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What is the system kernel required by docker?

What is the system kernel required by docker?

Docker requires system kernel: 1. Docker runs on "CentOS 7", which requires the system to be 64-bit and the system kernel version is 3.10 or above; 2. Docker runs on "CentOS-6.5" or higher version of CentOS, which requires the system to be 64-bit, the system kernel version is "2.6.32-431" or higher.

Aug 15, 2022 pm 05:16 PM
Docker
Can es be deployed with docker?

Can es be deployed with docker?

es can be deployed using docker; deploying es clusters can be done directly using "docker-compose". "docker-compose" is a docker tool used to define and run complex applications. An application using docker containers usually consists of multiple containers. Compose, using "docker-compose" eliminates the need to use shell scripts to start containers.

Aug 15, 2022 pm 05:09 PM
Docker
What is the isolation of docker containers by?

What is the isolation of docker containers by?

Docker containers achieve isolation through the Linux kernel technology Namespace; the "Linux Namespaces" mechanism provides a resource isolation solution. The resources under each namespace are transparent and invisible to the resources under other namespaces, so at the operating system level There will be multiple processes with the same pid.

Aug 15, 2022 pm 04:42 PM
Docker
Does docker belong to paas or iaas?

Does docker belong to paas or iaas?

Docker belongs to the pass layer; docker is an open source application engine, paas is the abbreviation of "Platform as a Service", which refers to the software development platform as a service, and docker is an open source application based on dotCloub, the paas provider. LXC's advanced container engine.

Aug 15, 2022 pm 04:30 PM
Docker
What to do if the docker container cannot be stopped

What to do if the docker container cannot be stopped

Solution to the problem of unable to stop the docker container: 1. Use the "docker rm -f container id that cannot be stopped" command to forcefully delete the specified container; 2. Use the "docker network disconnect --force bridge container id" command to clean up the container The network is occupied.

Jul 29, 2022 pm 03:59 PM
Docker
Can docker be started without root permissions?

Can docker be started without root permissions?

Docker cannot be started without root permissions; using docker requires root permissions. Ordinary users without root permissions will not be able to operate docker. If ordinary users do not have root permissions, they can use sudo to obtain administrator permissions, run docker commands, or change the current user By joining the docker user group, the current user has permission to access the "Unix socket" and can execute docker related commands.

Jul 29, 2022 pm 03:53 PM
Docker
What docker images can do

What docker images can do

In docker, images can be used to package software operating environments and software developed based on the operating environment; images are the prerequisite for Docker to run containers, and warehouses are the place where images are stored and are the core of Docker. In addition to providing the programs required for container runtime , libraries, resources, configuration and other files, it also contains some configuration parameters prepared for runtime.

Jul 29, 2022 pm 03:46 PM
Docker
What is the use of docker image warehouse?

What is the use of docker image warehouse?

In docker, the main function of the mirror warehouse is to store and distribute docker images; mirror warehouses are several places where images are stored. Mirror warehouses can be divided into remote warehouses and local warehouses. Remote warehouses can be understood as cloud warehouses and public warehouses. It is a warehouse maintained by an organization or company. The local warehouse can be understood as a private warehouse and is not open to the public.

Jul 28, 2022 pm 04:14 PM
Docker
Why is docker lightweight?

Why is docker lightweight?

The reason why docker is a lightweight virtualization technology is that "the docker image is small in size"; docker virtualization is built on the operating system, and different versions of the Linux kernel are basically the same, so there is no need to install the operating system kernel, you only need to Just introduce the image of the corresponding operating system, and the image contains the corresponding file system, so the size of the docker image is very small.

Jul 28, 2022 pm 04:05 PM
Docker
Can docker be installed on aix?

Can docker be installed on aix?

Docker cannot be installed on aix; aix is ​​a UNIX-like operating system developed by IBM based on "AT&T Unix System V". Whether docker is the ce or ee version, it can only provide limited support for the Power platform in the form of PowerLinux. Currently, it does not Installation on aix is ​​not supported.

Jul 27, 2022 pm 05:12 PM
Docker
Does docker support centos6 installation?

Does docker support centos6 installation?

Docker supports centos6 installation; official documents require that "Linux kernel" must be at least 3.8 to install docker, and docker can only run in 64-bit systems. Since the kernel versions of "RHEL6" and "CentOS6" are 2.6, they must first Installation can only be done after upgrading the kernel of the "CentOS6" system.

Jul 27, 2022 pm 05:02 PM
Docker
Can docker replace vmware?

Can docker replace vmware?

docker cannot replace vmware; docker refers to the Docker container, which is an open source application container engine, and vmware virtual machine software is a virtual PC software. Although the container Docker technology has obvious advantages, the relationship between the two is not antagonistic, replacing or being replaced. , but it should be a complementary and cooperative relationship. Docker is more suitable for microservice architecture and is not suitable for relational database applications.

Jul 26, 2022 pm 04:18 PM
Docker
Does docker need to install jdk?

Does docker need to install jdk?

The docker service itself does not need to install jdk. If the java application container is used, jdk needs to be installed in the container; the docker container does not have jdk by default. If you need to run the java program, install jdk in the host machine and install jdk in the container. The full name of jdk is "Java" Development Kit" refers to the Java language software development toolkit, which is mainly used for the development of Java applications on mobile devices and embedded devices.

Jul 26, 2022 pm 04:05 PM
Docker
What is docker container escape

What is docker container escape

Docker container escape refers to the process and result that the attacker has obtained the command execution capability under certain permissions in the container by hijacking the containerized business logic or direct control; because docker uses isolation technology, the process in the container The outside process cannot be seen, but the outside process can see inside, so if a container can access outside resources or even obtain the permissions of the host host, this is called "Docker escape".

Jul 25, 2022 pm 05:13 PM
Docker

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