yum -y list java*
yum install -y java-1.8.0-openjdk-devel.x86_64
這裏有個地方要注意,要選擇 要帶有-devel的安裝,由於這個安裝的是jdk,而那個不帶-devel的安裝完了實際上是jre。html
java -version
查看已安裝的jdk版本,當出現以下輸出表示安裝成功。 /usr/lib/jvm
vi /etc/profile
java
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
:wq
退出vim編輯器,而後使用命令更新配置 source /etc/profile
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/
-bash: shasum: command not found
ln -s /usr/bin/sha1sum /usr/bin/shasum
sha1sum: invalid option -- 'a'
yum install -y perl-Digest-SHA
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)
[root@iZwz9ahuk6xeihs1n3gqy5Z elasticsearch-6.3.2]# vi config/jvm.options
#-Xms2g
#-Xmx2g
-Xms512m
-Xmx512m
org.elasticsearch.bootstrap.StartupException: java.lang.RuntimeException: can not run elasticsearch as root
#root身份
groupadd es
useradd es -g es -p es
chown es:es ${elasticsearch_HOME}/ #存放elasticsearch的目錄
su - es #切換到es用戶下
${elasticsearch_HOME}/bin/elasticsearch #啓動elasticsearch
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
【5.1】【5.2】linux
#root身份
vi /etc/security/limits.conf
#文件末尾添加內容(*也是要加上去)
* soft nofile 65536
* hard nofile 131072
* soft nproc 4096
* hard nproc 4096
【5.3】git
#root身份
sysctl -w vm.max_map_count=262144
vim /etc/sysctl.conf #讓配置永久生效
#文件末尾添加內容
vm.max_map_count=262144
【5.4】github
Centos6不支持SecComp,而ES6默認bootstrap.system_call_filter爲trueweb
vim config/elasticsearch.yml
禁用:在elasticsearch.yml中配置bootstrap.system_call_filter爲false,注意要在Memory下面: 取消bootstrap.memory_lock的註釋,添加bootstrap.system_call_filter 配置bootstrap
#注意在":"後面須要空格
bootstrap.memory_lock: false
bootstrap.system_call_filter: false