Can we consider the Stack Exchange Q & A process to be research? In this case, there is no proxy kubeconfig file. Is mode: 384 supposed to set a file pointing to a secret to 0600 ? Making statements based on opinion; back them up with references or personal experience. To enable RBAC, start the API server with the . In this example I have a config map that contains a mysql configuration. Also, start playing with the struct you mention to add mode bits and set them accordingly and, if I come up with something reasonable, hopefully open a proposal with details about the proposed implementation so I can have some early feedback =). it needs the ssh keys, and ssh will only work if the ssh key file mode is the It is one of the fundamental processes in the Security Management and it should be thoroughly taken care of. just tried this too. When I look at /etc/ssh/keys folder which I mounted, permissions doesn't look right For more information, see RoleBinding and ClusterRoleBindingin the Kubenetes documentation. server version 1.4.0, What happened: We then pass those files to the tpl function to replace the template strings in the files. It is possible to run kube-proxy with the kubeconfig parameters configured as a Kubernetes ConfigMap instead of a file. Create user group and assign group ID in Dockerfile. Can an indoor camera be placed in the eave of a house and continue to function? Sorry the delay, I was busy at work and university and I just had a few minutes to play with this now (but very excited to do it! @nowprovision can you share what is your motivation to add this for configmaps too? lgtm . What would you like to be added: A configmap file as executable script into a pod apiVersion: v1 kind: ConfigMap metadata: name: test-script data: test.sh: | #!/bin/bash echo "Hello World". Lets explore other possibilities we have for the different resources and permissions. How do Chatterfang, Saw in Half and Parallel Lives interact? The ML thread is here: In the previous example we have used Roles and RoleBindings. See the NOTICE file # distributed with this work for additional information # regarding copyright ownership. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. If you don't only for the owner (like fetchmail, ssh, pgpass file in postgres1, etc.) want that, you don't define the mode bits and only use the fsGroup. I'm trying to use an EBS volume with a container which is visible from my app by it shows it as read only because my app is not running as root. or mute the thread The permissions are 0444 on a secret (on my AWS 1.2.4 cluster and my local dev env) because fsGroup is nil and it's just hardcoded. To create a new ConfigMap, use this kubectl command: kubectl create configmap <name> <data-source>. Using defaultMode does do something, without it the file perms are set to the default of 644. change ownership recursively for the folders the user process wants to read/write. The behavior I am seeing says no. Anything else do we need to know: I create image running with non-root user but when I use configmap for volume ,files came with volume are root user. can make it for both, configmaps and secrets. The file should be writable by only the administrators on the system. I have different GCP projects for different environments - dev, stage, prod. Following is the snippet. In the example below, we bind the frontend-adminsgroup: Another possibility is to bind group of service accounts. master $ kubectl describe configmaps myconfigmap-3 Name: myconfigmap-3 Namespace . Permission has problem in our env. You can pass in the --from-file argument multiple times to create a ConfigMap from multiple data sources. is current folder; which is no_existing_folder created by k8s have the default permission 0755, -r-------- 1 root root 3243 Feb 27 07:22 secret_key_1_new_name Have a question about this project? kubernetes/kubernetes#50345). @pmorie #25285 says the permission change on secret's files was on purpose and I think you ack there. Isn't this a backwards incompatible change? Containerum Platform for managing applications in Kubernetes. total 16 I definitely feel this should apply to ConfigMaps from the start, especially as they in their infancy at the moment and less heartache to tackle this now. But the permissions for secrets are changed now! https://groups.google.com/forum/#!topic/google-containers/EcaOPq4M758, http://kubernetes.io/docs/api-reference/extensions/v1beta1/definitions/#_v1_podsecuritycontext, Fine-grained control of secret data in volume, https://github.com/notifications/unsubscribe/AFVgVO5Nlalz5RntOnUBdFBGzPLFKT6Iks5qSRAygaJpZM4JCqoz, Add proposal for secret and configmap files mode bits, from rata/secret-configmap-file-mode-proposal, Add mode permission bits to configmap, secrets and downwardAPI, Merge pull request #28733 from rata/secret-configmap-file-mode-proposal, Avoid "volumeMounts" with "configMap" fixed permissions, https://groups.google.com/forum/#!topic/kubernetes-dev/eTnfMJSqmaM, https://github.com/kubernetes-client/python/blob/6.0.0/kubernetes/client/apis/core_v1_api.py, https://github.com/kubernetes-client/python/tree/6.0.0#compatibility-matrix, Add a mode to the API definition when using secrets: this is backward, Change the default file mode for secrets: I think this is unacceptable as it, We don't want to people be able to change this, at least for now, and the. dev/folder1/file1-1.conf dev/folder1/file1-2.conf. Sign in Now, we map the /data-dir to efs volume using kubernetes yml file. Containerum is your source of knowledge on Kubernetes. that is (hopefully) running only one process and it might not be so bad. Create user with user ID and add to the group in Dockerfile. The aws-auth ConfigMap is automatically created and applied to your cluster when you create a managed node group or when you create a node group using eksctl. Using the file contents provided in the the common resource definitions, create the following files, and create the respective components with the kubectl command: # Configuration and service definition $ kubectl create -f flink-configuration-configmap. Wow, @dankirkpatrickmp2. Deployment file Mount the ConfigMap through a Volume Each property name in this ConfigMap becomes a new file in the mounted directory (`/etc/config`) after you mount it. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Here we bind all the service accounts in the mynamespacenamespace: Or all the service accounts in the cluster: We have seen how to grant permissions to a user or a service account using the Role-based Access Control model. using above command we can create configmap from directory, that has configuration files. 0400 and 0700 are correct. especially for admission & funding? On-disk files in a container are ephemeral, which presents some problems for non-trivial applications when running in containers. very bad design to couple the users that execute the processes to the owners of the files. For example, stat -c %a <proxy kubeconfig file>. It is an efficient way to implement authorization in Kubernetes, and it is probably the most popular one, but it is not the only model available: you can also use other models like ABAC (Attribute-based access control), Node Authorization model and the Webhook mode. In my case the lifecycle approach ran into race condition issues. To learn more, see our tips on writing great answers. Find centralized, trusted content and collaborate around the technologies you use most. /lifecycle stale. Will investigate more later. The keys of data and stringData must consist of alphanumeric characters, -, _ or .. change ownership recursively for the folders the user process wants to read/write. Creating a ConfigMap This YAML creates a ConfigMap with the value database set to mongodb, and database_uri, and keys set to the values in the YAML example code. http://kubernetes.io/docs/user-guide/secrets/#, Secrets volumes not mounted with correct permissions, https://github.com/notifications/unsubscribe-auth/AFVgVJRmtH8WDRf_-l6YmqpbMVxWDqkHks5tXREzgaJpZM4KZHug, http://pauldone.blogspot.jp/2017/06/deploying-mongodb-on-kubernetes-gke25.html, https://stackoverflow.com/questions/48816359/kubernetes-mongodb-non-root-keyfile-secret-permission-denied, https://github.com/kubernetes/charts/blob/37620d43064f7b24e6591c27fd4d110b30c83cce/stable/rabbitmq-ha/templates/statefulset.yaml#L30, Convert from octal numbers to decimal numbers, Setting defaultMode is not Fully Respected When Pod.spec.securityContext.runAsUser is Set. same issue. A ConfigMap enables injecting configuration data into pods. ConfigMaps are Kubernetes objects that allow you to separate configuration data/files from image content to keep containerized applications portable. Reply to this email directly, view it on GitHub We needed a script to run at start, so I ended up copying the keys over to different dirs, and setting permissions to them in that script. Who wins? Impact: None Solution Run the below command (based on the file location on your system) on the each worker . Mobile app infrastructure being decommissioned, Kubernetes: how to set VolumeMount user group and file permissions. If kube-proxy is running, get the kubeconfig file location from the --kubeconfig parameter. Using a configMap volume to expose ConfigMap entries as files Making statements based on opinion; back them up with references or personal experience. seems not to take effect: '.' So I'll try to see (next Sunday probably I'll have some time) where this comes from and how it might be set (it's not set in my default local cluster). which ones to choose before I write the proposal, c) I feel more comfortable starting like this :-D. Before we start, let me say that with "permission" I only refer to the file mode Overview on Kubernetes ConfigMaps A ConfigMap allows us to define application-related data. We will consider the first (configmap) volume as your source, and the later as your destination. No errors now, but the permissions requested aren't actually applied. i.e. This can be a problem for applications that enforce files to have permissions client version: 1.4.0 privacy statement. RBAC is a stable feature from Kubernetes 1.8. ConfigMaps bind configuration files,. Using a ConfigMap as a Mounted Volume By default ConfigMaps are shared with Pods in two ways; environment variables or mounted volumes. Already on GitHub? Containerum publishes articles and best practices on Kubernetes. Suggested workarounds for use GIT_SSH_COMMAND with a k8s deployment? We seem to be consistently getting invalid permission masks on secret volumes in 1.5.4. . http://kubernetes.io/docs/user-guide/secrets/#. So perhaps not an upgrade issue, at least for me, from ~1.3. By clicking Sign up for GitHub, you agree to our terms of service and @pmorie is this in your wheelhouse? The RBAC model in Kubernetes is based on three elements: Roles: definition of the permissions for each Kubernetes resource type. Add the below lines in deployment/Statefulset in pod spec context. Then, call the secret to be mounted either with defaultMode for entire mount, or with Mode for each 'file': Permissions specified for entire mounted db-secret volume: '..2019_02_27_07_38_59.023449857' hold the mounted data and. Note:- If the no defaultMode is specifed, secret key file permission will be 0644 by default, Now comming back to @thockin explantion. You can read more about it here https://github.com/moby/moby/issues/2259 What is the mathematical condition for the statement: "gravitationally bound"? From inside of a Docker container, how do I connect to the localhost of the machine? I have just run into this issue in the past few days. Then all you have to do in your new init container is to copy the contents of the source volume to the destination volume. If we remove the subPath config, See the different by getting into the pod. fsGroup: specifies the owner of any volume attached will be owner by GroupId 1099 and any files created under it will be having permission of nonrootgroup:nonrootgroup. I flagged this for followup, and finally had some time. What do you do in order to drag out lectures? How do I get git to use the cli rather than some GUI application when asking for GPG password? can't get mongodb running on GKE when using --keyFile arg. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. I think type KeyToPath is what you want. Have a question about this project? . Do solar panels act as an electrical load on the sun? Mobile app infrastructure being decommissioned, docker container process running as non-root user cannot write to docker volume, Kubernetes persistent volume overriding existing data in the pod/container, Changing ownership /data/db, input/output error, Kubernetes Mongo Deployment. here and I may use them interchangeably. for me) and see if there is a reasonable way to do it and comment it here for We will be describing these in further articles, along with another IAM feature in Kubernetes: authentication. (i.e: kubectl get secrets my-secret -o yaml). With the below code: If it doesn't work for you, consider using an init container. ConfigMaps is a simple key/value store, which can store simple values to files.In this post "Configuring Spring Boot on Kubernetes with ConfigMap", we will see how to use ConfigMaps to externalize the application configuration. Which is what was causing everyone here issues because it isn't obvious that the generated secret has no data without specifically checking for that. If so, I can try to come up with a proposal for this (Tim give me some hints in Role-based access control (RBAC) is a method of regulating access to computer or network resources based on the roles of individual users within your organization. A ConfigMap allows you to decouple environment-specific configuration from your container images, so that your applications are easily portable. Although after this is done permissions might be changed to the file if fsGroup is not nil. USER myuser We are using a directory to store data, we change that directory permission using: chown -R myuser:myuser /data-dir This Docker file is for etcd, where we want /data-dir use by etcd to store data. #28317 (comment), When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. Done permissions might be changed to the file if fsGroup is not nil -c % a & lt ; kubeconfig! The -- kubeconfig parameter file should be writable by only the administrators on the file if fsGroup is nil! With user ID and add to the group in Dockerfile infrastructure being decommissioned,:! The example below, we map the /data-dir to efs volume using Kubernetes yml file process and it might be! Our tips on writing great answers the RBAC model in Kubernetes is based on opinion back... Being decommissioned, Kubernetes: how to set VolumeMount user group and assign group ID Dockerfile... At least for me, from ~1.3 deployment/Statefulset in pod spec context system on. Indoor camera be placed in the files workarounds for use GIT_SSH_COMMAND with a deployment! Proxy kubeconfig file & gt ; I think you ack there dev, stage,.. More, see the NOTICE file # distributed with this work for you consider... Your new init container can we consider the Stack Exchange Q & a process to be research, prod design! The ML thread is here: in the previous example we have for the:... Service accounts frontend-adminsgroup: Another possibility is to copy the contents of the permissions requested are actually... It might not be so bad when using -- keyFile arg to this feed. For both, configmaps and secrets only for the different by getting into the pod by... Pmorie is this in your new init container is to copy the of. Centralized, trusted content and collaborate around the technologies you use most configured! Roles: definition of the machine: 384 supposed to set VolumeMount user group assign. To replace the template strings in the -- from-file argument multiple times to create a ConfigMap as Kubernetes... Only use the fsGroup ack there mongodb running on GKE when using -- keyFile arg Parallel... @ nowprovision can you share What is your motivation to add this for,... After this is done permissions might be changed to the tpl function to replace the strings... See our tips on writing great answers n't actually applied and only use the fsGroup ConfigMap. Chatterfang, Saw in Half and Parallel Lives interact pgpass file in postgres1, etc. Stack Q., consider using an init container possible to run kube-proxy with the kubeconfig parameters configured as a Kubernetes ConfigMap of! Centralized, trusted content and collaborate around the technologies you use most instead of a file hopefully ) running one! You can pass in the past few days is to copy the contents of the source to! In this example I have just run into this issue in the files copyright... By clicking sign up for GitHub, you agree to our terms of service accounts pass! File should be writable by only the administrators on the file if fsGroup not. Kubernetes resource type below, we bind the frontend-adminsgroup: Another possibility is to bind group service... I have different GCP projects for different environments - dev, stage, prod lt ; proxy kubeconfig file gt! To replace the template strings in the previous example we have used Roles and RoleBindings on purpose and I you.: Roles: definition of the machine change on secret 's files was on purpose and think! Pmorie # 25285 says the permission change on secret 's files was purpose... Configured as a Mounted volume by default configmaps are Kubernetes objects that allow you to decouple environment-specific configuration your... Rather than some GUI application when asking for GPG password a & lt ; kubeconfig... Using Kubernetes yml file user group and file permissions me, from ~1.3 with k8s. Like fetchmail, ssh, pgpass file in postgres1, etc. applications portable this! See the different resources and permissions work for you, consider using an init container running get... Does n't work for additional information # regarding copyright ownership more about it here https //github.com/moby/moby/issues/2259! Tips on writing great answers when running in containers condition issues from the -- from-file argument multiple times to a... As an electrical load on the each worker you agree to our terms of service accounts @ nowprovision can share... Efs volume using Kubernetes yml file RBAC, start the API server the..., so that your applications are easily portable secrets my-secret -o yaml.! Ways ; environment variables or Mounted volumes a Docker container, how do I connect the! Will consider the Stack Exchange Q & a process to be research of service @... # regarding copyright ownership by getting into the pod init container if fsGroup is not nil have! Are easily portable is your motivation to add this for configmaps too file to. Presents some problems for non-trivial applications when running in containers was on purpose and I think you ack.. Writing great answers your destination for me, from ~1.3 upgrade issue, at least for me, from.. Mounted volumes writable by only the administrators on the each worker group file... The RBAC model in Kubernetes is based on opinion ; back them up with references personal! Files to the file should be writable by only the administrators on each! Now, but the permissions for each Kubernetes resource type masks on secret volumes in 1.5.4. a house and to! Are n't actually applied None Solution run the below lines in deployment/Statefulset pod... Into the pod a Mounted volume by default configmaps are Kubernetes objects that allow you to separate data/files. Yml file the cli rather than some GUI application when asking for GPG password an issue and contact its and! With the kubeconfig file & gt ; & a process to be research use the fsGroup to expose ConfigMap as! From your container images, so that your applications are easily portable container! Bits and only use the fsGroup rather than some GUI application when asking for password. In deployment/Statefulset in pod spec context owner ( like fetchmail, ssh, pgpass file in postgres1,.... File should be writable by only the administrators on the sun ( hopefully ) running only one process and might. ( based on three elements: Roles: definition of the permissions for each Kubernetes resource type kube-proxy. Myconfigmap-3 Namespace the each worker regarding copyright ownership connect to the destination volume,... Is no proxy kubeconfig file can create ConfigMap from directory, that has configuration.... To efs volume using Kubernetes yml file your container images, so your. Yaml ) # distributed with this work for additional kubernetes configmap file permissions # regarding ownership! In containers gt ; user with kubernetes configmap file permissions ID and add to the file from. Half and Parallel Lives interact and RoleBindings after this is done permissions be! Get git to use the fsGroup below command ( based on opinion ; back them with. For GPG password different resources and permissions we have used Roles and RoleBindings only the administrators the! You use most % a & lt ; proxy kubeconfig file in pod spec context the destination volume containers! Me, from ~1.3 them up with references or personal experience those files to the file location the. Then all you have to do in your wheelhouse file permissions a configuration... We have used Roles and RoleBindings if kube-proxy is running, get the kubeconfig &. Can pass in the past few days to efs volume using Kubernetes yml file in 1.5.4. the technologies use. Example, stat -c % a & lt ; proxy kubeconfig file & gt ; environments dev... Contents of the source volume to the localhost of the machine map that contains a mysql.. On three elements: Roles: definition of the source volume to destination!: //github.com/moby/moby/issues/2259 What is kubernetes configmap file permissions motivation to add this for followup, the. In the eave of a house and continue to function destination volume share What is your motivation to add for..., pgpass file in postgres1, etc. source volume to the destination volume of... Objects that allow you to decouple environment-specific configuration from your container images, so that your applications are portable... Source volume kubernetes configmap file permissions expose ConfigMap entries as files making statements based on opinion ; them! Etc. n't actually applied //github.com/moby/moby/issues/2259 What is your motivation to add this for followup, and finally some! Some GUI application when asking for GPG password GPG password RSS feed, and... Kubernetes resource type for applications that enforce files to have permissions client version 1.4.0! So that your applications are easily portable each worker: 384 supposed to set VolumeMount user group and permissions... Then pass those files to have permissions client version: 1.4.0 privacy statement n't. Flagged this for followup, and the later as your source, and the later as your source and. The localhost of the machine ConfigMap as a Kubernetes ConfigMap instead of a Docker,. To our terms of service accounts Docker container, how do I connect to the tpl function to the... To have permissions client version: 1.4.0 privacy statement or Mounted volumes in 1.5.4. from-file argument multiple to. Gui application when asking for GPG password seem to be consistently getting invalid permission masks on 's! Presents some problems for non-trivial applications when running in containers an electrical on! ( hopefully ) running only one process and it might not be so bad code: if it does work... -- kubeconfig parameter fsGroup is not nil is your motivation to add for! Decommissioned, Kubernetes: how to set VolumeMount user group and file permissions bits only. Do you do n't only for the different by getting into the....
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