Calvin Leung Huang 87feab4492

* Add new top level config value docs, add VAULT_API_ADDR, purge old references

* Fix indentation

* Update wording on ha.html

* Add section on split data/HA mode

* Fix grammar

2017-11-10 20:06:07 -05:00

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layout	page_title	sidebar_current	description
docs	Zookeeper - Storage Backends - Configuration	docs-configuration-storage-zookeeper	The Zookeeper storage backend is used to persist Vault's data in Zookeeper.

Zookeeper Storage Backend

The Zookeeper storage backend is used to persist Vault's data in Zookeeper.

High Availability – the Zookeeper storage backend supports high availability.
Community Supported – the Zookeeper storage backend is supported by the community. While it has undergone review by HashiCorp employees, they may not be as knowledgeable about the technology. If you encounter problems with them, you may be referred to the original author.

storage "zookeeper" {
  address = "localhost:2181"
  path    = "vault/"
}

`zookeeper` Parameters

address (string: "localhost:2181") – Specifies the addresses of the Zookeeper instances as a comma-separated list.
path (string: "vault/") – Specifies the path in Zookeeper where data will be stored.

The following optional settings can be used to configure zNode ACLs:

~> Warning! If neither auth_info nor znode_owner are set, the backend will not authenticate with Zookeeper and will set the OPEN_ACL_UNSAFE ACL on all nodes. In this scenario, anyone connected to Zookeeper could change Vault’s znodes and, potentially, take Vault out of service.

auth_info (string: "") – Specifies an authentication string in Zookeeper AddAuth format. For example, digest:UserName:Password could be used to authenticate as user UserName using password Password with the digest mechanism.

znode_owner (string: "") – If specified, Vault will always set all permissions (CRWDA) to the ACL identified here via the Schema and User parts of the Zookeeper ACL format. The expected format is schema:user-ACL-match, for example:

# Access for user "UserName" with corresponding digest "HIDfRvTv623G=="
digest:UserName:HIDfRvTv623G==

# Access from localhost only
ip:127.0.0.1

# Access from any host on the 70.95.0.0 network (Zookeeper 3.5+)
ip:70.95.0.0/16

`zookeeper` Examples

Custom Address and Path

This example shows configuring Vault to communicate with a Zookeeper installation running on a custom port and to store data at a custom path.

storage "zookeeper" {
  address = "localhost:3253"
  path    = "my-vault-data/"
}

zNode Vault User Only

This example instructs Vault to set an ACL on all of its zNodes which permit access only to the user "vaultUser". As per Zookeeper's ACL model, the digest value in znode_owner must match the user in znode_owner.

storage "zookeeper" {
  znode_owner = "digest:vaultUser:raxgVAfnDRljZDAcJFxznkZsExs="
  auth_info   = "digest:vaultUser:abc"
}

zNode Localhost Only

This example instructs Vault to only allow access from localhost. As this is the ip no auth_info is required since Zookeeper uses the address of the client for the ACL check.

storage "zookeeper" {
  znode_owner = "ip:127.0.0.1"
}

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