Mise en place et debug d’Influxdb avec Collectd et Grafana

 

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L'un des grands avantages que les distributions Linux nous offrent est la possibilité d'étendre ses ressources et ses services. Grâce a l'open source, nous trouvons des milliers d'outils et d'options utiles.

Dans ce vaste monde d'options, nous avons choisi une stack qui est composé de trois utilitaires puissants :

  • Collectd
  • Influxdb
  • Grafana

L'objectif de l'article est d'apprendre à installer Inflxudb sur Debian 10 et de réaliser un retour d'expérience suite à un dysfonctionnement rencontré.

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Qu'est-ce que Grafana?

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Grafana est une plate-forme qui a été développée pour effectuer des tâches telles que la consultation, la visualisation, l'alerting et la compréhension des valeurs générées par le système. Quel que soit leur emplacement de stockage, car Grafana est en mesure d'accéder à ces données et de les implémenter en temps réel. Avec Grafana, nous pouvons créer, explorer et partager des panneaux avec plusieurs utilisateurs et ainsi nous parviendrons à une administration beaucoup plus centralisée. Pour plus d'informations je vous invite à lire l'article Grafana avec InfluxDB et Telegraf

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Collect quoi ?

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Collectd est un démon Unix qui collecte, transfère et stocke les données de performances des équipements physiques et des équipements réseau. Les données acquises sont destinées à aider les administrateurs système à maintenir une vue d'ensemble des ressources disponibles pour détecter les goulots d'étranglement existants ou imminents.

Pour l'installation rien de plus simple il suffit de faire un :

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Pour la configuration cela se passe dans /etc/collectd/collectd.conf. Vous trouverez en bas de l'article un exemple de configuration.  

Une fois la configuration terminé il suffit de redémarrer collectd.

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Qu'est-ce qu'InfluxDB?

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InfluxDB est une base de données open source (TSDB) développée par InfluxData. Il est écrit en Go et optimisé pour un stockage rapide et une disponibilité rapide des données de séries chronologiques dans des domaines tels que: la surveillance des opérations, les applications de mesure de différentes tailles, le stockage des données reçues des capteurs IoT et l'analyse en temps réel.
InfluxDB n'a pas de dépendance externes et permet d'interroger des objets à l'aide du langage SQL via le port 8086.

InfluxDB peut être facilement configuré à l'aide du fichier de configuration (influxdb.conf) et des variables d'environnement.

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1. Ajouter les sources

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2. Installation Influxdb

[/fusion_title][fusion_syntax_highlighter theme="oceanic-next" language="x-sh" line_numbers="" line_wrapping="" copy_to_clipboard="" copy_to_clipboard_text="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" font_size="" border_size="" border_color="" border_style="" background_color="" line_number_background_color="" line_number_text_color="" margin_top="" margin_right="" margin_bottom="" margin_left=""]c3VkbyBhcHQgdXBkYXRlCnN1ZG8gYXB0IGluc3RhbGwgLXkgaW5mbHV4ZGI=[/fusion_syntax_highlighter][/fusion_builder_column][/fusion_builder_row][/fusion_builder_container][fusion_builder_container hundred_percent="no" hundred_percent_height="no" hundred_percent_height_scroll="no" hundred_percent_height_center_content="yes" equal_height_columns="no" menu_anchor="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" status="published" publish_date="" class="" id="" link_color="" link_hover_color="" border_size="" border_color="" border_style="solid" margin_top="" margin_bottom="" padding_top="" padding_right="" padding_bottom="" padding_left="" gradient_start_color="" gradient_end_color="" gradient_start_position="0" gradient_end_position="100" gradient_type="linear" radial_direction="center center" linear_angle="180" background_color="" background_image="" background_position="center center" background_repeat="no-repeat" fade="no" background_parallax="none" enable_mobile="no" parallax_speed="0.3" background_blend_mode="none" video_mp4="" video_webm="" video_ogv="" video_url="" video_aspect_ratio="16:9" video_loop="yes" video_mute="yes" video_preview_image="" filter_hue="0" filter_saturation="100" filter_brightness="100" filter_contrast="100" filter_invert="0" filter_sepia="0" filter_opacity="100" filter_blur="0" filter_hue_hover="0" filter_saturation_hover="100" filter_brightness_hover="100" filter_contrast_hover="100" filter_invert_hover="0" filter_sepia_hover="0" filter_opacity_hover="100" filter_blur_hover="0"][fusion_builder_row][fusion_builder_column type="1_1" layout="1_1" spacing="" center_content="no" link="" target="_self" min_height="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" hover_type="none" border_size="0" border_color="" border_style="solid" border_position="all" border_radius="" box_shadow="no" dimension_box_shadow="" box_shadow_blur="0" box_shadow_spread="0" box_shadow_color="" box_shadow_style="" padding_top="" padding_right="" padding_bottom="" padding_left="" margin_top="" margin_bottom="" background_type="single" gradient_start_color="" gradient_end_color="" gradient_start_position="0" gradient_end_position="100" gradient_type="linear" radial_direction="center center" linear_angle="180" background_color="" background_image="" background_image_id="" background_position="left top" background_repeat="no-repeat" background_blend_mode="none" animation_type="" animation_direction="left" animation_speed="0.3" animation_offset="" filter_type="regular" filter_hue="0" filter_saturation="100" filter_brightness="100" filter_contrast="100" filter_invert="0" filter_sepia="0" filter_opacity="100" filter_blur="0" filter_hue_hover="0" filter_saturation_hover="100" filter_brightness_hover="100" filter_contrast_hover="100" filter_invert_hover="0" filter_sepia_hover="0" filter_opacity_hover="100" filter_blur_hover="0" last="no"][fusion_title title_type="text" rotation_effect="bounceIn" display_time="1200" highlight_effect="circle" loop_animation="off" highlight_width="9" highlight_top_margin="0" before_text="" rotation_text="" highlight_text="" after_text="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" content_align="left" size="5" font_size="" animated_font_size="" fusion_font_family_title_font="" fusion_font_subset_title_font="" fusion_font_variant_title_font="" line_height="" letter_spacing="" margin_top="" margin_bottom="" margin_top_mobile="" margin_bottom_mobile="" text_color="" animated_text_color="" highlight_color="" style_type="default" sep_color="" animation_type="" animation_direction="left" animation_speed="0.3" animation_offset=""]

3. Démarrez et activez le service au démarrage.

[/fusion_title][fusion_syntax_highlighter theme="oceanic-next" language="x-sh" line_numbers="" line_wrapping="" copy_to_clipboard="" copy_to_clipboard_text="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" font_size="" border_size="" border_color="" border_style="" background_color="" line_number_background_color="" line_number_text_color="" margin_top="" margin_right="" margin_bottom="" margin_left=""]c3VkbyBzeXN0ZW1jdGwgZW5hYmxlIC0tbm93IGluZmx1eGRi[/fusion_syntax_highlighter][/fusion_builder_column][/fusion_builder_row][/fusion_builder_container][fusion_builder_container hundred_percent="no" hundred_percent_height="no" hundred_percent_height_scroll="no" hundred_percent_height_center_content="yes" equal_height_columns="no" menu_anchor="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" status="published" publish_date="" class="" id="" link_color="" link_hover_color="" border_size="" border_color="" border_style="solid" margin_top="" margin_bottom="" padding_top="" padding_right="" padding_bottom="" padding_left="" gradient_start_color="" gradient_end_color="" gradient_start_position="0" gradient_end_position="100" gradient_type="linear" radial_direction="center center" linear_angle="180" background_color="" background_image="" background_position="center center" background_repeat="no-repeat" fade="no" background_parallax="none" enable_mobile="no" parallax_speed="0.3" background_blend_mode="none" video_mp4="" video_webm="" video_ogv="" video_url="" video_aspect_ratio="16:9" video_loop="yes" video_mute="yes" video_preview_image="" filter_hue="0" filter_saturation="100" filter_brightness="100" filter_contrast="100" filter_invert="0" filter_sepia="0" filter_opacity="100" filter_blur="0" filter_hue_hover="0" filter_saturation_hover="100" filter_brightness_hover="100" filter_contrast_hover="100" filter_invert_hover="0" filter_sepia_hover="0" filter_opacity_hover="100" filter_blur_hover="0"][fusion_builder_row][fusion_builder_column type="1_1" layout="1_1" spacing="" center_content="no" link="" target="_self" min_height="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" hover_type="none" border_size="0" border_color="" border_style="solid" border_position="all" border_radius="" box_shadow="no" dimension_box_shadow="" box_shadow_blur="0" box_shadow_spread="0" box_shadow_color="" box_shadow_style="" padding_top="" padding_right="" padding_bottom="" padding_left="" margin_top="" margin_bottom="" background_type="single" gradient_start_color="" gradient_end_color="" gradient_start_position="0" gradient_end_position="100" gradient_type="linear" radial_direction="center center" linear_angle="180" background_color="" background_image="" background_image_id="" background_position="left top" background_repeat="no-repeat" background_blend_mode="none" animation_type="" animation_direction="left" animation_speed="0.3" animation_offset="" filter_type="regular" filter_hue="0" filter_saturation="100" filter_brightness="100" filter_contrast="100" filter_invert="0" filter_sepia="0" filter_opacity="100" filter_blur="0" filter_hue_hover="0" filter_saturation_hover="100" filter_brightness_hover="100" filter_contrast_hover="100" filter_invert_hover="0" filter_sepia_hover="0" filter_opacity_hover="100" filter_blur_hover="0" last="no"][fusion_title title_type="text" rotation_effect="bounceIn" display_time="1200" highlight_effect="circle" loop_animation="off" highlight_width="9" highlight_top_margin="0" before_text="" rotation_text="" highlight_text="" after_text="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" content_align="left" size="5" font_size="" animated_font_size="" fusion_font_family_title_font="" fusion_font_subset_title_font="" fusion_font_variant_title_font="" line_height="" letter_spacing="" margin_top="" margin_bottom="" margin_top_mobile="" margin_bottom_mobile="" text_color="" animated_text_color="" highlight_color="" style_type="default" sep_color="" animation_type="" animation_direction="left" animation_speed="0.3" animation_offset=""]

4. Ouvrez les ports sur le firewall

[/fusion_title][fusion_text columns="" column_min_width="" column_spacing="" rule_style="default" rule_size="" rule_color="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" animation_type="" animation_direction="left" animation_speed="0.3" animation_offset=""]

Par défaut, InfluxDB utilise les ports réseau suivants:

  • Le port TCP 8086 est utilisé pour la communication client-serveur via l'API HTTP d'InfluxDB
  • Le port TCP 8088 est utilisé pour le service RPC pour la sauvegarde et la restauration
  • Si comme nous vous utilisez Collectd il faudra également ouvrir le port 25826

[/fusion_text][/fusion_builder_column][/fusion_builder_row][/fusion_builder_container][fusion_builder_container hundred_percent="no" hundred_percent_height="no" hundred_percent_height_scroll="no" hundred_percent_height_center_content="yes" equal_height_columns="no" menu_anchor="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" status="published" publish_date="" class="" id="" link_color="" link_hover_color="" border_size="" border_color="" border_style="solid" margin_top="" margin_bottom="" padding_top="" padding_right="" padding_bottom="" padding_left="" gradient_start_color="" gradient_end_color="" gradient_start_position="0" gradient_end_position="100" gradient_type="linear" radial_direction="center center" linear_angle="180" background_color="" background_image="" background_position="center center" background_repeat="no-repeat" fade="no" background_parallax="none" enable_mobile="no" parallax_speed="0.3" background_blend_mode="none" video_mp4="" video_webm="" video_ogv="" video_url="" video_aspect_ratio="16:9" video_loop="yes" video_mute="yes" video_preview_image="" filter_hue="0" filter_saturation="100" filter_brightness="100" filter_contrast="100" filter_invert="0" filter_sepia="0" filter_opacity="100" filter_blur="0" filter_hue_hover="0" filter_saturation_hover="100" filter_brightness_hover="100" filter_contrast_hover="100" filter_invert_hover="0" filter_sepia_hover="0" filter_opacity_hover="100" filter_blur_hover="0"][fusion_builder_row][fusion_builder_column type="1_1" layout="1_1" spacing="" center_content="no" link="" target="_self" min_height="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" hover_type="none" border_size="0" border_color="" border_style="solid" border_position="all" border_radius="" box_shadow="no" dimension_box_shadow="" box_shadow_blur="0" box_shadow_spread="0" box_shadow_color="" box_shadow_style="" padding_top="" padding_right="" padding_bottom="" padding_left="" margin_top="" margin_bottom="" background_type="single" gradient_start_color="" gradient_end_color="" gradient_start_position="0" gradient_end_position="100" gradient_type="linear" radial_direction="center center" linear_angle="180" background_color="" background_image="" background_image_id="" background_position="left top" background_repeat="no-repeat" background_blend_mode="none" animation_type="" animation_direction="left" animation_speed="0.3" animation_offset="" filter_type="regular" filter_hue="0" filter_saturation="100" filter_brightness="100" filter_contrast="100" filter_invert="0" filter_sepia="0" filter_opacity="100" filter_blur="0" filter_hue_hover="0" filter_saturation_hover="100" filter_brightness_hover="100" filter_contrast_hover="100" filter_invert_hover="0" filter_sepia_hover="0" filter_opacity_hover="100" filter_blur_hover="0" last="no"][fusion_title title_type="text" rotation_effect="bounceIn" display_time="1200" highlight_effect="circle" loop_animation="off" highlight_width="9" highlight_top_margin="0" before_text="" rotation_text="" highlight_text="" after_text="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" content_align="left" size="5" font_size="" animated_font_size="" fusion_font_family_title_font="" fusion_font_subset_title_font="" fusion_font_variant_title_font="" line_height="" letter_spacing="" margin_top="" margin_bottom="" margin_top_mobile="" margin_bottom_mobile="" text_color="" animated_text_color="" highlight_color="" style_type="default" sep_color="" animation_type="" animation_direction="left" animation_speed="0.3" animation_offset=""]

5. Conseil pour la configuration

[/fusion_title][fusion_text columns="" column_min_width="" column_spacing="" rule_style="default" rule_size="" rule_color="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" animation_type="" animation_direction="left" animation_speed="0.3" animation_offset=""]

On ne va pas renter en détail sur la configuration d'Influxdb, mais on vous conseille d'activer l'authentification.

[/fusion_text][fusion_syntax_highlighter theme="oceanic-next" language="conf" line_numbers="" line_wrapping="" copy_to_clipboard="" copy_to_clipboard_text="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" font_size="" border_size="" border_color="" border_style="" background_color="" line_number_background_color="" line_number_text_color="" margin_top="" margin_right="" margin_bottom="" margin_left=""]W2h0dHBdCiAgIGVuYWJsZWQgPSB0cnVlCiAgIGF1dGgtZW5hYmxlZCA9IHRydWU=[/fusion_syntax_highlighter][fusion_text columns="" column_min_width="" column_spacing="" rule_style="default" rule_size="" rule_color="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" animation_type="" animation_direction="left" animation_speed="0.3" animation_offset=""]

Créez ensuite un utilisateur avec un mot de passe d'authentification:

[/fusion_text][fusion_syntax_highlighter theme="oceanic-next" language="x-sh" line_numbers="" line_wrapping="" copy_to_clipboard="" copy_to_clipboard_text="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" font_size="" border_size="" border_color="" border_style="" background_color="" line_number_background_color="" line_number_text_color="" margin_top="" margin_right="" margin_bottom="" margin_left=""]Y3VybCAtWFBPU1QgImh0dHA6Ly9sb2NhbGhvc3Q6ODA4Ni9xdWVyeSIgLS1kYXRhLXVybGVuY29kZSAicT1DUkVBVEUgVVNFUiB1aGF2ZXRoZWNob2ljZSBXSVRIIFBBU1NXT1JEICdteXN0cm9uZ2VzdHBhc3N3b3JkJyBXSVRIIEFMTCBQUklWSUxFR0VTIg==[/fusion_syntax_highlighter][fusion_text columns="" column_min_width="" column_spacing="" rule_style="default" rule_size="" rule_color="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" animation_type="" animation_direction="left" animation_speed="0.3" animation_offset=""]

Pour se connecter à Influxdb vous pouvez lancer la commande : influx puis auth afin de saisir son identifiant.

[/fusion_text][/fusion_builder_column][/fusion_builder_row][/fusion_builder_container][fusion_builder_container hundred_percent="no" hundred_percent_height="no" hundred_percent_height_scroll="no" hundred_percent_height_center_content="yes" equal_height_columns="no" menu_anchor="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" status="published" publish_date="" class="" id="" link_color="" link_hover_color="" border_size="" border_color="" border_style="solid" margin_top="" margin_bottom="" padding_top="" padding_right="" padding_bottom="" padding_left="" gradient_start_color="" gradient_end_color="" gradient_start_position="0" gradient_end_position="100" gradient_type="linear" radial_direction="center center" linear_angle="180" background_color="" background_image="" background_position="center center" background_repeat="no-repeat" fade="no" background_parallax="none" enable_mobile="no" parallax_speed="0.3" background_blend_mode="none" video_mp4="" video_webm="" video_ogv="" video_url="" video_aspect_ratio="16:9" video_loop="yes" video_mute="yes" video_preview_image="" filter_hue="0" filter_saturation="100" filter_brightness="100" filter_contrast="100" filter_invert="0" filter_sepia="0" filter_opacity="100" filter_blur="0" filter_hue_hover="0" filter_saturation_hover="100" filter_brightness_hover="100" filter_contrast_hover="100" filter_invert_hover="0" filter_sepia_hover="0" filter_opacity_hover="100" filter_blur_hover="0"][fusion_builder_row][fusion_builder_column type="1_1" layout="1_1" spacing="" center_content="no" link="" target="_self" min_height="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" hover_type="none" border_size="0" border_color="" border_style="solid" border_position="all" border_radius="" box_shadow="no" dimension_box_shadow="" box_shadow_blur="0" box_shadow_spread="0" box_shadow_color="" box_shadow_style="" padding_top="" padding_right="" padding_bottom="" padding_left="" margin_top="" margin_bottom="" background_type="single" gradient_start_color="" gradient_end_color="" gradient_start_position="0" gradient_end_position="100" gradient_type="linear" radial_direction="center center" linear_angle="180" background_color="" background_image="" background_image_id="" background_position="left top" background_repeat="no-repeat" background_blend_mode="none" animation_type="" animation_direction="left" animation_speed="0.3" animation_offset="" filter_type="regular" filter_hue="0" filter_saturation="100" filter_brightness="100" filter_contrast="100" filter_invert="0" filter_sepia="0" filter_opacity="100" filter_blur="0" filter_hue_hover="0" filter_saturation_hover="100" filter_brightness_hover="100" filter_contrast_hover="100" filter_invert_hover="0" filter_sepia_hover="0" filter_opacity_hover="100" filter_blur_hover="0" last="no"][fusion_title title_type="text" rotation_effect="bounceIn" display_time="1200" highlight_effect="circle" loop_animation="off" highlight_width="9" highlight_top_margin="0" before_text="" rotation_text="" highlight_text="" after_text="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" content_align="left" size="5" font_size="" animated_font_size="" fusion_font_family_title_font="" fusion_font_subset_title_font="" fusion_font_variant_title_font="" line_height="" letter_spacing="" margin_top="" margin_bottom="" margin_top_mobile="" margin_bottom_mobile="" text_color="" animated_text_color="" highlight_color="" style_type="default" sep_color="" animation_type="" animation_direction="left" animation_speed="0.3" animation_offset=""]

6. Logs

[/fusion_title][fusion_text columns="" column_min_width="" column_spacing="" rule_style="default" rule_size="" rule_color="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" animation_type="" animation_direction="left" animation_speed="0.3" animation_offset=""]

Chaque action d'un système informatique produit un fichier log. Ces fichiers textes listent chronologiquement les évènements exécutés. Ils s'avèrent utiles pour comprendre la provenance d'une erreur en cas de bug.

Dans notre cas on s'est retrouvé avec des graphiques Grafana qui n'avait plus de données. Celles-ci semblait ne plus remonter dans Influxdb. Pourtant le service Influxdb était bien actif et a priori fonctionnel.
On a passé pas mal de temps à régader la connexion entre collectd et influxdb. On a fait des test pour savoir si le port UDP d'influxdb était bien fonctionnel nottament avec netstat et tcpdump. N'ayant pas de fichiers de logs de la part d'influxdb sur son fonctionnement nous bloquait. Suite à des recherches sur internet on a trouvé ces différentes commandes qui pourrait en cas de besoin.

Certains des avantages les plus convaincants de systemd sont ceux impliqués dans la journalisation des processus et du système. Le système qui collecte et gère ces journaux s'appelle journal.

Le journal est implémenté avec le démon journald, qui gère tous les messages produits par le noyau, initrd, les services, etc.

Pour récupérer les logs en direct on va utiliser la commande:

[/fusion_text][fusion_syntax_highlighter theme="oceanic-next" language="x-sh" line_numbers="" line_wrapping="" copy_to_clipboard="" copy_to_clipboard_text="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" font_size="" border_size="" border_color="" border_style="" background_color="" line_number_background_color="" line_number_text_color="" margin_top="" margin_right="" margin_bottom="" margin_left=""]am91cm5hbGN0bCAtZiAtdSBpbmZsdXhkYi5zZXJ2aWNl[/fusion_syntax_highlighter][fusion_text columns="" column_min_width="" column_spacing="" rule_style="default" rule_size="" rule_color="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" animation_type="" animation_direction="left" animation_speed="0.3" animation_offset=""]

Lorsqu'on exécute InfluxDB directement, en utilisant influxd, tous les journaux sont écrits dans stderr. On va donc rediriger la sortie du journal avec la commande :

[/fusion_text][fusion_syntax_highlighter theme="oceanic-next" language="x-sh" line_numbers="" line_wrapping="" copy_to_clipboard="" copy_to_clipboard_text="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" font_size="" border_size="" border_color="" border_style="" background_color="" line_number_background_color="" line_number_text_color="" margin_top="" margin_right="" margin_bottom="" margin_left=""]aW5mbHV4ZCAyPi92YXIvbG9nL2luZmx1eGRiL2luZmx1eGRiLmxvZyAm[/fusion_syntax_highlighter][fusion_text columns="" column_min_width="" column_spacing="" rule_style="default" rule_size="" rule_color="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" animation_type="" animation_direction="left" animation_speed="0.3" animation_offset=""]

Cette deuxième solution me déplaît puisque si le serveur est amené à redémarrer, celui-ci ne démarrera pas à moins qu'on modifie le fichier /etc/systemd/system/influxd.service.

Avec ces deux solutions nous avons pu trouver notre problème qui était:

[/fusion_text][fusion_syntax_highlighter theme="oceanic-next" language="conf" line_numbers="" line_wrapping="" copy_to_clipboard="" copy_to_clipboard_text="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" font_size="" border_size="" border_color="" border_style="" background_color="" line_number_background_color="" line_number_text_color="" margin_top="" margin_right="" margin_bottom="" margin_left=""]Mzg5IHRzPTIwMjAtMDYtMjNUMTI6MzY6MzcuOTg2NzE2WiBsdmw9aW5mbyBtc2c9IkZhaWxlZCB0byB3cml0ZSBwb2ludCBiYXRjaCB0byBkYXRhYmFzZSIgbG9nX2lkPTBOX0lodzBHMDAwIHNlcnZpY2U9YXplcnR5IGRiX2luc3RhbmNlPWF6ZXJ0eSBlcnJvcj0icGFydGlhbCB3cml0ZTogbWF4LXNlcmllcy1wZXItZGF0YWJhc2UgbGltaXQgZXhjZWVkZWQ6ICgxMDAwMDAwKSBkcm9wcGVkPTEzIg==[/fusion_syntax_highlighter][fusion_text columns="" column_min_width="" column_spacing="" rule_style="default" rule_size="" rule_color="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" animation_type="" animation_direction="left" animation_speed="0.3" animation_offset=""]

L'erreur de dépassement du nombre maximal de séries par base de données se produit lorsqu'une écriture entraîne un nombre de séries dans une base de données supérieures au nombre maximal autorisé de séries par base de données. La série maximale autorisée par base de données est contrôlée par le paramètre max-series-per-database dans la section [data] du fichier de configuration.
Par défaut, max-series-per-database est défini sur un million. La modification du paramètre à 0 permet un nombre illimité de séries par base de données.

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video_ogv="" video_url="" video_aspect_ratio="16:9" video_loop="yes" video_mute="yes" video_preview_image="" filter_hue="0" filter_saturation="100" filter_brightness="100" filter_contrast="100" filter_invert="0" filter_sepia="0" filter_opacity="100" filter_blur="0" filter_hue_hover="0" filter_saturation_hover="100" filter_brightness_hover="100" filter_contrast_hover="100" filter_invert_hover="0" filter_sepia_hover="0" filter_opacity_hover="100" filter_blur_hover="0"][fusion_builder_row][fusion_builder_column type="1_1" layout="1_1" spacing="" center_content="no" link="" target="_self" min_height="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" hover_type="none" border_size="0" border_color="" border_style="solid" border_position="all" border_radius="" box_shadow="no" dimension_box_shadow="" box_shadow_blur="0" box_shadow_spread="0" box_shadow_color="" box_shadow_style="" padding_top="" padding_right="" padding_bottom="" padding_left="" margin_top="" margin_bottom="" background_type="single" gradient_start_color="" gradient_end_color="" gradient_start_position="0" gradient_end_position="100" gradient_type="linear" radial_direction="center center" linear_angle="180" background_color="" background_image="" background_image_id="" background_position="left top" background_repeat="no-repeat" background_blend_mode="none" animation_type="" animation_direction="left" animation_speed="0.3" animation_offset="" filter_type="regular" filter_hue="0" filter_saturation="100" filter_brightness="100" filter_contrast="100" filter_invert="0" filter_sepia="0" filter_opacity="100" filter_blur="0" filter_hue_hover="0" filter_saturation_hover="100" filter_brightness_hover="100" filter_contrast_hover="100" filter_invert_hover="0" filter_sepia_hover="0" filter_opacity_hover="100" filter_blur_hover="0" last="no"][fusion_section_separator divider_type="hills" divider_position="left" divider_candy="top" icon="" icon_color="" bordersize="" bordercolor="" backgroundcolor="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" /][/fusion_builder_column][/fusion_builder_row][/fusion_builder_container][fusion_builder_container hundred_percent="no" hundred_percent_height="no" hundred_percent_height_scroll="no" hundred_percent_height_center_content="yes" equal_height_columns="no" menu_anchor="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" status="published" publish_date="" class="" id="" link_color="" link_hover_color="" border_size="" border_color="" border_style="solid" margin_top="" margin_bottom="" padding_top="" padding_right="" padding_bottom="" padding_left="" gradient_start_color="" gradient_end_color="" gradient_start_position="0" gradient_end_position="100" gradient_type="linear" radial_direction="center center" linear_angle="180" background_color="" background_image="" background_position="center center" background_repeat="no-repeat" fade="no" background_parallax="none" enable_mobile="no" parallax_speed="0.3" background_blend_mode="none" video_mp4="" video_webm="" video_ogv="" video_url="" video_aspect_ratio="16:9" video_loop="yes" video_mute="yes" video_preview_image="" filter_hue="0" filter_saturation="100" filter_brightness="100" filter_contrast="100" filter_invert="0" filter_sepia="0" filter_opacity="100" filter_blur="0" filter_hue_hover="0" filter_saturation_hover="100" filter_brightness_hover="100" filter_contrast_hover="100" filter_invert_hover="0" filter_sepia_hover="0" filter_opacity_hover="100" filter_blur_hover="0"][fusion_builder_row][fusion_builder_column type="1_1" layout="1_1" spacing="" center_content="no" link="" target="_self" min_height="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" hover_type="none" border_size="0" border_color="" border_style="solid" border_position="all" border_radius="" box_shadow="no" dimension_box_shadow="" box_shadow_blur="0" box_shadow_spread="0" box_shadow_color="" box_shadow_style="" padding_top="" padding_right="" padding_bottom="" padding_left="" margin_top="" margin_bottom="" background_type="single" gradient_start_color="" gradient_end_color="" gradient_start_position="0" gradient_end_position="100" gradient_type="linear" radial_direction="center center" linear_angle="180" background_color="" background_image="" background_image_id="" background_position="left top" background_repeat="no-repeat" background_blend_mode="none" animation_type="" animation_direction="left" animation_speed="0.3" animation_offset="" filter_type="regular" filter_hue="0" filter_saturation="100" filter_brightness="100" filter_contrast="100" filter_invert="0" filter_sepia="0" filter_opacity="100" filter_blur="0" filter_hue_hover="0" filter_saturation_hover="100" filter_brightness_hover="100" filter_contrast_hover="100" filter_invert_hover="0" filter_sepia_hover="0" filter_opacity_hover="100" filter_blur_hover="0" last="no"][fusion_title title_type="text" rotation_effect="bounceIn" display_time="1200" highlight_effect="circle" loop_animation="off" highlight_width="9" highlight_top_margin="0" before_text="" rotation_text="" highlight_text="" after_text="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" content_align="left" size="5" font_size="" animated_font_size="" fusion_font_family_title_font="" fusion_font_subset_title_font="" fusion_font_variant_title_font="" line_height="" letter_spacing="" margin_top="" margin_bottom="" margin_top_mobile="" margin_bottom_mobile="" text_color="" animated_text_color="" highlight_color="" style_type="default" sep_color="" animation_type="" animation_direction="left" animation_speed="0.3" animation_offset=""]

 

Exemple configuration collectd:

[/fusion_title][fusion_syntax_highlighter theme="oceanic-next" language="conf" line_numbers="" line_wrapping="" copy_to_clipboard="" copy_to_clipboard_text="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" font_size="" border_size="" border_color="" border_style="" background_color="" line_number_background_color="" line_number_text_color="" margin_top="" margin_right="" margin_bottom="" margin_left=""]SG9zdG5hbWUgIlNFUlZFUi1IT1NUTkFNRSIKRlFETkxvb2t1cCB0cnVlClBJREZpbGUgIi92YXIvcnVuL2NvbGxlY3RkLnBpZCIKQmFzZURpciAiL3Zhci9saWIvY29sbGVjdGQiClBsdWdpbkRpciAiL3Vzci9saWIvY29sbGVjdGQiClR5cGVzREIgIi91c3Ivc2hhcmUvY29sbGVjdGQvdHlwZXMuZGIiIAoKTG9hZFBsdWdpbiBsb2dmaWxlCkxvYWRQbHVnaW4gc3lzbG9nCgo8UGx1Z2luIGxvZ2ZpbGU+CglMb2dMZXZlbCAiaW5mbyIKCUZpbGUgIi92YXIvbG9nL2NvbGxlY3RkLmxvZyIKCVRpbWVzdGFtcCB0cnVlCglQcmludFNldmVyaXR5IGZhbHNlCjwvUGx1Z2luPgoKPFBsdWdpbiBzeXNsb2c+CglMb2dMZXZlbCBpbmZvCjwvUGx1Z2luPgoKTG9hZFBsdWdpbiBjcHUKTG9hZFBsdWdpbiBkZgpMb2FkUGx1Z2luIGRpc2sKTG9hZFBsdWdpbiBlbnRyb3B5CkxvYWRQbHVnaW4gaW50ZXJmYWNlCkxvYWRQbHVnaW4gaXJxCkxvYWRQbHVnaW4gbG9hZApMb2FkUGx1Z2luIG1lbW9yeQpMb2FkUGx1Z2luIG5ldHdvcmsKTG9hZFBsdWdpbiBwcm9jZXNzZXMKTG9hZFBsdWdpbiBzd2FwCkxvYWRQbHVnaW4gdGNwY29ubnMKTG9hZFBsdWdpbiB1cHRpbWUKTG9hZFBsdWdpbiB1c2VycwoKPFBsdWdpbiBjcHU+CglSZXBvcnRCeUNwdSB0cnVlCiMJUmVwb3J0QnlTdGF0ZSB0cnVlCglWYWx1ZXNQZXJjZW50YWdlIHRydWUgCjwvUGx1Z2luPgoKPFBsdWdpbiBkZj4KCURldmljZSAiL2Rldi9zZGExIgojCURldmljZSAiMTkyLjE2OC4wLjI6L21udC9uZnMiCiMJTW91bnRQb2ludCAiL2hvbWUiCiMJRlNUeXBlICJleHQzIgoKCSMgaWdub3JlIHJvb3RmczsgZWxzZSwgdGhlIHJvb3QgZmlsZS1zeXN0ZW0gd291bGQgYXBwZWFyIHR3aWNlLCBjYXVzaW5nCgkjIG9uZSBvZiB0aGUgdXBkYXRlcyB0byBmYWlsIGFuZCBzcGFtIHRoZSBsb2cKCUZTVHlwZSByb290ZnMKCSMgaWdub3JlIHRoZSB1c3VhbCB2aXJ0dWFsIC8gdGVtcG9yYXJ5IGZpbGUtc3lzdGVtcwoJRlNUeXBlIHN5c2ZzCglGU1R5cGUgcHJvYwoJRlNUeXBlIGRldnRtcGZzCglGU1R5cGUgZGV2cHRzCglGU1R5cGUgdG1wZnMKCUZTVHlwZSBmdXNlY3RsCglGU1R5cGUgY2dyb3VwCglJZ25vcmVTZWxlY3RlZCB0cnVlCglWYWx1ZXNQZXJjZW50YWdlIHRydWUgCjwvUGx1Z2luPgoKPFBsdWdpbiBpbnRlcmZhY2U+CglJbnRlcmZhY2UgImV0aDAiCiMJSWdub3JlU2VsZWN0ZWQgZmFsc2UKIwlSZXBvcnRJbmFjdGl2ZSB0cnVlCiMJVW5pcXVlTmFtZSBmYWxzZQo8L1BsdWdpbj4KCjxQbHVnaW4gbWVtb3J5PgojCVZhbHVlc0Fic29sdXRlIHRydWUKCVZhbHVlc1BlcmNlbnRhZ2UgdHJ1ZQo8L1BsdWdpbj4KCjxQbHVnaW4gbmV0d29yaz4KIwkjIGNsaWVudCBzZXR1cDoKIwlTZXJ2ZXIgImZmMTg6OmVmYzA6NGE0MiIgIjI1ODI2IgogICAgICAgIDxTZXJ2ZXIgIklORkxVWERCLUlQIiAiMjU4MjYiPgojCQlJbnRlcmZhY2UgImVuczMiCgkJU2VjdXJpdHlMZXZlbCBFbmNyeXB0CgkJVXNlcm5hbWUgInVzZXIiCgkJUGFzc3dvcmQgInNlY3JldCIKIwkJSW50ZXJmYWNlICJldGgwIgojCQlSZXNvbHZlSW50ZXJ2YWwgMTQ0MDAKCTwvU2VydmVyPgojCVRpbWVUb0xpdmUgMTI4CiMJIyBzZXJ2ZXIgc2V0dXA6CiMJTGlzdGVuICJmZjE4OjplZmMwOjRhNDIiICIyNTgyNiIKIwk8TGlzdGVuICIyMzkuMTkyLjc0LjY2IiAiMjU4MjYiPgojCQlTZWN1cml0eUxldmVsIFNpZ24KIwkJQXV0aEZpbGUgIi9ldGMvY29sbGVjdGQvcGFzc3dkIgojCQlJbnRlcmZhY2UgImV0aDAiCiMJPC9MaXN0ZW4+CglNYXhQYWNrZXRTaXplIDE0NTIKIwkjIHByb3h5IHNldHVwIChjbGllbnQgYW5kIHNlcnZlciBhcyBhYm92ZSk6CiMJRm9yd2FyZCB0cnVlCiMJIyBzdGF0aXN0aWNzIGFib3V0IHRoZSBuZXR3b3JrIHBsdWdpbiBpdHNlbGYKIwlSZXBvcnRTdGF0cyBmYWxzZQojCUNhY2hlRmx1c2ggMTgwMAo8L1BsdWdpbj4KCjxQbHVnaW4gc3dhcD4KCVJlcG9ydEJ5RGV2aWNlIGZhbHNlCglSZXBvcnRCeXRlcyB0cnVlCglWYWx1ZXNQZXJjZW50YWdlIHRydWUKPC9QbHVnaW4+Cgo8UGx1Z2luIHRjcGNvbm5zPgoJTGlzdGVuaW5nUG9ydHMgdHJ1ZSAKPC9QbHVnaW4+CgoKPEluY2x1ZGUgIi9ldGMvY29sbGVjdGQvY29sbGVjdGQuY29uZi5kIj4KCUZpbHRlciAiKi5jb25mIgo8L0luY2x1ZGU+[/fusion_syntax_highlighter][/fusion_builder_column][/fusion_builder_row][/fusion_builder_container]