| elastic search 安装记录 |
| 1.es 需要普通用户来操作（如启动），包括 kibana 也是，需要创建一个普通用户，大致命令如下 |
| [root@localhost ~]# groupadd elasticsearch #添加用户组 |
| [root@localhost ~]# useradd esowner #添加用户 |
| [root@localhost ~]# passwd esowner #设置该用户密码 |
| [root@localhost ~]# mkdir ‐p /usr/local/es #用户存放 es 解压后的包 |
| [root@localhost ~]# usermod ‐G elasticsearch esowner #添加到用户组 |
| [root@localhost ~]# wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.6.1-linux-x86_64.tar.gz #下载 |
| [root@localhost ~]# tar -zxvf elasticsearch-7.6.1-linux-x86_64.tar.gz #加压 |
| [root@localhost ~]# chown ‐R esowner /usr/local/es/elasticsearch‐7.6.1 #授权 |
| [root@localhost ~]# visudo #在 root ALL=(ALL) ALL 一行下面添加 esowner ALL=(ALL) ALL |
| [root@localhost ~]# su esowner #切换普通用户 |
| [root@localhost ~]# whoami #检测 |
| |
| |
| [root@localhost ~]# cd /usr/local/es/elasticsearch‐7.6.1/config |
| [root@localhost ~]# mkdir ‐p /usr/local/es/elasticsearch‐7.6.1/log #存日志 |
| [root@localhost ~]# mkdir ‐p /usr/local/es/elasticsearch‐7.6.1/data #存 kibana 数据 |
| [root@localhost ~]# mkdir ‐p /usr/local/es/elasticsearch‐7.6.1/tmp #jvm 临时数据 |
| |
| |
| [root@localhost ~]# vi elasticsearch.yml #打开下面配置项，默认是注释掉的，服务器 IP 写当前 ip 即可 |
| cluster.name: cluster.name: my-application |
| node.name: node-1 |
| path.data: /usr/local/es/elasticsearch‐7.6.1/data |
| path.logs: /usr/local/es/elasticsearch‐7.6.1/log |
| network.host: 0.0.0.0 |
| http.port: 9200 |
| discovery.seed_hosts: ["服务器 IP"] |
| cluster.initial_master_nodes: ["服务器 IP"] |
| bootstrap.system_call_filter: false |
| bootstrap.memory_lock: false |
| http.cors.enabled: true |
| http.cors.allow‐origin: "*" |
| [root@localhost ~]# vi jvm.options |
| -Xms2g #默认 1g 则调为 2g |
| -Xmx2g #默认 1g 则调为 2g |
| |
| 8-13:-XX:+UseG1GC #默认 gc 为 8-13:-XX:+UseConcMarkSweepGC，改为 8-13:-XX:+UseG1GC |
| |
| -Djava.io.tmpdir=/usr/local/es/elasticsearch-7.6.1/tmp #避免普通用户访问 /tmp 出现权限问题 |
| -Djna.tmpdir=/usr/local/es/elasticsearch-7.6.1/tmp #避免普通用户访问 /tmp 出现权限问题 |
| [root@localhost ~]# vi bin/elasticsearch-env # 是用自带 jdk 这里可以改下 |
| # now set the path to java |
| #if [ ! -z "$JAVA_HOME" ]; then |
| # JAVA="$JAVA_HOME/bin/java" |
| # JAVA_TYPE="JAVA_HOME" |
| #else |
| if [ "$(uname -s)" = "Darwin" ]; then |
| # macOS has a different structure |
| JAVA="$ES_HOME/jdk.app/Contents/Home/bin/java" |
| else |
| JAVA="$ES_HOME/jdk/bin/java" |
| fi |
| JAVA_TYPE="bundled jdk" |
| #fi |
| [root@localhost ~]# chown ‐R esowner:esowner /usr/local/es/elasticsearch-7.6.1 #再次授权，避免启动时权限问题 |
| [root@localhost ~]# /usr/local/es/elasticsearch-7.6.1/bin/elasticsearch #启动 es |
| |
| |
| [root@localhost ~]# wget https://artifacts.elastic.co/downloads/kibana/kibana-7.6.1-linux-x86_64.tar.gz |
| [root@localhost ~]# tar -zxvf kibana-7.6.1-linux-x86_64.tar.gz |
| [root@localhost ~]# vi kibana.yml |
| server.port: 5601 |
| server.host: "服务器 IP" # 0.0.0.0 |
| elasticsearch.hosts: ["http://IP:9200"] #这里是 elasticsearch 的访问地址 |
| [root@localhost ~]# /usr/local/es/kibana-7.6.1-linux-x86_64/bin/kibana #启动 kibana |
| |
| |
| 参考图灵学院白起老师的文档（有几项针对普通用户的限制，可以拓展一下）： |
| 1.max file descriptors [4096] for elasticsearch process likely too low, increase to at least [65536] |
| [root@localhost ~]# sudo vi /etc/security/limits.conf #添加下面内容，注意带 * 号 |
| * soft nofile 65536 |
| * hard nofile 65536 |
| 2.max number of threads [1024] for user [es] likely too low, increase to at least [4096] |
| [root@localhost ~]# sudo vi /etc/security/limits.d/20‐nproc.conf #centos6 是 90‐nproc.conf |
| * soft nproc 1024# 修改为 |
| * soft nproc 4096 |
| 3.max virtual memory areas vm.max_map_count [65530] likely too low, increase to at least [262144] |
| [root@localhost ~]# sudo vi /etc/sysctl.conf |
| vm.max_map_count=655360 #结尾添加一行 |
| |
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| |
| 问题： |
| 1.windows 安装 es7.10.2，python 安装 elasticsearch7.10.1 后，执行 example usage（https://elasticsearch-py.readthedocs.io/en/v7.10.1/）后 |
| 再次创建 index 会报超时问题，即便修改 request_timeout 的值为 5min 也不行，就是无法创建 index，但是可以查询，比如输入 |
| http://localhost:9200/test-index/_doc/1 |
| |
| 2.OpenJDK 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release. |
| 参考：https://blog.csdn.net/xiaoxiong_web/article/details/105597150 |
| 解决：修改 config/jvm.options，将 gc 配置由 8-13:-XX:+UseConcMarkSweepGC 改为 8-13:-XX:+UseG1GC |
| |
| 3.es7 依赖 jdk11，使用自带 jdk |
| 参考：https://blog.csdn.net/xiaoxiong_web/article/details/105597150 |
| 解决：修改 bin/elasticsearch-env 文件，找到文件钟 JAVA="$JAVA_HOME/bin/java"，修改一下指向或只保留下面 else 里语句 |
| |
| 4.java.lang.IllegalArgumentException: unknown setting [http.cors.allow‐origin] did you mean [http.cors.allow-origin]? |
| 解决：这个很奇怪，可能是复制过去有些问题吧，将 do you mean 后面的复制过去就好了 |
| |
| 5.java.lang.UnsatisfiedLinkError: /tmp/elasticsearch-14795050142464540793/jna-3506402/jna8067215868334079374.tmp: /tmp/elasticsearch-14795050142464540793/jna-3506402/jna8067215868334079374.tmp: failed to map segment from shared object: Operation not permitted |
| 参考：https://blog.csdn.net/u013066244/article/details/78698340 |
| 修改：创建 /usr/local/es/elasticsearch-7.6.1/tmp，编辑 config/jvm.options |
| -Djava.io.tmpdir=/usr/local/es/elasticsearch-7.6.1/tmp |
| -Djna.tmpdir=/usr/local/es/elasticsearch-7.6.1/tmp |
| |
| 6.java.nio.file.AccessDeniedException: /usr/local/es/elasticsearch-7.6.1/config/elasticsearch.keystore |
| 参考：https://blog.csdn.net/chengyuqiang/article/details/89845051 |
| 执行：sudo chown -R esowner:esowner elasticsearch.keystore |
| 或者直接从 es 根目录重新授权 |
