Spring Cloud Config Server Not picking changes - spring

I am trying to setup spring config cloud using local file system.
Below is my config on cloud server.
server.port=8888
spring.profiles.active=native
spring.cloud.config.server.native.searchLocations=classpath:/
Bootstrap.properties on client app is as shown below
spring.application.name=hello-world
spring.cloud.config.uri=http://localhost:8888
management.endpoints.web.exposure.include=*
I have also created hello-world.yml on class path for the hello-world spring boot application with property, test: Hello World
Followed below steps to make use of config server.
Step 1: Update the config file and start cloud config server. Able to
see config http://localhost:8888/hello-world/default
Step 2: Start client app hello-world, client app able to read the
test property file from cloud config server.
Step 3: Make changes to config by updating test: Good Bye on
hello-world.yaml.
At this moment, if I check
http://localhost:8888/hello-world/default ,it still shows old value.
Step 4: Run /actuator/refresh on client app. But it won't detect
any change on config server.
The new changes are reflected only if I restart the cloud config server.
Is there any configuration issue causing the cloud config server to unable to listen to changes ?
I could see o.s.cloud.commons.util.InetUtils : Cannot determine local hostname INFO log on cloud config app.

First of all I followed the same exact steps you followed and got the same issue, after almost day of search and study on the matter found out the followings,
we shouldn't use classpath:/<whatever> for
spring.cloud.config.server.native.searchLocations
because when we use so and build the project and run the location refers to the directory inside the generated .jar file, so we will not be able to update it in runtime.
To confirm this you can stop config server, open you .jar archive and delete hello-world.yml file then try http://localhost:8888/hello-world/default you will get default null responses
So we have to use some other locations for spring.cloud.config.server.native.searchLocations either with full directory path or just directory from app running location
Examples
For full path in windows use file:///full-path
spring.cloud.config.server.native.searchLocations: file:///E:\configs
Just for a directory (which will search project root directory if you running from IDE, if running jar then target directory or jar location spring.cloud.config.server.native.searchLocations: configs
spring.cloud.config.server.native.searchLocations: configs\whatever
we can configure multiple locations too as follows, spring.cloud.config.server.native.searchLocations: file:///E:\configs, configs

Related

How to configure Spring Cloud Config Server to use cloned configuration files

My application.properties files of my Cloud Config Server looks like this.
config.source=Local Cloud Server #just to check where config come from
server.port=8012
encrypt.key=xxxxxxxxxxxxxx
spring.profiles.active=staging
spring.application.name=my-config-server
# Git Backend
spring.cloud.config.server.git.username=MY_USERNAME
spring.cloud.config.server.git.password=ghp_MY-DEV-ACCESS-TOKEN
spring.cloud.config.server.git.uri=https://github.com/my-username/app-config
spring.cloud.config.server.git.clone-on-start=true
spring.cloud.config.server.git.basedir=file://${user.dir}/cloned_configurations
On startup a new folder "cloned_configuration" is created inside of Cloud Config Server folder. I see all of my propertie files cloned form github with correct values.
But for some reason none of these are used. For e.g config.source must have the value "GitHub" because the cloned application.repository has an entry
config.source=GitHub
But on application start I see "Local Cloud Server". All other settings are also not used from cloned properties.
With Postman I can receive all Configs without any issues. But none of theme are used by my Config Server or any of my other webservices.All webservices and the config server using their own application.properties file.
What I do wrong?
You probably need to move your config server properties into your bootstrap.properties file instead of application.properties.
spring.cloud.config.server.git.username=MY_USERNAME
spring.cloud.config.server.git.password=ghp_MY-DEV-ACCESS-TOKEN
spring.cloud.config.server.git.uri=https://github.com/my-username/app-config
spring.cloud.config.server.git.clone-on-start=true
spring.cloud.config.server.git.basedir=file://${user.dir}/cloned_configurations
https://cloud.spring.io/spring-cloud-config/multi/multi__spring_cloud_config_client.html

How to prevent Spring Config to reset my local git repository to origin/master

I am using Spring Config to share in a git server the configuration for some Spring Boot microservices.
It works great but when I am traveling I have to work offline sometimes.
I have configured Spring Config microservice local profile to get the config from my local git, (file:) and not to be HTTP git server, so I can change config and test without needing access to main git server.
The problem is that as I am not able to do a "git push" to push the change to main repository, Spring Confgig notes it and shows this message:
The local repository is dirty or ahead of origin. Resetting it to origin/master.
and resets it deleting my last local commit with last config changes.
How can I make Spring Config just to get the last committed configuration in my local git ignoring if it is pushed or not to the main server?
I had a similar problem.
(the difference is that I am not using Spring Config microservice, but runnging spring configuration server as a stand alone application)
But this should work for you as well:
Instead of launching local configuration server with a local git repository (file:) I have launched it with native spring profile.
spring:
profiles:
active: native
cloud:
config:
server:
native:
searchLocations: file:///path/to/local/git/repository
So now content of local repository is served and no reset is done on access
Actually going through spring-cloud-config source code you will see:
if (!isClean(git, label)) {
this.logger.warn(
"The local repository is dirty or ahead of origin. Resetting"
+ " it to origin/" + label + ".");
resetHard(git, label, LOCAL_BRANCH_REF_PREFIX + label);
}
Solution
So it will always try to do this and the only work around will be similar to this answer:
How spring cloud config use local property override remote property
You will need to commit:
spring:
cloud:
config:
allowOverride: true
overrideNone: false
To the configuration properties you are using. e.g.:local/my-app.properties. If you do have a remote repo for storing all the properties, make sure it is merged to master.
Then you could change any application property as you wish in application.yml/application.properties in your Spring Boot app. It won't get overriden by the remote properties file.
Alternative
Alternatively, you could just remove the config file for the environment you are working on as dev environment. In my example above, you could just remove local/my-app.properties from remote repo and commit master. So that it will never bother overriding local application properties from there because no properties files exist for cloud-config.
Please comment if anything is unclear so that I could improve the instruction.
You can use an identical directory as not only a file system backend and also a git repository for properties files. You should make 2 bootstrap.properties files for config server. One is for the file backend and the other is for the git repository. For example, I want to use a file system backend for develop and a git repository for production. I made bootstarp-dev.properties and bootstrap-prd.properties.
## bootstarp-dev.properties
server.port=8887 // If you want to launch both a config server for dev and a config server for prd, you must assign different ports.
spring.cloud.config.server.native.searchLocations=file://PATH_OF_YOUR_DIRECTORY
## bootstarp-prd.properties
server.port=8888
spring.cloud.config.server.git.uri=YOUR_GIT_URL
If you launch your config server with -Dspring.profiles.active=dev,native parameter, the config sever access your properties files as local files.
If you launch your config server with -Dspring.profiles.active=prd parameter, the config sever access your properties files as git files.
Done.
How can I make Spring Config just to get the last committed configuration in my local git ignoring if it is pushed or not to the main server?
This is what --assume-unchaged is for.
--assume-unchaged
Raise the --assume-unchaged flag on this file so it will stop tracking changes on this file
--[no-]assume-unchanged
When this flag is specified, the object names recorded for the paths are not updated.
Instead, this option sets/unsets the assume unchanged bit for the paths.
When the assume unchanged bit is on, the user promises not to change the file and allows Git to assume that the working tree file matches what is recorded in the index. If you want to change the working tree file, you need to unset the bit to tell Git. This is sometimes helpful when working with a big project on a filesystem that has very slow lstat(2) system call (e.g. cifs).
Git will fail (gracefully) in case it needs to modify this file in the index e.g. when merging in a commit; thus, in case the assumed-untracked file is changed upstream, you will need to handle the situation manually.

spring boot logging.file not getting created in openshift

I want to export the logs of a spring boot application into a file in order to preserve it in a persistent volume.
In application.properties i added logging.file=myapplication.log
When i build and run the docker image locally, the myapplication.log file gets created in the container. But when i push the image to the Openshift internal registry and do
`oc new-app --name=<app> <image-name>`
the container gets created and works fine but the log file does not exist. I also tried inserting -Dlogging.file=myapplication.log in the dockerfile which also works locally but not in openshift.
What i am doing wrong! I am going insane!

Spring Cloud Config Server - How to download binary file

I have a Spring Cloud Config Server with the usual properties files in the git repo:
|--application.yml
|--app1.yml
I also added a binary file
|--mybinaryfile
Normally to access the properties I would ask for
http://myconfigserver/app1/dev
Is it possible to download the binaryfile through the config server? I have tried with
http://myconfigserver/mybinaryfile
and
http://myconfigserver/mybinaryfile/dev
but they didn't work.
I found it:
http://myconfigserver/*/dev/master/mybinaryfile

spring cloud config properties from both local filesystem and git repo

I am using spring cloud config server to host a centralized location for all the property files configurations to be used in the project.
I tried using the config files from a local file system using below and it works fine:
spring.profiles.active=native
spring.cloud.config.server.native.searchLocations=file://${HOME}/Documents/test-config/cloud-config-properties/
I also used the git repo using: spring.cloud.config.server.git.uri=ssh://xxxxxx.com:7999/test/cloud-config-properties.git
I would like to try using a combination of this in my project.
Example - for dev/test profile - i would like to use from local filesystem and for the production - I would like to use Git repository.
I enabled both the git uri and native profiles in my application.properties in config server application. But the properties are always picked up from the local file system. Is this possible?
Not supported out of the box, however there is a workaround for this. You can define the basedir for the configuration server, which is where it saves the files it fetches from the remote server, by setting the property (in the config server):
spring.cloud.config.server.git.basedir=<your_dir>
If you are working with docker, you can map this directory to the host filesystem.
Now whatever file you put in there will be picked up by configuration-server if it matches any of the application/profile in the request. For example you could put a file there called application-dynamic.properties, and have all your clients use dynamic as the last profile, for example
spring.profiles.active=systesting,dynamic
This way everything you will put in application-dynamic.properties will override whatever is defined in your config repo.
One thing to notice though is that you need to add the file only after configuartion server starts, because it deletes this folder during startup.
Needles to say, it's not a good practice doing this in production (for example a restart will cause the file to be deleted), but for test/dev this is the best option.

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