2015-01-21 22:07:54 +00:00
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---
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layout: "docs"
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page_title: "Commands: Maint"
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sidebar_current: "docs-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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The `maint` command provides control of both service and node maintenance mode.
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Using the command, it is possible to mark a service provided by a node or the
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node as a whole as "under maintenance". In this mode of operation, the service
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or node will not appear in DNS query results, or API results. This effectively
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takes the service or node out of the pool of available "healthy" nodes.
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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 node or service, and deactivated by deregistering the
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health check.
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## Usage
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Usage: `consul maint [options]`
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2015-01-22 18:29:48 +00:00
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All of the command line arguments are optional.
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2015-01-21 22:07:54 +00:00
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The list of available flags are:
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* `-enable` - Enable maintenance mode on a given service or node. If
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combined with the `-service` flag, we operate on a specific service ID.
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Otherwise, node maintenance mode is enabled.
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* `-disable` - Disable maintenance mode on a given service or node. If
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combined with the `-service` flag, we operate on a specific service ID.
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Otherwise, node maintenance mode is disabled.
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* `-reason` - An optional reason for placing the node or 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 node maintenance mode for. 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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* `-token` - ACL token to use. Defaults to that of agent.
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* `-http-addr` - Address to the HTTP server of the agent you want to contact
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to send this command. If this isn't specified, the command will contact
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"127.0.0.1:8500" which is the default HTTP address of a Consul agent.
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2015-01-22 18:29:48 +00:00
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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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```
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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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