This is the documentation for Cloudera Manager 5.0.x. Documentation for other versions is available at Cloudera Documentation.

Solr

Role groups:

Gateway Default Group

Monitoring

Display Name Description Related Name Default Value Unit API Name Required
Enable Configuration Change Alerts When set, Cloudera Manager will send alerts when this entity's configuration changes. false enable_config_alerts false

Other

Display Name Description Related Name Default Value Unit API Name Required
Alternatives Priority The priority level that the client configuration will have in the Alternatives system on the hosts. Higher priority levels will cause Alternatives to prefer this configuration over any others. 90 client_config_priority true

Service-Wide

Advanced

Display Name Description Related Name Default Value Unit API Name Required
System Group The group that this service's processes should run as. solr process_groupname true
System User The user that this service's processes should run as. solr process_username true
Solr Service Environment Advanced Configuration Snippet (Safety Valve) For advanced use only, key-value pairs (one on each line) to be inserted into a role's environment. Applies to configurations of all roles in this service except client configuration. solr_env_safety_valve false
Solr Service Advanced Configuration Snippet (Safety Valve) for sentry-site.xml For advanced use only, a string to be inserted into sentry-site.xml. Applies to configurations of all roles in this service except client configuration. solr_sentry_safety_valve false
Solrd Watchdog Timeout If Solr does not respond on its web URL within this time interval, the Catalina process is killed. 30 second(s) solrd_watchdog_timeout false

Monitoring

Display Name Description Related Name Default Value Unit API Name Required
Enable Service Level Health Alerts When set, Cloudera Manager will send alerts when the health of this service reaches the threshold specified by the EventServer setting eventserver_health_events_alert_threshold true enable_alerts false
Enable Configuration Change Alerts When set, Cloudera Manager will send alerts when this entity's configuration changes. false enable_config_alerts false
Service Triggers The configured triggers for this service. 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 service.
  • 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 will cause 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 that fires if there are more than 10 DataNodes with more than 500 file-descriptors opened: 
[{"triggerName": "sample-trigger",
  "triggerExpression": "IF (SELECT fd_open WHERE roleType = DataNode and last(fd_open) > 500) DO health:red",
  "streamThreshold": 10, "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. 		[] service_triggers true
Service Monitor Derived Configs Advanced Configuration Snippet (Safety Valve) For advanced use only, a list of derived configuration properties that will be used by the Service Monitor instead of the default ones. smon_derived_configs_safety_valve false
Healthy Solr Server Monitoring Thresholds The health test thresholds of the overall Solr Server health. The check returns "Concerning" health if the percentage of "Healthy" Solr Servers falls below the warning threshold. The check is unhealthy if the total percentage of "Healthy" and "Concerning" Solr Servers falls below the critical threshold. Warning: 95.0 %, Critical: 90.0 % solr_solr_servers_healthy_thresholds false

Other

Display Name Description Related Name Default Value Unit API Name Required
HDFS Data Directory HDFS directory used for storage by this Search service. /solr hdfs_data_dir true
HDFS Service Name of the HDFS service that this Search service instance depends on hdfs_service true
ZooKeeper Service Name of the ZooKeeper service that this Search service instance depends on zookeeper_service true
ZooKeeper Znode ZooKeeper znode used to store information about this Search service. /solr zookeeper_znode true

Proxy

Display Name Description Related Name Default Value Unit API Name Required
Hue Proxy User Groups Comma-delimited list of groups that you want to allow the Hue user to impersonate. The default '*' allows all groups. To disable entirely, use a string that doesn't correspond to a group name, such as '_no_group_'. solr.security.proxyuser.hue.groups * hue_proxy_user_groups_list false
Hue Proxy User Hosts Comma-delimited list of hosts where you want to allow the Hue user to impersonate other users. The default '*' allows all hosts. To disable entirely, use a string that doesn't correspond to a host name, such as '_no_host'. solr.security.proxyuser.hue.hosts * hue_proxy_user_hosts_list false

Security

Display Name Description Related Name Default Value Unit API Name Required
Solr Secure Authentication Choose the authentication mechanism used by Solr. simple solr_security_authentication false

Sentry

Display Name Description Related Name Default Value Unit API Name Required
Sentry Global Policy File HDFS path to the global policy file for Sentry authorization. This should be a relative path (and not a full HDFS URL). The global policy file must be in Sentry policy file format. sentry.solr.provider.resource /user/solr/sentry/sentry-provider.ini sentry_solr_provider_resource false
Enable Sentry Authorization Use Sentry to enable role-based, fine-grained authorization. Sentry is supported only on Search 1.1 or later deployments and requires authentication to be turned on for Solr. Before enabling Sentry, read the requirements and configuration steps outlined in Configuring Sentry for Search . false solr_sentry_enabled false
Sentry User to Group Mapping Class The class to use in Sentry authorization for user to group mapping. Sentry authorization may be configured to use either Hadoop groups or local groups defined in the policy file. When configured with Hadoop groups, Sentry will ask the HDFS Namenode for group mapping for a given user to determine authorization access. sentry.provider org.apache.sentry.provider.file.HadoopGroupResourceAuthorizationProvider solr_sentry_provider false

Solr Server Default Group

Advanced

Display Name Description Related Name Default Value Unit API Name Required
Solr Server Logging Advanced Configuration Snippet (Safety Valve) For advanced use only, a string to be inserted into log4j.properties for this role only. log4j_safety_valve false
Heap Dump Directory Path to directory where heap dumps are generated when java.lang.OutOfMemoryError error is thrown. This directory is automatically created if it doesn't exist. However, if this directory already exists, role user must have write access to this directory. If this directory is shared amongst multiple roles, it should have 1777 permissions. Note that the heap dump files are created with 600 permissions and are owned by the role user. The amount of free space in this directory should be greater than the maximum Java Process heap size configured for this role. /tmp oom_heap_dump_dir false
Dump Heap When Out of Memory When set, generates heap dump file when java.lang.OutOfMemoryError is thrown. false oom_heap_dump_enabled true
Kill When Out of Memory When set, a SIGKILL signal is sent to the role process when java.lang.OutOfMemoryError is thrown. true oom_sigkill_enabled true
Automatically Restart Process When set, this role's process is automatically (and transparently) restarted in the event of an unexpected failure. false process_auto_restart true
Java Configuration Options for Solr Server These arguments will be passed as part of the Java command line. Commonly, garbage collection flags or extra debugging flags would be passed here. solr_java_opts false

Logs

Display Name Description Related Name Default Value Unit API Name Required
Solr Server Logging Threshold The minimum log level for Solr Server logs INFO log_threshold false
Solr Server Maximum Log File Backups The maximum number of rolled log files to keep for Solr Server logs. Typically used by log4j. 10 max_log_backup_index false
Solr Server Max Log Size The maximum size, in megabytes, per log file for Solr Server logs. Typically used by log4j. 200 MiB max_log_size false

Monitoring

Display Name Description Related Name Default Value Unit API Name Required
Enable Health Alerts for this Role 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 true enable_alerts false
Enable Configuration Change Alerts When set, Cloudera Manager will send alerts when this entity's configuration changes. false enable_config_alerts false
Log Directory Free Space Monitoring Absolute Thresholds The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory. Warning: 10 GiB, Critical: 5 GiB log_directory_free_space_absolute_thresholds false
Log Directory Free Space Monitoring Percentage Thresholds 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. Warning: Never, Critical: Never log_directory_free_space_percentage_thresholds false
Role Triggers 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 will cause 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",
  "triggerExpression": "IF (SELECT fd_open WHERE roleName=$ROLENAME and last(fd_open) > 1500) DO health:red",
  "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. 		[] role_triggers true
Solr Server API Liveness Enables the health test that the Cloudera Manager Agent can successfully contact and gather status of Solr Cores from the Solr Server with a simple API request. true solr_core_status_collection_health_enabled false
Solr Server API Liveness Request Duration The health test thresholds on the duration of the Solr Server API request. Warning: 10 second(s), Critical: Never solr_core_status_collection_thresholds false
File Descriptor Monitoring Thresholds The health test thresholds of the number of file descriptors used. Specified as a percentage of file descriptor limit. Warning: 50.0 %, Critical: 70.0 % solr_server_fd_thresholds false
Garbage Collection Duration Thresholds The health test thresholds for the weighted average time spent in Java garbage collection. Specified as a percentage of elapsed wall clock time. Warning: 30.0, Critical: 60.0 solr_server_gc_duration_thresholds false
Garbage Collection Duration Monitoring Period The period to review when computing the moving average of garbage collection time. 5 minute(s) solr_server_gc_duration_window false
Solr Server Host Health Test When computing the overall Solr Server health, consider the host's health. true solr_server_host_health_enabled false
Solr Server Process Health Test Enables the health test that the Solr Server's process state is consistent with the role configuration true solr_server_scm_health_enabled false
Web Metric Collection Enables the health test that the Cloudera Manager Agent can successfully contact and gather metrics from the web server. true solr_server_web_metric_collection_enabled false
Web Metric Collection Duration The health test thresholds on the duration of the metrics request to the web server. Warning: 10 second(s), Critical: Never solr_server_web_metric_collection_thresholds false
Unexpected Exits Thresholds The health test thresholds for unexpected exits encountered within a recent period specified by the unexpected_exits_window configuration for the role. Warning: Never, Critical: Any unexpected_exits_thresholds false
Unexpected Exits Monitoring Period The period to review when computing unexpected exits. 5 minute(s) unexpected_exits_window false

Other

Display Name Description Related Name Default Value Unit API Name Required
Solr Data Directory Directory on local file system where Solr Server keeps the configurations for collections. /var/lib/solr solr_data_dir true
Solr Server Log Directory Directory where Solr Server will place its log files. /var/log/solr solr_log_dir true

Performance

Display Name Description Related Name Default Value Unit API Name Required
Maximum Process File Descriptors If configured, overrides the process soft and hard rlimits (also called ulimits) for file descriptors to the configured value. rlimit_fds false

Ports and Addresses

Display Name Description Related Name Default Value Unit API Name Required
Solr Admin Port Admin port of the Solr Server. 8984 solr_admin_port true
Solr HTTP Port HTTP port of Solr Server. 8983 solr_http_port true

Resource Management

Display Name Description Related Name Default Value Unit API Name Required
Cgroup CPU Shares Number of CPU shares to assign to this role. The greater the number of shares, the larger the share of the host's CPUs that will be given to this role when the host experiences CPU contention. Must be between 2 and 262144. Defaults to 1024 for processes not managed by Cloudera Manager. cpu.shares 1024 rm_cpu_shares true
Cgroup I/O Weight 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. blkio.weight 500 rm_io_weight true
Cgroup Memory Hard Limit 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. memory.limit_in_bytes -1 MiB rm_memory_hard_limit true
Cgroup Memory Soft Limit 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. memory.soft_limit_in_bytes -1 MiB rm_memory_soft_limit true
HDFS Block Cache Blocks per Slab Number of blocks per cache slab. The size of the cache is 8 KB (the block size) times the number of blocks per slab times the number of slabs. solr.hdfs.blockcache.blocksperbank 16384 solr_hdfs_blockcache_blocksperbank true
HDFS Block Cache Off-Heap Memory Use off-heap memory when caching HDFS blocks in Solr. solr.hdfs.blockcache.direct.memory.allocation true solr_hdfs_blockcache_direct_memory_allocation true
HDFS Block Cache Enable caching of HDFS blocks in Solr. There is one block cache per Solr collection. configured to use off-heap memory, Maximum Off-Heap Memory must be set high enough to account for all block caches. solr.hdfs.blockcache.enable true solr_hdfs_blockcache_enable true
HDFS Block Cache Number of Slabs Number of slabs per block cache. The size of the cache is 8 KB (the block size) times the number of blocks per slab times the number of slabs. solr.hdfs.blockcache.slab.count 1 solr_hdfs_blockcache_slab_count true
Java Direct Memory Size of Solr Server in Bytes Maximum amount of off-heap memory that may be allocated by the Java process. Passed to Java -XX:MaxDirectMemorySize. Measured in bytes. If unset, defaults to the size of the heap. 1 GiB solr_java_direct_memory_size false
Java Heap Size of Solr Server in Bytes Maximum size for the Java Process heap memory. Passed to Java -Xmx. Measured in bytes. 1 GiB solr_java_heapsize false
Page generated September 3, 2015.