don't run elasticsearch as root

don't run elasticsearch as root异常。显然这是提示

不能使用root用户直接运行，可以通过使用普通用户登录。

[root@localhost bin]# ./elasticsearch

Exception in thread "main" java.lang.RuntimeException: don't run elasticsearch as root.

        at org.elasticsearch.bootstrap.Bootstrap.initializeNatives(Bootstrap.java:93)

        at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:144)

        at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:285)

        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:35)

Refer to the log for complete error details.

[root@localhost bin]# ./elasticsearch -d

[root@localhost bin]# Exception in thread "main" java.lang.RuntimeException: don't run elasticsearch as root.

        at org.elasticsearch.bootstrap.Bootstrap.initializeNatives(Bootstrap.java:93)

        at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:144)

        at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:285)

        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:35)

Refer to the log for complete error details.

然而普通用户执行ElasticSearch，也提示权限不够错误

[wang@localhost bin]$ elasticsearch 

log4j:ERROR setFile(null,true) call failed.

java.io.FileNotFoundException: /usr/local/elasticsearch/logs/elasticsearch.log (权限不够)

        at java.io.FileOutputStream.open(Native Method)

        at java.io.FileOutputStream.<init>(FileOutputStream.java:221)

        at java.io.FileOutputStream.<init>(FileOutputStream.java:142)

        at org.apache.log4j.FileAppender.setFile(FileAppender.java:294)

        at org.apache.log4j.FileAppender.activateOptions(FileAppender.java:165)

        at org.apache.log4j.DailyRollingFileAppender.activateOptions(DailyRollingFileAppender.java:223)

        at org.apache.log4j.config.PropertySetter.activate(PropertySetter.java:307)

        at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:172)

        at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:104)

        at org.apache.log4j.PropertyConfigurator.parseAppender(PropertyConfigurator.java:842)

        at org.apache.log4j.PropertyConfigurator.parseCategory(PropertyConfigurator.java:768)

        at org.apache.log4j.PropertyConfigurator.configureRootCategory(PropertyConfigurator.java:648)

        at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:514)

        at org.apache.log4j.PropertyConfigurator.configure(PropertyConfigurator.java:440)

        at org.elasticsearch.common.logging.log4j.LogConfigurator.configure(LogConfigurator.java:128)

        at org.elasticsearch.bootstrap.Bootstrap.setupLogging(Bootstrap.java:204)

        at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:258)

        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:35)

log4j:ERROR Either File or DatePattern options are not set for appender [file].

log4j:ERROR setFile(null,true) call failed.

java.io.FileNotFoundException: /usr/local/elasticsearch/logs/elasticsearch_deprecation.log (权限不够)

        at java.io.FileOutputStream.open(Native Method)

        at java.io.FileOutputStream.<init>(FileOutputStream.java:221)

        at java.io.FileOutputStream.<init>(FileOutputStream.java:142)

        at org.apache.log4j.FileAppender.setFile(FileAppender.java:294)

        at org.apache.log4j.FileAppender.activateOptions(FileAppender.java:165)

        at org.apache.log4j.DailyRollingFileAppender.activateOptions(DailyRollingFileAppender.java:223)

        at org.apache.log4j.config.PropertySetter.activate(PropertySetter.java:307)

        at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:172)

        at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:104)

        at org.apache.log4j.PropertyConfigurator.parseAppender(PropertyConfigurator.java:842)

        at org.apache.log4j.PropertyConfigurator.parseCategory(PropertyConfigurator.java:768)

        at org.apache.log4j.PropertyConfigurator.parseCatsAndRenderers(PropertyConfigurator.java:672)

        at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:516)

        at org.apache.log4j.PropertyConfigurator.configure(PropertyConfigurator.java:440)

        at org.elasticsearch.common.logging.log4j.LogConfigurator.configure(LogConfigurator.java:128)

        at org.elasticsearch.bootstrap.Bootstrap.setupLogging(Bootstrap.java:204)

        at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:258)

        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:35)

log4j:ERROR Either File or DatePattern options are not set for appender [deprecation_log_file].

log4j:ERROR setFile(null,true) call failed.

java.io.FileNotFoundException: /usr/local/elasticsearch/logs/elasticsearch_index_indexing_slowlog.log (权限不够)

        at java.io.FileOutputStream.open(Native Method)

        at java.io.FileOutputStream.<init>(FileOutputStream.java:221)

        at java.io.FileOutputStream.<init>(FileOutputStream.java:142)

        at org.apache.log4j.FileAppender.setFile(FileAppender.java:294)

        at org.apache.log4j.FileAppender.activateOptions(FileAppender.java:165)

        at org.apache.log4j.DailyRollingFileAppender.activateOptions(DailyRollingFileAppender.java:223)

        at org.apache.log4j.config.PropertySetter.activate(PropertySetter.java:307)

        at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:172)

        at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:104)

        at org.apache.log4j.PropertyConfigurator.parseAppender(PropertyConfigurator.java:842)

        at org.apache.log4j.PropertyConfigurator.parseCategory(PropertyConfigurator.java:768)

        at org.apache.log4j.PropertyConfigurator.parseCatsAndRenderers(PropertyConfigurator.java:672)

        at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:516)

        at org.apache.log4j.PropertyConfigurator.configure(PropertyConfigurator.java:440)

        at org.elasticsearch.common.logging.log4j.LogConfigurator.configure(LogConfigurator.java:128)

        at org.elasticsearch.bootstrap.Bootstrap.setupLogging(Bootstrap.java:204)

        at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:258)

        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:35)

log4j:ERROR Either File or DatePattern options are not set for appender [index_indexing_slow_log_file].

log4j:ERROR setFile(null,true) call failed.

java.io.FileNotFoundException: /usr/local/elasticsearch/logs/elasticsearch_index_search_slowlog.log (权限不够)

        at java.io.FileOutputStream.open(Native Method)

        at java.io.FileOutputStream.<init>(FileOutputStream.java:221)

        at java.io.FileOutputStream.<init>(FileOutputStream.java:142)

        at org.apache.log4j.FileAppender.setFile(FileAppender.java:294)

        at org.apache.log4j.FileAppender.activateOptions(FileAppender.java:165)

        at org.apache.log4j.DailyRollingFileAppender.activateOptions(DailyRollingFileAppender.java:223)

        at org.apache.log4j.config.PropertySetter.activate(PropertySetter.java:307)

        at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:172)

        at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:104)

        at org.apache.log4j.PropertyConfigurator.parseAppender(PropertyConfigurator.java:842)

        at org.apache.log4j.PropertyConfigurator.parseCategory(PropertyConfigurator.java:768)

        at org.apache.log4j.PropertyConfigurator.parseCatsAndRenderers(PropertyConfigurator.java:672)

        at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:516)

        at org.apache.log4j.PropertyConfigurator.configure(PropertyConfigurator.java:440)

        at org.elasticsearch.common.logging.log4j.LogConfigurator.configure(LogConfigurator.java:128)

        at org.elasticsearch.bootstrap.Bootstrap.setupLogging(Bootstrap.java:204)

        at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:258)

        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:35)

log4j:ERROR Either File or DatePattern options are not set for appender [index_search_slow_log_file].

[2016-01-18 18:23:19,197][WARN ][bootstrap                ] unable to install syscall filter: seccomp unavailable: CONFIG_SECCOMP not compiled into kernel, CONFIG_SECCOMP and CONFIG_SECCOMP_FILTER are needed

Exception in thread "main" java.lang.IllegalStateException: Unable to access 'path.plugins' (/usr/local/elasticsearch/plugins)

Likely root cause: java.nio.file.AccessDeniedException: /usr/local/elasticsearch/plugins

        at sun.nio.fs.UnixException.translateToIOException(UnixException.java:84)

        at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)

        at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)

        at sun.nio.fs.UnixFileSystemProvider.createDirectory(UnixFileSystemProvider.java:383)

        at java.nio.file.Files.createDirectory(Files.java:630)

        at java.nio.file.Files.createAndCheckIsDirectory(Files.java:734)

        at java.nio.file.Files.createDirectories(Files.java:720)

        at org.elasticsearch.bootstrap.Security.ensureDirectoryExists(Security.java:250)

        at org.elasticsearch.bootstrap.Security.addPath(Security.java:227)

        at org.elasticsearch.bootstrap.Security.addFilePermissions(Security.java:193)

        at org.elasticsearch.bootstrap.Security.createPermissions(Security.java:184)

        at org.elasticsearch.bootstrap.Security.configure(Security.java:105)

        at org.elasticsearch.bootstrap.Bootstrap.setupSecurity(Bootstrap.java:196)

        at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:167)

        at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:285)

        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:35)

Refer to the log for complete error details.

解决方法:将/usr/local/elasticseach/ 所属用户和组改为另外一个非root账户

改完后结果:

[wang@localhost elasticsearch]$ bin/elasticsearch 

[2016-01-18 18:27:37,079][WARN ][bootstrap                ] unable to install syscall filter: seccomp unavailable: CONFIG_SECCOMP not compiled into kernel, CONFIG_SECCOMP and CONFIG_SECCOMP_FILTER are needed

[2016-01-18 18:27:37,600][INFO ][node                     ] [Sleek] version[2.1.1], pid[3779], build[40e2c53/2015-12-15T13:05:55Z]

[2016-01-18 18:27:37,600][INFO ][node                     ] [Sleek] initializing ...

[2016-01-18 18:27:37,837][INFO ][plugins                  ] [Sleek] loaded [], sites []

[2016-01-18 18:27:37,896][INFO ][env                      ] [Sleek] using [1] data paths, mounts [[/ (/dev/sda2)]], net usable_space [7.9gb], net total_space [17.3gb], spins? [possibly], types [ext4]

[2016-01-18 18:27:41,596][INFO ][node                     ] [Sleek] initialized

[2016-01-18 18:27:41,600][INFO ][node                     ] [Sleek] starting ...

[2016-01-18 18:27:41,731][INFO ][transport                ] [Sleek] publish_address {127.0.0.1:9300}, bound_addresses {127.0.0.1:9300}, {[::1]:9300}

[2016-01-18 18:27:41,745][INFO ][discovery                ] [Sleek] elasticsearch/ZgMsODaTRyqRJ1qm50IkAA

[2016-01-18 18:27:44,854][INFO ][cluster.service          ] [Sleek] new_master {Sleek}{ZgMsODaTRyqRJ1qm50IkAA}{127.0.0.1}{127.0.0.1:9300}, reason: zen-disco-join(elected_as_master, [0] joins received)

[2016-01-18 18:27:44,879][INFO ][http                     ] [Sleek] publish_address {127.0.0.1:9200}, bound_addresses {127.0.0.1:9200}, {[::1]:9200}

[2016-01-18 18:27:44,879][INFO ][node                     ] [Sleek] started

[2016-01-18 18:27:44,994][INFO ][gateway                  ] [Sleek] recovered [0] indices into cluster_st