[ { "desc": "The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory. Specified as a percentage of the capacity on that filesystem. This setting is not used if a Log Directory Free Space Monitoring Absolute Thresholds setting is configured.", "display_name": "Log Directory Free Space Monitoring Percentage Thresholds", "name": "log_directory_free_space_percentage_thresholds", "value": "{\"critical\":\"never\",\"warning\":\"never\"}" }, { "desc": "
This file contains the rules which govern how log messages are turned into events by the custom log4j appender that this role loads. It is in JSON format, and is composed of a list of rules. Every log message is evaluated against each of these rules in turn to decide whether or not to send an event for that message.
Each rule has some or all of the following fields:
Example:{\"alert\": false, \"rate\": 10, \"exceptiontype\": \"java.lang.StringIndexOutOfBoundsException\"}
This rule will send events to Cloudera Manager for every StringIndexOutOfBoundsException, up to a maximum of 10 every minute.
", "display_name": "Rules to Extract Events from Log Files", "name": "log_event_whitelist", "value": "{\n \"version\": \"0\",\n \"rules\": [\n {\"alert\": false, \"rate\": 1, \"periodminutes\": 1, \"threshold\":\"FATAL\"},\n {\"alert\": false, \"rate\": 0, \"threshold\":\"WARN\", \"content\": \".* is deprecated. Instead, use .*\"},\n {\"alert\": false, \"rate\": 0, \"threshold\":\"WARN\", \"content\": \".* is deprecated. Use .* instead\"},\n {\"alert\": false, \"rate\": 1, \"periodminutes\": 2, \"exceptiontype\": \".*\"},\n {\"alert\": false, \"rate\": 1, \"periodminutes\": 1, \"threshold\":\"WARN\"}\n ]\n}\n" }, { "desc": "The port to monitor for inter-server communication", "display_name": "Quorum Port", "name": "quorumPort", "value": "3181" }, { "desc": "Whether or not periodic stacks collection is enabled.", "display_name": "Stacks Collection Enabled", "name": "stacks_collection_enabled", "value": "false" }, { "desc": "The port to monitor for leadership election", "display_name": "Election Port", "name": "electionPort", "value": "4181" }, { "desc": "Specifies the name of the user that has read-only privileges when using password file based authentication for JMX access. JMX authentication must be enabled for this setting to take effect.", "display_name": "Name of User with Read-Only access to the JMX Agent", "name": "jmx_passwd_file_readonly_user", "value": "monitorRole" }, { "desc": "The health check thresholds of the weighted average size of the ZooKeeper Server connection count over a recent period. See ZooKeeper Server Connection Count Monitoring Period.", "display_name": "ZooKeeper Server Connection Count Thresholds", "name": "zookeeper_server_connection_count_thresholds", "value": "{\"critical\":\"never\",\"warning\":\"never\"}" }, { "desc": "Weight for the read I/O requests issued by this role. The greater the weight, the higher the priority of the requests when the host experiences I/O contention. Must be between 100 and 1000. Defaults to 1000 for processes not managed by Cloudera Manager.", "display_name": "Cgroup I/O Weight", "name": "rm_io_weight", "value": "500" }, { "desc": "The disk location that ZooKeeper will use to store its transaction logs.", "display_name": "Transaction Log Directory", "name": "dataLogDir", "value": "/var/lib/zookeeper" }, { "desc": "The port used by the ZooKeeper Server's RMI registry. This is required to enable JMX access through RMI which is required for Cloudera Manager ZooKeeper monitoring. This is added as \"-Dcom.sun.management.jmxremote.port\" to the ZooKeeper Server's JVM command line.", "display_name": "JMX Remote Port", "name": "server_jmx_agent_port", "value": "9010" }, { "desc": "The health test thresholds for the weighted average time spent in Java garbage collection. Specified as a percentage of elapsed wall clock time.", "display_name": "Garbage Collection Duration Thresholds", "name": "zookeeper_server_gc_duration_thresholds", "value": "{\"critical\":\"60.0\",\"warning\":\"30.0\"}" }, { "desc": "The tolerance window that will be used in the detection of a ZooKeeper server's membership in a quorum. Specified in minutes.", "display_name": "Quorum Membership Detection Window", "name": "zookeeper_server_quorum_membership_detection_window", "value": "3" }, { "desc": "Enables the health test that the Server's process state is consistent with the role configuration", "display_name": "Server Process Health Test", "name": "zookeeper_server_scm_health_enabled", "value": "true" }, { "desc": "The address (IPv4, IPv6, or hostname) to monitor for client connections. This is the address that clients attempt to connect to. This setting is optional, because by default, ZooKeeper binds in such a way that any connection to the client port for any address/interface/NIC on the server will be accepted.", "display_name": "Client Port Address", "name": "clientPortAddress", "value": null }, { "desc": "When computing the overall Server health, consider the host's health.", "display_name": "Server Host Health Test", "name": "zookeeper_server_host_health_enabled", "value": "true" }, { "desc": "The method that will be used to collect stacks. The jstack option involves periodically running the jstack command against the role's daemon process. The servlet method is available for those roles that have an HTTP server endpoint exposing the current stacks traces of all threads. When the servlet method is selected that HTTP endpoint is periodically scraped.", "display_name": "Stacks Collection Method", "name": "stacks_collection_method", "value": "jstack" }, { "desc": "Specifies the password of the user that has read-only privileges when using password file based authentication for JMX access. JMX authentication must be enabled for this setting to take effect.", "display_name": "Password of User with Read-Only Access to the JMX agent", "name": "jmx_passwd_file_readonly_user_password", "value": "MONITOR" }, { "desc": "The health check thresholds of the weighted average size of the ZooKeeper Server outstanding requests queue over a recent period. See ZooKeeper Server Outstanding Requests Monitoring Period.", "display_name": "ZooKeeper Server Outstanding Requests Thresholds", "name": "zookeeper_server_outstanding_requests_thresholds", "value": "{\"critical\":\"never\",\"warning\":\"never\"}" }, { "desc": "The period to review when computing the moving average of the outstanding requests queue size. Specified in minutes.", "display_name": "ZooKeeper Server Outstanding Requests Monitoring Period", "name": "zookeeper_server_outstanding_requests_window", "value": "3" }, { "desc": "Maximum size in bytes for the Java Process heap memory. Passed to Java -Xmx.", "display_name": "Java Heap Size of ZooKeeper Server in Bytes", "name": "zookeeper_server_java_heapsize", "value": "1073741824" }, { "desc": "When set, this role's process is automatically (and transparently) restarted in the event of an unexpected failure.", "display_name": "Automatically Restart Process", "name": "process_auto_restart", "value": "true" }, { "desc": "The configured triggers for this role. This is a JSON formatted list of triggers. These triggers are evaluated as part as the health system. Every trigger expression is parsed, and if the trigger condition is met, the list of actions provided in the trigger expression is executed.
Each trigger has all of the following fields:
triggerName
(mandatory) - the name of the trigger. This value must be unique for the specific role. triggerExpression
(mandatory) - a tsquery expression representing the trigger. streamThreshold
(optional) - the maximum number of streams that can satisfy a condition of a trigger before the condition fires. By default set to 0, and any stream returned causes the condition to fire. enabled
(optional) - by default set to 'true'. If set to 'false' the trigger will not be evaluated.For example, here is a JSON formatted trigger configured for a DataNode that fires if the DataNode has more than 1500 file-descriptors opened:
[{\"triggerName\": \"sample-trigger\",\n \"triggerExpression\": \"IF (SELECT fd_open WHERE roleName=$ROLENAME and last(fd_open) > 1500) DO health:bad\",\n \"streamThreshold\": 0, \"enabled\": \"true\"}]
Consult the trigger rules documentation for more details on how to write triggers using tsquery.
The JSON format is evolving and may change in the future and as a result backward compatibility is not guaranteed between releases at this time.
", "display_name": "Role Triggers", "name": "role_triggers", "value": "[]" }, { "desc": "The minimum session timeout, in milliseconds, that the ZooKeeper Server will allow the client to negotiate", "display_name": "Minimum Session Timeout", "name": "minSessionTimeout", "value": "4000" }, { "desc": "Specifies the name of the user that has read-write privileges when using password file based authentication for JMX access. JMX authentication must be enabled for this setting to take effect.", "display_name": "Name of User with Read-Write Access to the JMX Agent", "name": "jmx_passwd_file_readwrite_user", "value": "controlRole" }, { "desc": "Soft memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process if and only if the host is facing memory pressure. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit.", "display_name": "Cgroup Memory Soft Limit", "name": "rm_memory_soft_limit", "value": "-1" }, { "desc": "When set, generates heap dump file when java.lang.OutOfMemoryError is thrown.", "display_name": "Dump Heap When Out of Memory", "name": "oom_heap_dump_enabled", "value": "false" }, { "desc": "The health check thresholds for monitoring of free space on the filesystem that contains the ZooKeeper server's data directory. Specified as a percentage of the capacity on that filesystem. This setting is not used if a Data Directory Free Space Monitoring Absolute Thresholds setting is configured.", "display_name": "Data Directory Free Space Monitoring Percentage Thresholds", "name": "zookeeper_server_data_directory_free_space_percentage_thresholds", "value": "{\"critical\":\"never\",\"warning\":\"never\"}" }, { "desc": "Hard memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit.", "display_name": "Cgroup Memory Hard Limit", "name": "rm_memory_hard_limit", "value": "-1" }, { "desc": "The disk location that ZooKeeper will use to store its database snapshots.", "display_name": "Data Directory", "name": "dataDir", "value": "/var/lib/zookeeper" }, { "desc": "The period to review when computing unexpected exits.", "display_name": "Unexpected Exits Monitoring Period", "name": "unexpected_exits_window", "value": "5" }, { "desc": "The health check thresholds for monitoring of free space on the filesystem that contains the ZooKeeper Server's data directory.", "display_name": "Data Directory Free Space Monitoring Absolute Thresholds", "name": "zookeeper_server_data_directory_free_space_absolute_thresholds", "value": "{\"critical\":\"5.36870912E9\",\"warning\":\"1.073741824E10\"}" }, { "desc": "The amount of stacks data that will be retained. After the retention limit is reached, the oldest data will be deleted.", "display_name": "Stacks Collection Data Retention", "name": "stacks_collection_data_retention", "value": "104857600" }, { "desc": "Enables authentication when interacting with the JMX agent on the ZooKeeper server.", "display_name": "Enable Authenticated Communication with the JMX Agent", "name": "enable_jmx_authentication", "value": "false" }, { "desc": "The period to review when computing the moving average of the connection count. Specified in minutes.", "display_name": "ZooKeeper Server Connection Count Monitoring Period", "name": "zookeeper_server_connection_count_window", "value": "3" }, { "desc": "For advanced use only, a string to be inserted into log4j.properties for this role only.", "display_name": "Server Logging Advanced Configuration Snippet (Safety Valve)", "name": "log4j_safety_valve", "value": null }, { "desc": "The maximum session timeout, in milliseconds, that the ZooKeeper Server will allow the client to negotiate", "display_name": "Maximum Session Timeout", "name": "maxSessionTimeout", "value": "40000" }, { "desc": "For advanced use only, a string to be inserted into zoo.cfg for this role only.", "display_name": "Server Advanced Configuration Snippet (Safety Valve) for zoo.cfg", "name": "zookeeper_config_safety_valve", "value": null }, { "desc": "The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory.", "display_name": "Log Directory Free Space Monitoring Absolute Thresholds", "name": "log_directory_free_space_absolute_thresholds", "value": "{\"critical\":\"5.36870912E9\",\"warning\":\"1.073741824E10\"}" }, { "desc": "The maximum number of concurrent connections (at the socket level) that a single client, identified by the IP address, may make to a single member of the ZooKeeper ensemble. This setting is used to prevent certain classes of DoS attacks, including file descriptor exhaustion. To remove the limit on concurrent connections, set this value to 0.", "display_name": "Maximum Client Connections", "name": "maxClientCnxns", "value": "60" }, { "desc": "If configured, overrides the process soft and hard rlimits (also called ulimits) for file descriptors to the configured value.", "display_name": "Maximum Process File Descriptors", "name": "rlimit_fds", "value": null }, { "desc": "These arguments will be passed as part of the Java command line. Commonly, garbage collection flags or extra debugging flags would be passed here.", "display_name": "Java Configuration Options for Zookeeper Server", "name": "zk_server_java_opts", "value": "" }, { "desc": "When set, Cloudera Manager will send alerts when the health of this role reaches the threshold specified by the EventServer setting eventserver_health_events_alert_threshold", "display_name": "Enable Health Alerts for this Role", "name": "enable_alerts", "value": "true" }, { "desc": "The port used by the ZooKeeper Server's RMI server to handle JMX RMI requests. This is added as \"-Dcom.sun.management.jmxremote.rmi.port=