docker swarm

[root@localhost ~]# docker swarm init --advertise-addr 192.168.0.107
Swarm initialized: current node (hfpe6zgjrjb5afzabannec3ko) is now a manager.

To add a worker to this swarm, run the following command:

    docker swarm join --token SWMTKN-1-4sj07p6oikjom64rkcu3expmaelzsyfyjninbrc53wqo6cnrxy-as7q387yy4akr1j6xwuw5mt98 192.168.0.107:2377

To add a manager to this swarm, run 'docker swarm join-token manager' and follow the instructions.

[root@localhost ~]#

[root@localhost ~]# firewall-cmd --permanent --add-port={2376,2377,7946}/tcp
success
[root@localhost ~]# firewall-cmd --permanent --add-port={7946,4789}/udp
success
[root@localhost ~]# firewall-cmd --reload
success

[root@localhost ~]# docker node ls

ID                            HOSTNAME                STATUS              AVAILABILITY        MANAGER STATUS      ENGINE VERSION

hfpe6zgjrjb5afzabannec3ko *   localhost.localdomain   Ready               Active              Leader              19.03.4

u3mfvjrjbohs8rxjw7vwjt5x4     localhost.localdomain   Ready               Active              Reachable           19.03.4

[root@localhost ~]# 

root@localhost ~]# docker info

Client:

 Debug Mode: false

Server:

 Containers: 1

  Running: 0

  Paused: 0

  Stopped: 1

 Images: 1

 Server Version: 19.03.4

 Storage Driver: overlay2

  Backing Filesystem: xfs

  Supports d_type: true

  Native Overlay Diff: true

 Logging Driver: json-file

 Cgroup Driver: cgroupfs

 Plugins:

  Volume: local

  Network: bridge host ipvlan macvlan null overlay

  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog

 Swarm: active

  NodeID: hfpe6zgjrjb5afzabannec3ko

  Is Manager: true

  ClusterID: v9ffk5xnxrbm2ivexs1fgs6ag

  Managers: 2

  Nodes: 2

  Default Address Pool: 10.0.0.0/8  

  SubnetSize: 24

  Data Path Port: 4789

  Orchestration:

   Task History Retention Limit: 5

  Raft:

   Snapshot Interval: 10000

   Number of Old Snapshots to Retain: 0

   Heartbeat Tick: 1

   Election Tick: 10

  Dispatcher:

   Heartbeat Period: 5 seconds

  CA Configuration:

   Expiry Duration: 3 months

   Force Rotate: 0

  Autolock Managers: false

  Root Rotation In Progress: false

  Node Address: 192.168.0.107

  Manager Addresses:

   192.168.0.107:2377

   192.168.0.109:2377

 Runtimes: runc

 Default Runtime: runc

 Init Binary: docker-init

 containerd version: b34a5c8af56e510852c35414db4c1f4fa6172339

 runc version: 3e425f80a8c931f88e6d94a8c831b9d5aa481657

 init version: fec3683

 Security Options:

  seccomp

   Profile: default

 Kernel Version: 3.10.0-862.el7.x86_64

 Operating System: CentOS Linux 7 (Core)

 OSType: linux

 Architecture: x86_64

 CPUs: 1

 Total Memory: 1.779GiB

 Name: localhost.localdomain

 ID: BCJU:QRFU:FUUO:63F3:6UEZ:RZFA:QPFZ:2K6Y:GMZF:WICS:AP2E:6VKN

 Docker Root Dir: /var/lib/docker

 Debug Mode: false

 Registry: https://index.docker.io/v1/

 Labels:

 Experimental: false

 Insecure Registries:

  127.0.0.0/8

 Live Restore Enabled: false

WARNING: bridge-nf-call-ip6tables is disabled

WARNING: Running Swarm in a two-manager configuration. This configuration provides

         no fault tolerance, and poses a high risk to lose control over the cluster.

         Refer to https://docs.docker.com/engine/swarm/admin_guide/ to configure the

         Swarm for fault-tolerance.

[root@localhost ~]# 

node 1 

[root@localhost ~]# docker swarm join --token SWMTKN-1-4sj07p6oikjom64rkcu3expmaelzsyfyjninbrc53wqo6cnrxy-cbraqf14rlfoe9q7bniswv3mx 192.168.0.107:2377

This node joined a swarm as a manager.

[root@localhost ~]# docker node ls

ID                            HOSTNAME                STATUS              AVAILABILITY        MANAGER STATUS      ENGINE VERSION

hfpe6zgjrjb5afzabannec3ko     localhost.localdomain   Ready               Active              Leader              19.03.4

u3mfvjrjbohs8rxjw7vwjt5x4 *   localhost.localdomain   Ready               Active              Reachable           19.03.4

[root@localhost ~]# 

[root@localhost ~]# docker info
Client:
 Debug Mode: false

Server:
 Containers: 48
  Running: 14
  Paused: 0
  Stopped: 34
 Images: 10
 Server Version: 19.03.4
 Storage Driver: overlay2
  Backing Filesystem: xfs
  Supports d_type: true
  Native Overlay Diff: true
 Logging Driver: json-file
 Cgroup Driver: cgroupfs
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
 Swarm: active
  NodeID: u3mfvjrjbohs8rxjw7vwjt5x4
  Is Manager: true
  ClusterID: v9ffk5xnxrbm2ivexs1fgs6ag
  Managers: 2
  Nodes: 2
  Default Address Pool: 10.0.0.0/8
  SubnetSize: 24
  Data Path Port: 4789
  Orchestration:
   Task History Retention Limit: 5
  Raft:
   Snapshot Interval: 10000
   Number of Old Snapshots to Retain: 0
   Heartbeat Tick: 1
   Election Tick: 10
  Dispatcher:
   Heartbeat Period: 5 seconds
  CA Configuration:
   Expiry Duration: 3 months
   Force Rotate: 0
  Autolock Managers: false
  Root Rotation In Progress: false
  Node Address: 192.168.0.109
  Manager Addresses:
   192.168.0.107:2377
   192.168.0.109:2377
 Runtimes: runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: b34a5c8af56e510852c35414db4c1f4fa6172339
 runc version: 3e425f80a8c931f88e6d94a8c831b9d5aa481657
 init version: fec3683
 Security Options:
  seccomp
   Profile: default
 Kernel Version: 3.10.0-862.el7.x86_64
 Operating System: CentOS Linux 7 (Core)
 OSType: linux
 Architecture: x86_64
 CPUs: 1
 Total Memory: 1.779GiB
 Name: localhost.localdomain
 ID: RTYH:Y3O4:JL3E:SRDS:B2SW:PT2H:QNUP:DQ7X:K3YI:3DGC:QKAX:JQQX
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 Registry: https://index.docker.io/v1/
 Labels:
 Experimental: false
 Insecure Registries:
  127.0.0.0/8
 Live Restore Enabled: false

WARNING: Running Swarm in a two-manager configuration. This configuration provides
         no fault tolerance, and poses a high risk to lose control over the cluster.
         Refer to https://docs.docker.com/engine/swarm/admin_guide/ to configure the
         Swarm for fault-tolerance.
[root@localhost ~]# 

node 

[root@localhost ~]# docker swarm leave --force

Node left the swarm.

[root@localhost ~]# docker swarm init

Swarm initialized: current node (wh6kz1ydst4szfo836d7ov9ey) is now a manager.

To add a worker to this swarm, run the following command:

    docker swarm join --token SWMTKN-1-0vbqjd87gsmax3sroitj6dbll4phmephzdoxo4o7sxikhfoe1r-59nt9xftv5chyhyz9728grzt9 192.168.0.107:2377

[root@localhost ~]# docker node ls

ID                            HOSTNAME                STATUS              AVAILABILITY        MANAGER STATUS      ENGINE VERSION

wh6kz1ydst4szfo836d7ov9ey *   localhost.localdomain   Ready               Active              Leader              19.03.4

[root@localhost ~]# docker node ls

ID                            HOSTNAME                STATUS              AVAILABILITY        MANAGER STATUS      ENGINE VERSION

u0gze6eklats9p49gv2pbb9xq     localhost.localdomain   Ready               Active                                  19.03.4

wh6kz1ydst4szfo836d7ov9ey *   localhost.localdomain   Ready               Active              Leader              19.03.4

root@localhost ~]# docker info

Client:

 Debug Mode: false

Server:

 Containers: 1

  Running: 0

  Paused: 0

  Stopped: 1

 Images: 1

 Server Version: 19.03.4

 Storage Driver: overlay2

  Backing Filesystem: xfs

  Supports d_type: true

  Native Overlay Diff: true

 Logging Driver: json-file

 Cgroup Driver: cgroupfs

 Plugins:

  Volume: local

  Network: bridge host ipvlan macvlan null overlay

  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog

 Swarm: active

  NodeID: wh6kz1ydst4szfo836d7ov9ey

  Is Manager: true

  ClusterID: dj9bcmp0f1khxbsedfrrv0i02

  Managers: 1

  Nodes: 2

  Default Address Pool: 10.0.0.0/8  

  SubnetSize: 24

  Data Path Port: 4789

  Orchestration:

   Task History Retention Limit: 5

  Raft:

   Snapshot Interval: 10000

   Number of Old Snapshots to Retain: 0

   Heartbeat Tick: 1

   Election Tick: 10

  Dispatcher:

   Heartbeat Period: 5 seconds

  CA Configuration:

   Expiry Duration: 3 months

   Force Rotate: 0

  Autolock Managers: false

  Root Rotation In Progress: false

  Node Address: 192.168.0.107

  Manager Addresses:

   192.168.0.107:2377

 Runtimes: runc

 Default Runtime: runc

 Init Binary: docker-init

 containerd version: b34a5c8af56e510852c35414db4c1f4fa6172339

 runc version: 3e425f80a8c931f88e6d94a8c831b9d5aa481657

 init version: fec3683

 Security Options:

  seccomp

   Profile: default

 Kernel Version: 3.10.0-862.el7.x86_64

 Operating System: CentOS Linux 7 (Core)

 OSType: linux

 Architecture: x86_64

 CPUs: 1

 Total Memory: 1.779GiB

 Name: localhost.localdomain

 ID: BCJU:QRFU:FUUO:63F3:6UEZ:RZFA:QPFZ:2K6Y:GMZF:WICS:AP2E:6VKN

 Docker Root Dir: /var/lib/docker

 Debug Mode: false

 Registry: https://index.docker.io/v1/

 Labels:

 Experimental: false

 Insecure Registries:

  127.0.0.0/8

 Live Restore Enabled: false

WARNING: bridge-nf-call-ip6tables is disabled

[root@localhost ~]# 

node 1 

[root@localhost ~]# docker swarm join --token SWMTKN-1-0vbqjd87gsmax3sroitj6dbll4phmephzdoxo4o7sxikhfoe1r-59nt9xftv5chyhyz9728grzt9 192.168.0.107:2377

This node joined a swarm as a worker.

[root@localhost ~]# docker info

Client:

 Debug Mode: false

Server:

 Containers: 48

  Running: 14

  Paused: 0

  Stopped: 34

 Images: 10

 Server Version: 19.03.4

 Storage Driver: overlay2

  Backing Filesystem: xfs

  Supports d_type: true

  Native Overlay Diff: true

 Logging Driver: json-file

 Cgroup Driver: cgroupfs

 Plugins:

  Volume: local

  Network: bridge host ipvlan macvlan null overlay

  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog

 Swarm: active

  NodeID: u0gze6eklats9p49gv2pbb9xq

  Is Manager: false

  Node Address: 192.168.0.109

  Manager Addresses:

   192.168.0.107:2377

 Runtimes: runc

 Default Runtime: runc

 Init Binary: docker-init

 containerd version: b34a5c8af56e510852c35414db4c1f4fa6172339

 runc version: 3e425f80a8c931f88e6d94a8c831b9d5aa481657

 init version: fec3683

 Security Options:

  seccomp

   Profile: default

 Kernel Version: 3.10.0-862.el7.x86_64

 Operating System: CentOS Linux 7 (Core)

 OSType: linux

 Architecture: x86_64

 CPUs: 1

 Total Memory: 1.779GiB

 Name: localhost.localdomain

 ID: RTYH:Y3O4:JL3E:SRDS:B2SW:PT2H:QNUP:DQ7X:K3YI:3DGC:QKAX:JQQX

 Docker Root Dir: /var/lib/docker

 Debug Mode: false

 Registry: https://index.docker.io/v1/

 Labels:

 Experimental: false

 Insecure Registries:

  127.0.0.0/8

 Live Restore Enabled: false

 docker service create --name web1 -p 80:80 --replicas 5 nginx
vus0grc7koogpwipbmzga94k6
overall progress: 5 out of 5 tasks
1/5: running
2/5: running
3/5: running
4/5: running
5/5: running
verify: Service converged
[root@localhost ~]# 

root@localhost ~]# docker service ps web1
ID                  NAME                IMAGE               NODE                    DESIRED STATE       CURRENT STATE             ERROR                              PORTS
u06x4zty0764        web1.1              nginx:latest        localhost.localdomain   Running             Running 12 minutes ago                                     

ucnhsmezofcn        web1.2              nginx:latest        localhost.localdomain   Running             Running 12 minutes ago                                     

qnovepvdliob        web1.3              nginx:latest        localhost.localdomain   Running             Running 12 minutes ago                                     

euicwuveru07        web1.4              nginx:latest        localhost.localdomain   Running             Running 12 minutes ago                                     

dx18pw6p39j2        web1.5              nginx:latest        localhost.localdomain   Running             Running 12 minutes ago                                     
             
[root@localhost ~]#