问题
docker安装并启动elasticsearch时内存不足
系统centos8（阿里云ecs服务器）
[root@iZ2zeczvvb79boy368xppwZ ~]# cat /etc/redhat-release
CentOS Linux release 8.1.1911 (Core)
安装过程
docker pull elasticsearch:6.4.0
修改虚拟机内存（貌似没有效果）
sysctl -w vm.max_map_count=262144
使用docker run命令跑容器
docker run -p 9200:9200 -p 9300:9300 --name elasticsearch \
-e "discovery.type=single-node" \
-e "cluster.name=elasticsearch" \
-v /mydata/elasticsearch/plugins:/usr/share/elasticsearch/plugins \
-v /mydata/elasticsearch/data:/usr/share/elasticsearch/data \
-d elasticsearch:6.4.0
docker ps查看容器并没有启动
[root@iZ2zeczvvb79boy368xppwZ ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
edfc400862eb rabbitmq:3.7.15 "docker-entrypoint.s…" 14 hours ago Up 14 hours 0.0.0.0:4369->4369/tcp, 0.0.0.0:5671-5672->5671-5672/tcp, 0.0.0.0:15671-15672->15671-15672/tcp, 0.0.0.0:25672->25672/tcp rabbitmq
2ae2f3f8dc1f nginx:1.10 "nginx -g 'daemon of…" 2 weeks ago Up 2 weeks 0.0.0.0:80->80/tcp, 443/tcp nginx
164e4e7561df redis:3.2 "docker-entrypoint.s…" 2 weeks ago Up 2 weeks 0.0.0.0:6379->6379/tcp redis
eeabe57f1f21 mysql:5.7 "docker-entrypoint.s…" 2 weeks ago Up 2 weeks 0.0.0.0:3306->3306/tcp, 33060/tcp mysql
docker ps -a 查看容器确实创建了
[root@iZ2zeczvvb79boy368xppwZ ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
767829ae1d7c elasticsearch:6.4.0 "/usr/local/bin/dock…" About a minute ago Exited (1) About a minute ago elasticsearch
edfc400862eb rabbitmq:3.7.15 "docker-entrypoint.s…" 14 hours ago Up 14 hours 0.0.0.0:4369->4369/tcp, 0.0.0.0:5671-5672->5671-5672/tcp, 0.0.0.0:15671-15672->15671-15672/tcp, 0.0.0.0:25672->25672/tcp rabbitmq
2ae2f3f8dc1f nginx:1.10 "nginx -g 'daemon of…" 2 weeks ago Up 2 weeks 0.0.0.0:80->80/tcp, 443/tcp nginx
164e4e7561df redis:3.2 "docker-entrypoint.s…" 2 weeks ago Up 2 weeks 0.0.0.0:6379->6379/tcp redis
eeabe57f1f21 mysql:5.7 "docker-entrypoint.s…" 2 weeks ago Up 2 weeks 0.0.0.0:3306->3306/tcp, 33060/tcp mysql
查看日志docker logs -f elasticsearch命令查看日志发现jvm内存不足
[root@iZ2zeczvvb79boy368xppwZ ~]# docker logs -f elasticsearch
OpenJDK 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
OpenJDK 64-Bit Server VM warning: INFO: os::commit_memory(0x00007ebf15330000, 549668585472, 0) failed; error='Not enough space' (errno=12)
#
# There is insufficient memory for the Java Runtime Environment to continue.
# Native memory allocation (mmap) failed to map 549668585472 bytes for committing reserved memory.
# An error report file with more information is saved as:
# logs/hs_err_pid1.log
解决方法
修改jvm.options文件配置
首先查找jvm.options文件位置（每个服务器的位置可能不同）
[root@iZ2zeczvvb79boy368xppwZ ~]# find / -name jvm.options
/var/lib/docker/overlay2/d399872a3517b4d4acb0d2f70d0625c0f38251ffe5819a1cea00f8213de3e7f5/diff/usr/share/elasticsearch/config/jvm.options
vim进入文件修改虚拟机最小内存
[root@iZ2zeczvvb79boy368xppwZ ~]# vim /var/lib/docker/overlay2/d399872a3517b4d4acb0d2f70d0625c0f38251ffe5819a1cea00f8213de3e7f5/diff/usr/share/elasticsearch/config/jvm.options
找到-Xms属性，修改成512m（我的elasticsearch:6.4.0默认为1g）
## JVM configuration
################################################################
## IMPORTANT: JVM heap size
################################################################
##
## You should always set the min and max JVM heap
## size to the same value. For example, to set
## the heap to 4 GB, set:
##
## -Xms4g
## -Xmx4g
##
## See https://www.elastic.co/guide/en/elasticsearch/reference/current/heap-size.html
## for more information
##
################################################################
# Xms represents the initial size of total heap space
# Xmx represents the maximum size of total heap space
-Xms512m
-Xmx512m
保存并退出
vim中按i进入编辑模式，按ESC退出编辑模式，按：进入命令模式，然后在底部命令行输入w为保存，q为退出，q!为强制退出。
再次启动容器，docker ps查看容器启动成功
[root@iZ2zeczvvb79boy368xppwZ ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
f5c4ed61196b elasticsearch:6.4.0 "/usr/local/bin/dock…" 15 minutes ago Up 15 minutes 0.0.0.0:9200->9200/tcp, 0.0.0.0:9300->9300/tcp elasticsearch
edfc400862eb rabbitmq:3.7.15 "docker-entrypoint.s…" 15 hours ago Up 15 hours 0.0.0.0:4369->4369/tcp, 0.0.0.0:5671-5672->5671-5672/tcp, 0.0.0.0:15671-15672->15671-15672/tcp, 0.0.0.0:25672->25672/tcp rabbitmq
2ae2f3f8dc1f nginx:1.10 "nginx -g 'daemon of…" 2 weeks ago Up 2 weeks 0.0.0.0:80->80/tcp, 443/tcp nginx
164e4e7561df redis:3.2 "docker-entrypoint.s…" 2 weeks ago Up 2 weeks 0.0.0.0:6379->6379/tcp redis
eeabe57f1f21 mysql:5.7 "docker-entrypoint.s…" 2 weeks ago Up 2 weeks 0.0.0.0:3306->3306/tcp, 33060/tcp mysql
总结
到此这篇关于docker启动elasticsearch时内存不足问题及解决方法的文章就介绍到这了,更多相关docker启动elasticsearch内存不足内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家！
