md, and https://sendsets.vercel.app/claude.md is the one-page install and sign-in walkthrough an agent can follow without a checkout. An agent given a scoped key and those skills can operate a workspace end to end without touching the database.
When Redis is down
Account recovery must not depend on the cache, so most commands treat an unreachable Redis as a warning and carry on.
| Command | Without Redis |
|---|---|
setup-link | Fails. The token lives in Redis, so there is nowhere to put it |
user reset-password without --password-stdin | Fails. The link is bound to a nonce in Redis. The message points you at the --password-stdin form |
user reset-password --password-stdin | Works. The password changes, but existing sessions cannot be revoked |
user create | Works. The new account is not warmed into the cache, which is harmless |
status | Works, and reports redis_unreachable as a finding |
org export and org import | Work. Decrypted keys are not cached, so each workspace costs one extra KMS round trip |
| Everything else | Works |
Make targets
Every one of these runs sendsetsctl inside the backend container of a compose install.
| Target | Runs |
|---|---|
make claim | Finds or prints the first-run claim link, and says what to do instead when the instance is already claimed |
make doctor | sendsetsctl status, non-zero on any error-severity check |
make cli ARGS="..." | Any command, with a TTY attached so prompts work |
make grant-admin EMAIL=... ROLE=... | user grant-admin |
make revoke-admin EMAIL=... | user revoke-admin |
See also
- First run for claiming a fresh instance and provisioning the owner unattended
- Accounts and access for registration modes, invitations, login codes and single sign-on
- Instance health for every check
statuscan report - Troubleshooting for symptoms and the command that fixes each one
- Export and import for what an archive contains and what deliberately does not travel
- Configuration reference for every variable named here
- API authentication and permissions for the keys and scopes the API commands run on
fleet
Manages the machines running SendSets. Every process on a machine you own is a node: a worker sends and syncs mail, a consumer processes events. Both enrol with a token, heartbeat, and pull the version the control plane tells them to run.
Adding a machine is two commands:
sendsetsctl fleet join-tokenThen on the machine itself:
curl -fsSL https://<your-instance>/join.sh | sh -s -- \
--url https://<your-instance> --token <token> --role workerThe token is shown once. Issuing another revokes the previous one; machines that already joined are unaffected.
sendsetsctl fleet listROLE NAME STATE VERSION REGION MEM SEEN ID
worker box-1 live v1.4.2 eu-central 128MB 12s ago de434ce4-...
consumer events-1 live v1.0.0 -> v1.4.2 - 96MB 30s ago 2b334317-...STATE is live, unreachable (enrolled but silent) or stopped. A version shown as a -> b has not picked up the target yet. --role worker narrows it; --json is machine-readable.
Moving the fleet:
sendsetsctl fleet version # what the fleet should be on
sendsetsctl fleet version v1.4.2 # move everything to a tag
sendsetsctl fleet channel stable # follow releases again
sendsetsctl fleet pin <node-id> v1.4.1 # hold or canary one machine
sendsetsctl fleet pin <node-id> # clear that pinSetting a tag also pins the channel, so a release landing later does not undo a deliberate rollback.
sendsetsctl fleet remove <node-id>Forgets a node. Any mailboxes it carried are re-placed within a few minutes. It does not stop the process: a machine still running re-joins on its next heartbeat, so stop the service there too.