DBA课程-day22-ELK第三天

昨天内容

索引优化
1.按照我们想要的效果生成索引
- 自定索引名称
- 按月生成
- 按域名和访问类型创建索引
- 能够索引日志里的每个字段内容

2.filebeat配置
- nginx日志修改为json
- filebeat添加模板相关选项
  setup.template.name: "nginx"
  setup.template.pattern: "nginx_*"
  setup.template.enabled: false
  setup.template.overwrite: true
- filebeat添加参数直接解析成json格式
  json.keys_under_root: true
  json.overwrite_keys: true
- filebeat的input添加tags标签
  tags: ["www"]
- filebeat的output里判断tags
  - index: "nginx_www_access-%{[beat.version]}-%{+yyyy.MM}"
      when.contains:
        tags: "www"

3.收集tomcat日志
- 安装tomcat并访问,产生数据
- 修改tomcat日志为json格式,139行替换
- 验证tomcat日志是否为json了
- filebeat配置一模一样
-- 要使用*来匹配tomcat每天生成的日志
   - type: log
   enabled: true 
   paths:
    - /var/log/tomcat/localhost_access_log.*.txt
   json.keys_under_root: true
   json.overwrite_keys: true
   tags: ["tomcat"]

4.收集java多行日志
- filebeat配置java日志路径
- 添加3行多行匹配的参数
  - type: log
    enabled: true 
    paths:
      - /var/log/elasticsearch/linux58.log
    tags: ["java"]
    multiline.pattern: '^\['
    multiline.negate: true
    multiline.match: after

5.kibana画图展示
- 柱状图,饼图,仪表图,折线图,Data Table,markdown
- Dashboard大屏实时展示
- 查询时间要注意,查询条件对面板也是生效的
- 画完记得保存
- 别把es里的.kibana给删了

ELK介绍

ELk filebeat modules
filebeat是go语言编写
- 快,不依赖于java环境

配置步骤:

1.配置相关modules参数
filebeat.config.modules:
  path: ${path.config}/modules.d/*.yml
  reload.enabled: true
  reload.period: 10s
2.查看模块
filebeat modules list
3.激活模块
[root@db01 ~]# filebeat modules enable nginx
Enabled nginx
4.修改nginx为普通日志格式
5.修改filebeat配置文件
不足的地方:
1.错误日志和正确日志都混在一起了
2.不能按域名生成索引

################################################################

filebeat modules 自定义索引和视图:

1.为了不影响实验,建议删除所有其他的索引
systemctl stop elasticsearch
systemctl stop kibana
rm -rf /data/elasticsearch/*
rm -rf /var/lib/kibana/*
systemctl start elasticsearch
systemctl start kibana
2.修改nginx配置文件
sed -i 's#json#main#g' /etc/nginx/conf.d/bbs.conf
3.清空nginx日志
> /var/log/nginx/bbs_access.log
4.重启nginx
systemctl restart nginx
5.修改filebeat配置文件:
filebeat.config.modules:
  path: ${path.config}/modules.d/*.yml
  reload.enabled: true
setup.kibana:
  host: "10.0.0.51:5601"
output.elasticsearch:
  hosts: ["10.0.0.51:9200"]
  indices:
    - index: "nginx_bbs_access-%{[beat.version]}-%{+yyyy.MM}"
      when.contains:
        source: "/var/log/nginx/bbs_access.log"
    - index: "nginx_error-%{[beat.version]}-%{+yyyy.MM}"
      when.contains:
        fileset.name: "error"
setup.template.name: "nginx"
setup.template.pattern: "nginx_*"
setup.template.enabled: false
setup.template.overwrite: true
6.激活nginx模块报错
filebeat modules enable nginx
7.安装nginx modules插件
/usr/share/elasticsearch/bin/elasticsearch-plugin install file:///root/ingest-geoip-6.6.0.zip /usr/share/elasticsearch/bin/elasticsearch-plugin install file:///root/ingest-user-agent-6.6.0.zip 
8.重启es
systemctl restart elasticsearch
9.修改模块配置
[root@db01 ~]# egrep -v "#|^$" /etc/filebeat/modules.d/nginx.yml 
- module: nginx
  access:
    enabled: true
    var.paths: ["/var/log/nginx/bbs_access.log"]
  error:
    enabled: true
    var.paths: ["/var/log/nginx/error.log"]
10.备份删除不必要的视图文件并导入到kibana
cp -a /usr/share/filebeat/kibana /root
cd /usr/share/filebeat/kibana/6/dashboard
find . -type f ! -name "*nginx*"|xargs rm -rf
rm -rf  ml-nginx-*
sed -i 's#filebeat\-\*#nginx\_\*#g' Filebeat-nginx-logs.json 
sed -i 's#filebeat\-\*#nginx\_\*#g' Filebeat-nginx-overview.json
cd index-pattern/
sed -i 's#filebeat\-\*#nginx\_\*#g' filebeat.json
filebeat setup --dashboards -E setup.dashboards.directory=/root/kibana/
rm -rf /var/lib/kibana/*
systemctl restart kibana
#########################################################################

安装docker步骤

rm -fr /etc/yum.repos.d/local.repo
curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
wget -O /etc/yum.repos.d/docker-ce.repo https://mirrors.ustc.edu.cn/docker-ce/linux/centos/docker-ce.repo
sed -i 's#download.docker.com#mirrors.tuna.tsinghua.edu.cn/docker-ce#g' /etc/yum.repos.d/docker-ce.repo
yum install docker-ce -y
systemctl start docker
cat > /etc/docker/daemon.json <

下载镜像

docker pull nginx
docker run --name nginx -p 80:80 -d nginx
docker ps
docker logs -f nginx

镜像:模板

容器:以什么模板启动的微型linux

docker pull 镜像名:版本:拉去镜像
docker rmi  镜像名或id:删除镜像
docker images:获取本地已有镜像
docker run  镜像名或id:使用默认端口启动镜像
docker run -p port:port1 -d 镜像名或id:指定port端口映射到port1,并后台启动镜像

进入容器内部 docker exec -it nginx容器ID /bin/bash
docker ps:查看正在运行的docker容器
docker ps -a:查看所有执行过run命令的容器服务(包括已经停止的容器)
docker stop 容器id:停止某个容器
docker restart 容器id:重启某个容器
docker rm 容器Id:删除某个容器

docker exec -it nginx /bin/bash

[root@db03 ~]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
nginx               latest              f68d6e55e065        10 days ago         109MB

[root@db03 ~]# docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                NAMES
0fe1c72d0bcd        nginx               "nginx -g 'daemon of…"   3 hours ago         Up 3 hours          0.0.0.0:80->80/tcp   nginx

[root@db03 ~]# docker ps -a
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                NAMES
0fe1c72d0bcd        nginx               "nginx -g 'daemon of…"   3 hours ago         Up 3 hours          0.0.0.0:80->80/tcp   nginx

收集docker容器日志

1.生成多个容器
systemctl stop nginx 
docker stop $(docker ps -q)
docker rm $(docker ps -aq)
docker run --name nginx -p 80:80 -d nginx
docker commit nginx nginx:v2
docker run --name mysql -p 8080:80 -d nginx:v2
docker images
docker ps 
docker logs -f nginx
docker logs -f mysql
2.修改filebeat配置文件
filebeat.inputs:
- type: docker
  containers.ids: 
    - '*'
filebeat.config.modules:
  path: ${path.config}/modules.d/*.yml
  reload.enabled: false 
setup.kibana:
  host: "10.0.0.51:5601"
output.elasticsearch:
  hosts: ["10.0.0.51:9200"]
  index: "docker-nginx-%{[beat.version]}-%{+yyyy.MM}"
setup.template.name: "docker"
setup.template.pattern: "docker-*"
setup.template.enabled: false
setup.template.overwrite: true
3.重启filebeat
systemctl restart filebeat

原始的docker容器日志
{
    "log": "2019/07/12 07:58:46 [error] 6#6: *3 open() \"/usr/share/nginx/html/lalalala\" failed (2: No such file or directory), client: 10.0.0.1, server: localhost, request: \"GET /lalalala HTTP/1.1\", host: \"10.0.0.53\"\n",
    "stream": "stderr",
    "time": "2019-07-12T07:58:46.805441064Z"
}

增加lable之后的日志
{
    "log": "10.0.0.1 - - [12/Jul/2019:08:52:59 +0000] \"GET / HTTP/1.1\" 304 0 \"-\" \"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.100 Safari/537.36\" \"-\"\n",
    "stream": "stdout",
    "attrs": {
        "service": "mysql"
    },
    "time": "2019-07-12T08:52:59.944284567Z"
}

配置步骤:

按服务类型拆分docker容器日志

1.安装docker-compose
yum install -y python2-pip
2.这里使用pip安装,默认源为国外,可以使用国内加速,相关网站
https://mirrors.tuna.tsinghua.edu.cn/help/pypi/
pip加速操作命令
pip install -i https://pypi.tuna.tsinghua.edu.cn/simple pip -U
pip config set global.index-url https://pypi.tuna.tsinghua.edu.cn/simple
3.继续安装docker-compose
pip install docker-compose
4.检查版本
docker-compose version
5.创建docker-compose配置文件
[root@db03 ~]# cat docker-compose.yml 
version: '3'
services:
  nginx:
    image: nginx:latest
    #设置labels
    labels:
      service: nginx
    #logging设置增加labels.service
    logging:
      options:
        labels: "service"
    ports:
      - "80:80"
  mysql:
    image: nginx:v2
    #设置labels
    labels:
      service: mysql
    #logging设置增加labels.service
    logging:
      options:
        labels: "service"
    ports:
      - "8080:80"
6.使用docker-compose启动docker
docker stop $(docker ps -q)
docker rm $(docker ps -aq)
docker-compose up -d
docker ps 
7.修改filebeat配置文件
filebeat.inputs:
- type: log 
  enabled: true 
  paths:
    - /var/lib/docker/containers/*/*-json.log
  json.keys_under_root: true
  json.overwrite_keys: true
setup.kibana:
  host: "10.0.0.51:5601"
output.elasticsearch:
  hosts: ["10.0.0.51:9200"]
  indices:
    - index: "docker-nginx-access-%{[beat.version]}-%{+yyyy.MM}"
      when.contains:
        attrs.service: "nginx"
        stream: "stdout"
    - index: "docker-nginx-error-%{[beat.version]}-%{+yyyy.MM}"
      when.contains:
        attrs.service: "nginx"
        stream: "stderr"
    - index: "docker-mysql-access-%{[beat.version]}-%{+yyyy.MM}"
      when.contains:
        attrs.service: "mysql"
        stream: "stdout"
    - index: "docker-mysql-error-%{[beat.version]}-%{+yyyy.MM}"
      when.contains:
        attrs.service: "mysql"
        stream: "stderr"

setup.template.name: "docker"
setup.template.pattern: "docker-*"
setup.template.enabled: false
setup.template.overwrite: true    
filebeat配置
filebeat.inputs:
- type: log
  enabled: true 
  paths:
    - /var/log/nginx/bbs_access.log
  json.keys_under_root: true
  json.overwrite_keys: true
  tags: ["bbs"]
- type: log
  enabled: true 
  paths:
    - /var/log/nginx/www_access.log
  json.keys_under_root: true
  json.overwrite_keys: true
  tags: ["www"]
setup.kibana:
  host: "10.0.0.51:5601"
output.redis:
  hosts: ["localhost"]
  keys:
    - key: "bbs"
      when.contains:
        tags: "bbs"
    - key: "www"
      when.contains:
        tags: "www"
  db: 0
  timeout: 5

setup.template.name: "nginx"
setup.template.pattern: "nginx-*"
setup.template.enabled: false
setup.template.overwrite: true
redis查看命令
redis-cli 
keys *
llen bbs
llen www
logstash配置
[root@db01 /data/soft]# cat /etc/logstash/conf.d/redis.conf 
input {
  redis {
    host => "127.0.0.1"
    port => "6379"
    db => "0"
    key => "bbs"
    data_type => "list"
  }

  redis {
    host => "127.0.0.1"
    port => "6379"
    db => "0"
    key => "www"
    data_type => "list"
  }
}
#filter {
#  mutate {
#    convert => ["upstream_time", "float"]
#    convert => ["request_time", "float"]
#  }
#}

output {
    if "bbs" in [tags] {
      stdout {} 
      elasticsearch {
        hosts => "http://10.0.0.51:9200"
        manage_template => false
        index => "nginx-bbs-%{+yyyy.MM}"
      }
    }
   
    if "www" in [tags] {
      stdout {} 
      elasticsearch {
        hosts => "http://10.0.0.51:9200"
        manage_template => false
        index => "nginx-www-%{+yyyy.MM}"
      }
    }
}
logstash启动命令
/usr/share/logstash/bin/logstash -f /etc/logstash/conf.d/redis.conf
报错记录1
[root@db03 ~]# docker run --name nginx -p 80:80 -d nginx
docker: Error response from daemon: Conflict. The container name "/nginx" is already in use by container "0fe1c72d0bcdc9296d540f6b5aded9861407d81732b3063f615e279d293c5573". You have to remove (or rename) that container to be able to reuse that name.
See 'docker run --help'.
报错记录2
Error response from daemon: driver failed programming external connectivity on endpoint nginx (dc4f838af1cd2f79ee9b422ea0bb2a2c3f1831c86ba6ed60d298ca266b2cc7ef): Error starting userland proxy: listen tcp 0.0.0.0:80: bind: address already in use
Error: failed to start containers: nginx
报错记录3
[root@db03 ~]# docker rm $(docker ps -q)
Error response from daemon: You cannot remove a running container 9bab465e57c3fe165367595472b61bdd64e4b84010ef5a7f54757b5946a23d09. Stop the container before attempting removal or force remove
Error response from daemon: You cannot remove a running container 0fe1c72d0bcdc9296d540f6b5aded9861407d81732b3063f615e279d293c5573. Stop the container before attempting removal or force remove
filebeat modules报错1
现象:
执行filebeat modules list提示参数没有配置
[root@db01 ~]# filebeat modules list
Error in modules manager: modules management requires 'filebeat.config.modules.path' setting

原因:
配置文件里没有配置相关参数,导致找不到modules路径

解决:
filebeat.config.modules:
  path: ${path.config}/modules.d/*.yml
  reload.enabled: true
  reload.period: 10s
filebeat modules报错2:
现象:激活nginx模块报错
2019-07-12T09:22:06.599+0800    ERROR   fileset/factory.go:142  Error loading pipeline: Error loading pipeline for fileset nginx/access: This module requires the following Elasticsearch plugins: ingest-user-agent, ingest-geoip. You can install them by running the following commands on all the Elasticsearch nodes:
    sudo bin/elasticsearch-plugin install ingest-user-agent
    sudo bin/elasticsearch-plugin install ingest-geoip

#注意!!!放在root下!!!
/usr/share/elasticsearch/bin/elasticsearch-plugin install file:///root/ingest-geoip-6.6.0.zip 
/usr/share/elasticsearch/bin/elasticsearch-plugin install file:///root/ingest-user-agent-6.6.0.zip 
filebeat modules报错3:
filebeat setup -e
2019-07-12T09:41:32.833+0800    ERROR   instance/beat.go:911    Exiting: fail to create the Kibana loader: Error creating Kibana client: Error creating Kibana client: fail to get the Kibana version: HTTP GET request to /api/status fails: fail to execute the HTTP GET request: Get http://localhost:5601/api/status: dial tcp 127.0.0.1:5601: connect: connection refused. Response: .
Exiting: fail to create the Kibana loader: Error creating Kibana client: Error creating Kibana client: fail to get the Kibana version: HTTP GET request to /api/status fails: fail to execute the HTTP GET request: Get http://localhost:5601/api/status: dial tcp 127.0.0.1:5601: connect: connection refused. Response: .

原因:
filebeat配置文件里没有配置kibana相关参数,导致使用默认的localhost:5601

解决:filebeat添加相关配置
setup.kibana:
  host: "10.0.0.51:5601"
安装docker-compose报错1
ERROR: Cannot uninstall 'requests'. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.

解决方法:
pip install --ignore-installed requests

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