is used to create a container, the program specified by entrypoint is set as the default program. Entrypoint has two forms:
ENTRYPOINT ["executable", "param1", "param2"]ENTRYPOINT command param1 param2
Commands executed through docker run do not overwrite entrypoint, and any parameters specified in the docker run comm
operations in other Ubuntu versions.
Currently, only 64-bit Docker installation packages are available in Ubuntu. If you want to run 32-bit Docker, you need to use the source code to compile the 32-bit Docker tool.Install Docker
Installing Docker with apt-get is a piece of
When Docker creates a container, it uses the bridge network by default, assigning its own IP and not allowing itself to be specified.In the actual deployment, we need to specify the container IP, not allow its own IP, especially when building a cluster, fixed IP is required.We can create our own bridge network: MyNet,
This is a creation in
Article, where the information may have evolved or changed.
"Editor's word" is the collective idea of the operation of the company, but also a deep understanding of technology people, this article is the author in the practice of immutable infrastructure concept of the process of understanding the container, this is the first article, This paper focuses on the differences between traditional operational tools such as chef and
mirror
[root@201 ~]# docker images mysql_test
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
mysql_test latest ac45bc85be5e about a minute ago 374.3 MB
This will create a MySQL server installed on the CENTOS6 system, the image name is Mysql_test, and the CENTOS6 system will be downloaded locally. Okay, start down.
[root@201 ~]#
network stack with another container.user-defined NetworkIn this mode, users can use Docker network driver or external network driver plugin to create a custom network. Users can connect multiple containers to the same network. Once a container is connected to a user-defined network, the container can use another cont
see/proc/mounts to find the device file/home/jpetazzo for this directory.
$ while read DEV MOUNT JUNK
> does [$MOUNT = $FILESYS] break
> Done
Locate the mount condition through the device information.
$ while read A B C subroot MOUNT JUNK
> does [$MOUNT = $FILESYS] break
> doing
Well, we now know that we need to mount/dev/sda2 to this directory/jpetazzo, from this point to any directory we need.
Set Directory
$ subpath=$ (echo $REALPATH | sed s,^ $FILESYS,
Introduced inside Docker The image is running on the filesystem and the parameters are that it will never change. The container is an instance of the mirror runtime. when you're in Docker When you run a command on it, he runs the following actions:1. Check if the image exists2. if not, download3. Load the image run the action you wantView Local containers[[email
(function () {// The following code inserts a Tweet data DB: table ('Tweets ') -> insert (['content' => 'hi']);})-> everyMinute ();}...
In a few minutes, you can check whether the database has successfully inserted data ~References
Laravel task scheduling
How to use crontab for scheduled tasks under docker [python]
Laravel scheduled task
DaoCloud + Docker + Laravel + crontab
After the above attemp
First create a bash script that sends mail-send_mail.sh:#!/bin/Bashcurl-S--user'api:key-xxxxxxxxxxxxx'https://api.mailgun.net/v3/xxxxxxx/messages \-F from='Support ' -F to='xxx ' -F subject="$mail _subject" -F text="$mail _text"The email here is mailgun and can be replaced by a different email provider.Then create a script to check Docker status-check
?? Long T?inux, we generally use IP command to create network Namespace (Docker source code, it does not use IP command, but its own implementation of the IP commands within some of the functions-is used raw socket to send some "strange" data, hehe). Here, I still use IP command to explain.First of all, we look at a graph, the following diagram is basically Docker
1. After entering the inside of the container
Cat/etc/hosts
will display its own and (–link) soft connection to the container IP 2. Using Commands
Docker Inspect--format ' {{. Networksettings.ipaddress} ' OrDocker Inspect OrDocker inspect-f ' {range. networksettings.networks}}{{. Ipaddress}}{{end} ' container_name_or_id 3. You can consider writing a bash functi
, and you need to update them further to create your own version
The first two, to a certain extent, or you may be the control, the last situation will not be able to. This problem will ultimately affect the actual availability of Docker, and current solutions include:
when using Dockerfile , merge as many actions as possible: for example, use "" or ";" combine to run multiple shell commands
Reprint please indicate the source: http://blog.csdn.net/dongdong9223/article/details/71425077This article comes from "I'm a fish on the hook" blog.
I've explained how to get in and out of Docker's container. Today, in Docker, the host and container (container) Copy the method of transferring files to each other. 1 co
Restarting the Docker service at run time may cause container to fail to start, and the error message is similar to the containerError response from Daemon:cannot start container zookeeper:error getting container DDF1DD91BBF46DC648268327F8F7C6FFFAF 2F19CDA5CF1D97FDC701016D4332C from driver devicemapper:error mounting '
Alpine Linux's official website:http://www.alpinelinux.org/#官方Https://pkgs.alpinelinux.org/packages #官方提供的安装包查询When you use Docker to create a container, the underlying image typically chooses Ubuntu or CentOS, regardless of the size of the image above 100MB.Alpine Linux is a security-oriented, lightweight Linux distribution.Alpine Linux employs musl libc and bus
an existing application to migrate seamlessly, and on the other hand, IaaS is somewhat cumbersome in some way, and the advent of Docker, aptly filling the middle, is an encouraging technique for developers and IT managers alike.The evidence suggests that Docker's current frenzy of growth is an indisputable fact:More than 460 contributors have exceeded 8,700 submissions in the last 15 months, have been downloaded more than 27.5 million times, more tha
a single machine or moved anywhere. From a PAAs perspective, it may not be easy for an existing application to migrate seamlessly, and on the other hand, IaaS is somewhat cumbersome in some way, and the advent of Docker, aptly filling the middle, is an encouraging technique for developers and IT managers alike.The evidence suggests that Docker's current frenzy of growth is an indisputable fact:in the last 15 months More than 460 contributors have exc
1. Using Docker run to create a Docker container (Docker commands are all started with Docker) after the Docker is installed, most of the time this machine does not typically have a
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