Say I have two metrics in prometheus, both counters:
requests_processed_total
requests_failed_total
They both have a matching service label. Example:
requests_processed_total{service="news"} 1097
requests_processed_total{service="store"} 487
requests_failed_total{service="news"} 23
requests_failed_total{service="store"} 89
How to query the requests_failed_total, but only for services whose request_processed_total > 1000.
I'm expecting the following response:
requests_failed_total{service="news"} 23
# Note that the "store" service is excluded
requests_failed_total and on(service) requests_processed_total > 1000
https://prometheus.io/docs/prometheus/latest/querying/operators/#logical-set-binary-operators
https://prometheus.io/docs/prometheus/latest/querying/operators/#one-to-one-vector-matches
If you are using Grafana you can do the following:
(1) Create a dashboard
(2) Click on Dashboard settings > Variables > New
(3) Create a variable with the following:
Name = service
Type = Query
Data source = Prometheus
Query = query_result(request_processed_total>5)
Regex = /service="(.*)"/
(4) Use the "service" variable to show the "requests_failed_total" metrics in any panel (you can also use the "repeat for " Grafana feature.
You can use the HTTP API to do this.
The following command will find services with request_processed_total>1000:
curl --silent --user USER:PASS --globoff --request GET "https://PROMETHEUS-SERVER/query?query=request_processed_total>1000" | jq --raw-output '.data.result[].metric.service'
And the following command will show requests_failed_total for a given service:
curl --silent --user USER:PASS --globoff --request GET "https://PROMETHEUS-SERVER/query?query=request_failed_total{service=\"SERVICE\"}" | jq --raw-output '.data.result[].value[1]'
So if you take both you get what you want:
for s in $(curl --silent --user USER:PASS --globoff --request GET "https://PROMETHEUS-SERVER/query?query=request_processed_total>1000" | jq --raw-output '.data.result[].metric.service')
do
curl --silent --user USER:PASS --globoff --request GET "https://PROMETHEUS-SERVER/query?query=request_failed_total{service=\"$s\"}" | jq --raw-output '.data.result[] | .metric.service + " " + .value[1]'
done
I have one shell script when i execute it showing only 64 tags from 300 tags docker hub.
Here is the below command which i'm executing in shell script through curl.
IMAGE_TAGS=$(curl -s -H "Authorization: JWT ${HUB_TOKEN} https://hub.docker.com/v2/repositories/$username/issues/tags/?page_size=300" | jq --raw-output '.results[] | .name')
Even after giving page_size also it is not showing my all tags
Note :- Tags using for Private Repositories
Please help me how can i solve it
Try API version 1 which help me to get all the tags
https://registry.hub.docker.com/v1/repositories/mysql/tags open in browser and you can modify it as per your need
Or have a look to Github https://gist.github.com/robv8r/fa66f5e0fdf001f425fe9facf2db6d49 This is exactly what you want
UPDATE
Add this in a shell script file
#!/usr/bin/env bash
docker-tags() {
arr=("$#")
for item in "${arr[#]}";
do
tokenUri="https://auth.docker.io/token"
data=("service=registry.docker.io" "scope=repository:$item:pull")
token="$(curl --silent --get --data-urlencode ${data[0]} --data-urlencode ${data[1]} $tokenUri | jq --raw-output '.token')"
listUri="https://registry-1.docker.io/v2/$item/tags/list"
authz="Authorization: Bearer $token"
result="$(curl --silent --get -H "Accept: application/json" -H "Authorization: Bearer $token" $listUri | jq --raw-output '.')"
echo $result
done
}
docker-tags "<YOUR_DOCKER_IMAGE_NAME>"
Replace <YOUR_DOCKER_IMAGE_NAME> with your docker image.
have a look to this for more info Listing the tags of a Docker image on a Docker hub through the HTTP API
the Docker Registry v2 has an API endpoint to delete an image
DELETE /v2/<name>/manifests/<reference>
https://github.com/docker/distribution/blob/master/docs/spec/api.md#deleting-an-image
However the doc says:
For deletes, reference must be a digest or the delete will fail.
Indeed, using a tag does not work and returns a 405 Operation Not Supported
The problem is, there doesn't seem to be any endpoint to get the digest of an image.
The endpoints to list images, and tags only list those.
Trying to get the manifest with
GET /v2/<name>/manifests/<reference>
using the tag as <reference>I see that a Docker-Content-Digest header is set with a digest which the doc says is
Docker-Content-Digest: Digest of the targeted content
for the request.
while the body contains a bunch of blobSum: <digest>
If I try using the Header digest value, with
GET /v2/<name>/manifests/<reference>
and the digest as <reference>, I get a 404.
the digest looks like: sha256:6367f164d92eb69a7f4bf4cab173e6b21398f94984ea1e1d8addc1863f4ed502
and I tried with and without the sha256 prefix. but no luck
So how am I supposed to get the digest of the image I want to delete, to delete it?
curl -u login:password -H "Accept: application/vnd.docker.distribution.manifest.v2+json" -X GET https://registry.private.com/v2/<name>/manifests/<tag>
json > config > digest
Not a trivial operation in Docker API right now but I hope this procedure helps:
Create a file and give it a name, for me it will be delete-image.sh:
#!/bin/bash
# Inspired by: https://gist.github.com/jaytaylor/86d5efaddda926a25fa68c263830dac1
set -o errexit
if [ -z "$1" ]
then
echo "Error: The image name arg is mandatory"
exit 1
fi
registry='localhost:5000'
name=$1
curl -v -sSL -X DELETE "http://${registry}/v2/${name}/manifests/$(
curl -sSL -I \
-H "Accept: application/vnd.docker.distribution.manifest.v2+json" \
"http://${registry}/v2/${name}/manifests/$(
curl -sSL "http://${registry}/v2/${name}/tags/list" | jq -r '.tags[0]'
)" \
| awk '$1 == "Docker-Content-Digest:" { print $2 }' \
| tr -d $'\r' \
)"
Give the permission to that file so that it can be executed;
sudo chmod u+x ./delete-image.sh
./delete-image.sh <your-image-name>
After deleting the image, collect the garbage;
docker exec -it registry.localhost bin/registry \
garbage-collect /etc/docker/registry/config.yml
Now delete the folder for that image (and I'm assuming that you created a volume previously);
sudo rm -rf ${HOME}/registry/docker/registry/v2/repositories/<your-image-name>
If you have not created a volume, you may have to enter the container to delete that folder. But, in any case, it's a good idea to restart the container;
docker restart registry.localhost
Procedure not recommended for production environments.
I hope that we will have better support for these operations natively in the Docker API in the future.
I'm using docker registry v1 and I'm interested in migrating to the newer version, v2. But I need some way to get a list of images present on registry; for example with registry v1 I can execute a GET request to http://myregistry:5000/v1/search? and the result is:
{
"num_results": 2,
"query": "",
"results": [
{
"description": "",
"name": "deis/router"
},
{
"description": "",
"name": "deis/database"
}
]
}
But I can't find on official documentation something similar to get a list of image on registry. Anybody knows a way to do it on new version v2?
For the latest (as of 2015-07-31) version of Registry V2, you can get this image from DockerHub:
docker pull distribution/registry:master
List all repositories (effectively images):
curl -X GET https://myregistry:5000/v2/_catalog
> {"repositories":["redis","ubuntu"]}
List all tags for a repository:
curl -X GET https://myregistry:5000/v2/ubuntu/tags/list
> {"name":"ubuntu","tags":["14.04"]}
If the registry needs authentication you have to specify username and password in the curl command
curl -X GET -u <user>:<pass> https://myregistry:5000/v2/_catalog
curl -X GET -u <user>:<pass> https://myregistry:5000/v2/ubuntu/tags/list
you can search on
http://<ip/hostname>:<port>/v2/_catalog
Get catalogs
Default, registry api return 100 entries of catalog, there is the code:
When you curl the registry api:
curl --cacert domain.crt https://your.registry:5000/v2/_catalog
it equivalents with：
curl --cacert domain.crt https://your.registry:5000/v2/_catalog?n=100
This is a pagination methond.
When the sum of entries beyond 100, you can do in two ways:
First: give a bigger number
curl --cacert domain.crt https://your.registry:5000/v2/_catalog?n=2000
Second: parse the next linker url
curl --cacert domain.crt https://your.registry:5000/v2/_catalog
A link element contained in response header:
curl --cacert domain.crt https://your.registry:5000/v2/_catalog
response header:
Link: </v2/_catalog?last=pro-octopus-ws&n=100>; rel="next"
The link element have the last entry of this request, then you can request the next 'page':
curl --cacert domain.crt https://your.registry:5000/v2/_catalog?last=pro-octopus-ws
If the response header contains link element, you can do it in a loop.
Get Images
When you get the result of catalog, it like follows:
{
"repositories": [
"busybox",
"ceph/mds"
]
}
you can get the images in every catalog:
curl --cacert domain.crt https://your.registry:5000/v2/busybox/tags/list
returns:
{"name":"busybox","tags":["latest"]}
The latest version of Docker Registry available from https://github.com/docker/distribution supports Catalog API. (v2/_catalog). This allows for capability to search repositories
If interested, you can try docker image registry CLI I built to make it easy for using the search features in the new Docker Registry distribution (https://github.com/vivekjuneja/docker_registry_cli)
This has been driving me crazy, but I finally put all the pieces together. As of 1/25/2015, I've confirmed that it is possible to list the images in the docker V2 registry ( exactly as #jonatan mentioned, above. )
I would up-vote that answer, if I had the rep for it.
Instead, I'll expand on the answer. Since registry V2 is made with security in mind, I think it's appropriate to include how to set it up with a self signed cert, and run the container with that cert in order that an https call can be made to it with that cert:
This is the script I actually use to start the registry:
sudo docker stop registry
sudo docker rm -v registry
sudo docker run -d \
-p 5001:5001 \
-p 5000:5000 \
--restart=always \
--name registry \
-v /data/registry:/var/lib/registry \
-v /root/certs:/certs \
-e REGISTRY_HTTP_TLS_CERTIFICATE=/certs/domain.crt \
-e REGISTRY_HTTP_TLS_KEY=/certs/domain.key \
-e REGISTRY_HTTP_DEBUG_ADDR=':5001' \
registry:2.2.1
This may be obvious to some, but I always get mixed up with keys and certs. The file that needs to be referenced to make the call #jonaton mentions above**, is the domain.crt listed above. ( Since I put domain.crt in /root, I made a copy into the user directory where it could be accessed. )
curl --cacert ~/domain.crt https://myregistry:5000/v2/_catalog
> {"repositories":["redis","ubuntu"]}
**The command above has been changed: -X GET didn't actually work when I tried it.
Note: https://myregistry:5000 ( as above ) must match the domain given to the cert generated.
We wrote a CLI tool for this purpose: docker-ls It allows you to browse a docker registry and supports authentication via token or basic auth.
Here is a nice little one liner (uses JQ) to print out a list of Repos and associated tags.
If you dont have jq installed you can use: brew install jq
# This is my URL but you can use any
REPO_URL=10.230.47.94:443
curl -k -s -X GET https://$REPO_URL/v2/_catalog \
| jq '.repositories[]' \
| sort \
| xargs -I _ curl -s -k -X GET https://$REPO_URL/v2/_/tags/list
Install registry:2.1.1 or later (you can check the last one, here) and use GET /v2/_catalog to get list.
https://github.com/docker/distribution/blob/master/docs/spec/api.md#listing-repositories
Lista all images by Shell script example:
https://gist.github.com/OndrejP/a2386d08e5308b0776c0
I had to do the same here and the above works except I had to provide login details as it was a local docker repository.
It is as per the above but with supplying the username/password in the URL.
curl -k -X GET https://yourusername:yourpassword#theregistryURL/v2/_catalog
It comes back as unformatted JSON.
I piped it through the python formatter for ease of human reading, in case you would like to have it in this format.
curl -k -X GET https://yourusername:yourpassword#theregistryURL/v2/_catalog | python -m json.tool
Here's an example that lists all tags of all images on the registry. It handles a registry configured for HTTP Basic auth too.
THE_REGISTRY=localhost:5000
# Get username:password from docker configuration. You could
# inject these some other way instead if you wanted.
CREDS=$(jq -r ".[\"auths\"][\"$THE_REGISTRY\"][\"auth\"]" .docker/config.json | base64 -d)
curl -s --user $CREDS https://$THE_REGISTRY/v2/_catalog | \
jq -r '.["repositories"][]' | \
xargs -I #REPO# curl -s --user $CREDS https://$THE_REGISTRY/v2/#REPO#/tags/list | \
jq -M '.["name"] + ":" + .["tags"][]'
Explanation:
extract username:password from .docker/config.json
make a https request to the registry to list all "repositories"
filter the json result to a flat list of repository names
for each repository name:
make a https request to the registry to list all "tags" for that "repository"
filter the stream of result json objects, printing "repository":"tag" pairs for each tag found in each repository
Using "/v2/_catalog" and "/tags/list" endpoints you can't really list all the images. If you pushed a few different images and tagged them "latest" you can't really list the old images! You can still pull them if you refer to them using digest "docker pull ubuntu#sha256:ac13c5d2...". So the answer is - there is no way to list images you can only list tags which is not the same
I wrote an easy-to-use command line tool for listing images in various ways (like list all images, list all tags of those images, list all layers of those tags).
It also allows you to delete unused images in various ways, like delete only older tags of a single image or from all images etc. This is convenient when you are filling your registry from a CI server and want to keep only latest/stable versions.
It is written in python and does not need you to download bulky big custom registry images.
If some on get this far.
Taking what others have already said above. Here is a one-liner that puts the answer into a text file formatted, json.
curl "http://mydocker.registry.domain/v2/_catalog?n=2000" | jq . - > /tmp/registry.lst
This looks like
{
"repositories": [
"somerepo/somecontiner",
"somerepo_other/someothercontiner",
...
]
}
You might need to change the `?n=xxxx' to match how many containers you have.
Next is a way to automatically remove old and unused containers.
This threads dates back a long time, the most recents tools that one should consider are skopeo and crane.
skopeo supports signing and has many other features, while crane is a bit more minimalistic and I found it easier to integrate with in a simple shell script.
Docker search registry v2 functionality is currently not supported at the time of this writing. See discussion since Feb 2015: "propose registry search functionality #206" https://github.com/docker/distribution/issues/206
I wrote a script, view-private-registry, that you can find: https://github.com/BradleyA/Search-docker-registry-v2-script.1.0
It is not pretty but it gets the information needed from the private registry.
Example of output from view-private-registry:
$ view-private-registry`
busybox:latest
gcr.io/google_containers/etcd:2.0.9
gcr.io/google_containers/hyperkube:v0.21.2
gcr.io/google_containers/pause:0.8.0
google/cadvisor:latest
jenkins:latest
logstash:latest
mongo:latest
nginx:latest
python:2.7
redis:latest
registry:2.1.1
stackengine/controller:latest
tomcat:7
tomcat:latest
ubuntu:14.04.2
Number of images: 16
Disk space used: 1.7G /mnt/three/docker-registry/registry-data
One liner bash to list all images with their tags:
curl --user user:pass https://myregistry.com/v2/_catalog | jq .repositories | sed -n 's/[ ",]//gp' | xargs -L1 -IIMAGE curl -s --user user:pass https://myregistry.com/v2/IMAGE/tags/list | jq '. as $parent | .tags[] | $parent.name + ":" + . '
Two lines to search for something in the image name:
search=my_container_part_name
curl --user user:pass https://registry.medworx.io/v2/_catalog | jq .repositories | sed -n '/'"$search"'/{s/[ ",]//gp;}' | xargs -L1 -IIMAGE curl -s --user user:pass https://registry.medworx.io/v2/IMAGE/tags/list | jq '. as $parent | .tags[] | $parent.name + ":" + . '
replace: user, pass and myregistry.com accordingly
uses curl, sed, xargs and jq and is hard to understand... but it does the job. It produces one call per image + 1.
If you can ssh or attach to the docker registry container, just browse the filesystem to look for things you want, like:
kubectl exec -it docker-registry-0 -- /bin/sh
ls /var/lib/registry/docker/registry/v2/repositories
ls /var/lib/registry/docker/registry/v2/repositories/busybox/_manifests/tags/
Since each registry runs as a container the container ID has an associated log file ID-json.log this log file contains the vars.name=[image] and vars.reference=[tag]. A script can be used to extrapolate and print these. This is perhaps one method to list images pushed to registry V2-2.0.1.
If your use-case is identifying only SIGNED and TRUSTED images for production, then this method is handy.
It parses a docker image repo for all SIGNED tags and strips away all the JSON formatting, puking-out only clean image tags. Which of course can be processed further according to your requirements.
Format of Command:
docker trust inspect imageName | grep "SignedTag" | awk -F'"' '{print $4}'
Examples using the nginx & Bitnami Docker repos:
docker trust inspect nginx | grep "SignedTag" | awk -F'"' '{print $4}'
docker trust inspect bitnami/java | grep "SignedTag" | awk -F'"' '{print $4}'
If there are no signed images then No signatures or cannot access imageName will be returned.
Example of a repo WITHOUT signed images (at the time of this writing) using the Wordpress Docker repo:
docker trust inspect wordpress | grep "SignedTag" | awk -F'"' '{print $4}'
If you want a nice web interface to your registry you can use this registry-browser docker image. This is useful if you just want to look around your registry, different repositories and tags.
If, the accepted answer here only returns a blank line, it is likely because of your ssl/tls cert on your registry server. Use the --insecure flag:
curl --insecure https://<registryHostnameOrIP>:5000/v2/_catalog