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Save this post for later Not now           (https://cdn.sstatic.net/Sites/stackoverflow/Img/apple-touch-icon.png?v=c78bd457575a) (/questions/53143849/docker-compose-error-read-only-file-system) docker-compose error "read-only file system"  (/questions/ask) Ask Question     (2018-11-04 18:08:37Z) Asked 6 years, 4 months ago  Modified (?lastactivity) (2023-05-26 21:29:20Z) 1 year, 9 months ago  (Viewed 29,797 times) Viewed 30k times         This question shows research effort; it is useful and clear  (70:3:31e,16:1ee3752a72c29a82,10:1742521647,16:ad00f9e0f7010275,8:53143849,4f4470686c37eed57ffed4432472b0abe1f10976c0327d193e58519b64dc9846) 13  (This question does not show any research effort; it is unclear or not useful)    (70:3:31e,16:7878a2388de241b2,10:1742521647,16:506b815a609471ea,8:53143849,e97f1b72cd6853402eba4c311f1ba058352b401eb9847f9ad421d9ea537d6480)      Save this question.  (/posts/53143849/timeline)    Show activity on this post.    I designed a docker-compose.yml file that also supposed to work with individual volumes. I created a raid-drive which is mounted as /dataraid to my system. I can read/write to the system, but when using it in my compose file, I get read-only file system error messages. Adjusting the volumes to a other path like /home/myname/test the compose file works. I have no idea what the /dataraid makes it "read-only". What are the permissions settings a compose file needs? error message: ERROR: for db  Cannot start service db: error while creating mount source path '/dataraid/nextcloud/mariadb' : mkdir /dataraid: read-only file system   compose: version: '3' services: db: image: mariadb command: --transaction-isolation=READ-COMMITTED --binlog-format=ROW restart: always volumes: - /dataraid/nextcloud/mariadb:/var/lib/mysql environment: - MYSQL_ROOT_PASSWORD=PASSWORD env_file: - db.env redis: image: redis restart: always app: image: nextcloud:fpm restart: always volumes: - /dataraid/nextcloud/html:/var/www/html environment: - MYSQL_HOST=db env_file: - db.env depends_on: - db - redis web: build: ./web restart: always volumes: - /dataraid/nextcloud/html:/var/www/html:ro environment: - VIRTUAL_HOST=name.de - LETSENCRYPT_HOST=name.de - LETSENCRYPT_EMAIL=x@y.de depends_on: - app ports: - 4080 :80 networks: - proxy-tier - default collabora: image: collabora/code expose: - 9980 cap_add: - MKNOD environment: - domain=name.de - VIRTUAL_HOST=name.de - VIRTUAL_PORT=9980 - VIRTUAL_PROTO=https - LETSENCRYPT_HOST=name.de - LETSENCRYPT_EMAIL=x@y.de - username= #optional - password= #optional networks: - proxy-tier restart: always cron: build: ./app restart: always volumes: - /dataraid/nextcloud/html:/var/www/html entrypoint: /cron.sh depends_on: - db - redis proxy: build: ./proxy restart: always ports: - 443 :443 - 80 :80 environment: - VIRTUAL_PROTO=https - VIRTUAL_PORT=443 labels: com.github.jrcs.letsencrypt_nginx_proxy_companion.nginx_proxy: "true" volumes: - /dataraid/nextcloud/nginx-certs:/etc/nginx/certs:ro - /dataraid/nextcloud/nginx-vhost.d:/etc/nginx/vhost.d - /dataraid/nextcloud/nginx-html:/usr/share/nginx/html - /dataraid/nextcloud/nginx-conf.d:/etc/nginx/conf.d - /var/run/docker.sock:/tmp/docker.sock:ro networks: - proxy-tier letsencrypt-companion: image: jrcs/letsencrypt-nginx-proxy-companion restart: always volumes: - /dataraid/nextcloud/nginx-certs:/etc/nginx/certs - /dataraid/nextcloud/nginx-vhost.d:/etc/nginx/vhost.d - /dataraid/nextcloud/nginx-html:/usr/share/nginx/html - /var/run/docker.sock:/var/run/docker.sock:ro networks: - proxy-tier depends_on: - proxy networks: proxy-tier:   see error messages: bernd@sys-dock:/dataraid/Docker-Configs/nextcloud$ docker-compose up -d Creating network "nextcloud_default" with the default driver Creating network "nextcloud_proxy-tier" with the default driver Creating nextcloud_db_1 ... Creating nextcloud_proxy_1 ... error Creating nextcloud_db_1 ... error Creating nextcloud_collabora_1 ... ERROR: for nextcloud_proxy_1  Cannot start service proxy: error while creating mount source path '/dataraid/nextcloud/nginx-certs' : mkdir /dataraid: read-only file system Creating nextcloud_redis_1 ... done Creating nextcloud_collabora_1 ... done ERROR: for proxy  Cannot start service proxy: error while creating mount source path '/dataraid/nextcloud/nginx-certs' : mkdir /dataraid: read-only file system ERROR: for db  Cannot start service db: error while creating mount source path '/dataraid/nextcloud/mariadb' : mkdir /dataraid: read-only file system ERROR: Encountered errors while bringing up the project.    (/questions/tagged/docker) (show questions tagged 'docker') docker  (/questions/tagged/docker-compose) (show questions tagged 'docker-compose') docker-compose      (/q/53143849) (Short permalink to this question) Share  Share a link to this question     Copy link (https://creativecommons.org/licenses/by-sa/4.0/) (The current license for this post: CC BY-SA 4.0) CC BY-SA 4.0     Follow (70:3:31e,16:d8366cbb7f7653f8,10:1742521647,16:111ff02452558fab,8:53143849,3ab26f51355114c8b907ea2f8439fe2fb6a9c41c3e4540c06d576f74a6e2054a)  Follow this question to receive notifications       (/posts/53143849/revisions) (show all edits to this post) edited (2022-06-23 02:30:27Z) Jun 23, 2022 at 2:30    (/users/6243352/ggorlen) (ggorlen's user avatar)    (/users/6243352/ggorlen) ggorlen (reputation score 57,527) 57.5k (8 gold badges)  8  8 gold badges (112 silver badges)  112  112 silver badges (155 bronze badges)  155  155 bronze badges     asked (2018-11-04 18:08:37Z) Nov 4, 2018 at 18:08   (/users/10604510/speedamaster) (speedAmaster's user avatar)    (/users/10604510/speedamaster) speedAmaster speedAmaster (reputation score) 131 (1 gold badge)  1  1 gold badge (1 silver badge)  1  1 silver badge (4 bronze badges)  4  4 bronze badges        9   Can you post your docker-compose.yml file? – (/users/2340657/searsaw) (3,632 reputation) searsaw  Commented (2018-11-04 18:33:44Z, License: CC BY-SA 4.0) Nov 4, 2018 at 18:33        Doesn't sound like anything to do with docker, more to do with how that drive is configured / mounted. Can you create regular files on the mount (without using Docker)? – (/users/559504/johnharris85) (19,016 reputation) johnharris85  Commented (2018-11-04 18:35:45Z, License: CC BY-SA 4.0) Nov 4, 2018 at 18:35        see my docker-compose.yml – (/users/10604510/speedamaster) (131 reputation) speedAmaster  Commented (2018-11-04 19:38:20Z, License: CC BY-SA 4.0) Nov 4, 2018 at 19:38   (this comment was edited 1 time)          @johnharris85: that is the strange part. I can touch and modify files in that mounted drive... – (/users/10604510/speedamaster) (131 reputation) speedAmaster  Commented (2018-11-04 19:48:41Z, License: CC BY-SA 4.0) Nov 4, 2018 at 19:48      (number of 'useful comment' votes received) 5   Did you mount the dataraid filesystem after docker started? If so, try restarting the docker daemon (systemctl restart docker ) – (/users/596285/bmitch) (265,520 reputation) BMitch  Commented (2018-11-05 23:39:37Z, License: CC BY-SA 4.0) Nov 5, 2018 at 23:39        (Use comments to ask for more information or suggest improvements. Avoid answering questions in comments.)  |  (Expand to show all comments on this post) Show 4 more comments         2 Answers 2   Sorted by:  (/questions/53143849/docker-compose-error-read-only-file-system?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  (70:3:31e,16:d32e3d9599131492,10:1742521647,16:e387522f3a4afcbd,8:60815796,78432f72fe91e11b0b848b8430d9cf9256d65af8e628d9f273aff2fdaf9a85dc) 22  (This answer is not useful)    (70:3:31e,16:c9717f2f58752802,10:1742521647,16:e6c15f61b0d11628,8:60815796,24cf17fcb0184e3530ecf584a0b305afb6d93568a877d347467ebf7c90037b78)      Save this answer.  (Loading when this answer was accepted…)     (/posts/60815796/timeline)    Show activity on this post.    If docker starts before the filesystem gets mounted, you could be seeing issues with the docker engine trying to write to the parent filesystem. You can restart the docker daemon to rule this out (systemctl restart docker in systemd base environments). If restarting the daemon helps, then you can add a dependency between the docker engine and the external filesystem mounts. In systemd, that involves an After= clause in the unit file. E.g. you could create a /etc/systemd/system/docker.service.d/override.conf file containing: [Unit ] After=nfs-client.target   (Note that I'm not sure that nfs-client.target is the correct unit file for your 
filesystem, you'll want to check where it gets mounted.) Another issue I've seen people encounter recently is Snap based docker installs, which run docker inside of another container technology, which would prevent access to paths not explicitly configured in the Snap.   (/a/60815796) (Short permalink to this answer) Share  Share a link to this answer     Copy link (https://creativecommons.org/licenses/by-sa/4.0/) (The current license for this post: CC BY-SA 4.0) CC BY-SA 4.0     Follow (70:3:31e,16:22b9543f0e37f0d6,10:1742521647,16:719652ac3e71b1b1,8:60815796,aa7008d1a1aa1ed7400554fc189db6cafc7300cf8e6889e7cbf4ed5ebb6a1d4b)  Follow this answer to receive notifications       answered (2020-03-23 14:43:34Z) Mar 23, 2020 at 14:43   (/users/596285/bmitch) (BMitch's user avatar)    (/users/596285/bmitch) BMitch BMitch (reputation score 265,520) 266k (50 gold badges)  50  50 gold badges (542 silver badges)  542  542 silver badges (500 bronze badges)  500  500 bronze badges        2 (number of 'useful comment' votes received) 1   That was exactly my issue, had used snap. – (/users/1779348/jesper-kristiansen) (1,979 reputation) Jesper Kristiansen  Commented (2022-10-18 20:32:29Z, License: CC BY-SA 4.0) Oct 18, 2022 at 20:32        The problem was resolved just after re-installing the docker. In my case, the shared storage had been mounted after docker installation. – (/users/6119932/arashmad) (128 reputation) ArashMad  Commented (2023-03-23 16:33:13Z, License: CC BY-SA 4.0) Mar 23, 2023 at 16:33   (this comment was edited 1 time)          (Use comments to ask for more information or suggest improvements. Avoid comments like “+1” or “thanks”.) Add a comment |  (Expand to show all comments on this post)             This answer is useful  (70:3:31e,16:4e71487e946a2aca,10:1742521647,16:388998bb1fc6b50e,8:76344274,87eaf45b247954ece15d121a3e5d2ddfb783357d5a72a48c97caab9f90873278) 0  (This answer is not useful)    (70:3:31e,16:b7b4f78b3e120b33,10:1742521647,16:674a6887105a0a02,8:76344274,4271ceb975a2f075e09c4b0849382a45a3beb3d919be6b26e6b2882f485de050)      Save this answer.  (Loading when this answer was accepted…)     (/posts/76344274/timeline)    Show activity on this post.    For me, changing :ro to :rw in my docker-compose.yml was the key to enabling write permissions. In your case (for example--I'm not sure this is your issue): web: build: ./web restart: always volumes: - /dataraid/nextcloud/html:/var/www/html:ro # change to :rw   With :ro on my case, I saw: $ docker exec --privileged -it x_api bash
root@api# touch foo
touch: cannot touch 'foo': Read-only file system   But after using :rw and restarting the container, touch worked.   (/a/76344274) (Short permalink to this answer) Share  Share a link to this answer     Copy link (https://creativecommons.org/licenses/by-sa/4.0/) (The current license for this post: CC BY-SA 4.0) CC BY-SA 4.0     Follow (70:3:31e,16:21c281545fa578f9,10:1742521647,16:b996864c2a3ffda4,8:76344274,f7bc2bf03e44bcd5985ebd04a3e1f5ca2787771085d4772da69bed9189c6d493)  Follow this answer to receive notifications       answered (2023-05-26 21:29:20Z) May 26, 2023 at 21:29   (/users/6243352/ggorlen) (ggorlen's user avatar)    (/users/6243352/ggorlen) ggorlen ggorlen (reputation score 57,527) 57.5k (8 gold badges)  8  8 gold badges (112 silver badges)  112  112 silver badges (155 bronze badges)  155  155 bronze badges           (Use comments to ask for more information or suggest improvements. Avoid comments like “+1” or “thanks”.) 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