Linux学习-ELK(一)

配置三台elasticsearch服务器

安装包
elasticsearch.j2

报错

#---执行rsync命令报以下错误
[root@es1 ~]# rsync -av /etc/hosts 192.168.29.172:/etc/hosts
[email protected]'s password:
bash: rsync: 未找到命令
rsync: connection unexpectedly closed (0 bytes received so far) [sender]
rsync error: error in rsync protocol data stream (code 12) at io.c(226) [sender=3.1.3]

解决方法

== 同步双方机器都需要安装rsync==

机器环境：RockyLinux8.6
资源列表：es1,es2,es3,nfs-server
es1:192.168.29.171
es2:192.168.29.172
es3:192.168.29.173
nfs-server:192.168.29.139

#-----------------配置本地yum仓库
#------------搭建nfs-server

[root@harbor ~]# yum install -y nfs-utils
#查看nfs-server配置文件
[root@harbor ~]# cat /etc/exports
/var/ftp 192.168.29.0/24(rw,no_root_squash)
[root@harbor ~]# systemctl enable nfs-server --now
#------------搭建nfs-server
[root@harbor ftp]# createrepo --update /var/ftp/elk
Directory walk started
Directory walk done - 5 packages
Loaded information about 0 packages
Temporary output repo path: /var/ftp/elk/.repodata/
Preparing sqlite DBs
Pool started (with 5 workers)
Pool finished
[root@harbor ~]# ls /var/ftp/elk
elasticsearch-7.17.8-x86_64.rpm  kibana-7.17.8-x86_64.rpm    metricbeat-7.17.8-x86_64.rpm
filebeat-7.17.8-x86_64.rpm       logstash-7.17.8-x86_64.rpm  repodata
#-----------------配置本地yum仓库
#---------在三台机器上分别安装elasticsearch
#-----yum配置文件
[root@es1 ~]# cat /etc/yum.repos.d/extra.repo
[es]
name=Rocky Linux $releasever - es
#mirrorlist=https://mirrors.rockylinux.org/mirrorlist?arch=$basearch&repo=BaseOS-$releasever
baseurl=ftp://192.168.29.139/elk/
gpgcheck=0
enabled=1
countme=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-rockyofficial
[root@es1 ~]# dnf install -y elasticsearch
#集群名称
cluster.name: elk-cluster
#节点名称
node.name: es1
#监听地址
network.host: 0.0.0.0
#集群广播成员，用于设置Elasticsearch节点启动时去连接的种子节点列表，这有助于节点能够发现集群中的其他节点
discovery.seed_hosts: ["es1", "es2","es3"]
#集群创始人成员，用于指定集群启动时应该被选举为初始主节点的节点列表
cluster.initial_master_nodes: ["es1", "es2","es3"]
[root@es1 ~]# systemctl enable elasticsearch --now

[root@es1 ~]# curl 192.168.29.171:9200
{
  "name" : "es1",
  "cluster_name" : "elk-cluster",
  "cluster_uuid" : "_na_",
  "version" : {
    "number" : "7.17.8",
    "build_flavor" : "default",
    "build_type" : "rpm",
    "build_hash" : "120eabe1c8a0cb2ae87cffc109a5b65d213e9df1",
    "build_date" : "2022-12-02T17:33:09.727072865Z",
    "build_snapshot" : false,
    "lucene_version" : "8.11.1",
    "minimum_wire_compatibility_version" : "6.8.0",
    "minimum_index_compatibility_version" : "6.0.0-beta1"
  },
  "tagline" : "You Know, for Search"
}

使用Ansible批量部署ES

[root@harbor es]# cat ansible.cfg
[defaults]
inventory         = hostlist
host_key_checking = False

#elasticsearch.j2通过变量获取主机名称
node.name: {{ ansible_hostname }}

#部署es的playbook文件
[root@harbor es]# cat deployes.yaml
---
- name: deploy es
  hosts: es
  tasks:
  - name: 'set /etc/hosts'
    copy:
      dest: /etc/hosts
      owner: root
      group: root
      mode: 0644
      content: |
        127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
        ::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
        {% for i in groups.es %}
        {{ hostvars[i].ansible_ens160.ipv4.address }}{{ hostvars[i].ansible_hostname }}
        {% endfor %}
  - name: install es
    dnf:
      name: elasticsearch
      state: latest
      update_cache: yes
  - name: copy config file
    template:
      src: elasticsearch.j2
      dest: /etc/elasticsearch/elasticsearch.yml
      owner: root
      group: elasticsearch
      mode: 0600
  - name: update es service
    service:
      name: elasticsearch
      state: started
      enabled: yes
#主机列表文件
[root@harbor es]# cat hostlist
[web]
192.168.29.161
192.168.29.162
[es]
192.168.29.171
192.168.29.172
192.168.29.173
[root@harbor es]# ansible-playbook deployes.yaml
#部署完成后，查看集群状态

[root@el2 ~]# curl 192.168.29.172:9200/_cat/nodes?pretty
192.168.29.172 26 94  4 0.55 0.21 0.10 cdfhilmrstw * es2
192.168.29.171 12 93  4 0.09 0.11 0.08 cdfhilmrstw - es1
192.168.29.173  7 93 30 1.09 0.32 0.16 cdfhilmrstw - es3

部署插件页面

[root@es1 ~]# dnf install -y nginx
[root@es1 ~]# systemctl enable nginx --now
Created symlink /etc/systemd/system/multi-user.target.wants/nginx.service → /usr/lib/systemd/system/nginx.service.
[root@es1 ~]# tar xf head.tar.gz -C /usr/share/nginx/html/

认证和代理

[root@es1 conf.d]# cat /etc/nginx/default.d/es.conf
location ~* ^/es/(.*)$ {
        proxy_pass http://127.0.0.1:9200/$1;
        auth_basic "elastic admin";
        auth_basic_user_file /etc/nginx/auth-user;
}
[root@es1 conf.d]# dnf install -y httpd-tools
[root@es1 conf.d]# htpasswd -cm /etc/nginx/auth-user admin
[root@es1 conf.d]# systemctl restart nginx