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 docker run--RM swarm create
The generated token 6cce80f59f4292ba8f4e085950c6f480 must be saved an
#故障转移 Failover#当其中一个节点关闭宕机时, the service in its node is transferred to another node.The swarm detects that the node1 fails and marks the state of the fault node as down; Docker node LS to see the status of Node1 downAt the same time Swarm will dispatch the service on the Node1 to other resource nodes to run; Docker service PS Web_server to see its process and status#访问server#便于分析, redeploy aDocker Service C
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 swarm
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 be supported by multiple containers, which run
First, create a cluster1. Initialize the manager node (XXX is the manager's IP address)docker swarm init --advertise-addr xxx.xxx.xxx.xxxWill output the following, note Bold Italic command, join the cluster need to use
Swarm initialized:current Node (pk4p936t4e03cpse3izuws07s) is now a manager.To add a worker to this swarm, run the following command:Dock
In the global version of the standard particle swarm algorithm, the speed of each particle is updated according to two factors, the two factors are:1. Particle's own historical optimal value Pi . 2. Global optimal value of the particle population pg. If you change the particle speed update formula, let the speed of each particle update according to the following two factors,A. Particle's own historical optimal value Pi . B. optimal values of particl
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 unix:///var/run/docker.sock separatelyOptions= '-g/mnt/docker-h tcp://0.0.0.0:2375-h unix:///var/run/docker.sock 'Install swarm for A an
Python programming implementation particle swarm algorithm (PSO) details, pythonpso
1 Principle
The particle swarm algorithm is a kind of group intelligence, which is based on the research and simulation of the bird group's feeding behavior. Suppose there is food in only one place in the bird group for food, and all the birds cannot see the food (they do not know the specific location of the food ), however
The metaphor of one imageThe particle swarm algorithm can use random foraging of birds in a space, for example, all birds don't know where the food is, but they know how far it is, the simplest and most effective way is to search the surrounding area of the bird that is currently closest to the food.Therefore, the PSO algorithm is to see the birds as a particle, and they have the position and speed of the two properties, and then according to their ow
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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 (b backend) router. Router {r: = swarmrouter
1. Swarm is a scheduling framework developed by docker.
(Found on the Internet)
2.Server Load balancer: Docker is called ingress load balancing ). It works by listening to published service ports on all worker nodes. When the service is called by an external system, the node that receives the traffic will use the internal DNS service provided by docker to balance the traffic to different workers.
(Found on the Internet)
3.doc Ker cluster constructio
In recent years, the multi-objective optimization technique based on heuristic has been greatly developed, and the research shows that this technique is more practical and efficient than the classical method. The representative multi-objective optimization algorithms mainly include NSGA, Nsga-ii, SPEA, SPEA2, Paes and Pesa. Particle swarm optimization (PSO) algorithm is an evolutionary technology based on swarm
A. Create a background? Particle swarm optimization (Particleswarm OPTIMIZATION,PSO), proposed by Kennedy and Eberhart in 1995, modifies the model of the Hepper simulated bird population (fish) so that the particles can fly to the solution space and land at the best solution, The particle swarm optimization algorithm is obtained.? Similar to genetic algorithms , it is a group-based iteration, but there is n
*π/180, then the coordinate point at the latitude: =π/2-latitude *π/180; coordinates point in south Latitude:? =π/2+ latitude *π/180; coordinates point in the west longitude:? =π*2-latitude *π/180; After this conversion is complete, it can be done by giving (X1-X2) ^2+ (y1-y2) ^2+ (z1-z2) ^ 2 The formula calculates the straight distance between two points D, and then the cosine theorem to find the angle between two points, and finally calculate the spherical distance between two points, the cod
Last time, the implementation of the elementary particle swarm algorithm was discussed, and the C language code was given. This article mainly explains an important parameter affecting particle swarm optimization---w. We have already said that the core of the particle swarm algorithm is two formulas:Vid (k+1) =w*vid (k) +c1*r1* (Pid (k)-xid (k)) +c2*r2* (PGD (k)-
I. Creating a background
The ❃ particle swarm algorithm (Particleswarm OPTIMIZATION,PSO), proposed by Kennedy and Eberhart in 1995, modifies the model of Hepper's simulated bird population (shoal) so that particles can fly to the solution space, and landed at the best solution, the particle swarm optimization algorithm was obtained.
❃ is similar to genetic algorithm, is also based on group iteration, but d
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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/docker/pkg/discovery/nodes" _ "github.com/docker/swarm/discovery/token" "github.com/docker/swarm/cli")func main() { cli.Run()}
The following 4
if the container can get more running memory, such as Redis.
Machine failure can automatically deploy the container on the faulty machine to other nodes.
If the cluster adds a new machine, rebalance the container's allocation.
If the container fails, restart it.
...
Now that you understand why container orchestration is needed, let's take a look at the two most popular options and the contrast between them today.Docker SwarmSwarm is the development of native cluster managem
Introduction: Basic PSO algorithm implemented in C Language
C language implementation of the standard PSO algorithm 1. first look at the language description of the PSO to summarize the core idea of particle swarm optimization (PSO) in one sentence:
Cool people often appear in pairs.. Therefore, if you want to make yourself more bullish, You have to lean to the ox and hug your thigh. The initial idea of PSO is that birds and fish are waiting for food.
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