Curl Error (35) Ssl Connect Error For Https !!EXCLUSIVE!! Download.docker.com

curl failed to verify the legitimacy of the server and therefore could not

establish a secure connection to it. To learn more about this situation and

how to fix it, please visit the web page mentioned above.

gpg: no valid OpenPGP data found.

This error occurred when system is not able to connect to internet properly. If you are doing it in virtual machine then change the network type from NAT to bridged.After changing it check internet connection is working properly you can check docker download page.Hope it helps.

Curl Error (35) Ssl Connect Error For Https Download.docker.com

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If this command returns a value, the Docker client is set to connect to a Dockerdaemon running on that host. If it's unset, the Docker client is set to connectto the Docker daemon running on the local host. If it's set in error, use thefollowing command to unset it:

Then I spun up the containers I wanted to run again, and I had the idea to see if nextcloud would be working again, but no. This time it was a different error message though, namely a database authentication error.

I ran into problems with Lab 3.1 following the instructions to add the "download.docker.com" repository and installing containerd. I am using the posted lab instructions using Ubuntu 20.04 nodes hosted on AWS (I first tried 22.04, but encountered the cgroup error reported in "Still unable to join worker node to master node, please help").

I also tried setting APP_BASE_URL=192.168.0.x/joplin

When I visited the above link on another machine, I got an error "invalid login path" and I was given a link to go to the login page. On clicking on that, the url in the address bar changes to:

192.168.0.x/192.168.0.x/joplin {Ip address appears 2 times}

hi I am new to ros and trying to follow a ros2 installation tutorial form this YouTube video ( =-AouI...) but i keep getting the same error constantly I have tried the solutions provided above but did not improve anything I am using ubuntu in a virtual machine on Mac.

parallels@ubuntu-linux-20-04-desktop:~$ sudo apt-key del 421C365BD9FF1F717815A3895523BAEEB01FA116OKparallels@ubuntu-linux-20-04-desktop:~$ sudo -E apt-key adv --keyserver 'hkp://keyserver.ubuntu.com:80' --recv-key C1CF6E31E6BADE8868B172B4F42ED6FBAB17C654Executing: /tmp/apt-key-gpghome.6cydgLlBka/gpg.1.sh --keyserver hkp://keyserver.ubuntu.com:80 --recv-key C1CF6E31E6BADE8868B172B4F42ED6FBAB17C654gpg: keyserver receive failed: No nameparallels@ubuntu-linux-20-04-desktop:~$ sudo ntpdate time.windows.comsudo: ntpdate: command not foundparallels@ubuntu-linux-20-04-desktop:~$ sudo -E apt-key adv --keyserver 'hkp://keyserver.ubuntu.com:80' --recv-key C1CF6E31E6BADE8868B172B4F42ED6FBAB17C654Executing: /tmp/apt-key-gpghome.Ug3PX2PVGh/gpg.1.sh --keyserver hkp://keyserver.ubuntu.com:80 --recv-key C1CF6E31E6BADE8868B172B4F42ED6FBAB17C654gpg: keyserver receive failed: No nameparallels@ubuntu-linux-20-04-desktop:~$ sudo apt clean && sudo apt updateGet:1 focal InRelease [4,676 B]

Err:1 focal InRelease

The following signatures couldn't be verified because the public key is not available: NO_PUBKEY F42ED6FBAB17C654Hit:2 -ports focal InReleaseHit:3 -ports focal-updates InReleaseHit:4 -ports focal-backports InReleaseHit:5 -ports focal-security InReleaseReading package lists... DoneW: GPG error: focal InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY F42ED6FBAB17C654E: The repository ' focal InRelease' is not signed.N: Updating from such a repository can't be done securely, and is therefore disabled by default.N: See apt-secure(8) manpage for repository creation and user configuration details.parallels@ubuntu-linux-20-04-desktop:~$

gvdhoorn has a fantastic answer. I'd just like to point to solution to a problem which can be caused on remote machines like a Raspberry Pi. I had renewed the keys and was surprised as I still received the error.

W: GPG error: xenial InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY F42ED6FBAB17C654W: The repository ' xenial InRelease' is not signed.N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.N: See apt-secure(8) manpage for repository creation and user configuration details.

If you don't have dockerd running, you will get the following error for most docker commands:installing-and-using-mariadb-via-dockerCannot connect to the Docker daemon at unix:/var/run/docker.sock. Is the docker daemon running?

On some systems, commands such as docker stop mariadbtest and docker restart mariadbtest may fail with a permissions error. This can be caused by AppArmor, and even sudo won't allow you to execute the command. In this case, you will need to find out which profile is causing the problem and correct it, or disable it. Disabling AppArmor altogether is not recommended, especially in production.

If you are prompted for the password, then all is well. If you instead received an error containing something like "Sorry, user myusername may not run sudo" then you may need to follow the steps again, from the beginning.

I got this so I just added "iptables": false to my daemon.json and this error was averted. In the original post it says you only need to do this for Debian but not Ubuntu, and I'm using Ubuntu so I skipped that step originally. But in the end, turned out it was required.

Lastly, if you are working behind a proxy and need access to a private container registry, and get an x.509 certificate error with docker login, grab the root certificate of the proxy from your browser (export as base-64) and drop it into the docker certs directory related to your private registry/etc/docker/certs.d/{private_reg_name}:{private_reg_port}/ca.crt (private_reg_port is optional if you're using a standard port). The next time you do docker login, the auth section of ~/.docker/config.json will be updated.

When you deploy a new VMware Integrated OpenStack instance with an IP address that was used by another instance that has been connected to vRealize Automation, you might get certificate errors:

Cannot execute the request: ; java.security.cert.CertificateException: Certificate is not in CA store.Certificate is not in CA store. (Workflow:Invoke a REST operation / REST call (item0)#35)

Workaround: Use the viocli services stop command to stop all OpenStack services. Use the viocli services start command to restart all OpenStack services. After restarting, run the viocli deployment status -v command again. There should be no errors.

If you can't access RESTBase port (e.g. :7231), you can work around the problem using an httpd proxy; refer to "if RESTBase port is blocked".If your wiki is served through HTTPS, RESTBase must also be served through HTTPS; else users could experience "mixed-content" errors and the switch from wikitext to VisualEditor would not work.

If you get an error about importing matplotlib (specifically somethingabout the macosx backend) you might change your default backend to getit working. The customizing matplotlib page details theinstructions to modify your default matplotlibrc file (you can pickGTK or WX as an alternative). Specifically the TkAgg andmacosx backends currently do not work on OSX if you upgradematplotlib to the version required by fermipy. To get around thisissue you can switch to the Agg backend at runtime beforeimporting fermipy: e24fc04721