{"id":843,"date":"2021-06-07T11:43:15","date_gmt":"2021-06-07T09:43:15","guid":{"rendered":"https:\/\/preprod.editions-eni.fr\/blog\/?p=843"},"modified":"2023-12-06T09:26:44","modified_gmt":"2023-12-06T08:26:44","slug":"configuration-centralisee-de-vos-serveurs-et-applications-avec-ansible-5-prerequis","status":"publish","type":"post","link":"https:\/\/www.editions-eni.fr\/blog\/configuration-centralisee-de-vos-serveurs-et-applications-avec-ansible-5-prerequis\/","title":{"rendered":"Configuration centralis\u00e9e de vos serveurs et applications avec Ansible : 5 pr\u00e9requis"},"content":{"rendered":"

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Le monde informatique est en changement permanent et la seule chose qui ne change pas, c’est que tout change tout le temps ! Malheureusement, les derni\u00e8res ann\u00e9es ne contrediront pas cette tendance.<\/span>
Les pratiques qui pouvaient auparavant \u00eatre tol\u00e9r\u00e9es ou per\u00e7ues comme de bonnes habitudes (d\u00e9ploiements personnalis\u00e9s, gestes manuels) sont de vrais\u00a0<\/span>freins \u00e0 l\u2019innovation<\/strong>\u00a0et \u00e0 la\u00a0<\/span>capacit\u00e9 d\u2019une entreprise \u00e0 se transformer<\/strong>.<\/span><\/p>\n

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Pr\u00e9requis n\u00b01<\/h3>\n

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R\u00e9fl\u00e9chir en amont \u00e0 la finalit\u00e9 du projet d’automatisation.<\/h4>\n

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Avant de se lancer dans la\u00a0<\/span>configuration centralis\u00e9e de vos serveurs et applications avec Ansible<\/strong>, le premier r\u00e9flexe \u00e0 avoir est de penser \u00e0 la finalit\u00e9 de l\u2019informatique :\u00a0<\/span>l\u2019h\u00e9bergement d\u2019applications<\/strong>. Une erreur courante consiste \u00e0 r\u00e9fl\u00e9chir aux moyens \u00e0 mettre en \u0153uvre, ce qui a pour cons\u00e9quence de perdre son interlocuteur avec des d\u00e9tails trop techniques.<\/span>
Les acteurs du m\u00e9tier\u00a0<\/span>ne veulent pas savoir si leur application sera h\u00e9berg\u00e9e sur une machine physique, virtuelle ou sur un container<\/strong>. Ce qu\u2019ils veulent c\u2019est disposer d\u2019une application fonctionnelle. Peu importe la mani\u00e8re.<\/span><\/p>\n

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Pr\u00e9requis n\u00b02<\/h3>\n

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\u00catre \u00e0 l’\u00e9coute, savoir vulgariser et faire preuve de p\u00e9dagogie.<\/h4>\n

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Autour de la m\u00eame approche, il est indispensable d\u2019<\/span>\u00eatre \u00e0 l\u2019\u00e9coute<\/strong>\u00a0du m\u00e9tier afin de capter son attention dans le cadre du projet de configuration centralis\u00e9e et de le rassurer tout en lui communiquant des\u00a0<\/span>indicateurs pertinents<\/strong>.<\/span>
La\u00a0<\/span>p\u00e9dagogie<\/strong>, est \u00e0 ce titre, tr\u00e8s importante afin que votre client comprenne les\u00a0<\/span>enjeux associ\u00e9s \u00e0 une bonne configuration<\/strong>. En contrepartie, si ce dernier est suffisamment sensibilis\u00e9 aux probl\u00e9matiques propres \u00e0 la production comme la s\u00e9curit\u00e9 et l\u2019exploitation, il n\u2019acceptera que mieux les demandes d\u2019\u00e9volution.<\/span><\/p>\n

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Pr\u00e9requis n\u00b03<\/h3>\n

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Garder \u00e0 l’esprit l’objectif commun.<\/h4>\n

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Le\u00a0<\/span>dialogue<\/strong>\u00a0avec le commanditaire a une place primordiale dans la r\u00e9ussite de tout projet. Un bon moyen de l\u2019\u00e9tablir est d\u2019<\/span>entretenir des relations saines<\/strong>\u00a0entre les diff\u00e9rents intervenants d\u2019une cha\u00eene de production. Les DSI doivent r\u00e9guli\u00e8rement arbitrer entre les besoins des diff\u00e9rents acteurs qui ont chacun leurs exigences.<\/span>
Les intervenants ne doivent pas perdre de vue le\u00a0<\/span>v\u00e9ritable enjeu : mettre une application \u00e0 disposition des utilisateurs<\/strong>. Il est, dans ces conditions, particuli\u00e8rement important de mettre de c\u00f4t\u00e9 ses diff\u00e9rends, de\u00a0<\/span>comprendre et reconna\u00eetre les besoins de chacun<\/strong>, afin d\u2019\u0153uvrer tous ensemble en faveur d\u2019un\u00a0<\/span>objectif commun<\/strong>.<\/span><\/p>\n

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Pr\u00e9requis n\u00b04<\/h3>\n

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Collaborer en toute bienveillance.<\/h4>\n

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Il faut aussi savoir\u00a0<\/span>remettre en cause l\u2019existant<\/strong>\u00a0d\u2019une organisation. Dans une entreprise, le\u00a0<\/span>syst\u00e8me d\u2019information<\/strong>\u00a0est bien souvent le long et parfois chaotique r\u00e9sultat d\u2019un ensemble de compromis. Il n\u2019est pas rare que les diff\u00e9rents acteurs aient besoin de g\u00e9n\u00e9rer de nombreuses preuves et proc\u00e9dures afin de se prot\u00e9ger \u2013 ou pire \u2013 de prouver que les autres ont fait des erreurs. La simplification et la r\u00e9duction des proc\u00e9dures passent avant tout par une\u00a0<\/span>am\u00e9lioration et une collaboration bienveillante inter-services<\/strong>.<\/span><\/p>\n

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Pr\u00e9requis n\u00b05<\/h3>\n

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Automatiser les t\u00e2ches avec Ansible.<\/h4>\n

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L\u2019<\/span>automatisation des t\u00e2ches<\/strong>\u00a0doit intervenir tout au long de cette transformation et doit se concentrer sur ce qui g\u00e9n\u00e8re le plus de difficult\u00e9s pour les \u00e9quipes. Ainsi, \u00e0 difficult\u00e9 \u00e9quivalente, la t\u00e2che \u00e0 privil\u00e9gier sera celle qui permet de\u00a0<\/span>lib\u00e9rer le plus de temps pour l\u2019\u00e9quipe<\/strong>\u00a0ou ce qui procure le plus de douleur. Des outils comme Ansible peuvent remplir cette t\u00e2che le plus simplement possible en s\u2019adaptant \u00e0 l\u2019existant.<\/span><\/p>\n

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En conclusion<\/h3>\n

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\u00c0 la fin de ce processus, ne doit rester que ce qui est strictement n\u00e9cessaire : constructions de livrables, tests automatis\u00e9s, mises \u00e0 jour de plateformes<\/strong> etc. Comme nous l\u2019avons soulign\u00e9 tout au long de cet article,\u00a0l\u2019automatisation n\u2019est pas une finalit\u00e9<\/strong>\u00a0en soit et ne doit se faire que sur ce qui a r\u00e9ellement de la valeur. Rien ne sert d\u2019automatiser des t\u00e2ches si ces derni\u00e8res sont l\u00e0 pour des mauvaises raisons. L\u2019automatisation ne ferait alors qu\u2019ajouter de la complexit\u00e9 sans plus-value pour vos utilisateurs et commanditaires.<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.9.0″ _module_preset=”default”][et_pb_row _builder_version=”4.9.0″ _module_preset=”default”][et_pb_column type=”4_4″ _builder_version=”4.9.0″ _module_preset=”default”][et_pb_testimonial author=”Yannig Perr\u00e9” job_title=”notre expert Ansible” portrait_url=”https:\/\/www.editions-eni.fr\/blog\/wp-content\/uploads\/2021\/06\/yannig_perre.jpg” _builder_version=”4.9.7″ _module_preset=”default” custom_margin=”||0px||false|false” custom_padding=”||||false|false”]<\/p>\n

Administrateur syst\u00e8me depuis de nombreuses ann\u00e9es, Yannig PERR\u00c9 est aujourd’hui sp\u00e9cialiste de la gestion d’applications d\u00e9velopp\u00e9es en microservices \u00e0 l’aide de containers. Il associe naturellement \u00e0 ce savoir-faire diff\u00e9rents outils pour g\u00e9rer les probl\u00e9matiques d’installation, de r\u00e9silience, de scalabilit\u00e9 ainsi que de publication des applications sur Internet. Associ\u00e9e \u00e0 sa longue exp\u00e9rience du monde open source, cette expertise lui permet de transmettre aux lecteurs des livres r\u00e9ellement efficaces sur la mise en \u0153uvre de Kubernetes ou d’Ansible.<\/span><\/p>\n

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Pour aller plus loin<\/span><\/h2>\n

[\/et_pb_text][et_pb_divider color=”#3BB6D5″ divider_position=”center” divider_weight=”3px” _builder_version=”4.9.0″ max_width=”90px” max_width_tablet=”13%” max_width_last_edited=”off|desktop” custom_margin=”5px||||false|false” custom_padding=”|||” locked=”off”][\/et_pb_divider][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”1_4,1_4,1_4,1_4″ _builder_version=”4.9.0″ _module_preset=”default” custom_css_main_element_last_edited=”on|phone” custom_css_main_element_tablet=”display:flex;” custom_css_main_element_phone=”display:inherit;”][et_pb_column type=”1_4″ _builder_version=”4.9.0″ _module_preset=”default”][et_pb_image src=”https:\/\/www.editions-eni.fr\/livre\/ansible-gerez-la-configuration-de-vos-serveurs-et-le-deploiement-de-vos-applications-3e-edition-9782409039720_L.jpg” alt=”Scratch et Raspberry Pi Projets maker pour s’initier \u00e0 l’\u00e9lectronique et \u00e0 la robotique” title_text=”scratch-et-raspberry-pi-projets-maker-pour-s-initier-a-l-electronique-et-a-la-robotique-2e-edition-9782409027901_M” url=”https:\/\/www.editions-eni.fr\/livre\/ansible-gerez-la-configuration-de-vos-serveurs-et-le-deploiement-de-vos-applications-3e-edition-9782409039720″ url_new_window=”on” _builder_version=”4.9.7″ _module_preset=”default” width_tablet=”85%” width_phone=”” width_last_edited=”on|tablet” custom_margin=”||10px||false|false” hover_enabled=”0″ box_shadow_style=”preset3″ transform_styles__hover_enabled=”on|hover” transform_scale__hover=”105%|105%” transform_scale__hover_enabled=”on|hover” transform_translate__hover_enabled=”on|desktop” transform_rotate__hover_enabled=”on|desktop” transform_skew__hover_enabled=”on|desktop” transform_origin__hover_enabled=”on|desktop” sticky_enabled=”0″][\/et_pb_image][et_pb_text _builder_version=”4.9.7″ _module_preset=”default” text_font=”||||||||” text_text_color=”#3BB6D5″ background_color=”RGBA(0,0,0,0)” custom_margin=”||5px||false|false”]<\/p>\n

Livre<\/p>\n

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Ansible<\/strong>
G\u00e9rez la configuration de vos serveurs et le d\u00e9ploiement de vos applications<\/p>\n

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Vid\u00e9o<\/p>\n

[\/et_pb_text][et_pb_text _builder_version=”4.9.7″ _module_preset=”default” custom_padding_tablet=”|10px|||false|false” custom_padding_phone=”|0px|||false|false” custom_padding_last_edited=”on|phone”]Ansible<\/strong>
\nConfiguration centralis\u00e9e de serveurs et d’applications[\/et_pb_text][\/et_pb_column][et_pb_column type=”1_4″ _builder_version=”4.9.0″ _module_preset=”default”][et_pb_image src=”https:\/\/www.editions-eni.fr\/blog\/wp-content\/uploads\/2021\/06\/presentiel-system.jpg” alt=”formation en live” title_text=”formation en live” url=”https:\/\/www.eni-service.fr\/index.php\/fomation\/ansible-pour-lautomatisation-du-reseau\/” url_new_window=”on” _builder_version=”4.9.7″ _module_preset=”default” width_tablet=”85%” width_phone=”” width_last_edited=”on|tablet” custom_margin=”||10px||false|false” box_shadow_style=”preset3″ transform_styles__hover_enabled=”on|hover” transform_scale__hover=”105%|105%” transform_scale__hover_enabled=”on|hover” transform_translate__hover_enabled=”on|desktop” transform_rotate__hover_enabled=”on|desktop” transform_skew__hover_enabled=”on|desktop” transform_origin__hover_enabled=”on|desktop”][\/et_pb_image][et_pb_text _builder_version=”4.9.0″ _module_preset=”default” text_font=”||||||||” text_text_color=”#3BB6D5″ background_color=”RGBA(0,0,0,0)” custom_margin=”||5px||false|false”]<\/p>\n

Formation<\/p>\n

[\/et_pb_text][et_pb_text _builder_version=”4.9.7″ _module_preset=”default” custom_padding_tablet=”|10px|||false|false” custom_padding_phone=”|0px|||false|false” custom_padding_last_edited=”on|phone”]Ansible pour l\u2019automatisation du r\u00e9seau<\/strong>[\/et_pb_text][\/et_pb_column][et_pb_column type=”1_4″ _builder_version=”4.9.0″ _module_preset=”default”][et_pb_image src=”https:\/\/www.editions-eni.fr\/blog\/wp-content\/uploads\/2021\/06\/presentiel-system.jpg” alt=”formation en live” title_text=”formation en live” url=”https:\/\/www.eni-service.fr\/index.php\/fomation\/automatisation-avancee-avec-ansible-bonnes-pratiques\/” url_new_window=”on” _builder_version=”4.9.7″ _module_preset=”default” width_tablet=”85%” width_phone=”” width_last_edited=”on|tablet” custom_margin=”||10px||false|false” box_shadow_style=”preset3″ transform_styles__hover_enabled=”on|hover” transform_scale__hover=”105%|105%” transform_scale__hover_enabled=”on|hover” transform_translate__hover_enabled=”on|desktop” transform_rotate__hover_enabled=”on|desktop” transform_skew__hover_enabled=”on|desktop” transform_origin__hover_enabled=”on|desktop”][\/et_pb_image][et_pb_text _builder_version=”4.9.7″ _module_preset=”default” text_font=”||||||||” text_text_color=”#3BB6D5″ background_color=”RGBA(0,0,0,0)” custom_margin=”||5px||false|false”]<\/p>\n

Formation<\/p>\n

[\/et_pb_text][et_pb_text _builder_version=”4.9.7″ _module_preset=”default” custom_padding_tablet=”|10px|||false|false” custom_padding_phone=”|0px|||false|false” custom_padding_last_edited=”on|phone”]Automatisation avanc\u00e9e avec Ansible<\/strong>
\nBonnes pratiques[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"

Le monde informatique est en changement permanent et la seule chose qui ne change pas, c’est que tout change tout le temps ! Malheureusement, les derni\u00e8res ann\u00e9es ne contrediront pas cette tendance.Les pratiques qui pouvaient auparavant \u00eatre tol\u00e9r\u00e9es ou per\u00e7ues comme de bonnes habitudes (d\u00e9ploiements personnalis\u00e9s, gestes manuels) sont de vrais\u00a0freins \u00e0 l\u2019innovation\u00a0et \u00e0 la\u00a0capacit\u00e9 […]<\/p>\n","protected":false},"author":4,"featured_media":850,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","inline_featured_image":false,"footnotes":""},"categories":[18,3],"tags":[],"genre":[],"class_list":["post-843","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-paroles-d-experts","category-systemes-et-reseaux"],"acf":[],"yoast_head":"\nConfiguration centralis\u00e9e de vos serveurs et applications avec Ansible : 5 pr\u00e9requis<\/title>\n<meta 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