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<!--
Do not modify this file directly. Instead, copy entries that you wish to
modify from this file into kms-site.xml and change them there. If
kms-site.xml does not already exist, create it.
-->
<configuration>
<property>
<name>hadoop.kms.http.port</name>
<value>9600</value>
<description>
The HTTP port for KMS REST API.
</description>
</property>
<property>
<name>hadoop.kms.http.host</name>
<value>0.0.0.0</value>
<description>
The bind host for KMS REST API.
</description>
</property>
<property>
<name>hadoop.kms.http.administrators</name>
<value></value>
<description>ACL for the admins, this configuration is used to control
who can access the default KMS servlets. The value should be a comma
separated list of users and groups. The user list comes first and is
separated by a space followed by the group list,
e.g. "user1,user2 group1,group2". Both users and groups are optional,
so "user1", " group1", "", "user1 group1", "user1,user2 group1,group2"
are all valid (note the leading space in " group1"). '*' grants access
to all users and groups, e.g. '*', '* ' and ' *' are all valid.
</description>
</property>
<property>
<name>hadoop.kms.ssl.enabled</name>
<value>false</value>
<description>
Whether SSL is enabled. Default is false, i.e. disabled.
</description>
</property>
<!-- HTTP properties -->
<property>
<name>hadoop.http.max.threads</name>
<value>1000</value>
<description>
The maxmimum number of threads.
</description>
</property>
<property>
<name>hadoop.http.max.request.header.size</name>
<value>65536</value>
<description>
The maxmimum HTTP request header size.
</description>
</property>
<property>
<name>hadoop.http.max.response.header.size</name>
<value>65536</value>
<description>
The maxmimum HTTP response header size.
</description>
</property>
<property>
<name>hadoop.http.temp.dir</name>
<value>${hadoop.tmp.dir}/kms</value>
<description>
KMS temp directory.
</description>
</property>
<property>
<name>hadoop.http.socket.backlog.size</name>
<value>500</value>
<description>
KMS Server accept queue size.
</description>
</property>
<property>
<name>hadoop.http.idle_timeout.ms</name>
<value>60000</value>
<description>
KMS Server connection timeout in milliseconds.
</description>
</property>
<!-- KMS Backend KeyProvider -->
<property>
<name>hadoop.kms.key.provider.uri</name>
<value>jceks://file@/${user.home}/kms.keystore</value>
<description>
URI of the backing KeyProvider for the KMS.
</description>
</property>
<property>
<name>hadoop.security.keystore.java-keystore-provider.password-file</name>
<value></value>
<description>
If using the JavaKeyStoreProvider, the file name for the keystore password.
</description>
</property>
<!-- KMS Cache -->
<property>
<name>hadoop.kms.cache.enable</name>
<value>true</value>
<description>
Whether the KMS will act as a cache for the backing KeyProvider.
When the cache is enabled, operations like getKeyVersion, getMetadata,
and getCurrentKey will sometimes return cached data without consulting
the backing KeyProvider. Cached values are flushed when keys are deleted
or modified.
</description>
</property>
<property>
<name>hadoop.kms.cache.timeout.ms</name>
<value>600000</value>
<description>
Expiry time for the KMS key version and key metadata cache, in
milliseconds. This affects getKeyVersion and getMetadata.
</description>
</property>
<property>
<name>hadoop.kms.current.key.cache.timeout.ms</name>
<value>30000</value>
<description>
Expiry time for the KMS current key cache, in milliseconds. This
affects getCurrentKey operations.
</description>
</property>
<!-- KMS Audit -->
<property>
<name>hadoop.kms.audit.aggregation.window.ms</name>
<value>10000</value>
<description>
Duplicate audit log events within the aggregation window (specified in
ms) are quashed to reduce log traffic. A single message for aggregated
events is printed at the end of the window, along with a count of the
number of aggregated events.
</description>
</property>
<!-- KMS Security -->
<property>
<name>hadoop.kms.authentication.type</name>
<value>simple</value>
<description>
Authentication type for the KMS. Can be either 'simple' (default) or
'kerberos'.
</description>
</property>
<property>
<name>hadoop.kms.authentication.kerberos.keytab</name>
<value>${user.home}/kms.keytab</value>
<description>
Path to the keytab with credentials for the configured Kerberos principal.
</description>
</property>
<property>
<name>hadoop.kms.authentication.kerberos.principal</name>
<value>HTTP/localhost</value>
<description>
The Kerberos principal to use for the HTTP endpoint.
The principal must start with 'HTTP/' as per the Kerberos HTTP SPNEGO specification.
</description>
</property>
<property>
<name>hadoop.kms.authentication.kerberos.name.rules</name>
<value>DEFAULT</value>
<description>
Rules used to resolve Kerberos principal names.
</description>
</property>
<!-- Authentication cookie signature source -->
<property>
<name>hadoop.kms.authentication.signer.secret.provider</name>
<value>random</value>
<description>
Indicates how the secret to sign the authentication cookies will be
stored. Options are 'random' (default), 'string' and 'zookeeper'.
If using a setup with multiple KMS instances, 'zookeeper' should be used.
</description>
</property>
<!-- Configuration for 'zookeeper' authentication cookie signature source -->
<property>
<name>hadoop.kms.authentication.signer.secret.provider.zookeeper.path</name>
<value>/hadoop-kms/hadoop-auth-signature-secret</value>
<description>
The Zookeeper ZNode path where the KMS instances will store and retrieve
the secret from.
</description>
</property>
<property>
<name>hadoop.kms.authentication.signer.secret.provider.zookeeper.connection.string</name>
<value>#HOSTNAME#:#PORT#,...</value>
<description>
The Zookeeper connection string, a list of hostnames and port comma
separated.
</description>
</property>
<property>
<name>hadoop.kms.authentication.signer.secret.provider.zookeeper.auth.type</name>
<value>none</value>
<description>
The Zookeeper authentication type, 'none' (default) or 'sasl' (Kerberos).
</description>
</property>
<property>
<name>hadoop.kms.authentication.signer.secret.provider.zookeeper.kerberos.keytab</name>
<value>/etc/hadoop/conf/kms.keytab</value>
<description>
The absolute path for the Kerberos keytab with the credentials to
connect to Zookeeper.
</description>
</property>
<property>
<name>hadoop.kms.authentication.signer.secret.provider.zookeeper.kerberos.principal</name>
<value>kms/#HOSTNAME#</value>
<description>
The Kerberos service principal used to connect to Zookeeper.
</description>
</property>
<property>
<name>hadoop.kms.audit.logger</name>
<value>org.apache.hadoop.crypto.key.kms.server.SimpleKMSAuditLogger</value>
<description>
The audit logger for KMS. It is a comma-separated list of KMSAuditLogger
class names. Default is the text-format SimpleKMSAuditLogger only.
If this is not configured, default will be used.
</description>
</property>
<property>
<name>hadoop.kms.key.authorization.enable</name>
<value>true</value>
<description>Boolean property to Enable/Disable per Key authorization</description>
</property>
<property>
<name>hadoop.security.kms.encrypted.key.cache.size</name>
<value>100</value>
<description>The size of the cache. This is the maximum number of EEKs that
can be cached under each key name.</description>
</property>
<property>
<name>hadoop.security.kms.encrypted.key.cache.low.watermark</name>
<value>0.3</value>
<description>A low watermark on the cache. For each key name, if after a get call,
the number of cached EEKs are less than (size * low watermark),
then the cache under this key name will be filled asynchronously.
For each key name, only 1 thread could be running for the asynchronous filling.</description>
</property>
<property>
<name>hadoop.security.kms.encrypted.key.cache.num.fill.threads</name>
<value>2</value>
<description>The maximum number of asynchronous threads overall, across key names,
allowed to fill the queue in a cache.</description>
</property>
<property>
<name>hadoop.security.kms.encrypted.key.cache.expiry</name>
<value>43200000</value>
<description>The cache expiry time, in milliseconds. Internally Guava cache is used as the cache implementation.
The expiry approach is expireAfterAccess</description>
</property>
</configuration>
