Prerequisites:
Docker Create virtual machines and Swarm
How to use Docker Create a node. js The development Environment
Body:?
How to use Docker to build a node. JS Development Environment The Nodehello image created in the article is published on the official website.
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Docker daemondocker client swarmthe handler function that initializes the response-related command is located at api/server/router/swarm/cluster.go :
Buildrouter is a router to talk with the build Controllertype swarmrouter struct {backend backend routes []rout Er. route}//Newrouter Initializes a new build Routerfunc Newrouter
Before we have deployed a Docker swarm cluster environment, we will briefly introduce the management of the swarm cluster.
Cluster scheduling strategy
Since it is a cluster, there is a scheduling policy, that is, the cluster contains so many sub-nodes, I exactly set a strategy to allocate it.
We look at the official Docker
Docker swarm mode and dockerswarm Mode
Docker 1.12 and later versions integrate swarmkit and other orchestration services. The current docker version is 1.12-rc2. This article will try to use this mode to create a native docker Cluster
This article includes the following poi
Try docker swarm mode and dockerswarmDocker 1.12 and later versions integrate swarmkit and other orchestration services. The current docker version is 1.12-rc2. This article will try to use this mode to create a native docker Cluster
This article includes the following points:
Initialize a
Docker + swarm cluster
Guide
Swarm is a new container management tool released by Docker in early December 2014. The Docker management tools released with Swarm are also machine and compose.
Docker Swarm principle large decryption
Docker Swarm is the Docker company's 2014 production of Docker based cluster Management scheduling tool, Official document address: https://docs.docker.com/
First, the Environment preparation1. Prepare 3 virtual machines with IP and hostname settings as follows192.168.71.137Manager1192.168.71.141Worker1192.168.71.140Worker22. System and Software versionsSystem version[Email protected] ~]# cat/etc/redhat-releaseCentOS Linux release 7.2.1511 (Core)Kernel version[Email protected] ~]# uname-r3.10.0-327.36.1.el7.x86_64Docker version[Email protected] ~]# docker-vDocker version 1.12.2, build bb806043. Firewall t
Swarm Introduction
Since its inception, the container features and mirroring features of Docker have brought a lot of convenience to devops enthusiasts. For a long time, however, Docker can only run on a single host, and its ability to deploy, run, and manage across hosts has been widely criticized. The weak cross-host capability leads directly to the tight coup
Docker is not easy to get, the operation is more complex, it is recommended to upgrade the Docker to the latest version (version 1.13). Here take 1.13.1 as an example to introduce how to use swarm to build Docker cluster.
The first step: first in the host terminal to execute the following command:
$ sudo
Build docker swarm clusters from scratchCheck node Docker configuration1. Open the Docker configuration file (example CentOS 7)Vim/etc/sysconfig/docker2. Add-H tcp://0.0.0.0:2375 to optionsoptions= '-g/cutome-path/docker-h tcp://0.0.0.0:2375 '3. CentOS6.6 need to add the-H u
Docker Swarm is a tool for creating server clusters. Tie a bunch of servers together and make them look like a server that runs applications on these servers through a unified interface.
Servers in a cluster know each other, and they know which servers are running what services, and if the access service does not exist on the server, it transfers access to the correct server in the cluster. A service can b
Getting started with Docker swarm
The worst way to install swarm is to use the image on the Docker website.
root@syx-vb:~# DAO Pull Swarm
use the following command to see if the Swarm is installed successfully:
root@syx-v
Docker service is a declarative, scalable, load-balanced application. Docker service is a user-oriented application, while Docker swarm is an IT-oriented node cluster.
Docker service is often run on the basis of Docker
ObjectiveIn Docker engine v1.12, using swarm can easily create a overlay mode network, but it can only be used by the service below Swarm, which is completely isolated relative to container. In v1.13, when running containers, you can join the overlay network that was previously customized in swarm mode!1. Create
Original address: https://docs.docker.com/swarm/discovery/
Docker Swarm node found in three ways: Distributed key value Storage, node list, Docker Hub.
Note: The following "host discovery" is equivalent to "node discovery". Storage host discovery using distributed key values
It is recommended that the LIBKV project be
Firewall add rule name= "SWM 4789udp" Dir=in action=allow protocol=udp localport=47893. Initializing cluster modeExecute on Masterc:\> Docker swarm init--advertise-addr=192.168.2.30--listen-addr 192.168.2.30:2377Pit: Perform Docker swarm init on Linux to initialize the cluster, but will not be stuck on windows, you ne
This is a creation in
Article, where the information may have evolved or changed.
main.goThe code is as follows:
package mainimport ( _ "github.com/docker/docker/pkg/discovery/file" _ "github.com/docker/docker/pkg/discovery/kv" _ "github.com/docker/
Tags: using the download LOB stderr results UAC easy-to-use DEP amp
The Docker swarm cluster has many monitoring options, and the Cadvisor+influxdb+grafana solution is powerful and flexible. The most important thing is that this program is open source, free, easy to use, is an inexpensive version of the monitoring program. Reference Document: https://botleg.com/stories/monitoring-
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