centos7部署loki实战文档-CFANZ编程社区

介绍：Loki 由以下3个部分组成：

loki是主服务器，负责存储日志和处理查询。 promtail是代理，负责收集日志并将其发送给 loki 。 Grafana用于 UI 展示。

一、promtail 部署下载地址：https://github.com/grafana/loki/releases/download/v2.5.0/promtail-linux-amd64.zip

1、解压，下载官方配置模板并修改

mkdir /data/promtail
unzip promtail-linux-amd64.zip
wget https://raw.githubusercontent.com/grafana/loki/main/clients/cmd/promtail/promtail-local-config.yaml

vim promtail-local-config.yaml

server:
  http_listen_port: 9080
  grpc_listen_port: 0

positions:
  filename: /tmp/positions.yaml

clients:
  - url: http://192.156.71.125:3100/loki/api/v1/push	## 此处lokiserver修改为服务器端地址

scrape_configs:
- job_name: application			# job名称，自定义
  static_configs:
  - targets:					# 如测试环境多个应用多个路径，从此行开始复制修改对应的标签
      - localhost
    labels:
      job: tomcat				# 定义检索的名称
      project: tjhlwjg			# 项目名称自定义
      host: 192.156.71.125		# 建议修改为本机ip，方便过滤      
      __path__: /data/tomcat_tjjg/logs/catalina.out		# tomcat日志路径

2、启动promtail

cd /data/promtail
nohup ./promtail-linux-amd64 --config.file=promtail.yaml &

二、loki 部署下载地址：https://github.com/grafana/loki/releases/download/v2.5.0/loki-linux-amd64.zip

1、解压，下载官方配置模板并修改

mkdir /data/loki
unzip loki-linux-amd64
wget https://raw.githubusercontent.com/grafana/loki/master/cmd/loki/loki-local-config.yaml

vim loki-local-config.yaml # 这里不需要alertmanager，注释掉

auth_enabled: false

server:
  http_listen_port: 3100
  grpc_listen_port: 9096

common:
  path_prefix: /tmp/loki
  storage:
    filesystem:
      chunks_directory: /tmp/loki/chunks
      rules_directory: /tmp/loki/rules
  replication_factor: 1
  ring:
    instance_addr: 127.0.0.1
    kvstore:
      store: inmemory

schema_config:
  configs:
    - from: 2020-10-24
      store: boltdb-shipper
      object_store: filesystem
      schema: v11
      index:
        prefix: index_
        period: 24h

# ruler:
#   alertmanager_url: http://localhost:9093

# 下面的配置为新增的，不配置日志太大会报错
limits_config:
  enforce_metric_name: false
  reject_old_samples: true
  reject_old_samples_max_age: 168h
  ingestion_rate_mb: 30  #修改每用户摄入速率限制，即每秒样本量，默认值为4M
  ingestion_burst_size_mb: 15  #修改每用户摄入速率限制，即每秒样本量，默认值为6M

grfana面板出图有问题加的如下配置

limits_config:
   reject_old_samples: true
   reject_old_samples_max_age: 168h
   retention_period: 360h
   max_query_series: 100000
   max_query_parallelism: 2

2、启动loki

cd /data/loki
nohup ./loki-linux-amd64 --config.file=loki.yaml &

三、配置grafana

1、添加loki数据源

2、输入loki服务器的ip和端口（3100）、其他默认，然后Save&Test

3、在Explore中选择loki，可以根据自定义的标签进行过滤

4、loki的日志页面如下

nginx 日志格式

log_format json_analytics escape=json '{'
                            '"msec": "$msec", ' # request unixtime in seconds with a milliseconds resolution
                            '"connection": "$connection", ' # connection serial number
                            '"connection_requests": "$connection_requests", ' # number of requests made in connection
                    '"pid": "$pid", ' # process pid
                    '"request_id": "$request_id", ' # the unique request id
                    '"request_length": "$request_length", ' # request length (including headers and body)
                    '"remote_addr": "$remote_addr", ' # client IP
                    '"remote_user": "$remote_user", ' # client HTTP username
                    '"remote_port": "$remote_port", ' # client port
                    '"time_local": "$time_local", '
                    '"time_iso8601": "$time_iso8601", ' # local time in the ISO 8601 standard format
                    '"request": "$request", ' # full path no arguments if the request
                    '"request_uri": "$request_uri", ' # full path and arguments if the request
                    '"args": "$args", ' # args
                    '"status": "$status", ' # response status code
                    '"body_bytes_sent": "$body_bytes_sent", ' # the number of body bytes exclude headers sent to a client
                    '"bytes_sent": "$bytes_sent", ' # the number of bytes sent to a client
                    '"http_referer": "$http_referer", ' # HTTP referer
                    '"http_user_agent": "$http_user_agent", ' # user agent
                    '"http_x_forwarded_for": "$http_x_forwarded_for", ' # http_x_forwarded_for
                    '"http_host": "$http_host", ' # the request Host: header
                    '"server_name": "$server_name", ' # the name of the vhost serving the request
                    '"request_time": "$request_time", ' # request processing time in seconds with msec resolution
                    '"upstream": "$upstream_addr", ' # upstream backend server for proxied requests
                    '"upstream_connect_time": "$upstream_connect_time", ' # upstream handshake time incl. TLS
                    '"upstream_header_time": "$upstream_header_time", ' # time spent receiving upstream headers
                    '"upstream_response_time": "$upstream_response_time", ' # time spend receiving upstream body
                    '"upstream_response_length": "$upstream_response_length", ' # upstream response length
                    '"upstream_cache_status": "$upstream_cache_status", ' # cache HIT/MISS where applicable
                    '"ssl_protocol": "$ssl_protocol", ' # TLS protocol
                    '"ssl_cipher": "$ssl_cipher", ' # TLS cipher
                    '"scheme": "$scheme", ' # http or https
                    '"request_method": "$request_method", ' # request method
                    '"server_protocol": "$server_protocol", ' # request protocol, like HTTP/1.1 or HTTP/2.0
                    '"pipe": "$pipe", ' # "p" if request was pipelined, "." otherwise
                    '"gzip_ratio": "$gzip_ratio", '
                    '"http_cf_ray": "$http_cf_ray",'
                    '"geoip_country_code": "$geoip_country_code"'
                    '}';

--with-http_geoip_module 这个模块需要单独编译 tengjin自带