在centos7上安装ES

0 参考博客文章(感谢!!!)

 

1.安装jdk

1.1 执行命令下面命令查看可安装java版本
yum -y list java*
1.2 选择一个java版本进行安装,
yum install -y java-1.8.0-openjdk-devel.x86_64

这里有个地方要注意,要选择 要带有-devel的安装,因为这个安装的是jdk,而那个不带-devel的安装完了其实是jre。

1.3 输入java -version查看已安装的jdk版本,当出现如下输出表示安装成功。
1.4 jdk 的安装目录
/usr/lib/jvm 
1.5 配置环境变量,编辑/etc/profile文件:

vi /etc/profile

1.6 在文件尾部添加如下配置:
export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.181-3.b13.el6_10.x86_64
export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin

1.7 :wq退出vim编辑器,然后使用命令更新配置
source /etc/profile

 

2. 安装ES

2.1 依次执行命令
wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.3.2.zip
wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.3.2.zip.sha512
shasum -a 512 -c elasticsearch-6.3.2.zip.sha512
unzip elasticsearch-6.3.2.zip
cd elasticsearch-6.3.2/
遇到错误1
-bash: shasum: command not found
解决方案:在CentOS上,“shasum”被称为“sha1sum”,运行下面命令修复此问题
ln -s /usr/bin/sha1sum /usr/bin/shasum
遇到错误2
sha1sum: invalid option -- 'a'
解决方案:
yum install -y perl-Digest-SHA
遇到报错3
OpenJDK 64-Bit Server VM warning: If the number of processors is expected to increase from one, then you should configure the number of parallel GC threads appropriately using -XX:ParallelGCThreads=N
OpenJDK 64-Bit Server VM warning: INFO: os::commit_memory(0x00000000c5330000, 986513408, 0) failed; error='Cannot allocate memory' (errno=12)
解决方案:调小启动内存,如果512m还是不行的话,就得要再往下调了
[root@iZwz9ahuk6xeihs1n3gqy5Z elasticsearch-6.3.2]# vi config/jvm.options

#-Xms2g
#-Xmx2g
-Xms512m
-Xmx512m
遇到报错4:无法以root权限启动
org.elasticsearch.bootstrap.StartupException: java.lang.RuntimeException: can not run elasticsearch as root
解决方案:创建一个非root用户并赋予目录该用户权限,再启动
#root身份
groupadd es
useradd es -g es -p es
chown es:es ${elasticsearch_HOME}/ #存放elasticsearch的目录
su - es  #切换到es用户下
${elasticsearch_HOME}/bin/elasticsearch #启动elasticsearch
遇到报错5
ERROR: [4] bootstrap checks failed
[1]: max file descriptors [65535] for elasticsearch process is too low, increase to at least [65536]
[2]: max number of threads [1024] for user [e] is too low, increase to at least [4096]
[3]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
[4]: system call filters failed to install; check the logs and fix your configuration or disable system call filters at your own risk
解决方案:

【5.1】【5.2】

#root身份
vi /etc/security/limits.conf  
#文件末尾添加内容(*也是要加上去)
* soft nofile 65536  
* hard nofile 131072  
* soft nproc 4096  
* hard nproc 4096  

【5.3】

#root身份
sysctl -w vm.max_map_count=262144
   vim /etc/sysctl.conf     #让配置永久生效
#文件末尾添加内容
vm.max_map_count=262144

【5.4】

Centos6不支持SecComp,而ES6默认bootstrap.system_call_filter为true

vim config/elasticsearch.yml 

禁用:在elasticsearch.yml中配置bootstrap.system_call_filter为false,注意要在Memory下面: 取消bootstrap.memory_lock的注释,添加bootstrap.system_call_filter 配置

#注意在":"后面需要空格
bootstrap.memory_lock: false  
bootstrap.system_call_filter: false

 

0 参考博客文章(感谢!!!)

 

1.安装jdk

1.1 执行命令下面命令查看可安装java版本
yum -y list java*
1.2 选择一个java版本进行安装,
yum install -y java-1.8.0-openjdk-devel.x86_64

这里有个地方要注意,要选择 要带有-devel的安装,因为这个安装的是jdk,而那个不带-devel的安装完了其实是jre。

1.3 输入java -version查看已安装的jdk版本,当出现如下输出表示安装成功。
1.4 jdk 的安装目录
/usr/lib/jvm 
1.5 配置环境变量,编辑/etc/profile文件:

vi /etc/profile

1.6 在文件尾部添加如下配置:
export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.181-3.b13.el6_10.x86_64
export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin

1.7 :wq退出vim编辑器,然后使用命令更新配置
source /etc/profile

 

2. 安装ES

2.1 依次执行命令
wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.3.2.zip
wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.3.2.zip.sha512
shasum -a 512 -c elasticsearch-6.3.2.zip.sha512
unzip elasticsearch-6.3.2.zip
cd elasticsearch-6.3.2/
遇到错误1
-bash: shasum: command not found
解决方案:在CentOS上,“shasum”被称为“sha1sum”,运行下面命令修复此问题
ln -s /usr/bin/sha1sum /usr/bin/shasum
遇到错误2
sha1sum: invalid option -- 'a'
解决方案:
yum install -y perl-Digest-SHA
遇到报错3
OpenJDK 64-Bit Server VM warning: If the number of processors is expected to increase from one, then you should configure the number of parallel GC threads appropriately using -XX:ParallelGCThreads=N
OpenJDK 64-Bit Server VM warning: INFO: os::commit_memory(0x00000000c5330000, 986513408, 0) failed; error='Cannot allocate memory' (errno=12)
解决方案:调小启动内存,如果512m还是不行的话,就得要再往下调了
[root@iZwz9ahuk6xeihs1n3gqy5Z elasticsearch-6.3.2]# vi config/jvm.options

#-Xms2g
#-Xmx2g
-Xms512m
-Xmx512m
遇到报错4:无法以root权限启动
org.elasticsearch.bootstrap.StartupException: java.lang.RuntimeException: can not run elasticsearch as root
解决方案:创建一个非root用户并赋予目录该用户权限,再启动
#root身份
groupadd es
useradd es -g es -p es
chown es:es ${elasticsearch_HOME}/ #存放elasticsearch的目录
su - es  #切换到es用户下
${elasticsearch_HOME}/bin/elasticsearch #启动elasticsearch
遇到报错5
ERROR: [4] bootstrap checks failed
[1]: max file descriptors [65535] for elasticsearch process is too low, increase to at least [65536]
[2]: max number of threads [1024] for user [e] is too low, increase to at least [4096]
[3]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
[4]: system call filters failed to install; check the logs and fix your configuration or disable system call filters at your own risk
解决方案:

【5.1】【5.2】

#root身份
vi /etc/security/limits.conf  
#文件末尾添加内容(*也是要加上去)
* soft nofile 65536  
* hard nofile 131072  
* soft nproc 4096  
* hard nproc 4096  

【5.3】

#root身份
sysctl -w vm.max_map_count=262144
   vim /etc/sysctl.conf     #让配置永久生效
#文件末尾添加内容
vm.max_map_count=262144

【5.4】

Centos6不支持SecComp,而ES6默认bootstrap.system_call_filter为true

vim config/elasticsearch.yml 

禁用:在elasticsearch.yml中配置bootstrap.system_call_filter为false,注意要在Memory下面: 取消bootstrap.memory_lock的注释,添加bootstrap.system_call_filter 配置

#注意在":"后面需要空格
bootstrap.memory_lock: false  
bootstrap.system_call_filter: false

 

 

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转载自www.cnblogs.com/jj81/p/9404576.html