Introduction
This article is just a simple article for pointing out how to solve an error message. Basically, for more information, this article has the same situation with two of other previous articles. In summary, those two article is showing error message appears when pulling image using podman. The first article exist in this link. It is an article with the title of ‘How to Solve Error Message manifest unknown: manifest unknown when executing podman to pull image’. The second article with the title of ‘How to Solve Error Message name unknown: Repo not found when executing podman to pull image’ exist in this link. The error message is exist as in the following ‘podman’ command execution :
[root@10 ~]# [root@10 ~]# podman pull localhost
? Please select an image:
▸ registry.fedoraproject.org/localhost:latest
registry.access.redhat.com/localhost:latest
registry.centos.org/localhost:latest
docker.io/library/localhost:latest
Actually, the podman command execution is ‘podman pull localhost’. It is a command to order podman to pull an image with the name of ‘localhost’. Since the image repository does not exist as part of the image name, they command will trigger an output with the list of available image repository available. The list actually exist in the configuration. The following is the command execution :
[admin@10 ~]$ podman pull localhost ✔ docker.io/library/localhost:latest Trying to pull docker.io/library/localhost:latest... denied: requested access to the resource is denied Error: Error initializing source docker://localhost:latest: Error reading manifest latest in docker.io/library/localhost: errors: denied: requested access to the resource is denied unauthorized: authentication required [admin@10 ~]$
So, what is the actual different from the previous two articles ?. Two of the previous articles which in this link is showing the error message of ‘manifest unknown: manifest unknown’ and the other one in this link with the error message of ‘name unknown: Repo not found’ has their own differentiation. The one with the error message of ‘manifest unknown: manifest unknown’ is using v2 configuration syntax pattern in its container configuration file. The other one with the error message of ‘name unknown: Repo not found’ is using v1 configuration syntax pattern in its container configuration file.
What about this article ?. It is also doing the same thing. Pulling an image from a server repository using podman. Well, actually there is more than that. Before pulling the image from a server reposity using podman, there is a login process previously. The following is the login process :
[admin@10 ~]$ podman login Username: anonymous Password: Login Succeeded! [admin@10 ~]$ podman pull localhost ✔ docker.io/library/localhost:latest Trying to pull docker.io/library/localhost:latest... denied: requested access to the resource is denied Error: Error initializing source docker://localhost:latest: Error reading manifest latest in docker.io/library/localhost: errors: denied: requested access to the resource is denied unauthorized: authentication required [admin@10 ~]$
Solution
The solution for solving the above is actually the same with the one available in those two previous articles. One of the reason is not because of the access for pulling the resource which is the image is denied. One of the other reason is because of it does not exist. So, before pulling the image, search it first. The following is the command for searching the image using podman :
[admin@10 ~]$ podman search localhost INDEX NAME DESCRIPTION STARS OFFICIAL AUTOMATED docker.io docker.io/localhost1/flask 0 docker.io docker.io/alo42/localhost-api 0 docker.io docker.io/alo42/localhost-nginx 0 docker.io docker.io/ishikawayasunori/localhost-registry 0 docker.io docker.io/ishikawayasunori/localhost-nginx 0 docker.io docker.io/ishikawayasunori/localhost-mysql 0 docker.io docker.io/laoliu/localhost 0 docker.io docker.io/localhost1/filebeat 0 docker.io docker.io/localhost8080/nginx 1 docker.io docker.io/aakashiiitm/localhost 0 docker.io docker.io/avinson/localhost-dot-run Simple image for receiving webhooks within d... 0 docker.io docker.io/bpholt/localhost-apache Host content on localhost with a self-signed... 0 docker.io docker.io/localhostdev/rpi-samba Dockerized Samba service for Raspberry Pi 4 0 docker.io docker.io/crazybber/localhost-registry 0 docker.io docker.io/jaskiteam/localhost 0 docker.io docker.io/scottm/localhost-notebook 0 docker.io docker.io/localhostss/auth-server 0 docker.io docker.io/pkajal/localhostimage 0 docker.io docker.io/localhostss/back-center 0 docker.io docker.io/localhostss/eureka-server 0 docker.io docker.io/ruebrettadcock/localhostlearning_gocode 0 docker.io docker.io/heycqing/localhost_node 简单的node微型服务器 0 docker.io docker.io/localhostss/user-center-mysql 0 docker.io docker.io/darkson/localhost 0 docker.io docker.io/ajreams1/localhost 0 [admin@10 ~]$
Without having to specify the address of the image repository server, the output of the command execution for searching the image is so many. There are more results compared by having to specify the image server using the address of the image repository server as follows :
[admin@10 ~]$ podman search registry.access.redhat.com/localhost [admin@10 ~]$
The following is a different case of image searching without having to specify the address of the image repository server :
[admin@10 ~]$ podman search hello-world INDEX NAME DESCRIPTION STARS OFFICIAL AUTOMATED docker.io docker.io/library/hello-world Hello World! (an example of minimal Dockeriz... 1443 [OK] docker.io docker.io/tutum/hello-world Image to test docker deployments. Has Apache... 81 [OK] docker.io docker.io/ansibleplaybookbundle/hello-world-apb An APB which deploys a sample Hello World! a... 1 [OK] docker.io docker.io/ansibleplaybookbundle/hello-world-db-apb An APB which deploys a sample Hello World! a... 1 [OK] docker.io docker.io/dockercloud/hello-world Hello World! 19 [OK] docker.io docker.io/kitematic/hello-world-nginx A light-weight nginx container that demonstr... 149 docker.io docker.io/crccheck/hello-world Hello World web server in under 2.5 MB 15 [OK] docker.io docker.io/thomaspoignant/hello-world-rest-json This project is a REST hello-world API to bu... 1 docker.io docker.io/infrastructureascode/hello-world A tiny "Hello World" web server with a healt... 0 [OK] docker.io docker.io/vad1mo/hello-world-rest A simple REST Service that echoes back all t... 5 [OK] docker.io docker.io/ppc64le/hello-world Hello World! (an example of minimal Dockeriz... 2 docker.io docker.io/garystafford/hello-world Simple hello-world Spring Boot service for t... 0 [OK] docker.io docker.io/strimzi/hello-world-consumer 0 docker.io docker.io/freddiedevops/hello-world-spring-boot 0 docker.io docker.io/datawire/hello-world Hello World! Simple Hello World implementati... 1 [OK] docker.io docker.io/strimzi/hello-world-producer 0 docker.io docker.io/strimzi/hello-world-streams 0 docker.io docker.io/burdz/hello-world-k8s To provide a simple webserver that can have ... 0 [OK] docker.io docker.io/koudaiii/hello-world 0 docker.io docker.io/rancher/hello-world 1 docker.io docker.io/souravpatnaik/hello-world-go hello-world in Golang 1 docker.io docker.io/businessgeeks00/hello-world-nodejs 0 docker.io docker.io/markmnei/hello-world-java-docker Hello-World-Java-docker 1 [OK] docker.io docker.io/nirmata/hello-world 0 [OK] docker.io docker.io/airwavetechio/hello-world 0 [admin@10 ~]$
Since there is an image with the name of ‘hello-world’, just pull it with podman as follows :
[admin@10 ~]$ podman pull hello-world Resolved "hello-world" as an alias (/etc/containers/registries.conf.d/000-shortnames.conf) Trying to pull docker.io/library/hello-world:latest... Getting image source signatures Copying blob b8dfde127a29 [--------------------------------------] 0.0b / 0.0b Copying config d1165f2212 done Writing manifest to image destination Storing signatures d1165f2212346b2bab48cb01c1e39ee8ad1be46b87873d9ca7a4e434980a7726 [admin@10 ~]$
The pulling process of the image with the name of ‘hello-world’ is a success. Since it is exist without having to be stumbled upon the error message of ‘denied: requested access to the resource is denied’.