Logdatenanalyse mit graylog unter CentOS 7.x

Damit der Daemon beim Hochfahren unseres Servers automatisch gestartet wird, nutzen wir folgenden Befehl.

 # systemctl enable elasticsearch.service

Created symlink from /etc/systemd/system/multi-user.target.wants/elasticsearch.service to /usr/lib/systemd/system/elasticsearch.service.

Wollen wir wissen, ob die Autostartfunktion bereits gesetzt ist, verwenden wir diesen Aufruf.

 # systemctl is-enabled elasticsearch.service

enabled

Zum Testen unserer Konfigurationseinstellungen nutzen wir die Nodes Info API.

 # curl localhost:9200/_nodes/process?pretty

{
  "cluster_name" : "graylog",
  "nodes" : {
    "EdAnadZuTiOjxFR7_Kvdrg" : {
      "name" : "vml000117",
      "transport_address" : "inet[/10.0.0.117:9300]",
      "host" : "vml000117.dmz.nausch.org",
      "ip" : "10.0.0.117",
      "version" : "1.7.4",
      "build" : "0d3159b",
      "http_address" : "inet[/10.0.0.117:9200]",
      "process" : {
        "refresh_interval_in_millis" : 1000,
        "id" : 32221,
        "max_file_descriptors" : 65535,
        "mlockall" : true
      }
    }
  }
}

Den Zustand des elastic-Servers kann man sich mit folgendem Aufruf anzeigen lassen.

 # curl localhost:9200/_cluster/health?pretty

{
  "cluster_name" : "graylog",
  "status" : "green",
  "timed_out" : false,
  "number_of_nodes" : 1,
  "number_of_data_nodes" : 1,
  "active_primary_shards" : 2,
  "active_shards" : 2,
  "relocating_shards" : 0,
  "initializing_shards" : 0,
  "unassigned_shards" : 0,
  "delayed_unassigned_shards" : 0,
  "number_of_pending_tasks" : 0,
  "number_of_in_flight_fetch" : 0
}

Nachdem wir alle Vorbereitungen erfolgreich abgeschlossen haben, können wir uns nun der Konfiguration des graylog-server Daemons widmen.

Auf unserem System unter CentOS 7.x hatten wir als JAVA Runtime Enviroment das Paket openjdk in der Version 1.8 installiert. Ab Version 1.8 werden die beiden Parameter PermSize und MaxPermSize nicht mehr unterstützt. Wir werden daher in der Konfigurationsdatei /etc/sysconfig/graylog-server diese beiden Parameter bei den GRAYLOG_SERVERGRAYLOG_SERVER_JAVA_OPTS entfernen.

 # vim /etc/sysconfig/graylog-server

/etc/sysconfig/graylog-server

# Path to the java executable.
JAVA=/usr/bin/java
 
# Default Java options for heap and garbage collection.
#
# Django : 2015-12-28 - PermSize und MaxPermSize werden ab openjdk-1.8.0 nicht mehr unterstützt
# default: GRAYLOG_SERVER_JAVA_OPTS="-Xms1g -Xmx1g -XX:NewRatio=1 -XX:PermSize=128m -XX:MaxPermSize=256m -server -XX:+ResizeTLAB -XX:+UseConcMarkSweepGC -XX:+CMSConcurrentMTEnabled -XX:+CMSClassUnloadingEnabled -XX:+UseParNewGC -XX:-OmitStackTraceInFastThrow"
GRAYLOG_SERVER_JAVA_OPTS="-Xms1g -Xmx1g -XX:NewRatio=1 -server -XX:+ResizeTLAB -XX:+UseConcMarkSweepGC -XX:+CMSConcurrentMTEnabled -XX:+CMSClassUnloadingEnabled -XX:+UseParNewGC -XX:-OmitStackTraceInFastThrow"
 
# Pass some extra args to graylog-server. (i.e. "-d" to enable debug mode)
GRAYLOG_SERVER_ARGS=""
 
# Program that will be used to wrap the graylog-server command. Useful to
# support programs like authbind.
GRAYLOG_COMMAND_WRAPPER=""

Die eigentliche Konfiguration unseres graylog-Servers wird in dessen Konfigurationsdatei /etc/graylog/server/server.conf vorgenommen.

Bevor wir diese öffnen und bearbeiten, erstellen wir uns noch zwei Dinge:

1. Passwort-Hash
   Mit Hilfe des Passwort-Hash werden die Nutzerpassworte verschlüsselt. Diesen hash-Wert erstellen wir wie folgt:

    # pwgen -N 1 -s 128

   yCWAd48fvOmR7xAmcKezZ2C0v3mtaXCJjA7NfhBlSf98PTxHrf9SrCQDX2xgjCzrHpxoV5UNOEfQZsOP1gkWkYlDarD75tbtztPhR59O70yZchaJcyQTeHBZllQc8RcT

2. Admin-Passwort
   Der administrative Benutzer admin benötigt noch ein zugehöriges Passwort, erzeugen wir nun mit folgendem Befehl.

   # echo -n N3v3r7ru57Y0URg0v3rnm3n7 | sha256sum

   38337fd07fd4ee02548053d7bed3ee33e3e0c593c2802941e2349fc52e80b98d  -

Diese beiden Werte hinterlegen wir nun in der Konfigurationsdatei unseres graylog-Daemon und passen anschließend die Konfigurationsoptionen unserer Umgebung an. Änderungen an den Default-Werten sind mit Django : <Zeitstempel> gekennzeichnet

 # vim /etc/graylog/server/server.conf

/etc/graylog/server/server.conf

# If you are running more than one instances of graylog2-server you have to select one of these
# instances as master. The master will perform some periodical tasks that non-masters won't perform.
is_master = true                                                                                    
 
# The auto-generated node ID will be stored in this file and read after restarts. It is a good idea
# to use an absolute file path here if you are starting graylog2-server from init scripts or similar.
node_id_file = /etc/graylog/server/node-id                                                           
 
# You MUST set a secret to secure/pepper the stored user passwords here. Use at least 64 characters.
# Generate one by using for example: pwgen -N 1 -s 96                                               
# Django : 2015-12-28                                                                               
# default: password_secret =                                                                        
password_secret = yCWAd48fvOmR7xAmcKezZ2C0v3mtaXCJjA7NfhBlSf98PTxHrf9SrCQDX2xgjCzrHpxoV5UNOEfQZsOP1gkWkYlDarD75tbtztPhR59O70yZchaJcyQTeHBZllQc8RcT
 
# The default root user is named 'admin'
# Django : 2015-12-28                   
# default: #root_username = admin       
root_username = admin                   
 
# You MUST specify a hash password for the root user (which you only need to initially set up the
# system and in case you lose connectivity to your authentication backend)                       
# This password cannot be changed using the API or via the web interface. If you need to change it,
# modify it in this file.                                                                          
# Create one by using for example: echo -n yourpassword | shasum -a 256                            
# and put the resulting hash value into the following line                                         
# Django : 2015-12-28                                                                              
# default: root_password_sha2 =                                                                    
root_password_sha2 = 38337fd07fd4ee02548053d7bed3ee33e3e0c593c2802941e2349fc52e80b98d
 
# The email address of the root user.
# Default is empty                   
# Django : 2015-12-28                
# default: #root_email = ""          
root_email = "graylog_admin@nausch.org"
 
# The time zone setting of the root user.
# The configured time zone must be parseable by http://www.joda.org/joda-time/apidocs/org/joda/time/DateTimeZone.html#forID-java.lang.String-
# Default is UTC                                                                                                                             
# Django : 2015-12-28                                                                                                                        
# default: #root_timezone = UTC                                                                                                              
root_timezone = Europe/Berlin                                                                                                                
 
# Set plugin directory here (relative or absolute)
plugin_dir = /usr/share/graylog-server/plugin     
 
# REST API listen URI. Must be reachable by other graylog2-server nodes if you run a cluster.
rest_listen_uri = http://127.0.0.1:12900/                                                    
 
# REST API transport address. Defaults to the value of rest_listen_uri. Exception: If rest_listen_uri
# is set to a wildcard IP address (0.0.0.0) the first non-loopback IPv4 system address is used.      
# If set, his will be promoted in the cluster discovery APIs, so other nodes may try to connect on   
# this address and it is used to generate URLs addressing entities in the REST API. (see rest_listen_uri)
# You will need to define this, if your Graylog server is running behind a HTTP proxy that is rewriting  
# the scheme, host name or URI.                                                                          
#rest_transport_uri = http://192.168.1.1:12900/                                                          
# Django : 2015-12-28                                                                                    
# default: unset                                                                                         
rest_transport_uri = http://10.0.0.117:12900/                                                            
 
# Enable CORS headers for REST API. This is necessary for JS-clients accessing the server directly.
# If these are disabled, modern browsers will not be able to retrieve resources from the server.   
# This is disabled by default. Uncomment the next line to enable it.                               
#rest_enable_cors = true                                                                           
# Django : 2015-12-28                                                                              
# default: unset                                                                                   
rest_enable_cors = true                                                                            
 
# Enable GZIP support for REST API. This compresses API responses and therefore helps to reduce
# overall round trip times. This is disabled by default. Uncomment the next line to enable it. 
#rest_enable_gzip = true                                                                       
# Django : 2015-12-28                                                                          
# default: unset                                                                               
rest_enable_gzip = true                                                                        
 
# Enable HTTPS support for the REST API. This secures the communication with the REST API with
# TLS to prevent request forgery and eavesdropping. This is disabled by default. Uncomment the
# next line to enable it.                                                                     
#rest_enable_tls = true                                                                       
 
# The X.509 certificate file to use for securing the REST API.
#rest_tls_cert_file = /path/to/graylog2.crt                   
 
# The private key to use for securing the REST API.
#rest_tls_key_file = /path/to/graylog2.key         
 
# The password to unlock the private key used for securing the REST API.
#rest_tls_key_password = secret                                         
 
# The maximum size of a single HTTP chunk in bytes.
#rest_max_chunk_size = 8192                        
 
# The maximum size of the HTTP request headers in bytes.
#rest_max_header_size = 8192                            
 
# The maximal length of the initial HTTP/1.1 line in bytes.
#rest_max_initial_line_length = 4096                       
 
# The size of the execution handler thread pool used exclusively for serving the REST API.
#rest_thread_pool_size = 16                                                               
 
# The size of the worker thread pool used exclusively for serving the REST API.
#rest_worker_threads_max_pool_size = 16                                        
 
# Embedded Elasticsearch configuration file
# pay attention to the working directory of the server, maybe use an absolute path here
#elasticsearch_config_file = /etc/graylog/server/elasticsearch.yml                     
 
# Graylog will use multiple indices to store documents in. You can configured the strategy it uses to determine
# when to rotate the currently active write index.                                                             
# It supports multiple rotation strategies:                                                                    
#   - "count" of messages per index, use elasticsearch_max_docs_per_index below to configure                   
#   - "size" per index, use elasticsearch_max_size_per_index below to configure                                
# valid values are "count", "size" and "time", default is "count"                                              
# Django : 2015-12-28                                                                                          
# default: rotation_strategy = count                                                                           
rotation_strategy = time                                                                                       
 
# (Approximate) maximum number of documents in an Elasticsearch index before a new index
# is being created, also see no_retention and elasticsearch_max_number_of_indices.      
# Configure this if you used 'rotation_strategy = count' above.                         
# Django : 2015-12-28                                                                   
# default: elasticsearch_max_docs_per_index = 20000000                                  
 
# (Approximate) maximum size in bytes per Elasticsearch index on disk before a new index is being created, also see
# no_retention and elasticsearch_max_number_of_indices. Default is 1GB.                                            
# Configure this if you used 'rotation_strategy = size' above.                                                     
#elasticsearch_max_size_per_index = 1073741824                                                                     
 
# (Approximate) maximum time before a new Elasticsearch index is being created, also see
# no_retention and elasticsearch_max_number_of_indices. Default is 1 day.               
# Configure this if you used 'rotation_strategy = time' above.                          
# Please note that this rotation period does not look at the time specified in the received messages, but is
# using the real clock value to decide when to rotate the index!                                            
# Specify the time using a duration and a suffix indicating which unit you want:                            
#  1w  = 1 week                                                                                             
#  1d  = 1 day                                                                                              
#  12h = 12 hours                                                                                           
# Permitted suffixes are: d for day, h for hour, m for minute, s for second.                                
#elasticsearch_max_time_per_index = 1d                                                                      
# Django : 2015-12-28                                                                                       
# default: unset                                                                                            
elasticsearch_max_time_per_index = 1d                                                                       
 
# Disable checking the version of Elasticsearch for being compatible with this Graylog release.
# WARNING: Using Graylog with unsupported and untested versions of Elasticsearch may lead to data loss!
#elasticsearch_disable_version_check = true                                                            
 
# Disable message retention on this node, i. e. disable Elasticsearch index rotation.
#no_retention = false                                                                
 
# How many indices do you want to keep?
# Django : 2015-12-28                  
# default: elasticsearch_max_number_of_indices = 20
elasticsearch_max_number_of_indices = 30           
 
# Decide what happens with the oldest indices when the maximum number of indices is reached.
# The following strategies are availble:                                                    
#   - delete # Deletes the index completely (Default)                                       
#   - close # Closes the index and hides it from the system. Can be re-opened later.        
retention_strategy = delete                                                                 
 
# How many Elasticsearch shards and replicas should be used per index? Note that this only applies to newly created indices.
# Django : 2015-12-28                                                                                                       
# default: elasticsearch_shards = 4                                                                                         
elasticsearch_shards = 1                                                                                                    
elasticsearch_replicas = 0                                                                                                  
 
 
# Prefix for all Elasticsearch indices and index aliases managed by Graylog.
# Django : 2015-12-28                                                       
# default: elasticsearch_index_prefix = graylog2                            
elasticsearch_index_prefix = graylog                                        
 
# Name of the Elasticsearch index template used by Graylog to apply the mandatory index mapping.
# # Default: graylog-internal                                                                   
#elasticsearch_template_name = graylog-internal                                                 
 
# Do you want to allow searches with leading wildcards? This can be extremely resource hungry and should only
# be enabled with care. See also: https://www.graylog.org/documentation/general/queries/                     
allow_leading_wildcard_searches = false                                                                      
 
# Do you want to allow searches to be highlighted? Depending on the size of your messages this can be memory hungry and
# should only be enabled after making sure your Elasticsearch cluster has enough memory.                               
allow_highlighting = false                                                                                             
 
# settings to be passed to elasticsearch's client (overriding those in the provided elasticsearch_config_file)
# all these                                                                                                   
# this must be the same as for your Elasticsearch cluster                                                     
#elasticsearch_cluster_name = graylog2                                                                        
# Django : 2015-12-28                                                                                         
# default: unset                                                                                              
elasticsearch_cluster_name = graylog                                                                          
 
# you could also leave this out, but makes it easier to identify the graylog2 client instance
#elasticsearch_node_name = graylog2-server                                                   
# Django : 2015-12-28                                                                        
# default: unset                                                                             
elasticsearch_node_name = vml000117                                                          
 
# we don't want the graylog2 server to store any data, or be master node
# Django : 2015-12-28                                                   
# default: #elasticsearch_node_master = false                           
#          #elasticsearch_node_data = false                             
elasticsearch_node_master = false                                       
elasticsearch_node_data = false                                         
 
# use a different port if you run multiple Elasticsearch nodes on one machine
#elasticsearch_transport_tcp_port = 9350                                     
 
# we don't need to run the embedded HTTP server here
# Django : 2015-12-28                               
# default: #elasticsearch_http_enabled = false      
elasticsearch_http_enabled = false                  
 
# Django : 2015-12-28
# default: #elasticsearch_discovery_zen_ping_multicast_enabled = false
elasticsearch_discovery_zen_ping_multicast_enabled = false            
 
#elasticsearch_discovery_zen_ping_unicast_hosts = 127.0.0.1:9300
 
# Change the following setting if you are running into problems with timeouts during Elasticsearch cluster discovery.
# The setting is specified in milliseconds, the default is 5000ms (5 seconds).                                       
#elasticsearch_cluster_discovery_timeout = 5000                                                                      
 
# the following settings allow to change the bind addresses for the Elasticsearch client in graylog2
# these settings are empty by default, letting Elasticsearch choose automatically,                  
# override them here or in the 'elasticsearch_config_file' if you need to bind to a special address 
# refer to http://www.elasticsearch.org/guide/en/elasticsearch/reference/0.90/modules-network.html  
# for special values here                                                                           
#elasticsearch_network_host =                                                                       
#elasticsearch_network_bind_host =                                                                  
#elasticsearch_network_publish_host =                                                               
 
# The total amount of time discovery will look for other Elasticsearch nodes in the cluster
# before giving up and declaring the current node master.                                  
#elasticsearch_discovery_initial_state_timeout = 3s                                        
 
# Analyzer (tokenizer) to use for message and full_message field. The "standard" filter usually is a good idea.
# All supported analyzers are: standard, simple, whitespace, stop, keyword, pattern, language, snowball, custom
# Elasticsearch documentation: http://www.elasticsearch.org/guide/reference/index-modules/analysis/            
# Note that this setting only takes effect on newly created indices.                                           
elasticsearch_analyzer = standard                                                                              
 
# Global request timeout for Elasticsearch requests (e. g. during search, index creation, or index time-range
# calculations) based on a best-effort to restrict the runtime of Elasticsearch operations.                  
# Default: 1m                                                                                                
#elasticsearch_request_timeout = 1m                                                                          
 
# Time interval for index range information cleanups. This setting defines how often stale index range information
# is being purged from the database.                                                                              
# Default: 1h                                                                                                     
#index_ranges_cleanup_interval = 1h                                                                               
 
# Batch size for the Elasticsearch output. This is the maximum (!) number of messages the Elasticsearch output
# module will get at once and write to Elasticsearch in a batch call. If the configured batch size has not been
# reached within output_flush_interval seconds, everything that is available will be flushed at once. Remember 
# that every outputbuffer processor manages its own batch and performs its own batch write calls.              
# ("outputbuffer_processors" variable)                                                                         
output_batch_size = 500                                                                                        
 
# Flush interval (in seconds) for the Elasticsearch output. This is the maximum amount of time between two
# batches of messages written to Elasticsearch. It is only effective at all if your minimum number of messages
# for this time period is less than output_batch_size * outputbuffer_processors.                              
output_flush_interval = 1                                                                                     
 
# As stream outputs are loaded only on demand, an output which is failing to initialize will be tried over and
# over again. To prevent this, the following configuration options define after how many faults an output will
# not be tried again for an also configurable amount of seconds.                                              
output_fault_count_threshold = 5                                                                              
output_fault_penalty_seconds = 30                                                                             
 
# The number of parallel running processors.
# Raise this number if your buffers are filling up.
processbuffer_processors = 5                       
outputbuffer_processors = 3                        
 
#outputbuffer_processor_keep_alive_time = 5000
#outputbuffer_processor_threads_core_pool_size = 3
#outputbuffer_processor_threads_max_pool_size = 30
 
# UDP receive buffer size for all message inputs (e. g. SyslogUDPInput).
#udp_recvbuffer_sizes = 1048576                                         
 
# Wait strategy describing how buffer processors wait on a cursor sequence. (default: sleeping)
# Possible types:                                                                              
#  - yielding                                                                                  
#     Compromise between performance and CPU usage.                                            
#  - sleeping                                                                                  
#     Compromise between performance and CPU usage. Latency spikes can occur after quiet periods.
#  - blocking                                                                                    
#     High throughput, low latency, higher CPU usage.                                            
#  - busy_spinning                                                                               
#     Avoids syscalls which could introduce latency jitter. Best when threads can be bound to specific CPU cores.
processor_wait_strategy = blocking                                                                               
 
# Size of internal ring buffers. Raise this if raising outputbuffer_processors does not help anymore.
# For optimum performance your LogMessage objects in the ring buffer should fit in your CPU L3 cache.
# Start server with --statistics flag to see buffer utilization.                                     
# Must be a power of 2. (512, 1024, 2048, ...)                                                       
ring_size = 65536                                                                                    
 
inputbuffer_ring_size = 65536
inputbuffer_processors = 2   
inputbuffer_wait_strategy = blocking
 
# Enable the disk based message journal.
message_journal_enabled = true          
 
# The directory which will be used to store the message journal. The directory must me exclusively used by Graylog and
# must not contain any other files than the ones created by Graylog itself.                                           
message_journal_dir = /var/lib/graylog-server/journal                                                                 
 
# Journal hold messages before they could be written to Elasticsearch.
# For a maximum of 12 hours or 5 GB whichever happens first.          
# During normal operation the journal will be smaller.                
#message_journal_max_age = 12h                                        
#message_journal_max_size = 5gb                                       
 
#message_journal_flush_age = 1m
#message_journal_flush_interval = 1000000
#message_journal_segment_age = 1h        
#message_journal_segment_size = 100mb    
 
# Number of threads used exclusively for dispatching internal events. Default is 2.
#async_eventbus_processors = 2                                                     
 
# EXPERIMENTAL: Dead Letters
# Every failed indexing attempt is logged by default and made visible in the web-interface. You can enable
# the experimental dead letters feature to write every message that was not successfully indexed into the 
# MongoDB "dead_letters" collection to make sure that you never lose a message. The actual writing of dead
# letter should work fine already but it is not heavily tested yet and will get more features in future   
# releases.                                                                                               
dead_letters_enabled = false                                                                              
 
# How many seconds to wait between marking node as DEAD for possible load balancers and starting the actual
# shutdown process. Set to 0 if you have no status checking load balancers in front.                       
lb_recognition_period_seconds = 3                                                                          
 
# Every message is matched against the configured streams and it can happen that a stream contains rules which
# take an unusual amount of time to run, for example if its using regular expressions that perform excessive backtracking.
# This will impact the processing of the entire server. To keep such misbehaving stream rules from impacting other        
# streams, Graylog limits the execution time for each stream.                                                             
# The default values are noted below, the timeout is in milliseconds.                                                     
# If the stream matching for one stream took longer than the timeout value, and this happened more than "max_faults" times
# that stream is disabled and a notification is shown in the web interface.                                               
#stream_processing_timeout = 2000                                                                                         
#stream_processing_max_faults = 3                                                                                         
 
# Length of the interval in seconds in which the alert conditions for all streams should be checked
# and alarms are being sent.                                                                       
#alert_check_interval = 60                                                                         
 
# Since 0.21 the graylog2 server supports pluggable output modules. This means a single message can be written to multiple
# outputs. The next setting defines the timeout for a single output module, including the default output module where all 
# messages end up.                                                                                                        
#                                                                                                                         
# Time in milliseconds to wait for all message outputs to finish writing a single message.                                
#output_module_timeout = 10000                                                                                            
 
# Time in milliseconds after which a detected stale master node is being rechecked on startup.
#stale_master_timeout = 2000                                                                  
 
# Time in milliseconds which Graylog is waiting for all threads to stop on shutdown.
#shutdown_timeout = 30000                                                           
 
# MongoDB connection string
# See http://docs.mongodb.org/manual/reference/connection-string/ for details
# Django : 2015-12-28                                                        
# default: mongodb_uri = mongodb://localhost/graylog2                        
mongodb_uri = mongodb://graylog:7h3FBI15n07ar0ckb4and@localhost:27017/graylog
 
# Authenticate against the MongoDB server
#mongodb_uri = mongodb://grayloguser:secret@localhost:27017/graylog2
 
# Use a replica set instead of a single host
#mongodb_uri = mongodb://grayloguser:secret@localhost:27017,localhost:27018,localhost:27019/graylog2
 
# Increase this value according to the maximum connections your MongoDB server can handle from a single client
# if you encounter MongoDB connection problems.                                                               
mongodb_max_connections = 100                                                                                 
 
# Number of threads allowed to be blocked by MongoDB connections multiplier. Default: 5
# If mongodb_max_connections is 100, and mongodb_threads_allowed_to_block_multiplier is 5,
# then 500 threads can block. More than that and an exception will be thrown.             
# http://api.mongodb.org/java/current/com/mongodb/MongoOptions.html#threadsAllowedToBlockForConnectionMultiplier
mongodb_threads_allowed_to_block_multiplier = 5                                                                 
 
# Drools Rule File (Use to rewrite incoming log messages)
# See: https://www.graylog.org/documentation/general/rewriting/
#rules_file = /etc/graylog/server/rules.drl                    
 
# Email transport
#transport_email_enabled = false
#transport_email_hostname = mail.example.com
#transport_email_port = 587                 
#transport_email_use_auth = true            
#transport_email_use_tls = true             
#transport_email_use_ssl = true             
#transport_email_auth_username = you@example.com
#transport_email_auth_password = secret         
#transport_email_subject_prefix = [graylog2]    
#transport_email_from_email = graylog2@example.com
# Django : 2015-12-28                             
# default: unset                                  
transport_email_enabled = true                    
transport_email_hostname = smtp.dmz.nausch.org    
transport_email_use_tls = true                    
transport_email_subject_prefix = [graylog2]       
transport_email_from_email = graylog@nausch.org   
 
# Specify and uncomment this if you want to include links to the stream in your stream alert mails.
# This should define the fully qualified base url to your web interface exactly the same way as it is accessed by your users.
#transport_email_web_interface_url = https://graylog2.example.com                                                            
# Django : 2015-12-28                                                                                                        
# default: transport_email_web_interface_url = https://graylog2.example.com                                                  
transport_email_web_interface_url = https://panopticon.nausch.org                                                            
 
# The default connect timeout for outgoing HTTP connections.
# Values must be a positive duration (and between 1 and 2147483647 when converted to milliseconds).
# Default: 5s
#http_connect_timeout = 5s
 
# The default read timeout for outgoing HTTP connections.
# Values must be a positive duration (and between 1 and 2147483647 when converted to milliseconds).
# Default: 10s
#http_read_timeout = 10s
 
# The default write timeout for outgoing HTTP connections.
# Values must be a positive duration (and between 1 and 2147483647 when converted to milliseconds).
# Default: 10s
#http_write_timeout = 10s
 
# HTTP proxy for outgoing HTTP connections
#http_proxy_uri =
 
# Disable the optimization of Elasticsearch indices after index cycling. This may take some load from Elasticsearch
# on heavily used systems with large indices, but it will decrease search performance. The default is to optimize
# cycled indices.
#disable_index_optimization = true
 
# Optimize the index down to <= index_optimization_max_num_segments. A higher number may take some load from Elasticsearch
# on heavily used systems with large indices, but it will decrease search performance. The default is 1.
#index_optimization_max_num_segments = 1
 
# The threshold of the garbage collection runs. If GC runs take longer than this threshold, a system notification
# will be generated to warn the administrator about possible problems with the system. Default is 1 second.
#gc_warning_threshold = 1s
 
# Connection timeout for a configured LDAP server (e. g. ActiveDirectory) in milliseconds.
#ldap_connection_timeout = 2000
 
# Enable collection of Graylog-related metrics into MongoDB
# WARNING: This will add *a lot* of data into your MongoDB database on a regular interval (1 second)!
# DEPRECATED: This setting and the respective feature will be removed in a future version of Graylog.
#enable_metrics_collection = false
 
# Disable the use of SIGAR for collecting system stats
#disable_sigar = false
 
# Amount of time of inactivity after which collectors are flagged as inactive (Default: 1 minute)
#collector_inactive_threshold = 1m
 
# Amount of time after which inactive collectors are purged (Default: 14 days)
#collector_expiration_threshold = 14d
 
# The default cache time for dashboard widgets. (Default: 10 seconds, minimum: 1 second)
#dashboard_widget_default_cache_time = 10s
 
# Automatically load content packs in "content_packs_dir" on the first start of Graylog.
#content_packs_loader_enabled = true
 
# The directory which contains content packs which should be loaded on the first start of Graylog.
content_packs_dir = /usr/share/graylog-server/contentpacks
 
# A comma-separated list of content packs (files in "content_packs_dir") which should be applied on
# the first start of Graylog.
content_packs_auto_load = grok-patterns.json

Unsere Konfigurationsänderungen werden mit Hilfe von mongo der MongoDB Shell vorgenommen. Dieses JavaScript stellt die Benutzerschnittstelle zum eigentlichen MongoDN-Daemon zur Verfügung. Damit sich der Client mit dem Server auch verbinden kann, muss der Server natürlich laufen; wir starten also nun unsere NoSQL-Datenbank mit folgendem Befehl.

 # systemctl start graylog-server.service

Den Serverstatus können wir wie folgt abfragen.

 # systemctl status graylog-server.service

● graylog-server.service - Graylog server
   Loaded: loaded (/usr/lib/systemd/system/graylog-server.service; enabled; vendor preset: disabled)
   Active: active (running) since Mon 2015-12-28 14:27:40 CET; 6s ago
     Docs: http://docs.graylog.org/
 Main PID: 5057 (graylog-server)
   CGroup: /system.slice/graylog-server.service
           ├─5057 /bin/sh /usr/share/graylog-server/bin/graylog-server
           └─5058 /usr/bin/java -Xms1g -Xmx1g -XX:NewRatio=1 -server -XX:+ResizeTLAB -XX:+UseConcMarkSweepGC -XX:+CMSConcurrentMTEnabled -XX:+CMSClassUnloadingEnabled -XX:+UsePa...

Dec 28 14:27:40 vml000117.dmz.nausch.org systemd[1]: Started Graylog server.
Dec 28 14:27:40 vml000117.dmz.nausch.org systemd[1]: Starting Graylog server...

 # /var/log/elasticsearch/elasticsearch.log

Dec 28 14:27:40 vml000117.dmz.nausch.org systemd[1]: Started Graylog server.
Dec 28 14:27:40 vml000117.dmz.nausch.org systemd[1]: Starting Graylog server...
[root@vml000117 yum.repos.d]# tailf /var/log/graylog-server/server.log
2015-12-28T14:27:55.595+01:00 INFO  [discovery] [vml000117] graylog/j4zrCy-gQpqKTAMqM_XGkg
2015-12-28T14:27:55.609+01:00 INFO  [RestApiService] Enabling CORS for REST API
2015-12-28T14:27:58.627+01:00 WARN  [discovery] [vml000117] waited for 3s and no initial state was set by the discovery
2015-12-28T14:27:58.627+01:00 INFO  [node] [vml000117] started
2015-12-28T14:27:59.138+01:00 INFO  [service] [vml000117] detected_master [vml000117][EdAnadZuTiOjxFR7_Kvdrg][vml000117.dmz.nausch.org][inet[/10.0.0.117:9300]], added {[vml000117][EdAnadZuTiOjxFR7_Kvdrg][vml000117.dmz.nausch.org][inet[/10.0.0.117:9300]],}, reason: zen-disco-receive(from master [[vml000117][EdAnadZuTiOjxFR7_Kvdrg][vml000117.dmz.nausch.org][inet[/10.0.0.117:9300]]])
2015-12-28T14:28:05.324+01:00 INFO  [IndexRotationThread] Deflector index <graylog_1> should be rotated, Pointing deflector to new index now!
2015-12-28T14:28:05.324+01:00 INFO  [Deflector] Cycling deflector to next index now.
2015-12-28T14:28:05.340+01:00 INFO  [Deflector] Cycling from <graylog_1> to <graylog_2>
2015-12-28T14:28:05.340+01:00 INFO  [Deflector] Creating index target <graylog_2>...
2015-12-28T14:28:06.218+01:00 INFO  [Deflector] Waiting for index allocation of <graylog_2>
2015-12-28T14:28:06.335+01:00 INFO  [Deflector] Done!
2015-12-28T14:28:06.335+01:00 INFO  [Deflector] Pointing deflector to new target index....
2015-12-28T14:28:06.531+01:00 INFO  [SystemJobManager] Submitted SystemJob <d4502600-ad66-11e5-8de7-5254005fa52f> [org.graylog2.indexer.ranges.CreateNewSingleIndexRangeJob]
2015-12-28T14:28:06.537+01:00 INFO  [CreateNewSingleIndexRangeJob] Calculating ranges for index graylog_1.
2015-12-28T14:28:06.610+01:00 INFO  [SystemJobManager] Submitted SystemJob <d4557d30-ad66-11e5-8de7-5254005fa52f> [org.graylog2.indexer.SetIndexReadOnlyJob]
2015-12-28T14:28:06.658+01:00 INFO  [SystemJobManager] Submitted SystemJob <d461b230-ad66-11e5-8de7-5254005fa52f> [org.graylog2.indexer.ranges.CreateNewSingleIndexRangeJob]
2015-12-28T14:28:06.658+01:00 INFO  [Deflector] Done!
2015-12-28T14:28:06.618+01:00 INFO  [CreateNewSingleIndexRangeJob] Calculating ranges for index graylog_2.
2015-12-28T14:28:06.720+01:00 INFO  [MongoIndexRangeService] Calculated range of [graylog_1] in [182ms].
2015-12-28T14:28:06.807+01:00 INFO  [CreateNewSingleIndexRangeJob] Created ranges for index graylog_1.
2015-12-28T14:28:06.807+01:00 INFO  [SystemJobManager] SystemJob <d4502600-ad66-11e5-8de7-5254005fa52f> [org.graylog2.indexer.ranges.CreateNewSingleIndexRangeJob] finished in 269ms.
2015-12-28T14:28:06.879+01:00 INFO  [MongoIndexRangeService] Calculated range of [graylog_2] in [180ms].
2015-12-28T14:28:06.930+01:00 INFO  [CreateNewSingleIndexRangeJob] Created ranges for index graylog_2.
2015-12-28T14:28:06.931+01:00 INFO  [SystemJobManager] SystemJob <d461b230-ad66-11e5-8de7-5254005fa52f> [org.graylog2.indexer.ranges.CreateNewSingleIndexRangeJob] finished in 312ms.
2015-12-28T14:28:08.315+01:00 INFO  [RestApiService] Adding security context factory: <org.graylog2.security.ShiroSecurityContextFactory@79ffbf1a>
2015-12-28T14:28:08.354+01:00 INFO  [RestApiService] Started REST API at <http://127.0.0.1:12900/>
2015-12-28T14:28:08.355+01:00 INFO  [ServiceManagerListener] Services are healthy
2015-12-28T14:28:08.357+01:00 INFO  [ServerBootstrap] Services started, startup times in ms: {InputSetupService [RUNNING]=5, OutputSetupService [RUNNING]=32, BufferSynchronizerService [RUNNING]=33, MetricsReporterService [RUNNING]=36, JournalReader [RUNNING]=45, KafkaJournal [RUNNING]=45, PeriodicalsService [RUNNING]=304, IndexerSetupService [RUNNING]=4286, RestApiService [RUNNING]=13364}
2015-12-28T14:28:08.360+01:00 INFO  [ServerBootstrap] Graylog server up and running.
2015-12-28T14:28:08.361+01:00 INFO  [InputSetupService] Triggering launching persisted inputs, node transitioned from Uninitialized [LB:DEAD] to Running [LB:ALIVE]