Loki + Promtail + Grafana安装部署以及采集日志

CentOS/RedHat 系列一、使用Docker Compose 安装1、新建一个项目目录并进入该目录[rootprometheus ~]# mkdir loki [rootprometheus ~]# cd loki2、安装docker# 1. 卸载旧版本如果有 yum remove -y docker docker-client docker-client-latest docker-common docker-latest docker-latest-logrotate docker-logrotate docker-engine # 2. 安装依赖工具 yum install -y yum-utils device-mapper-persistent-data lvm2 # 3. 添加 Docker 官方 YUM 源用国内镜像加速 yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo # 4. 安装 Docker yum install -y docker-ce docker-ce-cli containerd.io docker-compose-plugin # 5. 启动 Docker 服务 systemctl start docker systemctl enable docker # 6. 验证安装 docker --version3、配置docker加速器​​​​​​​[rootprometheus loki]# cat /etc/docker/daemon.json { exec-opts: [ native.cgroupdriversystemd ], registry-mirrors: [ https://docker.1ms.run, https://docker.m.daocloud.io, https://docker.1panel.top ], live-restore: true, log-driver: json-file, log-opts: { max-size: 500m, max-file: 3 }, max-concurrent-downloads: 10, max-concurrent-uploads: 5 } [rootprometheus loki]#4、启动docker​​​​​​​systemctl daemon-reload systemctl start docker systemctl enable docker5、启动Loki​​​​​​​cd /root/loki docker compose up -d注意首次启动会拉取镜像6、查看容器状态docker compose ps我这里把默认的grafana的端口号改了7、访问 Grafana浏览器访问http://你的服务器IP:3000如果改了端口就用新端口默认账号密码admin/admin首次登录会提示修改密码。二、配置日志采集为了让 Promtail 采集日志我们需要创建一个配置文件。在/root/loki目录下新建promtail-config.yamlpromtail-config.yaml server: http_listen_port: 9080 grpc_listen_port: 0 positions: filename: /tmp/positions.yaml clients: - url: http://loki:3100/loki/api/v1/push scrape_configs: - job_name: system static_configs: - targets: [localhost] labels: job: system-logs host: prometheus __path__: /var/log/*.log - job_name: docker docker_sd_configs: - host: unix:///var/run/docker.sock refresh_interval: 10s relabel_configs: - source_labels: [__meta_docker_container_name] regex: /(.*) target_label: container - source_labels: [__meta_docker_container_log_stream] target_label: stream然后修改docker-compose.yaml找到promtail服务把volumes部分改成这样​​​​​​​- ./promtail-config.yaml:/etc/promtail/config.yml:ro # 新增挂载配置文件 - /var/run/docker.sock:/var/run/docker.sock # 可选用于采集 Docker 容器日志重启服务​​​​​​​docker compose down docker compose up -d1、登录 Grafana 添加 Loki 数据源2、添加Loki数据源到这里已经能采集到日志了后续配置日志告警功能。