Differences

This shows you the differences between two versions of the page.

--- informatica:linux:docker:red [2017/02/13 18:30] – jose
+++ informatica:linux:docker:red [2017/02/13 20:18] (current) – jose
@@ Line 43: / Line 43: @@
 Ahora ejecutamos cada máquina con una ip:
-  docker run --name swarm_nodo1 --net swarm --ip 172.19.0.101 --hostname swarm1 --add-host=swarm1:172.19.0.101 --add-host=swarm2:172.18.0.102 --add-host=swarm3:172.19.0.103 -ti swarm
+  # docker run --name swarm-nodo1 --privileged --net swarm --ip 172.19.0.101 --hostname swarm1 --add-host=swarm1:172.19.0.101 --add-host=swarm2:172.19.0.102 --add-host=swarm3:172.19.0.103 -ti swarm
-  docker run --name swarm_nodo2 --net swarm --ip 172.19.0.102 --hostname swarm2 --add-host=swarm1:172.19.0.101 --add-host=swarm2:172.18.0.102 --add-host=swarm3:172.19.0.103 -ti swarm
+  # docker run --name swarm-nodo2 --privileged --net swarm --ip 172.19.0.102 --hostname swarm2 --add-host=swarm1:172.19.0.101 --add-host=swarm2:172.19.0.102 --add-host=swarm3:172.19.0.103 -ti swarm
+  # docker run --name swarm-nodo3 --privileged --net swarm --ip 172.19.0.103 --hostname swarm3 --add-host=swarm1:172.19.0.101 --add-host=swarm2:172.19.0.102 --add-host=swarm3:172.19.0.103 -ti swarm
+Creamos swarm en el primer nodo
+  # docker swarm init --advertise-addr 172.19.0.101
+<code>
+Swarm initialized: current node (obtavwk9ypnpq20ubd54gt7me) is now a manager.
+To add a worker to this swarm, run the following command:
+    docker swarm join \
+    --token SWMTKN-1-5wvvfc5qpmk4avbqzv0iw1st0qxtwb15ut0phwyjgmv2iw65t7-akxww3rmtsimaihqokcgmwu7a \
+.19.0.101:2377
+To add a manager to this swarm, run 'docker swarm join-token manager' and follow the instructions.
+</code>
+Si hacemos docker info, vemos swarm:
+  # docker info
+<code>
+.........
+Swarm: active
+ NodeID: obtavwk9ypnpq20ubd54gt7me
+ Is Manager: true
+ ClusterID: tbzs05pa17b5vkseyzzmc2sew
+ Managers: 1
+ Nodes: 1
+.........
+</code>
+Podemos ver los nodos activos:
+  # docker node ls
+  ID                           HOSTNAME  STATUS  AVAILABILITY  MANAGER STATUS
+  obtavwk9ypnpq20ubd54gt7me *  swarm1    Ready   Active        Leader
+El * indica que actualmente estamos conectados a ese nodo
+Desde el manager, sacamos el token para unir a los otros:
+  # docker swarm join-token worker
+  To add a worker to this swarm, run the following command:
-  docker run --name swarm_nodo3 --net swarm --ip 172.19.0.103 --hostname swarm3 --add-host=swarm1:172.19.0.101 --add-host=swarm2:172.18.0.102 --add-host=swarm3:172.19.0.103 -ti swarm
+    docker swarm join \
+    --token SWMTKN-1-5wvvfc5qpmk4avbqzv0iw1st0qxtwb15ut0phwyjgmv2iw65t7-akxww3rmtsimaihqokcgmwu7a \
+.19.0.101:2377
+Lanzamos ese comando en los otros dos nodos y vemos que se han unido:
+<code>
+# docker node ls
+ID                           HOSTNAME  STATUS  AVAILABILITY  MANAGER STATUS
+bz11p92f0ietyc2rvv8zs63dt    swarm3    Ready   Active
+mzjrvtr4519idowp10y1lowfy    swarm2    Ready   Active
+obtavwk9ypnpq20ubd54gt7me *  swarm1    Ready   Active        Leader
+</code>
+====== Crear un servicio ======
+https://docs.docker.com/engine/swarm/swarm-tutorial/deploy-service/
+  # docker service create --replicas 1 --name helloworld alpine ping docker.com
+  ny109vvho4z1f63lo9f2bbsb4
+  # docker service ls
+  ID            NAME        MODE        REPLICAS  IMAGE
+  ny109vvho4z1  helloworld  replicated  1/1       alpine:latest
+Ahora miramos el servicio
+https://docs.docker.com/engine/swarm/swarm-tutorial/inspect-service/
+  docker service inspect --pretty helloworld
+<code>
+ID:		ny109vvho4z1f63lo9f2bbsb4
+Name:		helloworld
+Service Mode:	Replicated
+ Replicas:	1
+Placement:
+UpdateConfig:
+ Parallelism:	1
+ On failure:	pause
+ Max failure ratio: 0
+ContainerSpec:
+ Image:		alpine:latest@sha256:dfbd4a3a8ebca874ebd2474f044a0b33600d4523d03b0df76e5c5986cb02d7e8
+ Args:		ping docker.com
+Resources:
+Endpoint Mode:	vip
+</code>
+Vemos donde corre:
+  # docker service ps helloworld
+  ID            NAME          IMAGE          NODE    DESIRED STATE  CURRENT STATE          ERROR  PORTS
+  l4edt3bnis27  helloworld.1  alpine:latest  swarm3  Running        Running 3 minutes ago