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    1 ############################
    2 # GRAYLOG CONFIGURATION FILE
    3 ############################
    4 #
    5 # This is the Graylog configuration file. The file has to use ISO 8859-1/Latin-1 character encoding.
    6 # Characters that cannot be directly represented in this encoding can be written using Unicode escapes
    7 # as defined in https://docs.oracle.com/javase/specs/jls/se8/html/jls-3.html#jls-3.3, using the \u prefix.
    8 # For example, \u002c.
    9 # 
   10 # * Entries are generally expected to be a single line of the form, one of the following:
   11 #
   12 # propertyName=propertyValue
   13 # propertyName:propertyValue
   14 #
   15 # * White space that appears between the property name and property value is ignored,
   16 #   so the following are equivalent:
   17 # 
   18 # name=Stephen
   19 # name = Stephen
   20 #
   21 # * White space at the beginning of the line is also ignored.
   22 #
   23 # * Lines that start with the comment characters ! or # are ignored. Blank lines are also ignored.
   24 #
   25 # * The property value is generally terminated by the end of the line. White space following the
   26 #   property value is not ignored, and is treated as part of the property value.
   27 #
   28 # * A property value can span several lines if each line is terminated by a backslash (‘\’) character.
   29 #   For example:
   30 #
   31 # targetCities=\
   32 #         Detroit,\
   33 #         Chicago,\
   34 #         Los Angeles
   35 #
   36 #   This is equivalent to targetCities=Detroit,Chicago,Los Angeles (white space at the beginning of lines is ignored).
   37 # 
   38 # * The characters newline, carriage return, and tab can be inserted with characters \n, \r, and \t, respectively.
   39 # 
   40 # * The backslash character must be escaped as a double backslash. For example:
   41 # 
   42 # path=c:\\docs\\doc1
   43 #
   44 
   45 # If you are running more than one instances of Graylog server you have to select one of these
   46 # instances as master. The master will perform some periodical tasks that non-masters won't perform.
   47 is_master = true
   48 
   49 # The auto-generated node ID will be stored in this file and read after restarts. It is a good idea
   50 # to use an absolute file path here if you are starting Graylog server from init scripts or similar.
   51 node_id_file = /etc/graylog/server/node-id
   52 
   53 # You MUST set a secret to secure/pepper the stored user passwords here. Use at least 64 characters.
   54 # Generate one by using for example: pwgen -N 1 -s 96
   55 password_secret =
   56 
   57 # The default root user is named 'admin'
   58 #root_username = admin
   59 
   60 # You MUST specify a hash password for the root user (which you only need to initially set up the
   61 # system and in case you lose connectivity to your authentication backend)
   62 # This password cannot be changed using the API or via the web interface. If you need to change it,
   63 # modify it in this file.
   64 # Create one by using for example: echo -n yourpassword | shasum -a 256
   65 # and put the resulting hash value into the following line
   66 root_password_sha2 =
   67 
   68 # The email address of the root user.
   69 # Default is empty
   70 #root_email = ""
   71 
   72 # The time zone setting of the root user. See http://www.joda.org/joda-time/timezones.html for a list of valid time zones.
   73 # Default is UTC
   74 #root_timezone = UTC
   75 
   76 # Set plugin directory here (relative or absolute)
   77 plugin_dir = plugin
   78 
   79 # REST API listen URI. Must be reachable by other Graylog server nodes if you run a cluster.
   80 # When using Graylog Collectors, this URI will be used to receive heartbeat messages and must be accessible for all collectors.
   81 rest_listen_uri = http://127.0.0.1:9000/api/
   82 
   83 # REST API transport address. Defaults to the value of rest_listen_uri. Exception: If rest_listen_uri
   84 # is set to a wildcard IP address (0.0.0.0) the first non-loopback IPv4 system address is used.
   85 # If set, this will be promoted in the cluster discovery APIs, so other nodes may try to connect on
   86 # this address and it is used to generate URLs addressing entities in the REST API. (see rest_listen_uri)
   87 # You will need to define this, if your Graylog server is running behind a HTTP proxy that is rewriting
   88 # the scheme, host name or URI.
   89 # This must not contain a wildcard address (0.0.0.0).
   90 #rest_transport_uri = http://192.168.1.1:9000/api/
   91 
   92 # Enable CORS headers for REST API. This is necessary for JS-clients accessing the server directly.
   93 # If these are disabled, modern browsers will not be able to retrieve resources from the server.
   94 # This is enabled by default. Uncomment the next line to disable it.
   95 #rest_enable_cors = false
   96 
   97 # Enable GZIP support for REST API. This compresses API responses and therefore helps to reduce
   98 # overall round trip times. This is enabled by default. Uncomment the next line to disable it.
   99 #rest_enable_gzip = false
  100 
  101 # Enable HTTPS support for the REST API. This secures the communication with the REST API with
  102 # TLS to prevent request forgery and eavesdropping. This is disabled by default. Uncomment the
  103 # next line to enable it.
  104 #rest_enable_tls = true
  105 
  106 # The X.509 certificate chain file in PEM format to use for securing the REST API.
  107 #rest_tls_cert_file = /path/to/graylog.crt
  108 
  109 # The PKCS#8 private key file in PEM format to use for securing the REST API.
  110 #rest_tls_key_file = /path/to/graylog.key
  111 
  112 # The password to unlock the private key used for securing the REST API.
  113 #rest_tls_key_password = secret
  114 
  115 # The maximum size of the HTTP request headers in bytes.
  116 #rest_max_header_size = 8192
  117 
  118 # The size of the thread pool used exclusively for serving the REST API.
  119 #rest_thread_pool_size = 16
  120 
  121 # Comma separated list of trusted proxies that are allowed to set the client address with X-Forwarded-For
  122 # header. May be subnets, or hosts.
  123 #trusted_proxies = 127.0.0.1/32, 0:0:0:0:0:0:0:1/128
  124 
  125 # Enable the embedded Graylog web interface.
  126 # Default: true
  127 #web_enable = false
  128 
  129 # Web interface listen URI.
  130 # Configuring a path for the URI here effectively prefixes all URIs in the web interface. This is a replacement
  131 # for the application.context configuration parameter in pre-2.0 versions of the Graylog web interface.
  132 #web_listen_uri = http://127.0.0.1:9000/
  133 
  134 # Web interface endpoint URI. This setting can be overriden on a per-request basis with the X-Graylog-Server-URL header.
  135 # Default: $rest_transport_uri
  136 #web_endpoint_uri =
  137 
  138 # Enable CORS headers for the web interface. This is necessary for JS-clients accessing the server directly.
  139 # If these are disabled, modern browsers will not be able to retrieve resources from the server.
  140 #web_enable_cors = false
  141 
  142 # Enable/disable GZIP support for the web interface. This compresses HTTP responses and therefore helps to reduce
  143 # overall round trip times. This is enabled by default. Uncomment the next line to disable it.
  144 #web_enable_gzip = false
  145 
  146 # Enable HTTPS support for the web interface. This secures the communication of the web browser with the web interface
  147 # using TLS to prevent request forgery and eavesdropping.
  148 # This is disabled by default. Uncomment the next line to enable it and see the other related configuration settings.
  149 #web_enable_tls = true
  150 
  151 # The X.509 certificate chain file in PEM format to use for securing the web interface.
  152 #web_tls_cert_file = /path/to/graylog-web.crt
  153 
  154 # The PKCS#8 private key file in PEM format to use for securing the web interface.
  155 #web_tls_key_file = /path/to/graylog-web.key
  156 
  157 # The password to unlock the private key used for securing the web interface.
  158 #web_tls_key_password = secret
  159 
  160 # The maximum size of the HTTP request headers in bytes.
  161 #web_max_header_size = 8192
  162 
  163 # The size of the thread pool used exclusively for serving the web interface.
  164 #web_thread_pool_size = 16
  165 
  166 # List of Elasticsearch hosts Graylog should connect to.
  167 # Need to be specified as a comma-separated list of valid URIs for the http ports of your elasticsearch nodes.
  168 # If one or more of your elasticsearch hosts require authentication, include the credentials in each node URI that
  169 # requires authentication.
  170 #
  171 # Default: http://127.0.0.1:9200
  172 #elasticsearch_hosts = http://node1:9200,http://user:password@node2:19200
  173 
  174 # Maximum amount of time to wait for successfull connection to Elasticsearch HTTP port.
  175 #
  176 # Default: 10 Seconds
  177 #elasticsearch_connect_timeout = 10s
  178 
  179 # Maximum amount of time to wait for reading back a response from an Elasticsearch server.
  180 #
  181 # Default: 60 seconds
  182 #elasticsearch_socket_timeout = 60s
  183 
  184 # Maximum idle time for an Elasticsearch connection. If this is exceeded, this connection will
  185 # be tore down.
  186 #
  187 # Default: inf
  188 #elasticsearch_idle_timeout = -1s
  189 
  190 # Maximum number of total connections to Elasticsearch.
  191 #
  192 # Default: 20
  193 #elasticsearch_max_total_connections = 20
  194 
  195 # Maximum number of total connections per Elasticsearch route (normally this means per
  196 # elasticsearch server).
  197 #
  198 # Default: 2
  199 #elasticsearch_max_total_connections_per_route = 2
  200 
  201 # Maximum number of times Graylog will retry failed requests to Elasticsearch.
  202 #
  203 # Default: 2
  204 #elasticsearch_max_retries = 2
  205 
  206 # Enable automatic Elasticsearch node discovery through Nodes Info,
  207 # see https://www.elastic.co/guide/en/elasticsearch/reference/5.4/cluster-nodes-info.html
  208 #
  209 # WARNING: Automatic node discovery does not work if Elasticsearch requires authentication, e. g. with Shield.
  210 #
  211 # Default: false
  212 #elasticsearch_discovery_enabled = true
  213 
  214 # Filter for including/excluding Elasticsearch nodes in discovery according to their custom attributes,
  215 # see https://www.elastic.co/guide/en/elasticsearch/reference/5.4/cluster.html#cluster-nodes
  216 #
  217 # Default: empty
  218 #elasticsearch_discovery_filter = rack:42
  219 
  220 # Frequency of the Elasticsearch node discovery.
  221 #
  222 # Default: 30s
  223 # elasticsearch_discovery_frequency = 30s
  224 
  225 # Enable payload compression for Elasticsearch requests.
  226 #
  227 # Default: false
  228 #elasticsearch_compression_enabled = true
  229 
  230 # Graylog will use multiple indices to store documents in. You can configured the strategy it uses to determine
  231 # when to rotate the currently active write index.
  232 # It supports multiple rotation strategies:
  233 #   - "count" of messages per index, use elasticsearch_max_docs_per_index below to configure
  234 #   - "size" per index, use elasticsearch_max_size_per_index below to configure
  235 # valid values are "count", "size" and "time", default is "count"
  236 #
  237 # ATTENTION: These settings have been moved to the database in 2.0. When you upgrade, make sure to set these
  238 #            to your previous 1.x settings so they will be migrated to the database!
  239 rotation_strategy = count
  240 
  241 # (Approximate) maximum number of documents in an Elasticsearch index before a new index
  242 # is being created, also see no_retention and elasticsearch_max_number_of_indices.
  243 # Configure this if you used 'rotation_strategy = count' above.
  244 #
  245 # ATTENTION: These settings have been moved to the database in 2.0. When you upgrade, make sure to set these
  246 #            to your previous 1.x settings so they will be migrated to the database!
  247 elasticsearch_max_docs_per_index = 20000000
  248 
  249 # (Approximate) maximum size in bytes per Elasticsearch index on disk before a new index is being created, also see
  250 # no_retention and elasticsearch_max_number_of_indices. Default is 1GB.
  251 # Configure this if you used 'rotation_strategy = size' above.
  252 #
  253 # ATTENTION: These settings have been moved to the database in 2.0. When you upgrade, make sure to set these
  254 #            to your previous 1.x settings so they will be migrated to the database!
  255 #elasticsearch_max_size_per_index = 1073741824
  256 
  257 # (Approximate) maximum time before a new Elasticsearch index is being created, also see
  258 # no_retention and elasticsearch_max_number_of_indices. Default is 1 day.
  259 # Configure this if you used 'rotation_strategy = time' above.
  260 # Please note that this rotation period does not look at the time specified in the received messages, but is
  261 # using the real clock value to decide when to rotate the index!
  262 # Specify the time using a duration and a suffix indicating which unit you want:
  263 #  1w  = 1 week
  264 #  1d  = 1 day
  265 #  12h = 12 hours
  266 # Permitted suffixes are: d for day, h for hour, m for minute, s for second.
  267 #
  268 # ATTENTION: These settings have been moved to the database in 2.0. When you upgrade, make sure to set these
  269 #            to your previous 1.x settings so they will be migrated to the database!
  270 #elasticsearch_max_time_per_index = 1d
  271 
  272 # Disable checking the version of Elasticsearch for being compatible with this Graylog release.
  273 # WARNING: Using Graylog with unsupported and untested versions of Elasticsearch may lead to data loss!
  274 #elasticsearch_disable_version_check = true
  275 
  276 # Disable message retention on this node, i. e. disable Elasticsearch index rotation.
  277 #no_retention = false
  278 
  279 # How many indices do you want to keep?
  280 #
  281 # ATTENTION: These settings have been moved to the database in 2.0. When you upgrade, make sure to set these
  282 #            to your previous 1.x settings so they will be migrated to the database!
  283 elasticsearch_max_number_of_indices = 20
  284 
  285 # Decide what happens with the oldest indices when the maximum number of indices is reached.
  286 # The following strategies are availble:
  287 #   - delete # Deletes the index completely (Default)
  288 #   - close # Closes the index and hides it from the system. Can be re-opened later.
  289 #
  290 # ATTENTION: These settings have been moved to the database in 2.0. When you upgrade, make sure to set these
  291 #            to your previous 1.x settings so they will be migrated to the database!
  292 retention_strategy = delete
  293 
  294 # How many Elasticsearch shards and replicas should be used per index? Note that this only applies to newly created indices.
  295 # ATTENTION: These settings have been moved to the database in Graylog 2.2.0. When you upgrade, make sure to set these
  296 #            to your previous settings so they will be migrated to the database!
  297 elasticsearch_shards = 4
  298 elasticsearch_replicas = 0
  299 
  300 # Prefix for all Elasticsearch indices and index aliases managed by Graylog.
  301 #
  302 # ATTENTION: These settings have been moved to the database in Graylog 2.2.0. When you upgrade, make sure to set these
  303 #            to your previous settings so they will be migrated to the database!
  304 elasticsearch_index_prefix = graylog
  305 
  306 # Name of the Elasticsearch index template used by Graylog to apply the mandatory index mapping.
  307 # Default: graylog-internal
  308 #
  309 # ATTENTION: These settings have been moved to the database in Graylog 2.2.0. When you upgrade, make sure to set these
  310 #            to your previous settings so they will be migrated to the database!
  311 #elasticsearch_template_name = graylog-internal
  312 
  313 # Do you want to allow searches with leading wildcards? This can be extremely resource hungry and should only
  314 # be enabled with care. See also: http://docs.graylog.org/en/2.1/pages/queries.html
  315 allow_leading_wildcard_searches = false
  316 
  317 # Do you want to allow searches to be highlighted? Depending on the size of your messages this can be memory hungry and
  318 # should only be enabled after making sure your Elasticsearch cluster has enough memory.
  319 allow_highlighting = false
  320 
  321 # Analyzer (tokenizer) to use for message and full_message field. The "standard" filter usually is a good idea.
  322 # All supported analyzers are: standard, simple, whitespace, stop, keyword, pattern, language, snowball, custom
  323 # Elasticsearch documentation: https://www.elastic.co/guide/en/elasticsearch/reference/2.3/analysis.html
  324 # Note that this setting only takes effect on newly created indices.
  325 #
  326 # ATTENTION: These settings have been moved to the database in Graylog 2.2.0. When you upgrade, make sure to set these
  327 #            to your previous settings so they will be migrated to the database!
  328 elasticsearch_analyzer = standard
  329 
  330 # Global request timeout for Elasticsearch requests (e. g. during search, index creation, or index time-range
  331 # calculations) based on a best-effort to restrict the runtime of Elasticsearch operations.
  332 # Default: 1m
  333 #elasticsearch_request_timeout = 1m
  334 
  335 # Global timeout for index optimization (force merge) requests.
  336 # Default: 1h
  337 #elasticsearch_index_optimization_timeout = 1h
  338 
  339 # Maximum number of concurrently running index optimization (force merge) jobs.
  340 # If you are using lots of different index sets, you might want to increase that number.
  341 # Default: 20
  342 #elasticsearch_index_optimization_jobs = 20
  343 
  344 # Time interval for index range information cleanups. This setting defines how often stale index range information
  345 # is being purged from the database.
  346 # Default: 1h
  347 #index_ranges_cleanup_interval = 1h
  348 
  349 # Batch size for the Elasticsearch output. This is the maximum (!) number of messages the Elasticsearch output
  350 # module will get at once and write to Elasticsearch in a batch call. If the configured batch size has not been
  351 # reached within output_flush_interval seconds, everything that is available will be flushed at once. Remember
  352 # that every outputbuffer processor manages its own batch and performs its own batch write calls.
  353 # ("outputbuffer_processors" variable)
  354 output_batch_size = 500
  355 
  356 # Flush interval (in seconds) for the Elasticsearch output. This is the maximum amount of time between two
  357 # batches of messages written to Elasticsearch. It is only effective at all if your minimum number of messages
  358 # for this time period is less than output_batch_size * outputbuffer_processors.
  359 output_flush_interval = 1
  360 
  361 # As stream outputs are loaded only on demand, an output which is failing to initialize will be tried over and
  362 # over again. To prevent this, the following configuration options define after how many faults an output will
  363 # not be tried again for an also configurable amount of seconds.
  364 output_fault_count_threshold = 5
  365 output_fault_penalty_seconds = 30
  366 
  367 # The number of parallel running processors.
  368 # Raise this number if your buffers are filling up.
  369 processbuffer_processors = 5
  370 outputbuffer_processors = 3
  371 
  372 # The following settings (outputbuffer_processor_*) configure the thread pools backing each output buffer processor.
  373 # See https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ThreadPoolExecutor.html for technical details
  374 
  375 # When the number of threads is greater than the core (see outputbuffer_processor_threads_core_pool_size),
  376 # this is the maximum time in milliseconds that excess idle threads will wait for new tasks before terminating.
  377 # Default: 5000
  378 #outputbuffer_processor_keep_alive_time = 5000
  379 
  380 # The number of threads to keep in the pool, even if they are idle, unless allowCoreThreadTimeOut is set
  381 # Default: 3
  382 #outputbuffer_processor_threads_core_pool_size = 3
  383 
  384 # The maximum number of threads to allow in the pool
  385 # Default: 30
  386 #outputbuffer_processor_threads_max_pool_size = 30
  387 
  388 # UDP receive buffer size for all message inputs (e. g. SyslogUDPInput).
  389 #udp_recvbuffer_sizes = 1048576
  390 
  391 # Wait strategy describing how buffer processors wait on a cursor sequence. (default: sleeping)
  392 # Possible types:
  393 #  - yielding
  394 #     Compromise between performance and CPU usage.
  395 #  - sleeping
  396 #     Compromise between performance and CPU usage. Latency spikes can occur after quiet periods.
  397 #  - blocking
  398 #     High throughput, low latency, higher CPU usage.
  399 #  - busy_spinning
  400 #     Avoids syscalls which could introduce latency jitter. Best when threads can be bound to specific CPU cores.
  401 processor_wait_strategy = blocking
  402 
  403 # Size of internal ring buffers. Raise this if raising outputbuffer_processors does not help anymore.
  404 # For optimum performance your LogMessage objects in the ring buffer should fit in your CPU L3 cache.
  405 # Must be a power of 2. (512, 1024, 2048, ...)
  406 ring_size = 65536
  407 
  408 inputbuffer_ring_size = 65536
  409 inputbuffer_processors = 2
  410 inputbuffer_wait_strategy = blocking
  411 
  412 # Enable the disk based message journal.
  413 message_journal_enabled = true
  414 
  415 # The directory which will be used to store the message journal. The directory must me exclusively used by Graylog and
  416 # must not contain any other files than the ones created by Graylog itself.
  417 #
  418 # ATTENTION:
  419 #   If you create a seperate partition for the journal files and use a file system creating directories like 'lost+found'
  420 #   in the root directory, you need to create a sub directory for your journal.
  421 #   Otherwise Graylog will log an error message that the journal is corrupt and Graylog will not start.
  422 message_journal_dir = data/journal
  423 
  424 # Journal hold messages before they could be written to Elasticsearch.
  425 # For a maximum of 12 hours or 5 GB whichever happens first.
  426 # During normal operation the journal will be smaller.
  427 #message_journal_max_age = 12h
  428 #message_journal_max_size = 5gb
  429 
  430 #message_journal_flush_age = 1m
  431 #message_journal_flush_interval = 1000000
  432 #message_journal_segment_age = 1h
  433 #message_journal_segment_size = 100mb
  434 
  435 # Number of threads used exclusively for dispatching internal events. Default is 2.
  436 #async_eventbus_processors = 2
  437 
  438 # How many seconds to wait between marking node as DEAD for possible load balancers and starting the actual
  439 # shutdown process. Set to 0 if you have no status checking load balancers in front.
  440 lb_recognition_period_seconds = 3
  441 
  442 # Journal usage percentage that triggers requesting throttling for this server node from load balancers. The feature is
  443 # disabled if not set.
  444 #lb_throttle_threshold_percentage = 95
  445 
  446 # Every message is matched against the configured streams and it can happen that a stream contains rules which
  447 # take an unusual amount of time to run, for example if its using regular expressions that perform excessive backtracking.
  448 # This will impact the processing of the entire server. To keep such misbehaving stream rules from impacting other
  449 # streams, Graylog limits the execution time for each stream.
  450 # The default values are noted below, the timeout is in milliseconds.
  451 # If the stream matching for one stream took longer than the timeout value, and this happened more than "max_faults" times
  452 # that stream is disabled and a notification is shown in the web interface.
  453 #stream_processing_timeout = 2000
  454 #stream_processing_max_faults = 3
  455 
  456 # Length of the interval in seconds in which the alert conditions for all streams should be checked
  457 # and alarms are being sent.
  458 #alert_check_interval = 60
  459 
  460 # Since 0.21 the Graylog server supports pluggable output modules. This means a single message can be written to multiple
  461 # outputs. The next setting defines the timeout for a single output module, including the default output module where all
  462 # messages end up.
  463 #
  464 # Time in milliseconds to wait for all message outputs to finish writing a single message.
  465 #output_module_timeout = 10000
  466 
  467 # Time in milliseconds after which a detected stale master node is being rechecked on startup.
  468 #stale_master_timeout = 2000
  469 
  470 # Time in milliseconds which Graylog is waiting for all threads to stop on shutdown.
  471 #shutdown_timeout = 30000
  472 
  473 # MongoDB connection string
  474 # See https://docs.mongodb.com/manual/reference/connection-string/ for details
  475 mongodb_uri = mongodb://localhost/graylog
  476 
  477 # Authenticate against the MongoDB server
  478 #mongodb_uri = mongodb://grayloguser:secret@localhost:27017/graylog
  479 
  480 # Use a replica set instead of a single host
  481 #mongodb_uri = mongodb://grayloguser:secret@localhost:27017,localhost:27018,localhost:27019/graylog
  482 
  483 # Increase this value according to the maximum connections your MongoDB server can handle from a single client
  484 # if you encounter MongoDB connection problems.
  485 mongodb_max_connections = 1000
  486 
  487 # Number of threads allowed to be blocked by MongoDB connections multiplier. Default: 5
  488 # If mongodb_max_connections is 100, and mongodb_threads_allowed_to_block_multiplier is 5,
  489 # then 500 threads can block. More than that and an exception will be thrown.
  490 # http://api.mongodb.com/java/current/com/mongodb/MongoOptions.html#threadsAllowedToBlockForConnectionMultiplier
  491 mongodb_threads_allowed_to_block_multiplier = 5
  492 
  493 # Drools Rule File (Use to rewrite incoming log messages)
  494 # See: http://docs.graylog.org/en/2.1/pages/drools.html
  495 #rules_file = /etc/graylog/server/rules.drl
  496 
  497 # Email transport
  498 #transport_email_enabled = false
  499 #transport_email_hostname = mail.example.com
  500 #transport_email_port = 587
  501 #transport_email_use_auth = true
  502 #transport_email_use_tls = true
  503 #transport_email_use_ssl = true
  504 #transport_email_auth_username = you@example.com
  505 #transport_email_auth_password = secret
  506 #transport_email_subject_prefix = [graylog]
  507 #transport_email_from_email = graylog@example.com
  508 
  509 # Specify and uncomment this if you want to include links to the stream in your stream alert mails.
  510 # This should define the fully qualified base url to your web interface exactly the same way as it is accessed by your users.
  511 #transport_email_web_interface_url = https://graylog.example.com
  512 
  513 # The default connect timeout for outgoing HTTP connections.
  514 # Values must be a positive duration (and between 1 and 2147483647 when converted to milliseconds).
  515 # Default: 5s
  516 #http_connect_timeout = 5s
  517 
  518 # The default read timeout for outgoing HTTP connections.
  519 # Values must be a positive duration (and between 1 and 2147483647 when converted to milliseconds).
  520 # Default: 10s
  521 #http_read_timeout = 10s
  522 
  523 # The default write timeout for outgoing HTTP connections.
  524 # Values must be a positive duration (and between 1 and 2147483647 when converted to milliseconds).
  525 # Default: 10s
  526 #http_write_timeout = 10s
  527 
  528 # HTTP proxy for outgoing HTTP connections
  529 # ATTENTION: If you configure a proxy, make sure to also configure the "http_non_proxy_hosts" option so internal
  530 #            HTTP connections with other nodes does not go through the proxy.
  531 # Examples:
  532 #   - http://proxy.example.com:8123
  533 #   - http://username:password@proxy.example.com:8123
  534 #http_proxy_uri =
  535 
  536 # A list of hosts that should be reached directly, bypassing the configured proxy server.
  537 # This is a list of patterns separated by ",". The patterns may start or end with a "*" for wildcards.
  538 # Any host matching one of these patterns will be reached through a direct connection instead of through a proxy.
  539 # Examples:
  540 #   - localhost,127.0.0.1
  541 #   - 10.0.*,*.example.com
  542 #http_non_proxy_hosts =
  543 
  544 # Disable the optimization of Elasticsearch indices after index cycling. This may take some load from Elasticsearch
  545 # on heavily used systems with large indices, but it will decrease search performance. The default is to optimize
  546 # cycled indices.
  547 #
  548 # ATTENTION: These settings have been moved to the database in Graylog 2.2.0. When you upgrade, make sure to set these
  549 #            to your previous settings so they will be migrated to the database!
  550 #disable_index_optimization = true
  551 
  552 # Optimize the index down to <= index_optimization_max_num_segments. A higher number may take some load from Elasticsearch
  553 # on heavily used systems with large indices, but it will decrease search performance. The default is 1.
  554 #
  555 # ATTENTION: These settings have been moved to the database in Graylog 2.2.0. When you upgrade, make sure to set these
  556 #            to your previous settings so they will be migrated to the database!
  557 #index_optimization_max_num_segments = 1
  558 
  559 # The threshold of the garbage collection runs. If GC runs take longer than this threshold, a system notification
  560 # will be generated to warn the administrator about possible problems with the system. Default is 1 second.
  561 #gc_warning_threshold = 1s
  562 
  563 # Connection timeout for a configured LDAP server (e. g. ActiveDirectory) in milliseconds.
  564 #ldap_connection_timeout = 2000
  565 
  566 # Disable the use of SIGAR for collecting system stats
  567 #disable_sigar = false
  568 
  569 # The default cache time for dashboard widgets. (Default: 10 seconds, minimum: 1 second)
  570 #dashboard_widget_default_cache_time = 10s
  571 
  572 # Automatically load content packs in "content_packs_dir" on the first start of Graylog.
  573 #content_packs_loader_enabled = true
  574 
  575 # The directory which contains content packs which should be loaded on the first start of Graylog.
  576 #content_packs_dir = data/contentpacks
  577 
  578 # A comma-separated list of content packs (files in "content_packs_dir") which should be applied on
  579 # the first start of Graylog.
  580 # Default: empty
  581 content_packs_auto_load = grok-patterns.json
  582 
  583 # For some cluster-related REST requests, the node must query all other nodes in the cluster. This is the maximum number
  584 # of threads available for this. Increase it, if '/cluster/*' requests take long to complete.
  585 # Should be rest_thread_pool_size * average_cluster_size if you have a high number of concurrent users.
  586 proxied_requests_thread_pool_size = 32