Symptoms
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Numerous email notifications sent to Plesk administrator mailbox:
[email protected]> /usr/bin/dgri-report collect on_unchanged_config=nop with detail message – docker socket present but not accessible
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No Docker containers are running on the server
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Docker is not installed in Extensions, but its packages can be seen on the server:
For Red Hat/CentOS OS:
# yum list installed | grep -i docker
containerd.io.x86_64 1.2.6-3.3.el7 @plesk-ext-docker
docker-ce.x86_64 3:19.03.1-3.el7 @plesk-ext-docker
docker-ce-cli.x86_64 1:18.09.0-3.el7 @plesk-ext-dockerFor Debian/Ubuntu OS:
# dpkg -l | grep docker
ii docker-engine 17.05.0~ce-0~debian-jessie amd64 Docker: the open-source application container engine
Cause
Docker was not properly removed.
Resolution
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Connect to the server via SSH
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Stop Docker process:
# service docker stop
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Remove Docker package from the server:
For Red Hat/CentOS OS:
# rpm -e –nodeps docker-ce.x86_64
For Debian/Ubuntu OS:
# dpkg -P –force-all docker-engine