docker swarm nginx scale / replica

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

[root@worker ~]# ifconfig


ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.0.105  netmask 255.255.255.0  broadcast 192.168.0.255
        inet6 fe80::8961:8cea:862:8e15  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:ae:88:4d  txqueuelen 1000  (Ethernet)
        RX packets 1913  bytes 282316 (275.6 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 611  bytes 50115 (48.9 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

[root@worker ~]# docker swarm init --advertise-addr 192.168.0.105
Swarm initialized: current node (7mlylkldtaqev2nbiq9meflv4) is now a manager.

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

    docker swarm join \
    --token SWMTKN-1-5b7tj696sba0gpvhuho6yau5dtl8ns1rd5l3juo7je4vemwny5-7z040pbkdhurt3n3736fdqpfa \
    192.168.0.105:2377

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

[root@worker ~]# ifconfig
docker0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 172.17.0.1  netmask 255.255.0.0  broadcast 0.0.0.0
        ether 02:42:f5:72:58:b5  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

docker_gwbridge: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 172.18.0.1  netmask 255.255.0.0  broadcast 0.0.0.0
        inet6 fe80::42:d1ff:feae:ed22  prefixlen 64  scopeid 0x20<link>
        ether 02:42:d1:ae:ed:22  txqueuelen 0  (Ethernet)
        RX packets 2121  bytes 312830 (305.4 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 737  bytes 76580 (74.7 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.0.105  netmask 255.255.255.0  broadcast 192.168.0.255
        inet6 fe80::8961:8cea:862:8e15  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:ae:88:4d  txqueuelen 1000  (Ethernet)
        RX packets 2121  bytes 312830 (305.4 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 737  bytes 76580 (74.7 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0



[root@worker ~]# docker node ls
ID                           HOSTNAME               STATUS  AVAILABILITY  MANAGER STATUS
34akpqqlz9teyw462dtw4jc06    localhost.localdomain  Ready   Active   
7mlylkldtaqev2nbiq9meflv4 *  worker                 Ready   Active        Leader
[root@worker ~]# docker node ls
ID                           HOSTNAME               STATUS  AVAILABILITY  MANAGER STATUS
34akpqqlz9teyw462dtw4jc06    localhost.localdomain  Ready   Active   
7mlylkldtaqev2nbiq9meflv4 *  worker                 Ready   Active        Leader
[root@worker ~]# service httpd status
Redirecting to /bin/systemctl status httpd.service
Unit httpd.service could not be found.
[root@worker ~]# docker service create --name webserver -p 80:80 httpd
ntdbykt7wevwnwxfda0djgv1c
[root@worker ~]# docker service ls
ID            NAME       MODE        REPLICAS  IMAGE
ntdbykt7wevw  webserver  replicated  0/1       httpd:latest
[root@worker ~]#

worker 

[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

Error response from daemon: This node is not a swarm manager. Use "docker swarm init" or "docker swarm join" to connect this node to swarm and try again.

[root@localhost ~]# docker swarm join \

>     --token SWMTKN-1-5b7tj696sba0gpvhuho6yau5dtl8ns1rd5l3juo7je4vemwny5-7z040pbkdhurt3n3736fdqpfa \

>     192.168.0.105:2377

This node joined a swarm as a worker.

root@worker ~]# docker service create --name webserver1 -p 800:800 nginx
u92m2ffo2n9dd6xw3slo5wtil
[root@worker ~]# 

[root@worker ~]# docker service create --name webserver -p 80:80 nginx

oi3e6rlvuqh539ex1a1jr8vi3

[root@worker ~]# docker service ps webserver

ID            NAME         IMAGE         NODE                   DESIRED STATE  CURRENT STATE           ERROR  PORTS

r4myd22az31c  webserver.1  nginx:latest  localhost.localdomain  Running        Running 22 seconds ago         

[root@worker ~]# docker service ps webserver

[root@worker ~]# docker service ps webserver

ID            NAME         IMAGE         NODE                   DESIRED STATE  CURRENT STATE               ERROR  PORTS

r4myd22az31c  webserver.1  nginx:latest  localhost.localdomain  Running        Running about a minute ago         

q1s7l1kuy8ox  webserver.2  nginx:latest  worker                 Running        Running 5 seconds ago              

nt4rppdc4wez  webserver.3  nginx:latest  localhost.localdomain  Running        Running 5 seconds ago              

rvsiksob8daz  webserver.4  nginx:latest  worker                 Running        Running 5 seconds ago              

5661wi13wymm  webserver.5  nginx:latest  localhost.localdomain  Running        Running 6 seconds ago              

[root@worker ~]# 

https://docs.google.com/document/d/e/2PACX-1vSnYIiX4TCtVM33njZPBJUHZBkJw3_biXsWMjegiRNaSR1PgHK-sDyb7nN_v_mSCkl_tvht8nQGhgK9/pub

[root@worker ~]# docker service rm webserver

webserver

[root@worker ~]# docker service create --replicas 3 --name hello -p 80:80 nginxdemos/hello

wxjn55eeuaukvweovu9izkddz

[root@worker ~]# docker service ps hello

ID            NAME     IMAGE                    NODE                   DESIRED STATE  CURRENT STATE           ERROR  PORTS

47wj28x6ewcd  hello.1  nginxdemos/hello:latest  localhost.localdomain  Running        Starting 3 seconds ago         

ee2m1izxeh7a  hello.2  nginxdemos/hello:latest  worker                 Running        Running 2 seconds ago          

r3uzzgbuzshh  hello.3  nginxdemos/hello:latest  localhost.localdomain  Running        Starting 3 seconds ago         

[root@worker ~]# 

https://docs.google.com/document/d/e/2PACX-1vSnYIiX4TCtVM33njZPBJUHZBkJw3_biXsWMjegiRNaSR1PgHK-sDyb7nN_v_mSCkl_tvht8nQGhgK9/pub