74 lines
2.4 KiB
Plaintext
74 lines
2.4 KiB
Plaintext
---
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layout: commands
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page_title: 'Commands: Maint'
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description: |
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The `maint` command provides control of both service and node maintenance mode
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---
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# Consul Maint
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Command: `consul maint`
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Corresponding HTTP API Endpoint: [\[PUT\] /v1/agent/maintenance](/api-docs/agent#enable-maintenance-mode)
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The `maint` command provides control of service maintenance mode.
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Using the command, it is possible to mark a service provided by a node or all the services on the
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node as a whole as "under maintenance". In this mode of operation, the service
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will not appear in DNS query results, or API results. This effectively
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takes the service out of the pool of available "healthy" nodes of a service.
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Under the hood, maintenance mode is activated by registering a health check in
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critical status against a service, and deactivated by deregistering the
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health check.
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The table below shows this command's [required ACLs](/api#authentication). Configuration of
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[blocking queries](/api/features/blocking) and [agent caching](/api/features/caching)
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are not supported from commands, but may be from the corresponding HTTP endpoint.
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| ACL Required |
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| ------------ |
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| `node:write` |
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## Usage
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Usage: `consul maint [options]`
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#### API Options
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@include 'http_api_options_client.mdx'
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#### Command Options
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- `-enable` - Enable node-wide maintenance mode flag. If combined with the
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`-service` flag, we operate on a specific service ID instead. Node and
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service maintenance flags are independent.
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- `-disable` - Disable the node-wide maintenance flag. If combined with the
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`-service` flag, we operate on a specific service ID instead. Node and
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service maintenance flags are independent.
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- `-reason` - An optional reason for placing the service into
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maintenance mode. If provided, this reason will be visible in the newly-
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registered critical check's "Notes" field.
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- `-service` - An optional service ID to control maintenance mode for a given service. By
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providing this flag, the `-enable` and `-disable` flags functionality is
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modified to operate on the given service ID.
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## List mode
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If neither `-enable` nor `-disable` are passed, the `maint` command will
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switch to "list mode", displaying any current maintenances. This may return
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blank if nothing is currently under maintenance. The output will look like:
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```shell-session
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$ consul maint
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Node:
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Name: node1.local
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Reason: This node is broken.
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Service:
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ID: redis
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Reason: Redis is currently offline.
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```
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