elasticsearch: can not run elasticsearch as root
进入bin目录启动elasticsearch：
lunadeMacBook-Air:elasticsearch-6.1.0 luna$ cd bin/ lunadeMacBook-Air:bin luna$ sudo ./elasticsearch Password: [2018-02-04T17:15:48,785][WARN ][o.e.b.ElasticsearchUncaughtExceptionHandler] [] uncaught exception in thread [main] org.elasticsearch.bootstrap.StartupException: java.lang.RuntimeException: can not run elasticsearch as root at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:125) ~[elasticsearch-6.1.0.jar:6.1.0] at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:112) ~[elasticsearch-6.1.0.jar:6.1.0] at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) ~[elasticsearch-6.1.0.jar:6.1.0] at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:124) ~[elasticsearch-cli-6.1.0.jar:6.1.0] at org.elasticsearch.cli.Command.main(Command.java:90) ~[elasticsearch-cli-6.1.0.jar:6.1.0] at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:92) ~[elasticsearch-6.1.0.jar:6.1.0] at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:85) ~[elasticsearch-6.1.0.jar:6.1.0] Caused by: java.lang.RuntimeException: can not run elasticsearch as root at org.elasticsearch.bootstrap.Bootstrap.initializeNatives(Bootstrap.java:104) ~[elasticsearch-6.1.0.jar:6.1.0] at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:171) ~[elasticsearch-6.1.0.jar:6.1.0] at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:322) ~[elasticsearch-6.1.0.jar:6.1.0] at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:121) ~[elasticsearch-6.1.0.jar:6.1.0] ... 6 more
由于elasticsearch权限控制严格，不能用root用户启动。
那就把elasticsearch这个文件夹授权个一个用户吧。
1、进入安装目录：
lunadeMacBook-Air:local luna$ cd lunadeMacBook-Air:~ luna$ cd /usr/local/ lunadeMacBook-Air:local luna$ ll total 0 drwxr-xr-x 11 root wheel 374 2 3 21:31 ./ drwxr-xr-x@ 10 root wheel 340 5 23 2017 ../ drwxr-xr-x 3 root wheel 102 8 29 14:01 CNCB/ drwxr-xr-x 5 root wheel 170 6 17 2016 bin/ drwxr-xr-x@ 12 luna wheel 408 2 4 17:27 elasticsearch-6.1.0/ drwx------ 8 luna wheel 272 2 3 21:08 lib/ drwxr-xr-x 3 root wheel 102 8 29 14:01 libexec/ drwxr-xr-x 2 root wheel 68 6 18 2017 mysql/ drwxr-xr-x 3 root wheel 102 11 14 00:41 redis/ drwxr-xr-x 3 root wheel 102 3 7 2017 remotedesktop/ drwxr-xr-x 6 luna wheel 204 2 3 21:08 tools/
2、授权 elasticsearch-6.1.0给我笔记本登陆用户luna
lunadeMacBook-Air:local luna$ sudo chown -R luna elasticsearch-6.1.0/
3 、启动
lunadeMacBook-Air:bin luna$ ./elasticsearch [2018-02-04T17:27:51,275][INFO ][o.e.n.Node ] [] initializing ... [2018-02-04T17:27:51,679][INFO ][o.e.e.NodeEnvironment ] [HcAbRrt] using [1] data paths, mounts [[/ (/dev/disk1)]], net usable_space [31.8gb], net total_space [111.8gb], types [hfs] [2018-02-04T17:27:51,680][INFO ][o.e.e.NodeEnvironment ] [HcAbRrt] heap size [990.7mb], compressed ordinary object pointers [true] [2018-02-04T17:27:51,684][INFO ][o.e.n.Node ] node name [HcAbRrt] derived from node ID [HcAbRrt4RVqvazgkI-W18Q]; set [node.name] to override [2018-02-04T17:27:51,684][INFO ][o.e.n.Node ] version[6.1.0], pid[39966], build[c0c1ba0/2017-12-12T12:32:54.550Z], OS[Mac OS X/10.12.6/x86_64], JVM[Oracle Corporation/Java HotSpot(TM) 64-Bit Server VM/1.8.0_91/25.91-b14] [2018-02-04T17:27:51,685][INFO ][o.e.n.Node ] JVM arguments [-Xms1g, -Xmx1g, -XX:+UseConcMarkSweepGC, -XX:CMSInitiatingOccupancyFraction=75, -XX:+UseCMSInitiatingOccupancyOnly, -XX:+AlwaysPreTouch, -Xss1m, -Djava.awt.headless=true, -Dfile.encoding=UTF-8, -Djna.nosys=true, -XX:-OmitStackTraceInFastThrow, -Dio.netty.noUnsafe=true, -Dio.netty.noKeySetOptimization=true, -Dio.netty.recycler.maxCapacityPerThread=0, -Dlog4j.shutdownHookEnabled=false, -Dlog4j2.disable.jmx=true, -XX:+HeapDumpOnOutOfMemoryError, -Des.path.home=/usr/local/elasticsearch-6.1.0, -Des.path.conf=/usr/local/elasticsearch-6.1.0/config] [2018-02-04T17:27:54,536][INFO ][o.e.p.PluginsService ] [HcAbRrt] loaded module [aggs-matrix-stats] [2018-02-04T17:27:54,536][INFO ][o.e.p.PluginsService ] [HcAbRrt] loaded module [analysis-common] [2018-02-04T17:27:54,537][INFO ][o.e.p.PluginsService ] [HcAbRrt] loaded module [ingest-common] [2018-02-04T17:27:54,537][INFO ][o.e.p.PluginsService ] [HcAbRrt] loaded module [lang-expression] [2018-02-04T17:27:54,537][INFO ][o.e.p.PluginsService ] [HcAbRrt] loaded module [lang-mustache] [2018-02-04T17:27:54,538][INFO ][o.e.p.PluginsService ] [HcAbRrt] loaded module [lang-painless] [2018-02-04T17:27:54,538][INFO ][o.e.p.PluginsService ] [HcAbRrt] loaded module [mapper-extras] [2018-02-04T17:27:54,539][INFO ][o.e.p.PluginsService ] [HcAbRrt] loaded module [parent-join] [2018-02-04T17:27:54,539][INFO ][o.e.p.PluginsService ] [HcAbRrt] loaded module [percolator] [2018-02-04T17:27:54,539][INFO ][o.e.p.PluginsService ] [HcAbRrt] loaded module [reindex] [2018-02-04T17:27:54,539][INFO ][o.e.p.PluginsService ] [HcAbRrt] loaded module [repository-url] [2018-02-04T17:27:54,539][INFO ][o.e.p.PluginsService ] [HcAbRrt] loaded module [transport-netty4] [2018-02-04T17:27:54,539][INFO ][o.e.p.PluginsService ] [HcAbRrt] loaded module [tribe] [2018-02-04T17:27:54,540][INFO ][o.e.p.PluginsService ] [HcAbRrt] no plugins loaded [2018-02-04T17:27:59,914][INFO ][o.e.d.DiscoveryModule ] [HcAbRrt] using discovery type [zen] [2018-02-04T17:28:01,155][INFO ][o.e.n.Node ] initialized [2018-02-04T17:28:01,155][INFO ][o.e.n.Node ] [HcAbRrt] starting ... [2018-02-04T17:28:02,013][INFO ][o.e.t.TransportService ] [HcAbRrt] publish_address {127.0.0.1:9300}, bound_addresses {[fe80::1]:9300}, {[::1]:9300}, {127.0.0.1:9300} [2018-02-04T17:28:05,130][INFO ][o.e.c.s.MasterService ] [HcAbRrt] zen-disco-elected-as-master ([0] nodes joined), reason: new_master {HcAbRrt}{HcAbRrt4RVqvazgkI-W18Q}{sLMjeORSTb-oR3nm1ZFjNQ}{127.0.0.1}{127.0.0.1:9300} [2018-02-04T17:28:05,144][INFO ][o.e.c.s.ClusterApplierService] [HcAbRrt] new_master {HcAbRrt}{HcAbRrt4RVqvazgkI-W18Q}{sLMjeORSTb-oR3nm1ZFjNQ}{127.0.0.1}{127.0.0.1:9300}, reason: apply cluster state (from master [master {HcAbRrt}{HcAbRrt4RVqvazgkI-W18Q}{sLMjeORSTb-oR3nm1ZFjNQ}{127.0.0.1}{127.0.0.1:9300} committed version [1] source [zen-disco-elected-as-master ([0] nodes joined)]]) [2018-02-04T17:28:05,203][INFO ][o.e.h.n.Netty4HttpServerTransport] [HcAbRrt] publish_address {127.0.0.1:9200}, bound_addresses {[fe80::1]:9200}, {[::1]:9200}, {127.0.0.1:9200} [2018-02-04T17:28:05,203][INFO ][o.e.n.Node ] [HcAbRrt] started [2018-02-04T17:28:05,207][INFO ][o.e.g.GatewayService ] [HcAbRrt] recovered [0] indices into cluster_state
启动成功！
4、在浏览器请求 127.0.0.1:9200
{ "name" : "HcAbRrt", "cluster_name" : "elasticsearch", "cluster_uuid" : "saU-coKOQpW20NJKg_zzfA", "version" : { "number" : "6.1.0", "build_hash" : "c0c1ba0", "build_date" : "2017-12-12T12:32:54.550Z", "build_snapshot" : false, "lucene_version" : "7.1.0", "minimum_wire_compatibility_version" : "5.6.0", "minimum_index_compatibility_version" : "5.0.0" }, "tagline" : "You Know, for Search" }
