Docker安装ElasticSearch-CFANZ编程社区

下载ElasticSearch镜像

下载镜像,大概500多M,需要耐心等待.

docker pull elasticsearch:5.6.8

下载完了查看下镜像

[root@zjj101 ~]# docker images

REPOSITORY              TAG                 IMAGE ID            CREATED             SIZE
springbootdemo4docker   latest              e2c24e317572        2 months ago        676MB
elasticsearch           5.6.8               6c0bdf761f3b        2 years ago         570MB

启动ElasticSearch

注意!,ElasticSearch启动需要很大内存,如果你用的机器内存不够的话,可能会启动失败,先给这个帖子看完,再去操作ElasticSearch.

docker run -di --name=zjj_elasticsearch -p 9200:9200 -p 9300:9300 elasticsearch:5.6.8

上面这个命令启动的时候可能会启动失败,因为可能你机器内存不够.如果内存不够的话,用下面的命令指定堆内存来启动.

重点是 -e ES_JAVA_OPTS="-Xms256m -Xmx256m" 参数

-Xms是最小堆大小

-Xmx是最大堆大小

docker run -e ES_JAVA_OPTS="-Xms256m -Xmx256m" -di --name=zjjElasticSearch -p9200:9200 -p9300:9300 elasticsearch:5.6.8

查看容器

[root@zjj101 ~]# docker ps -a
CONTAINER ID        IMAGE                 COMMAND                  CREATED              STATUS                          PORTS                                        NAMES
030fced83e42        elasticsearch:5.6.8   "/docker-entrypoint.…"   About a minute ago   Exited (1) About a minute ago                                                zjj_elasticsearch

发现ElasticSearch 的status有问题.是Exited(1) 说明没正常启动成功,如果你的status为 Up XXX seconds 那么就说明启动成功了,帖子后面的内容就可以不看了.

启动失败错误解决

查看日志

命令: docker logs zjj_elasticsearch

[root@zjj101 containers]# docker logs  zjj_elasticsearch
OpenJDK 64-Bit Server VM warning: INFO: os::commit_memory(0x0000000085330000, 2060255232, 0) failed; error='Cannot allocate memory' (errno=12)
#
# There is insufficient memory for the Java Runtime Environment to continue.
# Native memory allocation (mmap) failed to map 2060255232 bytes for committing reserved memory.
# An error report file with more information is saved as:
# /tmp/hs_err_pid1.log
[root@zjj101 containers]#

意思是Java运行时环境的内存不足，无法继续运行。

停止并且删除掉原来的容器

停止并删除容器

[root@zjj101 ~]# docker stop zjj_elasticsearch
zjj_elasticsearch
[root@zjj101 ~]# docker rm zjj_elasticsearch
zjj_elasticsearch

指定VM参数并且重新启动容器

重点是 -e ES_JAVA_OPTS="-Xms256m -Xmx256m" 参数

-Xms是最小堆大小

-Xmx是最大堆大小

docker run -e ES_JAVA_OPTS="-Xms256m -Xmx256m" -di --name=zjjElasticSearch -p9200:9200 -p9300:9300 elasticsearch:5.6.8

查看是否启动成功

[root@zjj101 /]# docker ps -a
CONTAINER ID        IMAGE                 COMMAND                  CREATED             STATUS                     PORTS                                            NAMES
3ef6fdea7877        elasticsearch:5.6.8   "/docker-entrypoint.…"   3 seconds ago       Up 3 seconds               0.0.0.0:9200->9200/tcp, 0.0.0.0:9300->9300/tcp   zjjElasticSearch

status为up 说明启动成功了.

浏览器访问 http://zjj101:9200/ 就能看到内容了. 说明启动成功了.