{"id":51,"date":"2025-04-05T18:27:27","date_gmt":"2025-04-05T16:27:27","guid":{"rendered":"https:\/\/jaber.altabaa.fr\/?p=51"},"modified":"2025-04-05T19:21:05","modified_gmt":"2025-04-05T17:21:05","slug":"decouvrez-grafana-loki-un-systeme-dagregation-de-journaux-pour-tout","status":"publish","type":"post","link":"https:\/\/jaber.altabaa.fr\/index.php\/2025\/04\/05\/decouvrez-grafana-loki-un-systeme-dagregation-de-journaux-pour-tout\/","title":{"rendered":"D\u00e9couvrez Grafana LOKI, un syst\u00e8me d\u2019agr\u00e9gation de journaux pour tout"},"content":{"rendered":"

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Je suis en qu\u00eate d\u2019un nouveau syst\u00e8me de journalisation. J\u2019en ai utilis\u00e9 pas mal dans le pass\u00e9, certains open source, certains propri\u00e9taires et certains d\u00e9velopp\u00e9s en interne, mais r\u00e9cemment j\u2019ai d\u00e9cid\u00e9 de changer.Je suis pass\u00e9 \u00e0\u00a0Grafana Loki<\/strong>\u00a0pour tous mes journaux pour tous mes syst\u00e8mes \u2013 cela inclut les machines, les appareils, les syst\u00e8mes Docker et les h\u00f4tes, et tous mes clusters Kubernetes.
\nSi vous envisagez d\u2019utiliser Grafana et que vous recherchez \u00e9galement un moyen rapide de consigner tous vos syst\u00e8mes, rejoignez-moi pendant que nous discutons et configurons Grafana Loki.Vous ne souhaitez pas l\u2019h\u00e9berger vous-m\u00eame ? D\u00e9couvrez\u00a0Grafana Cloud<\/strong>\u00a0et cr\u00e9ez un compte gratuit.<\/p>\n
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\ud83d\udd27 Configuration de Docker<\/h2>\n

Consultez cet article sur la fa\u00e7on d\u2019installer\u00a0docker<\/code>\u00a0et\u00a0docker-compose<\/code><\/p>\n

\ud83d\udce6 Ex\u00e9cution du conteneur (avec Docker Compose)<\/h3>\n
mkdir<\/span> grafana\r\nmkdir<\/span> loki\r\nmkdir<\/span> promtail\r\ntouch<\/span> docker-compose.yml\r\nnano<\/span> docker-compose.yml # copier le contenu ci-dessous<\/span>\r\nls<\/span>\r\ndocker-compose<\/span> up -d<\/span> --force-recreate # assurez-vous d\u2019avoir cr\u00e9\u00e9 promtail-config.yml et loki-config.yml avant<\/span>\r\n<\/code><\/pre>\n
\ud83d\udee0\ufe0f docker-compose.yml<\/h3>\n
version<\/span>:<\/span> \"3\"<\/span>\r\nnetworks<\/span>:<\/span>\r\n  loki<\/span>:<\/span>\r\nservices<\/span>:<\/span>\r\n  loki<\/span>:<\/span>\r\n    image<\/span>:<\/span> grafana\/loki:<\/span>2.4.0\r\n    volumes<\/span>:<\/span>\r\n      -<\/span> \/home\/serveradmin\/docker_volumes\/loki:<\/span>\/etc\/loki\r\n    ports<\/span>:<\/span>\r\n      -<\/span> \"3100:3100\"<\/span>\r\n    restart<\/span>:<\/span> unless-<\/span>stopped\r\n    command<\/span>:<\/span> -<\/span>config.file=\/etc\/loki\/loki-<\/span>config.yml\r\n    networks<\/span>:<\/span>\r\n      -<\/span> loki\r\n\r\n  promtail<\/span>:<\/span>\r\n    image<\/span>:<\/span> grafana\/promtail:<\/span>2.4.0\r\n    volumes<\/span>:<\/span>\r\n      -<\/span> \/var\/log:<\/span>\/var\/log\r\n      -<\/span> \/home\/serveradmin\/docker_volumes\/promtail:<\/span>\/etc\/promtail\r\n    restart<\/span>:<\/span> unless-<\/span>stopped\r\n    command<\/span>:<\/span> -<\/span>config.file=\/etc\/promtail\/promtail-<\/span>config.yml\r\n    networks<\/span>:<\/span>\r\n      -<\/span> loki\r\n\r\n  grafana<\/span>:<\/span>\r\n    image<\/span>:<\/span> grafana\/grafana:<\/span>latest\r\n    user<\/span>:<\/span> \"1000\"<\/span>\r\n    volumes<\/span>:<\/span>\r\n      -<\/span> \/home\/serveradmin\/docker_volumes\/grafana:<\/span>\/var\/lib\/grafana\r\n    ports<\/span>:<\/span>\r\n      -<\/span> \"3000:3000\"<\/span>\r\n    restart<\/span>:<\/span> unless-<\/span>stopped\r\n    networks<\/span>:<\/span>\r\n      -<\/span> loki\r\n<\/code><\/pre>\n
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\u2699\ufe0f Configuration de Loki<\/h2>\n
nano<\/span> loki\/loki-config.yml\r\n<\/code><\/pre>\n
loki-config.yml<\/h3>\n
auth_enabled<\/span>:<\/span> false<\/span>\r\n\r\nserver<\/span>:<\/span>\r\n  http_listen_port<\/span>:<\/span> 3100<\/span>\r\n  grpc_listen_port<\/span>:<\/span> 9096<\/span>\r\n\r\ncommon<\/span>:<\/span>\r\n  path_prefix<\/span>:<\/span> \/tmp\/loki\r\n  storage<\/span>:<\/span>\r\n    filesystem<\/span>:<\/span>\r\n      chunks_directory<\/span>:<\/span> \/tmp\/loki\/chunks\r\n      rules_directory<\/span>:<\/span> \/tmp\/loki\/rules\r\n  replication_factor<\/span>:<\/span> 1<\/span>\r\n  ring<\/span>:<\/span>\r\n    instance_addr<\/span>:<\/span> 127.0.0.1\r\n    kvstore<\/span>:<\/span>\r\n      store<\/span>:<\/span> inmemory\r\n\r\nschema_config<\/span>:<\/span>\r\n  configs<\/span>:<\/span>\r\n    -<\/span> from<\/span>:<\/span> 2020-10-24<\/span>\r\n      store<\/span>:<\/span> boltdb-<\/span>shipper\r\n      object_store<\/span>:<\/span> filesystem\r\n      schema<\/span>:<\/span> v11\r\n      index<\/span>:<\/span>\r\n        prefix<\/span>:<\/span> index_\r\n        period<\/span>:<\/span> 24h\r\n\r\nruler<\/span>:<\/span>\r\n  alertmanager_url<\/span>:<\/span> http:<\/span>\/\/localhost:<\/span>9093<\/span>\r\n<\/code><\/pre>\n
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\u2699\ufe0f Configuration de Promtail<\/h2>\n
nano<\/span> promtail\/promtail-config.yml\r\n<\/code><\/pre>\n
promtail-config.yml<\/h3>\n
server<\/span>:<\/span>\r\n  http_listen_port<\/span>:<\/span> 9080<\/span>\r\n  grpc_listen_port<\/span>:<\/span> 0<\/span>\r\n\r\npositions<\/span>:<\/span>\r\n  filename<\/span>:<\/span> \/tmp\/positions.yaml\r\n\r\nclients<\/span>:<\/span>\r\n  -<\/span> url<\/span>:<\/span> http:<\/span>\/\/loki:<\/span>3100\/loki\/api\/v1\/push\r\n\r\nscrape_configs<\/span>:<\/span>\r\n\r\n# local machine logs<\/span>\r\n-<\/span> job_name<\/span>:<\/span> local\r\n  static_configs<\/span>:<\/span>\r\n  -<\/span> targets<\/span>:<\/span>\r\n      -<\/span> localhost\r\n    labels<\/span>:<\/span>\r\n      job<\/span>:<\/span> varlogs\r\n      __path__<\/span>:<\/span> \/var\/log\/*log<\/span>\r\n\r\n# docker logs<\/span>\r\n#- job_name: docker <\/span>\r\n#  pipeline_stages:<\/span>\r\n#    - docker: {}<\/span>\r\n#  static_configs:<\/span>\r\n#    - labels:<\/span>\r\n#        job: docker<\/span>\r\n#        __path__: \/var\/lib\/docker\/containers\/*\/*-json.log<\/span>\r\n\r\n# syslog target<\/span>\r\n#- job_name: syslog<\/span>\r\n#  syslog:<\/span>\r\n#    listen_address: 0.0.0.0:1514<\/span>\r\n#    idle_timeout: 60s<\/span>\r\n#    label_structured_data: yes<\/span>\r\n#    labels:<\/span>\r\n#      job: \"syslog\"<\/span>\r\n#  relabel_configs:<\/span>\r\n#    - source_labels: ['__syslog_message_hostname']<\/span>\r\n#      target_label: 'host'<\/span>\r\n<\/code><\/pre>\n
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\ud83d\udd0c Pilote Docker Loki<\/h2>\n
Installer le plugin :<\/h3>\n
docker<\/span> plugin install<\/span> grafana\/loki-docker-driver:latest --alias<\/span> loki --grant-all-permissions\r\n<\/code><\/pre>\n
Modifier la configuration du d\u00e9mon Docker :<\/h3>\n
sudo<\/span> nano<\/span> \/etc\/docker\/daemon.json\r\n<\/code><\/pre>\n
daemon.json :<\/h4>\n
{<\/span>\r\n  \"log-driver\"<\/span>:<\/span> \"loki\"<\/span>,<\/span>\r\n  \"log-opts\"<\/span>:<\/span> {<\/span>\r\n    \"loki-url\"<\/span>:<\/span> \"http:\/\/localhost:3100\/loki\/api\/v1\/push\"<\/span>,<\/span>\r\n    \"loki-batch-size\"<\/span>:<\/span> \"400\"<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
Red\u00e9marrer Docker :<\/h3>\n
sudo<\/span> systemctl restart docker<\/span>\r\n<\/code><\/pre>\n
\u26a0\ufe0f Vous devrez \u00e9galement\u00a0recr\u00e9er vos conteneurs<\/strong>\u00a0apr\u00e8s cette modification.<\/p>\n
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\ud83d\udd0e Exemples de requ\u00eates LogQL<\/h2>\n