nohup ./elasticsearch &  可以后台开启elasticsearch服务

ps-ef列出所有进程

ps-ef | grep elastic...查找elastic。。的进程

kill  进程数字（如：1932，对应java开头的进程）

例子如下：

login as: elasticsearch

elasticsearch@192.168.10.29‘s password:

Last login: Wed Sep 21 11:29:06 2016 from 172.16.42.225

[elasticsearch@centos29 ~]$ cd elasticsearch

[elasticsearch@centos29 elasticsearch]$ cd bin

[elasticsearch@centos29 bin]$ ps -ef | grep elas

root      1233  1646  0 10:26 ?        00:00:00 sshd: elasticsearch [priv]

500       1237  1233  0 10:26 ?        00:00:00 sshd: elasticsearch@pts/2

500       2468     1 23 11:30 ?        00:00:16 /usr/bin/java -Xms256m -Xmx1g -Djava.awt.headless=true -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=75 -XX:+UseCMSInitiatingOccupancyOnly -XX:+HeapDumpOnOutOfMemoryError -XX:+DisableExplicitGC -Dfile.encoding=UTF-8 -Djna.nosys=true -Des.path.home=/usr/elasticsearch/elasticsearch -cp /usr/elasticsearch/elasticsearch/lib/elasticsearch-2.1.1.jar:/usr/elasticsearch/elasticsearch/lib/* org.elasticsearch.bootstrap.Elasticsearch start

root      2567  1646  0 11:30 ?        00:00:00 sshd: elasticsearch [priv]

500       2572  2567  0 11:31 ?        00:00:00 sshd: elasticsearch@pts/0

500       2598  2573  0 11:31 pts/0    00:00:00 grep elas

[elasticsearch@centos29 bin]$ kill 2468

[elasticsearch@centos29 bin]$ nohup ./elasticsearch &

[1] 2608

[elasticsearch@centos29 bin]$ nohup: ignoring input and appending output to `nohup.out

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