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--- documentazione_3di_riservata:manuali_sysadmin:installazione_elastic [2017/10/03 12:20] – mpascale
+++ documentazione_3di_riservata:manuali_sysadmin:installazione_elastic [Data sconosciuta] (versione attuale) – eliminata - modifica esterna (Data sconosciuta) 127.0.0.1
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-==== Installazione presa da un nodo di test 3D (IRONMAN) ====
-Dopo aver aggiornato il sistema operativo ed installato i software (JDK ed Elastic) procediamo come segue
-=== Limits.conf ===
-<code bash>
-...
-elasticsearch - nofile  65536
-elasticsearch - nproc   2048
-elasticsearch soft memlock unlimited
-elasticsearch hard memlock unlimited
-#elasticsearch -        memlock unlimited
-</code>
-=== Elastic ===
-== jvm.options ==
-Esempio
-<code bash>
-## JVM configuration
-################################################################
-## IMPORTANT: JVM heap size
-################################################################
-##
-## You should always set the min and max JVM heap
-## size to the same value. For example, to set
-## the heap to 4 GB, set:
-##
-## -Xms4g
-## -Xmx4g
-##
-## See https://www.elastic.co/guide/en/elasticsearch/reference/current/heap-size.html
-## for more information
-##
-################################################################
-# Xms represents the initial size of total heap space
-# Xmx represents the maximum size of total heap space
--Xms1g
--Xmx1g
-################################################################
-## Expert settings
-################################################################
-##
-## All settings below this section are considered
-## expert settings. Don't tamper with them unless
-## you understand what you are doing
-##
-################################################################
-## GC configuration
--XX:+UseConcMarkSweepGC
--XX:CMSInitiatingOccupancyFraction=75
--XX:+UseCMSInitiatingOccupancyOnly
-## optimizations
-# disable calls to System#gc
--XX:+DisableExplicitGC
-# pre-touch memory pages used by the JVM during initialization
--XX:+AlwaysPreTouch
-## basic
-# force the server VM (remove on 32-bit client JVMs)
--server
-# explicitly set the stack size (reduce to 320k on 32-bit client JVMs)
--Xss1m
-# set to headless, just in case
--Djava.awt.headless=true
-# ensure UTF-8 encoding by default (e.g. filenames)
--Dfile.encoding=UTF-8
-# use our provided JNA always versus the system one
--Djna.nosys=true
-# use old-style file permissions on JDK9
--Djdk.io.permissionsUseCanonicalPath=true
-# flags to configure Netty
--Dio.netty.noUnsafe=true
--Dio.netty.noKeySetOptimization=true
--Dio.netty.recycler.maxCapacityPerThread=0
-# log4j 2
--Dlog4j.shutdownHookEnabled=false
--Dlog4j2.disable.jmx=true
--Dlog4j.skipJansi=true
-## heap dumps
-# PROXY Options
-#-Dhttp.proxyHost=proxy.equitaliaservizi.org
-#-Dhttp.proxyPort=80
-#-Dhttps.proxyHost=proxy.equitaliaservizi.org
-#-Dhttps.proxyPort=80
-# generate a heap dump when an allocation from the Java heap fails
-# heap dumps are created in the working directory of the JVM
--XX:+HeapDumpOnOutOfMemoryError
-# specify an alternative path for heap dumps
-# ensure the directory exists and has sufficient space
-#-XX:HeapDumpPath=${heap.dump.path}
-## GC logging
-#-XX:+PrintGCDetails
-#-XX:+PrintGCTimeStamps
-#-XX:+PrintGCDateStamps
-#-XX:+PrintClassHistogram
-#-XX:+PrintTenuringDistribution
-#-XX:+PrintGCApplicationStoppedTime
-# log GC status to a file with time stamps
-# ensure the directory exists
-#-Xloggc:${loggc}
-# By default, the GC log file will not rotate.
-# By uncommenting the lines below, the GC log file
-# will be rotated every 128MB at most 32 times.
-#-XX:+UseGCLogFileRotation
-#-XX:NumberOfGCLogFiles=32
-#-XX:GCLogFileSize=128M
-# Elasticsearch 5.0.0 will throw an exception on unquoted field names in JSON.
-# If documents were already indexed with unquoted fields in a previous version
-# of Elasticsearch, some operations may throw errors.
-#
-# WARNING: This option will be removed in Elasticsearch 6.0.0 and is provided
-# only for migration purposes.
-#-Delasticsearch.json.allow_unquoted_field_names=true
-</code>
-<WRAP center round info 80%>
-La memoria assegnata ad Elastic non deve superare il 50% della memoria totale disponibile.
-</WRAP>
-== elasticsearch.yml ==
-Esempio
-<code yml>
-# ======================== Elasticsearch Configuration =========================
-#
-# NOTE: Elasticsearch comes with reasonable defaults for most settings.
-#       Before you set out to tweak and tune the configuration, make sure you
-#       understand what are you trying to accomplish and the consequences.
-#
-# The primary way of configuring a node is via this file. This template lists
-# the most important settings you may want to configure for a production cluster.
-#
-# Please consult the documentation for further information on configuration options:
-# https://www.elastic.co/guide/en/elasticsearch/reference/index.html
-#
-# ---------------------------------- Cluster -----------------------------------
-#
-# Use a descriptive name for your cluster:
-#
-cluster.name: 3delk
-#
-# ------------------------------------ Node ------------------------------------
-#
-# Use a descriptive name for the node:
-#
-node.name: ironman
-#
-# Add custom attributes to the node:
-#
-#node.attr.rack: r1
-#
-# ----------------------------------- Paths ------------------------------------
-#
-# Path to directory where to store the data (separate multiple locations by comma):
-#
-#path.data: /path/to/data
-#
-# Path to log files:
-#
-#path.logs: /path/to/logs
-#
-# ----------------------------------- Memory -----------------------------------
-#
-# Lock the memory on startup:
-#
-bootstrap.memory_lock: true
-#
-# Make sure that the heap size is set to about half the memory available
-# on the system and that the owner of the process is allowed to use this
-# limit.
-#
-# Elasticsearch performs poorly when the system is swapping the memory.
-#
-# ---------------------------------- Network -----------------------------------
-#
-# Set the bind address to a specific IP (IPv4 or IPv6):
-#
-network.host: 0.0.0.0
-#
-# Set a custom port for HTTP:
-#
-http.port: 9200
-transport.tcp.port: 9300
-network.publish_host: 192.168.200.103
-#
-# For more information, consult the network module documentation.
-#
-# --------------------------------- Discovery ----------------------------------
-#
-# Pass an initial list of hosts to perform discovery when new node is started:
-# The default list of hosts is ["127.0.0.1", "[::1]"]
-#
-discovery.zen.ping.unicast.hosts: ["192.168.200.103:9300","192.168.1.104:9300","192.168.1.105:9300"]
-#
-# Prevent the "split brain" by configuring the majority of nodes (total number of master-eligible nodes / 2 + 1):
-#
-discovery.zen.minimum_master_nodes: 2
-#
-# For more information, consult the zen discovery module documentation.
-#
-# ---------------------------------- Gateway -----------------------------------
-#
-# Block initial recovery after a full cluster restart until N nodes are started:
-#
-#gateway.recover_after_nodes: 3
-#
-# For more information, consult the gateway module documentation.
-#
-# ---------------------------------- Various -----------------------------------
-#
-# Require explicit names when deleting indices:
-#
-#action.destructive_requires_name: true
-node.master: true
-node.data: true
-</code>
-Le cose importanti sono:
-  * Nome del cluster;
-  * nome del nodo;
-  * bootstrapt memory lock;
-  * discovery unicast;
-  * node.master;
-  * node.data;
-  * max locked memory.
-===/usr/lib/systemd/system/elasticsearch.service===
-<code>
-...
-# Specifies the maximum number of bytes of memory that may be locked into RAM
-# Set to "infinity" if you use the 'bootstrap.memory_lock: true' option
-# in elasticsearch.yml and 'MAX_LOCKED_MEMORY=unlimited' in /etc/sysconfig/elasticsearch
-LimitMEMLOCK=infinity
-...
-</code>
-===/etc/sysconfig/elasticsearch===
-<code>
-...
-# The maximum number of bytes of memory that may be locked into RAM
-# Set to "unlimited" if you use the 'bootstrap.memory_lock: true' option
-# in elasticsearch.yml.
-# When using Systemd, the LimitMEMLOCK property must be set
-# in /usr/lib/systemd/system/elasticsearch.service
-MAX_LOCKED_MEMORY=unlimited
-...
-</code>