How to change resolv.conf for existing docker containers - Stack Overflow (https://cdn.sstatic.net/Sites/stackoverflow/Img/apple-touch-icon.png?v=c78bd457575a) (Stack Overflow) (https://stackoverflow.com/opensearch.xml) (https://stackoverflow.com/questions/33947873/how-to-change-resolv-conf-for-existing-docker-containers) (Feed for question 'How to change resolv.conf for existing docker containers') (https://stackoverflow.com/feeds/question/33947873)   (site logo)    By clicking “Sign up”, you agree to our (https://stackoverflow.com/legal/terms-of-service/public) terms of service and acknowledge you have read our (https://stackoverflow.com/legal/privacy-policy) privacy policy .       Sign up with Google    Sign up with GitHub     OR Email   Password (8+ characters (at least 1 letter & 1 number))      Sign up      Already have an account? (https://stackoverflow.com/users/login) Log in             Skip to main content   (https://stackoverflow.com/) Stack Overflow  (https://stackoverflow.co/) About   Products   (https://stackoverflow.co/teams/) For Teams     (Search…)        (Click to show search)     (https://stackoverflow.com/users/login?ssrc=head&returnurl=https%3a%2f%2fstackoverflow.com%2fquestions%2f33947873%2fhow-to-change-resolv-conf-for-existing-docker-containers) Log in  (https://stackoverflow.com/users/signup?ssrc=head&returnurl=https%3a%2f%2fstackoverflow.com%2fquestions%2f33947873%2fhow-to-change-resolv-conf-for-existing-docker-containers) Sign up      Let's set up your homepage Select a few topics you're interested in:   python javascript c# reactjs java android html flutter c++ node.js typescript css r php angular next.js spring-boot machine-learning sql excel ios azure docker  Or search from our full list:    (Search)           Next You’ll be prompted to create an account to view your personalized homepage.          (https://stackoverflow.com/)   Home    (https://stackoverflow.com/questions)   Questions    (https://stackoverflow.ai/)    AI Assist Labs     (https://stackoverflow.com/tags)    Tags     (https://stackoverflow.com/beta/challenges)   Challenges    (https://chat.stackoverflow.com/rooms/259507/stack-overflow-lobby)        Chat   (https://stackoverflow.blog/contributed?utm_medium=referral&utm_source=stackoverflow-community&utm_campaign=so-blog&utm_content=experiment-articles)    Articles    (https://stackoverflow.com/users)   Users     (https://stackoverflow.com/jobs?source=so-left-nav)   Jobs    (https://stackoverflow.com/jobs/companies?so_medium=stackoverflow&so_source=SiteNav)   Companies    Collectives       Communities for your favorite technologies. (https://stackoverflow.com/collectives-all) Explore all Collectives     Teams Ask questions, find answers and collaborate at work with Stack Overflow for Teams.  (https://stackoverflowteams.com/teams/create/free/?utm_medium=referral&utm_source=stackoverflow-community&utm_campaign=side-bar&utm_content=explore-teams) Try Teams for free (https://stackoverflow.co/teams/?utm_medium=referral&utm_source=stackoverflow-community&utm_campaign=side-bar&utm_content=explore-teams) Explore Teams           (Illustration of upvote icon after it is clicked)   Hang on, you can't upvote just yet. You'll need to complete a few actions and gain 15 reputation points
        before being able to upvote. Upvoting indicates when questions and answers are useful. (https://stackoverflow.com/help/whats-reputation) What's reputation and how do I get it?  Instead, you can save this post to reference later.     Save this post for later Not now          (Illustration of upvote icon after it is clicked)   Thanks for your vote! You now have 5 free votes weekly. Free votescount toward the total vote score does not give reputation to the author  Continue to help good content that is interesting, well-researched, and useful, rise to the top! To gain full voting privileges, (https://stackoverflow.com/help/whats-reputation) earn reputation .   Got it! Go to help center to learn more           (https://cdn.sstatic.net/Sites/stackoverflow/Img/apple-touch-icon.png?v=c78bd457575a) (https://stackoverflow.com/questions/33947873/how-to-change-resolv-conf-for-existing-docker-containers) How to change resolv.conf for existing docker containers  (https://stackoverflow.com/questions/ask) Ask Question     (2015-11-26 22:31:41Z) Asked 9 years, 10 months ago  Modified (https://stackoverflow.com/questions/33947873/how-to-change-resolv-conf-for-existing-docker-containers?lastactivity) (2020-11-19 00:51:35Z) 4 years, 10 months ago  (Viewed 1,971 times) Viewed 2k times       This question shows research effort; it is useful and clear 4  (This question does not show any research effort; it is unclear or not useful)         Save this question. (https://stackoverflow.com/posts/33947873/timeline)    Show activity on this post.   I recently upgraded docker version on my Ubuntu to latest 1.9 version.  During the upgrade docker network bridge gateway has changed from 172.17.42.1 to 172.17.0.1 . I had some existing containers where the resolv.conf still points to 172.17.42.1 so whenever I restart my container the resolv.conf is resetting to 172.17.42.1 .  I tried to modify the /var/lib/docker/containers/<containerid>/resolv.conf but it has no effect. Currently whenever I restart the container I connect to container and change /etc/resolv.conf file manually.  This changes to this file are lost during container restart.  I don't want to kill my container and re-create them again. Is there any way to make my resolv.conf permanent for existing containers? Thanks in advance
-Kesav  (https://stackoverflow.com/questions/tagged/docker) (show questions tagged 'docker') docker      (https://stackoverflow.com/q/33947873) (Short permalink to this question) Share   (https://stackoverflow.com/posts/33947873/edit) Improve this question  Follow  Follow this question to receive notifications      asked (2015-11-26 22:31:41Z) Nov 26, 2015 at 22:31   (https://stackoverflow.com/users/184663/kesavkolla) (kesavkolla's user avatar)    (https://stackoverflow.com/users/184663/kesavkolla) kesavkolla kesavkolla (reputation score) 459 (5 silver badges)  5  5 silver badges (14 bronze badges)  14  14 bronze badges          (Use comments to ask for more information or suggest improvements. Avoid answering questions in comments.) Add a comment  |  (Expand to show all comments on this post)        1 Answer 1   Sorted by:  (https://stackoverflow.com/questions/33947873/how-to-change-resolv-conf-for-existing-docker-containers?answertab=scoredesc#tab-top) Reset to default   (scoredesc) Highest score (default)  (trending) Trending (recent votes count more)  (modifieddesc) Date modified (newest first)  (createdasc) Date created (oldest first)            This answer is useful 0  (This answer is not useful)         Save this answer. (Loading when this answer was accepted…)  (https://stackoverflow.com/posts/64903732/timeline)    Show activity on this post.   Im building portable system that change host network a lot, the solution i found was create your container as a host and bind a volume from host resolv.conf to the container resolv.conf mainly due because if the network changes when the container is already up it will not update here is an example of the docker-compose service declaration gpioctl:
    container_name: gpioctl
    image: registry.gitlab.com/absadevelopers/bluetoothgateway/bluetoothgateway_gpioctl
    network_mode: host
    volumes:
      - /var/log/knesys:/var/log/knesys
      - /etc/resolv.conf:/etc/resolv.conf:ro
    restart: unless-stopped
    depends_on:
      - nodesetup     (https://stackoverflow.com/a/64903732) (Short permalink to this answer) Share   (https://stackoverflow.com/posts/64903732/edit) Improve this answer  Follow  Follow this answer to receive notifications      answered (2020-11-19 00:51:35Z) Nov 19, 2020 at 0:51   (https://stackoverflow.com/users/12305425/alberto-martinez) (Alberto Martinez's user avatar)    (https://stackoverflow.com/users/12305425/alberto-martinez) Alberto Martinez Alberto Martinez (reputation score) 17 (2 bronze badges)  2  2 bronze badges          Sign up to request clarification or add additional context in comments.      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