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System and settingsedit
-
Elasticsearch now runs in the foreground by default. There is no more
-f
flag on the command line. Instead, to run elasticsearch as a daemon, use the-d
flag:
./bin/elasticsearch -d
-
Command line settings can now be passed without the
-Des.
prefix, for instance:
./bin/elasticsearch --node.name=search_1 --cluster.name=production
-
Elasticsearch on 64 bit Linux now uses
mmapfs
by default. Make sure that you setMAX_MAP_COUNT
to a sufficiently high number. The RPM and Debian packages default this value to262144
. - The RPM and Debian packages no longer start Elasticsearch by default.
The
cluster.routing.allocation
settings (disable_allocation
,disable_new_allocation
anddisable_replica_location
) have been replaced by the single setting:cluster.routing.allocation.enable: all|primaries|new_primaries|none