Docker - Getting started with swam

docker_swam_101

$ docker-machine create -d virtualbox node1

$ docker-machine create -d virtualbox node2

$ docker swarm init --advertise-addr 192.168.99.100
Swarm initialized: current node (3e9deoyqmm4q95xmxegtlusi0) is now a manager.

To add a worker to this swarm, run the following command:
    docker swarm join \
    --token SWMTKN-1-05ii9ckfw8evswg3spzgtef8pvy9l2e1izzp16k0gxtwchr96u-b7q7ksfqdum2jrybdsb9qobrx \
    192.168.99.100:2377

To add a manager to this swarm, run the following command:
    docker swarm join \
    --token SWMTKN-1-05ii9ckfw8evswg3spzgtef8pvy9l2e1izzp16k0gxtwchr96u-4wj3loqymvs5asglru8c72fuz \
    192.168.99.100:2377

$ docker node ls
ID                           HOSTNAME  STATUS  AVAILABILITY  MANAGER STATUS
2dsuoxyxv7ra425vi563yck50    node2     Ready   Active
3e9deoyqmm4q95xmxegtlusi0 *  node1     Ready   Active        Leader

$ docker network create -d overlay skynet
byts2wtg8y6twa1cv3o9ae5op

$ docker service create --name http --network skynet --replicas 2 -p 80:80 katacoda/docker-http-server
3m73t32l3yn4xg8bewokacrxp

$ docker service ls
ID            NAME  REPLICAS  IMAGE                        COMMAND
3m73t32l3yn4  http  0/2       katacoda/docker-http-server

$ docker service ls
ID            NAME  REPLICAS  IMAGE                        COMMAND
3m73t32l3yn4  http  2/2       katacoda/docker-http-server

$ docker ps
CONTAINER ID        IMAGE                                COMMAND             CREATED             STATUS              PORTS               NAMES
e85e1ff57b04        katacoda/docker-http-server:latest   "/app"              33 seconds ago      Up 32 seconds       80/tcp              http.1.82h7ksctorx498vztr8fh4896

$ curl 192.168.99.100
<h1>This request was processed by host: 708e6bc40c55</h1>

$ docker service ps http
ID                         NAME    IMAGE                        NODE   DESIRED STATE  CURRENT STATE          ERROR
82h7ksctorx498vztr8fh4896  http.1  katacoda/docker-http-server  node1  Running        Running 5 minutes ago
537hlv2qff8p7v9ovqvfgj3go  http.2  katacoda/docker-http-server  node2  Running        Running 5 minutes ago


$ docker node ps self
ID                         NAME    IMAGE                        NODE   DESIRED STATE  CURRENT STATE          ERROR
82h7ksctorx498vztr8fh4896  http.1  katacoda/docker-http-server  node1  Running        Running 6 minutes ago


$ docker node ps $(docker node ls -q | head -n1)
ID                         NAME    IMAGE                        NODE   DESIRED STATE  CURRENT STATE          ERROR
537hlv2qff8p7v9ovqvfgj3go  http.2  katacoda/docker-http-server  node2  Running        Running 7 minutes ago

$ docker node ls -q
2dsuoxyxv7ra425vi563yck50
3e9deoyqmm4q95xmxegtlusi0

$ docker service scale http=4
http scaled to 4

$ docker service ps http
ID                         NAME    IMAGE                        NODE   DESIRED STATE  CURRENT STATE           ERROR
82h7ksctorx498vztr8fh4896  http.1  katacoda/docker-http-server  node1  Running        Running 9 minutes ago
537hlv2qff8p7v9ovqvfgj3go  http.2  katacoda/docker-http-server  node2  Running        Running 9 minutes ago
dzxexyx8mv2aox2frg8y4jt45  http.3  katacoda/docker-http-server  node2  Running        Running 10 seconds ago
62dj0w5v0x02mpjvztdss7i4a  http.4  katacoda/docker-http-server  node1  Running        Running 10 seconds ago

$ curl 192.168.99.100
<h1>This request was processed by host: 4f8485aef449</h1>
$ curl 192.168.99.100
<h1>This request was processed by host: 15159e131712</h1>
$ curl 192.168.99.100
<h1>This request was processed by host: 708e6bc40c55</h1>
$ curl 192.168.99.100
<h1>This request was processed by host: e85e1ff57b04</h1>
$ curl 192.168.99.100
<h1>This request was processed by host: 4f8485aef449</h1>



#################################################################################################

NODE 2 

#################################################################################################

$ token=$(docker -H 192.168.99.100:2376 swarm join-token -q worker)

$ docker swarm join 192.168.99.100:2377 --token $token
This node joined a swarm as a worker.

$ docker ps
CONTAINER ID        IMAGE                                COMMAND             CREATED             STATUS              PORTS               NAMES
708e6bc40c55        katacoda/docker-http-server:latest   "/app"              50 seconds ago      Up 50 seconds       80/tcp              http.2.537hlv2qff8p7v9ovqvfgj3go

$ curl 192.168.99.100
<h1>This request was processed by host: e85e1ff57b04</h1>