DataStax Agent configuration

The address.yaml configuration file

The address.yaml file contains configuration options for the DataStax Agent.

Most of these properties can be set in the [agent_config] section of cluster_name.conf on the opscenterd machine, which automatically propagates the properties to all agents. Some properties or some cases might require setting these properties directly in address.yaml on applicable agents. When manually installing DataStax Agents, stomp_interface is the only property in most environments that needs to be explicitly configured. When installing DataStax Agents automatically, stomp_interface is configured for you.

For more information about viewing agent status and troubleshooting agent issues, see Agents View.

Configuration options

use_ssl

Whether or not to use SSL communication between the agent and opscenterd. Affects both the STOMP connection and agent HTTP server. Corresponds to [agents].use_ssl in opscenterd.conf. Setting this option to true turns on SSL connections. Example: use_ssl: true

stomp_port

The stomp_port used by opscenterd. Example: stomp_port: 61620

stomp_interface

Reachable IP address of the opscenterd machine. The connection made will be on stomp_port. Example: stomp_interface: 127.0.0.1

local_interface

The IP used to identify the node. If broadcast_address is set in cassandra.yaml, this should be the same as that; otherwise, it is typically the same as listen_address in cassandra.yaml. A good check is to confirm that this address is the same as the address that nodetool ring outputs. Example: local_interface: 172.10.0.2

agent_rpc_interface

The IP that the agent HTTP server listens on. In a multiple region deployment, this is typically a private IP. Default: Matches rpc_interface (native_transport_interface) from cassandra.yaml. Example: agent_rpc_interface: 172.10.0.2

agent_rpc_broadcast_address

The IP that the central OpsCenter process uses to connect to the DataStax agent. Default: First available resolvable address in this order: broadcast_rpc_address (native_transport_broadcast_address), rpc_address (native_transport_address), and listen_address from cassandra.yaml. Example: agent_rpc_broadcast_address: 172.10.0.2

swagger_enabled

Enables or disables the swagger UI for the agent API. Example: swagger_enabled: true

opscenter_ssl_keystore

On target nodes where DataStax Agents are running, the path to the SSL keystore file that the Agents use to connect to opscenterd. Example: opscenter_ssl_keystore: /usr/share/opscenter/ssl/agentKeystore

opscenter_ssl_keystore_password

The SSL keystore password that the agents use to connect to opscenterd. Example: opscenter_ssl_keystore_password: keystore-pass [This field may be encrypted for additional security.]

opscenter_ssl_truststore

The path to the truststore file that the agents use to connect to opscenterd. Example: opscenter_ssl_truststore: /usr/share/opscenter/ssl/trustStore

opscenter_ssl_truststore_password

The SSL truststore password that the agents use to connect to opscenterd. Default: Uses the keystore password if an SSL truststore password is not specified. Example: opscenter_ssl_truststore_password: trust-pass [This field may be encrypted for additional security.]

opscenter_ssl_strict_subject_validation

Instructs the agent to reject certificates from opscenterd when the certificate subject does not match the server's ip. This option is false by default, which means the agent attempts subject validation first. If that fails, the agent logs a warning and retries the connection without subject validation. In a later version of OpsCenter, the default will change to true. Example: opscenter_ssl_strict_subject_validation: true

poll_period

The length of time, specified in seconds, between attempts to poll metrics. Example: poll_period: 60

disk_usage_update_period

The length of time, in seconds, to wait between attempts to poll the disk for usage. Example: disk_usage_update_period: 60

rollup_state_ttl

The time-to-live (TTL) for data points stored in rollup states before data is collected in the rollup60 table. Default: (* 86400 3) Example: rollup_state_ttl: 259200

rollups60_ttl

Sets time-to-live (TTL) for rollups60 in seconds. A value of '0' prevents the data from expiring. Setting '-1' disables this rollup and prevents storing any data for it which might help reduce used disk space. Default: 604800 Example: rollups60_ttl: 604800

rollups300_ttl

Sets time-to-live (TTL) for rollups300 in seconds. A value of '0' prevents the data from expiring. Setting '-1' disables this rollup and prevents storing any data for it which might help reduce used disk space. Default: 604800 Example: rollups300_ttl: 2419200

rollups7200_ttl

Sets time-to-live (TTL) for rollups7200 in seconds. A value of '0' prevents the data from expiring. Setting '-1' disables this rollup and prevents storing any data for it which might help reduce used disk space. Default: 31536000 Example: rollups7200_ttl: 31536000

rollups86400_ttl

Sets time-to-live (TTL) for rollups86400 in seconds. A value of '0' prevents the data from expiring. Setting '-1' disables this rollup and prevents storing any data for it which might help reduce used disk space. Default: 0 Example: rollups86400_ttl: 0

rollup_rate

Maximum number of metrics that can be saved to Cassandra over the [rollup_rate_unit] period of time.this should be at least ([#tables] * 40) + 200 per minDefault: 200 (so 200/sec with default rollup_rate_unit) Example: rollup_rate: 200

rollup_rate_unit

Unit of time for rollup_rate. Choose from microsecond, millisecond, second, minute, hour, day, or month. Default: second Example: rollup_rate_unit: second

bypass_dse_metrics_storage

Enable or disable storing metrics in a separate storage DataStax Enterprise (DSE) cluster. Metrics are stored in an OpsCenter keyspace on the same DSE cluster being monitored by default. Note: storing metrics on a separate DSE cluster will place the entire OpsCenter keyspace on that cluster. Default: false. Example: bypass_dse_metrics_storage: false

jmx_host

Host used to connect to local JMX server. The default setting is localhost. This information will be sent by opscenterd for convenience, but can be configured locally as needed. Example: jmx_host: 127.0.0.1

jmx_port

Port used to connect to local JMX server. The default setting is 7199. This information will be sent by opscenterd for convenience, but can be configured locally as needed. Example: jmx_port: 7199

jmx_user

The username used to connect to the local JMX server. Example: jmx_user: jmx-username

jmx_pass

The password used to connect to the local JMX server. Example: jmx_pass: jmx-password [This field may be encrypted for additional security.]

jmx_queue_poll_timeout

The number of seconds to wait for an available JMX connection before timing out. Default: 10. Example: jmx_queue_poll_timeout: 10

status_reporting_interval

The length of time, in seconds, between sending agent health information. Example: status_reporting_interval: 20

disk_wait

The amount of time in milliseconds to wait for disk operations when collecting metrics. Default: 5000. Example: disk_wait: 5000

ec2_metadata_api_host

The ec2 metadata api host, used to determine information about this node, if it is on ec2. Example: ec2_metadata_api_host: 169.254.169.254

metrics_enabled

Whether or not to collect and store metrics for the local node. Setting this option to false turns off metrics collection. Default: true. Example: metrics_enabled: true

jmx_metrics_threadpool_size

The size of the threadpool used for collecting metrics over JMX. Example: jmx_metrics_threadpool_size: 6

metrics_ignored_keyspaces

A comma-separated list of keyspaces ignored by metrics collection. Example: metrics_ignored_keyspaces: ks1, ks2, ks3

metrics_ignored_column_families

A comma-separated list of tables (formerly referred to as column families) ignored by metrics collection. Example: metrics_ignored_column_families: ks1.cf1, ks1.cf2, ks2.cf1

metrics_ignored_solr_cores

A comma separated list of solr cores that will be ignored by metric collection. Example: metrics_ignored_solr_cores: ks1.cf1, ks1.cf2, ks2.cf1

hosts

The DataStax Enterprise node or nodes responsible for storing OpsCenter data. By default, this will be the local node, but may be configured to store data on a separate cluster. The hosts option accepts an array of strings specifying the IP addresses of the node or nodes. For example, ["1.2.3.4"] or ["1.2.3.4", "1.2.3.5"]. Example: hosts: ["127.0.0.1"]

cassandra_port

Port used to connect to the storage cassandra node. The native transport port. Example: cassandra_port: 9042

cassandra_user

The Username used to connect to storage cassandra when authentication is enabled. Example: cassandra_user: cassandra

cassandra_pass

The password used to connect to storage cassandra when authentication is enabled. Example: cassandra_pass: cassandra [This field may be encrypted for additional security.]

max_reconnect_time

The maximum time in ms that the agent will wait between cassandra reconnect attempts. Example: max_reconnect_time: 15000

max_pending_repairs

The maximum number of repairs that may be pending, exceeding this number blocks new repairs. Example: max_pending_repairs: 5

ssl_keystore

The SSL keystore location for the storage cluster that agents use to connect to CQL. Example: ssl_keystore: /etc/dse/conf/.keystore

ssl_keystore_password

The SSL keystore password for the storage cluster that agents use to connect to CQL. Example: ssl_keystore_password: keystore-pass [This field may be encrypted for additional security.]

ssl_truststore

The SSL truststore location for the storage cluster that agents use to connect to CQL. Example: ssl_truststore: /etc/dse/conf/.truststore

ssl_truststore_password

The SSL truststore password for the storage cluster that agents use to connect to CQL. Example: ssl_truststore_password: truststore-pass [This field may be encrypted for additional security.]

monitored_cassandra_port

Port used to connect to the monitored cassandra node. The native transport port. Example: monitored_cassandra_port: 9042

monitored_cassandra_user

The Username used to connect to monitored cassandra when authentication is enabled. Example: monitored_cassandra_user: cassandra

monitored_cassandra_pass

The password used to connect to monitored cassandra when authentication is enabled. Example: monitored_cassandra_pass: cassandra-pass [This field may be encrypted for additional security.]

monitored_ssl_keystore

The SSL keystore location for the monitored cluster that agents use to connect to CQL. Example: monitored_ssl_keystore: /etc/dse/conf/.keystore

monitored_ssl_keystore_password

The SSL keystore password for the monitored cluster that agents use to connect to CQL. Example: monitored_ssl_keystore_password: keystore-pass [This field may be encrypted for additional security.]

monitored_ssl_truststore

The SSL truststore location for the monitored cluster that agents use to connect to CQL. Example: monitored_ssl_truststore: /etc/dse/conf/.truststore

monitored_ssl_truststore_password

The SSL truststore password for the monitored cluster that agents use to connect to CQL. Example: monitored_ssl_truststore_password: truststore-pass [This field may be encrypted for additional security.]

kerberos_service

The Kerberos service name to use when using Kerberos authentication within DSE. Example: kerberos_service: cassandra-kerberos

kerberos_keytab_location

The Kerberos keytab location when using Kerberos authentication within DSE. Example: kerberos_keytab_location: /path/to/keytab.keytab

kerberos_client_principal

The Kerberos client principal to use when using Kerberos authentication within DSE. Example: kerberos_client_principal: cassandra@hostname

storage_keyspace

The keyspace that the agent will use to store data. Example: storage_keyspace: OpsCenter

alias

Provides an alias for the agent to use when sending node details to OpsCenter. The alias is useful when the agent is unable to get the localhost name from InetAddress.getLocalHost(). Example: alias: MyNodeOne

storage_dse_connection_timeout

The maximum time in seconds that the agent waits while attempting to connect to the DSE cluster. Default: 30. Example: storage_dse_connection_timeout: 30

storage_dse_host_read_timeout

The maximum time in milliseconds that the agent waits for a storage node to return a response from a read request before considering said node unresponsive. Should be set higher than read_request_timeout_in_ms in cassandra.yaml. Example: storage_dse_host_read_timeout: 10000

monitored_dse_connection_timeout

The maximum time in seconds that the agent waits while attempting to connect to the DSE cluster. Default: 30. Example: monitored_dse_connection_timeout: 30

monitored_dse_host_read_timeout

The maximum time in milliseconds that the agent waits for a monitored node to return a response from a read request before considering said node unresponsive. Should be set higher than read_request_timeout_in_ms in cassandra.yaml. Example: monitored_dse_host_read_timeout: 10000

cassandra_install_location

The base directory where DataStax Enterprise or Cassandra is installed. When not set, the agent attempts to auto-detect the location but cannot do so in all cases. Example: cassandra_install_location: /usr/share/dse

cassandra_log_location

The directory in which DSE logs reside. This is only used for the diagnostics tarball, and should only be set if these logs are in a location other than the default. Example: cassandra_log_location: /var/log/cassandra

cassandra_binary_location

The location of Cassandra's binaries’ directory (cqlsh, nodetool, and sstableloader). When not set, the agent attempts to auto-detect the location. Example: cassandra_binary_location: /usr/bin

cassandra_conf_location

The location of Cassandra's configuration files’ directory (cassandra.yaml, cassandra-env.sh). When not set, the agent attempts to auto-detect the location. Example: cassandra_conf_location: /etc/dse/cassandra

dse_env_location

The location of directory that holds dse-env.sh. When not set, the agent attempts to auto-detect the location. Example: dse_env_location: /etc/dse

dse_binary_location

The location of directory that holds dsetool. When not set, the agent attempts to auto-detect the location. Example: dse_binary_location: /usr/bin

dse_conf_location

The location of directory that holds dse.yaml. When not set, the agent attempts to auto-detect the location. Example: dse_conf_location: /etc/dse

spark_conf_location

The location of directory that holds spark-env.sh. When not set, the agent attempts to auto-detect the location. Example: spark_conf_location: /etc/dse/spark

spark_log_location

The location of directory that holds spark logs. When not set, the agent attempts to auto-detect the location. Example: spark_log_location: /var/log/spark

solr_log_location

The location of directory that holds solr logs. When not set, the agent attempts to auto-detect the location. Example: solr_log_location: /var/log/cassandra

agent_log_location

The path to the OpsCenter agent.log file and additional log files for the DataStax Agent. Example: agent_log_location: nodes/logs/opsagent

cassandra_rpc_interface

When unspecified, the agent will attempt to determine cassandra rpc_address by reading cassandra.yaml for rpc_address (native_transport_address). When specified, this agent lookup is skipped and the specified value is used instead. Example: cassandra_rpc_interface: 172.10.0.2

api_port

The port used for the http api endpoint. Example: api_port: 61621

runs_sudo

Sets whether the DataStax Agent will be run using sudo or not. Setting this option to false means the agent will not use sudo, and the agent user will not run using elevated privileges. Setting this option to true means the agent will run using sudo, and elevated privileges. Default is true. Example: runs_sudo: true

s3_proxy_host

The optional proxy host the client will connect through. Example: s3_proxy_host: localhost

s3_proxy_port

The optional proxy port the client will connect through. Example: s3_proxy_port: 80

restore_req_update_period

The frequency in seconds with which status updates are sent to opscenterd during Restore operations in the Backup Service. Default: 60. Example: restore_req_update_period: 60

backup_staging_dir

The directory where commitlogs are copied after they are written to disk from DSE. The DataStax Agents monitor this directory and move commitlogs to the configured destinations. After all destinations receive the relevant commit logs, the logs are moved to the backup_storage_dir.The default location is /var/lib/datastax-agent/commitlogs/. Example: backup_staging_dir: /var/lib/datastax-agent/commitlogs/

backup_storage_dir

The directory where On Server commitlog backups are stored after being copied to all configured destinations. The directory will be cleaned based on a configured retention policy for an On Server location. The directory should be large enough to hold commitlogs for the length of the retention policy. The default location is /var/lib/datastax-agent/backups/. Example: backup_storage_dir: /var/lib/datastax-agent/backups/

tmp_dir

The directory used to temporarily stage files when restoring. The default location is /var/lib/datastax-agent/tmp. Example: tmp_dir: /var/lib/datastax-agent/tmp/

remote_backup_retries

The number of attempts to make when file download fails during a restore. Default: 3. Example: remote_backup_retries: 3

remote_backup_timeout

The timeout in milliseconds for the connection used to push backups to remote destinations. Default: 1000. Example: remote_backup_timeout: 1000

use_s3_cli

Enable using the AWS CLI instead of the AWS SDK when bulk loading backups to Amazon S3 locations. Default: false. Example: use_s3_cli: true

remote_verify_initial_delay

Initial delay in milliseconds to wait before checking if a file was successfully uploaded during a backup operation. This configuration option works in conjunction with the remote_verify_max option to distinguish between broken versus tardy backups when cleaning up SSTables. The remote_verify_initial_delay value doubles each time a file transfer validation failure occurs until the value exceeds the remote_verify_max value. Default: 1000 (1 second). Example: remote_verify_initial_delay: 1000

remote_verify_max

The maximum time period to wait after a file upload completed but is still unreadable from the remote destination. When this delay is exceeded, the transfer is considered failed. This configuration option works in conjunction with the remote_verify_initial_delay option to distinguish between broken versus tardy backups when cleaning up SSTables. Default: 30000 (30 seconds). Example: remote_verify_max: 300000

restore_on_transfer_failure

When set to true, a failed file transfer from the remote destination will not halt the restore process. process. A future restore attempt uses any successfully transferred files. Default: false. Example: restore_on_transfer_failure: false

remote_backup_region

The AWS region to use for remote backup transfers. Default: us-west-1. Example: remote_backup_region: us-west-1

max_file_transfer_attempts

The maximum number of attempts to upload a file or create a remote destination. Default: 3. Example: max_file_transfer_attempts: 30

sstableloader_max_heap_size

The maximum heap size used by the sstableloader during restore operations. Default: 256M. Example: sstableloader_max_heap_size: 256M

trace_delay

The time in milliseconds to wait between issuing a query to trace and fetching trace events in the Performance Service Slow Query panel. Default: 300. Example: trace_delay: 300

support_shell_timeout

The number of seconds to wait for a shell process such as nodetool to run before timing out. This setting is only used for generating a diagnostic tarball. Default: 30. Example: support_shell_timeout: 30

graphite_host

Setting graphite_host enables the forwarding of metrics to a graphite server at the given address. Leaving the graphite_host blank disables forwarding metrics to the graphite server. Example: graphite_host: graphite.myhost.com

graphite_port

Port for graphite's plaintext protocol. Example: graphite_port: 2003

graphite_prefix

A prefix to insert metrics under. Example: graphite_prefix: opscenter

slow_query_past

How far into the past in milliseconds to look for slow queries. Default: 3600000 (1,000 hours). Example: slow_query_past: 3600000

slow_query_refresh

Time in seconds between slow query refreshes. Default: 5. Example: slow_query_refresh: 5

slow_query_fetch_size

The limit to how many slow queries are fetched. Default: 500. Example: slow_query_fetch_size: 500

slow_query_ignore

A list of keyspaces that the performance service slow query log will ignore. Default: ["OpsCenter" "dse_perf"] Example: slow_query_ignore: ["OpsCenter" "dse_perf"]

config_encryption_active

Specifies whether opscenter should attempt to decrypt sensitive config values. Default: False

config_encryption_key_name

Filename to use for the encryption key. If a custom name is not specified, opsc_system_key is used by default. Example: config_encryption_key_name: opsc_system_key

config_encryption_key_path

Path where the encryption key should be located. If unspecified, the directory of address.yaml is used by default. Example: config_encryption_key_path: /var/lib/datastax-agent/conf/

running-request-cache-size

Size of running requests cache Example: running-request-cache-size: 500

finished-request-cache-size

Size of finished requests cache Example: finished-request-cache-size: 100

tcp_response_timeout

The tcp response timeout used for JMX specified in milliseconds. This value may need to be set very high in order for some operations to complete on nodes with large amounts of data. 0 for no timeout. Default: 240000 Example: tcp_response_timeout: 120000

pong_timeout_ms

The number of milliseconds to wait for a pong reply from opscenterd over stomp before timing out the ping. Example: pong_timeout_ms: 5000

destination_pretest_timeout

The maximum amount of time in seconds to verify a destination can be written to and read from. Default: 60. Example: destination_pretest_timeout: 60