mirror of https://github.com/status-im/consul.git
ACL documentation (#4824)
* Updating the ACL guide. * Update the docs correctly * Finish updating the ACL docs - for now.
This commit is contained in:
Matt Keeler
Jack Pearkes
parent
1757fbc0aa
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1ac888aa8c
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@ -509,6 +509,90 @@ default will automatically work with some tooling.
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#### Configuration Key Reference
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* <a name="acl"></a><a href="#acl">`acl`</a> - This object allows a number
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of sub-keys to be set which controls the ACL system. Configuring the
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ACL system within the ACL stanza was added in Consul 1.4.0
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The following sub-keys are available:
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* <a name="acl_enabled"></a><a href="#acl_enabled">`enabled`</a> - Enables ACLs.
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* <a name="acl_policy_ttl"></a><a href="#acl_policy_ttl">`policy_ttl`</a> - Used to control
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Time-To-Live caching of ACL policies. By default, this is 30 seconds. This setting has a
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major performance impact: reducing it will cause more frequent refreshes while increasing
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it reduces the number of refreshes. However, because the caches are not actively invalidated,
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ACL policy may be stale up to the TTL value.
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* <a name="acl_token_ttl"></a><a href="#acl_token_ttl">`token_ttl`</a> - Used to control
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Time-To-Live caching of ACL tokens. By default, this is 30 seconds. This setting has a
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major performance impact: reducing it will cause more frequent refreshes while increasing
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it reduces the number of refreshes. However, because the caches are not actively invalidated,
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ACL token may be stale up to the TTL value.
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* <a name="acl_down_policy"></a><a href="#acl_down_policy">`down_policy`</a> - Either
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"allow", "deny", "extend-cache" or "async-cache"; "extend-cache" is the default. In the case that a
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policy or token cannot be read from the [`primary_datacenter`](#primary_datacenter) or leader
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node, the down policy is applied. In "allow" mode, all actions are permitted, "deny" restricts
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all operations, and "extend-cache" allows any cached objects to be used, ignoring their TTL
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values. If a non-cached ACL is used, "extend-cache" acts like "deny".
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The value "async-cache" acts the same way as "extend-cache" but performs updates
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asynchronously when ACL is present but its TTL is expired, thus, if latency is bad between
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the primary and secondary datacenters, latency of operations is not impacted.
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* <a name="acl_default_policy"></a><a href="#acl_default_policy">`default_policy`</a> - Either
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"allow" or "deny"; defaults to "allow" but this will be changed in a future major release.
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The default policy controls the behavior of a token when there is no matching rule. In "allow" mode,
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ACLs are a blacklist: any operation not specifically prohibited is allowed. In "deny" mode, ACLs are
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a whitelist: any operation not specifically allowed is blocked. *Note*: this will not take effect until
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you've enabled ACLs.
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* <a name=`acl_enable_token_replication"></a><a href="#acl_enable_token_replication">`enable_token_replication`</a> - By
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default secondary Consul datacenters will perform replication of only ACL policies. Setting this configuration will
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also enable ACL token replication.
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* <a name="acl_tokens"></a><a href="#acl_tokens">`tokens`</a> - This object holds
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all of the configured ACL tokens for the agents usage.
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* <a name="acl_tokens_master"></a><a href="#acl_tokens_master">`master`</a> - Only used
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for servers in the [`primary_datacenter`](#primary_datacenter). This token will be created with management-level
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permissions if it does not exist. It allows operators to bootstrap the ACL system
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with a token Secret ID that is well-known.
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<br/><br/>
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The `master` token is only installed when a server acquires cluster leadership. If
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you would like to install or change the `acl_master_token`, set the new value for `master`
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in the configuration for all servers. Once this is done, restart the current leader to force a
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leader election. If the `master` token is not supplied, then the servers do not create a master
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token. When you provide a value, it should be a UUID. To maintaing backwards compatibility
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and an upgrade path this restriction is not currently enforced but will be in a future major
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Consul release.
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* <a name="acl_tokens_default"></a><a href="#acl_tokens_default">`default`</a> - When provided,
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the agent will use this token when making requests to the Consul servers. Clients can
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override this token on a per-request basis by providing the "?token" query parameter.
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When not provided, the empty token, which maps to the 'anonymous' ACL token, is used.
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* <a name="acl_tokens_agent"></a><a href="#acl_tokens_agent">`agent`</a> - Used for clients
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and servers to perform internal operations. If this isn't specified, then the
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<a href="#acl_tokens_default">`default`</a> will be used. This was added in Consul
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<br/><br/>
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This token must at least have write access to the node name it will register as in order to set any
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of the node-level information in the catalog such as metadata, or the node's tagged addresses. There
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are other places this token is used, please see [ACL Agent Token](/docs/guides/acl.html#acl-agent-token)
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for more details.
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* <a name="acl_tokens_agent_master"></a><a href="#acl_tokens_agent_master">`agent_master`</a> -
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Used to access <a href="/api/agent.html">agent endpoints</a> that require agent read
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or write privileges, or node read privileges, even if Consul servers aren't present to validate
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any tokens. This should only be used by operators during outages, regular ACL tokens should normally
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be used by applications.
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* <a name="acl_tokens_replication"></a><a href="#acl_tokens_replication">`replication`</a> -
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The ACL token used to authorize secondary datacenters with the primary datacenter for replication
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operations. This token is required for servers outside the [`primary_datacenter`](#primary_datacenter) when
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ACLs are enabled. This token may be provided later using the [agent token API](/api/agent.html#update-acl-tokens)
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on each server. If the `replication` token is set in the config. This token must have at least "read" permissions
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on ACL data but if ACL token replication is enabled then it must have "write" permissions.
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* <a name="acl_datacenter"></a><a href="#acl_datacenter">`acl_datacenter`</a> - **This field is
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deprecated in Consul 1.4.0. See the [`primary_datacenter`](#primary_datacenter) field instead.**
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@ -516,14 +600,16 @@ default will automatically work with some tooling.
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it must be set on them too. In Consul 0.8 and later, this also enables agent-level enforcement
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of ACLs. Please see the [ACL Guide](/docs/guides/acl.html) for more details.
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* <a name="acl_default_policy"></a><a href="#acl_default_policy">`acl_default_policy`</a> - Either
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* <a name="acl_default_policy_legacy"></a><a href="#acl_default_policy_legacy">`acl_default_policy`</a> - **Deprecated in Consul 1.4.0.
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See the [`acl.default_policy`](#acl_default_policy) field instead.** Either
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"allow" or "deny"; defaults to "allow". The default policy controls the behavior of a token when
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there is no matching rule. In "allow" mode, ACLs are a blacklist: any operation not specifically
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prohibited is allowed. In "deny" mode, ACLs are a whitelist: any operation not
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specifically allowed is blocked. *Note*: this will not take effect until you've set `primary_datacenter`
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to enable ACL support.
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* <a name="acl_down_policy"></a><a href="#acl_down_policy">`acl_down_policy`</a> - Either
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* <a name="acl_down_policy_legacy"></a><a href="#acl_down_policy_legacy">`acl_down_policy`</a> - **Deprecated in Consul 1.4.0.
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See the [`acl.down_policy`](#acl_down_policy) field instead.**Either
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"allow", "deny", "extend-cache" or "async-cache"; "extend-cache" is the default. In the case that the
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policy for a token cannot be read from the [`primary_datacenter`](#primary_datacenter) or leader
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node, the down policy is applied. In "allow" mode, all actions are permitted, "deny" restricts
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@ -533,7 +619,8 @@ default will automatically work with some tooling.
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asynchronously when ACL is present but its TTL is expired, thus, if latency is bad between
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ACL authoritative and other datacenters, latency of operations is not impacted.
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* <a name="acl_agent_master_token"></a><a href="#acl_agent_master_token">`acl_agent_master_token`</a> -
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* <a name="acl_agent_master_token_legacy"></a><a href="#acl_agent_master_token_legacy">`acl_agent_master_token`</a> -
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**Deprecated in Consul 1.4.0. See the [`acl.tokens.agent_master`](#acl_tokens_agent_master) field instead.**
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Used to access <a href="/api/agent.html">agent endpoints</a> that require agent read
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or write privileges, or node read privileges, even if Consul servers aren't present to validate
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any tokens. This should only be used by operators during outages, regular ACL tokens should normally
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@ -541,8 +628,9 @@ default will automatically work with some tooling.
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<a href="#acl_enforce_version_8">`acl_enforce_version_8`</a> is set to true. Please see
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[ACL Agent Master Token](/docs/guides/acl.html#acl-agent-master-token) for more details.
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* <a name="acl_agent_token"></a><a href="#acl_agent_token">`acl_agent_token`</a> - Used for clients
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and servers to perform internal operations. If this isn't specified, then the
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* <a name="acl_agent_token_legacy"></a><a href="#acl_agent_token_legacy">`acl_agent_token`</a> -
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**Deprecated in Consul 1.4.0. See the [`acl.tokens.agent`](#acl_tokens_agent) field instead.**
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Used for clients and servers to perform internal operations. If this isn't specified, then the
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<a href="#acl_token">`acl_token`</a> will be used. This was added in Consul 0.7.2.
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This token must at least have write access to the node name it will register as in order to set any
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@ -551,13 +639,15 @@ default will automatically work with some tooling.
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for more details.
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* <a name="acl_enforce_version_8"></a><a href="#acl_enforce_version_8">`acl_enforce_version_8`</a> -
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**Deprecated in Consul 1.4.0**
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Used for clients and servers to determine if enforcement should occur for new ACL policies being
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previewed before Consul 0.8. Added in Consul 0.7.2, this defaults to false in versions of
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Consul prior to 0.8, and defaults to true in Consul 0.8 and later. This helps ease the
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transition to the new ACL features by allowing policies to be in place before enforcement begins.
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Please see the [ACL Guide](/docs/guides/acl.html#version_8_acls) for more details.
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* <a name="acl_master_token"></a><a href="#acl_master_token">`acl_master_token`</a> - Only used
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* <a name="acl_master_token_legacy"></a><a href="#acl_master_token_legacy">`acl_master_token`</a> -
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**Deprecated in Consul 1.4.0. See the [`acl.tokens.master`](#acl_tokens_master) field instead.** Only used
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for servers in the [`primary_datacenter`](#primary_datacenter). This token will be created with management-level
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permissions if it does not exist. It allows operators to bootstrap the ACL system
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with a token ID that is well-known.
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@ -569,7 +659,8 @@ default will automatically work with some tooling.
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token. When you provide a value, it can be any string value. Using a UUID would ensure that it looks
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the same as the other tokens, but isn't strictly necessary.
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* <a name="acl_replication_token"></a><a href="#acl_replication_token">`acl_replication_token`</a> -
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* <a name="acl_replication_token_legacy"></a><a href="#acl_replication_token_legacy">`acl_replication_token`</a> -
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**Deprecated in Consul 1.4.0. See the [`acl.tokens.replication`](#acl_tokens_replication) field instead.**
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Only used for servers outside the [`primary_datacenter`](#primary_datacenter) running Consul 0.7 or later.
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When provided, this will enable [ACL replication](/docs/guides/acl.html#replication) using this
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token to retrieve and replicate the ACLs to the non-authoritative local datacenter. In Consul 0.9.1
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@ -583,12 +674,15 @@ default will automatically work with some tooling.
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in the cache can be resolved during the outage using the replicated set of ACLs. Please see the
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[ACL Guide](/docs/guides/acl.html#replication) replication section for more details.
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* <a name="acl_token"></a><a href="#acl_token">`acl_token`</a> - When provided, the agent will use this
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* <a name="acl_token_legacy"></a><a href="#acl_token_legacy">`acl_token`</a> -
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**Deprecated in Consul 1.4.0. See the [`acl.tokens.default`](#acl_tokens_default) field instead.**
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When provided, the agent will use this
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token when making requests to the Consul servers. Clients can override this token on a per-request
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basis by providing the "?token" query parameter. When not provided, the empty token, which maps to
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the 'anonymous' ACL policy, is used.
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* <a name="acl_ttl"></a><a href="#acl_ttl">`acl_ttl`</a> - Used to control Time-To-Live caching of ACLs.
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* <a name="acl_ttl_legacy"></a><a href="#acl_ttl_legacy">`acl_ttl`</a> -
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**Deprecated in Consul 1.4.0. See the [`acl.token_ttl`](#acl_token_ttl) field instead.**Used to control Time-To-Live caching of ACLs.
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By default, this is 30 seconds. This setting has a major performance impact: reducing it will cause
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more frequent refreshes while increasing it reduces the number of refreshes. However, because the caches
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are not actively invalidated, ACL policy may be stale up to the TTL value.
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@ -355,6 +355,11 @@
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<ul class="nav">
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<li<%= sidebar_current("docs-guides-acl") %>>
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<a href="/docs/guides/acl.html">ACLs</a>
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<ul class="nav">
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<li<%= sidebar_current("docs-guides-acl-legacy") %>>
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<a href="/docs/guides/acl-legacy.html">Legacy</a>
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</li>
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</ul>
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</li>
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<li<%= sidebar_current("docs-guides-servers") %>>
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<a href="/docs/guides/servers.html">Adding/Removing Servers</a>
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