How to install drupal on docker with swarm

How to install drupal on docker with swarm 1) login to docker ( manager node) and create a overlay network for mydrupal docker network create --driver overlay mydrupal (Drupal for Web Content Management) Note: Manager uses RAFT (Consensus Algorithm/Database data which consits of all the database ) API =======================> Accepts the command from the Clients and create the service object Orchestrator =======================> Reconcillation loop for the service objects and creates the tasks Allocater =======================> Allocates the Ipaddress to the tasks Sheduler =======================> Assigns nodes to tasks Dispatcher =======================> checks in on the works Worker node Worker ========================> connects to dispather to check on the assigned tasks Executer ========================> Executes the tasks assigned to worker node. [root@sukhoi /]# docker network ls NETWORK ID NAME DRIVER SCOPE fb31d601ef35 bridge bridge local 07501da8723e docker_gwbridge bridge local a36af19fa85b host host local tf6dmepnxekf ingress overlay swarm wk6guya6sljb mydrupal overlay swarm ==============================> following network will be created. 37ca581e5d57 none null local 2) Create a service for psql ( psql) it will take couple of min to pull the image from the repositary . docker service create --name psql --network mydrupal -e POSTGRES_PASSWORD=JimCarry postgres 3) Once the image pulled verify the same [root@sukhoi /]# docker service ls ID NAME MODE REPLICAS IMAGE PORTS 8q1njxxbsea7 psql replicated 1/1 postgres:latest [root@sukhoi/]# docker service ps psql ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS co8wisdvpdr1 psql.1 postgres:latest sukhoi Running Running 2 minutes ago 4) Create a service to use the drupal to use the network mydrupal. ( it may take couple of min) docker service create --name drupal --network mydrupal -p 80:80 drupal 5) Issue the command to check the status of the services docker service ps drupal watch docker service ls docker service inspect drupal =====================> Inspect Once you install you can try to get in the GUI open the browser and http://x.x.x.x:80 ==================> your server ip and ans ( key in the information)

How to setup a 3 node swarm cluster in OEL 7.6 with Kernel 3.10.0-957.el7.x86_64

1.0) Install Oel 7.2

2.0) Ensure your having having a valid repo configured in /etc/yum.repo/

2.1) yum update -y, Once the latest Kernel is updated reboot the node.

2.2) yum install docker -y ========================> Install docker on all the 3 nodes

3.0) If your behind the proxy you can configure the proxy @ /etc/systemd/system/docker.service.d/

3.1) Create a systemd drop-in directory for the docker service:

$ mkdir -p /etc/systemd/system/docker.service.d

Create a file called /etc/systemd/system/docker.service.d/http-proxy.conf that adds the HTTP_PROXY and HTTPS_PROXY environment variable:

[Service]

Environment="HTTP_PROXY=http://x.x.x.x:80/" HTTPS_PROXY=http://x.x.s.x:80/"

4.0) systemctl enable docker

5.0) systemctl start docker

6.0) Flush changes.

7.0) systemctl daemon-reload

7.1) systemctl show --property Environment docker

Environment=HTTP_PROXY=http://X.X.X.X:8080/ HTTPS_PROXY=http://Y.Y.Y.Y:8080/

7.2) systemctl status docker

docker.service - Docker Application Container Engine

Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)

Drop-In: /etc/systemd/system/docker.service.d

+-docker-sysconfig.conf, http-proxy.conf

Active: active (running) since Mon 2018-11-12 00:26:56 EST; 1h 20min ago

Docs: https://docs.docker.com

Main PID: 20249 (dockerd)

Memory: 73.5M

CGroup: /system.slice/docker.service

+-20249 /usr/bin/dockerd --selinux-enabled --storage-driver devicemapper --storage-opt dm.basesize=25G

+-20260 docker-containerd --config /var/run/docker/containerd/containerd.toml

Nov 12 00:59:08 sukhoi dockerd[20249]: time="2018-11-12T00:59:08.003626658-05:00" level=info msg="NetworkDB stats sukhoi (f512c7cd0519...tMsg/s:0"

Nov 12 01:04:08 sukhoi dockerd[20249]: time="2018-11-12T01:04:08.203598640-05:00" level=info msg="NetworkDB stats sukhoi (f512c7cd0519...tMsg/s:0"

Nov 12 01:09:08 sukhoi dockerd[20249]: time="2018-11-12T01:09:08.403655398-05:00" level=info msg="NetworkDB stats sukhoi (f512c7cd0519...tMsg/s:0"

Nov 12 01:14:08 sukhoi dockerd[20249]: time="2018-11-12T01:14:08.603535523-05:00" level=info msg="NetworkDB stats sukhoi (f512c7cd0519...tMsg/s:0"

Nov 12 01:19:08 sukhoi dockerd[20249]: time="2018-11-12T01:19:08.603644944-05:00" level=info msg="NetworkDB stats sukhoi (f512c7cd0519...tMsg/s:0"

Nov 12 01:24:08 sukhoi dockerd[20249]: time="2018-11-12T01:24:08.803625057-05:00" level=info msg="NetworkDB stats sukhoi (f512c7cd0519...tMsg/s:0"

Nov 12 01:29:09 sukhoi dockerd[20249]: time="2018-11-12T01:29:09.003692469-05:00" level=info msg="NetworkDB stats sukhoi (f512c7cd0519...tMsg/s:0"

Nov 12 01:34:09 sukhoi dockerd[20249]: time="2018-11-12T01:34:09.203640712-05:00" level=info msg="NetworkDB stats sukhoi (f512c7cd0519...tMsg/s:0"

Nov 12 01:39:09 sukhoi dockerd[20249]: time="2018-11-12T01:39:09.403656758-05:00" level=info msg="NetworkDB stats sukhoi (f512c7cd0519...tMsg/s:0"

Nov 12 01:44:09 sukhoi dockerd[20249]: time="2018-11-12T01:44:09.603580926-05:00" level=info msg="NetworkDB stats sukhoi (f512c7cd0519...tMsg/s:0"

Hint: Some lines were ellipsized, use -l to show in full.

7.4 ) docker info, Once the docker is installed

Containers: 0

Running: 0

Paused: 0

Stopped: 0

Images: 0

Server Version: 18.03.1-ol

Storage Driver: devicemapper

Pool Name: docker-8:2-4831-pool

Pool Blocksize: 65.54kB

Base Device Size: 26.84GB

Backing Filesystem: xfs

Udev Sync Supported: true

Data file: /dev/loop0

Metadata file: /dev/loop1

Data loop file: /var/lib/docker/devicemapper/devicemapper/data

Metadata loop file: /var/lib/docker/devicemapper/devicemapper/metadata

Data Space Used: 14.42MB

Data Space Total: 107.4GB

Data Space Available: 107.4GB

Metadata Space Used: 581.6kB

Metadata Space Total: 2.147GB

Metadata Space Available: 2.147GB

Thin Pool Minimum Free Space: 10.74GB

Deferred Removal Enabled: true

Deferred Deletion Enabled: true

Deferred Deleted Device Count: 0

Library Version: 1.02.149-RHEL7 (2018-07-20)

Logging Driver: json-file

Cgroup Driver: cgroupfs

Plugins:

Volume: local

Network: bridge host macvlan null overlay

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

Swarm: inactive

NodeID: zcbc4vv5757m20385cz7jqxpu

Is Manager: true

ClusterID: 1s6r7l37c7bzlvkh6ovthf4tr

Managers: 1

Nodes: 1

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: x.x.x.x

Runtimes: runc

Default Runtime: runc

Init Binary: docker-init

containerd version: 773c489c9c1b21a6d78b5c538cd395416ec50f88

runc version: 4fc53a81fb7c994640722ac585fa9ca548971871

init version: 949e6fa

Security Options:

seccomp

Profile: default

Kernel Version: 3.10.0-327.el7.x86_64

Operating System: Oracle Linux Server 7.2

OSType: linux

Architecture: x86_64

CPUs: 24

Total Memory: 125.7GiB

Name: sukhoi

ID: ZOOZ:24F2:FWUS:OBQ4:DBRU:5YCU:G364:EMQQ:EUZ7:2VGH:4L2W:DPJB

Docker Root Dir: /var/lib/docker

Debug Mode (client): false

Debug Mode (server): false

HTTP Proxy: http://x.x.x.x:80/

HTTPS Proxy: http://x.x.x.x:80/"

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

Labels:

Experimental: false

Insecure Registries:

127.0.0.0/8

Live Restore Enabled: false

8) Once we install the docker ( Default networks)

[root@x4270akash]# docker network ls

NETWORK ID NAME DRIVER SCOPE

29d3ba90ff4c bridge bridge local

8e955dd25905 host host local

63ac0e5cf0e7 none null local

9) Once the docker swarm init command issue it will create two networks overly/ingress/docker_gwbridge ( Following network are used for inter communication)

NETWORK ID NAME DRIVER SCOPE

fb31d601ef35 bridge bridge local

07501da8723e docker_gwbridge bridge local =======================>

a36af19fa85b host host local

tf6dmepnxekf ingress overlay swarm =======================>

37ca581e5d57 none null local

Swarm initialized: current node (dfmvr0p41u2xaroxju772ea8f) is now a manager.

8) From the client you can add the worker to this swarm, run the following command:

docker swarm join --token SWMTKN-1-3pgpsq9agfxbsy2asvjew2p30afm8rdfw5szlh9zcb3c5u8aps-20dz136qydn4n05rkpfe592o0 x.x.x.x:2377

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

[root@sukhoi /]# docker node ls

ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS ENGINE VERSION

v0c5jzt313g58jn5hhl5bxfl2 akash Ready Active 18.03.1-ol

dfmvr0p41u2xaroxju772ea8f * sukhoi Ready Active Leader 18.03.1-ol

sit20yl9qgftlc6r8vie62nax lca Ready Active 18.03.1-ol

Note: Deocker swarm commands only work from the manager.

[root@sukhoi /]# docker info From the manager node

Containers: 0

Running: 0

Paused: 0

Stopped: 0

Images: 0

Server Version: 18.03.1-ol

Storage Driver: devicemapper

Pool Name: docker-8:2-2148748183-pool

Pool Blocksize: 65.54kB

Base Device Size: 26.84GB

Backing Filesystem: xfs

Udev Sync Supported: true

Data file: /dev/loop0

Metadata file: /dev/loop1

Data loop file: /var/lib/docker/devicemapper/devicemapper/data

Metadata loop file: /var/lib/docker/devicemapper/devicemapper/metadata

Data Space Used: 14.35MB

Data Space Total: 107.4GB

Data Space Available: 107.4GB

Metadata Space Used: 17.36MB

Metadata Space Total: 2.147GB

Metadata Space Available: 2.13GB

Thin Pool Minimum Free Space: 10.74GB

Deferred Removal Enabled: true

Deferred Deletion Enabled: true

Deferred Deleted Device Count: 0

Library Version: 1.02.149-RHEL7 (2018-07-20)

Logging Driver: json-file

Cgroup Driver: cgroupfs

Plugins:

Volume: local

Network: bridge host macvlan null overlay

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

Swarm: active =============================================> Swarm

NodeID: dfmvr0p41u2xaroxju772ea8f

Is Manager: true

ClusterID: q2lp94b3oe1a0q6ee3y8y8pv6

Managers: 1 ===============================================>

Nodes: 4 ===============================================>

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: x.x.x.x

Manager Addresses:

x.s.x.x:2377

Runtimes: runc

Default Runtime: runc

Init Binary: docker-init

containerd version: 773c489c9c1b21a6d78b5c538cd395416ec50f88

runc version: 4fc53a81fb7c994640722ac585fa9ca548971871

init version: 949e6fa

Security Options:

seccomp

Profile: default

Kernel Version: 3.10.0-957.el7.x86_64

Operating System: Oracle Linux Server 7.6

OSType: linux

Architecture: x86_64

CPUs: 32

Total Memory: 251.7GiB

Name: sukhoi

ID: DFC4:HDQE:RT3W:LZ7K:FZUT:Z7FD:I36D:IV7F:5U6C:QALR:ISZP:L2V2

Docker Root Dir: /var/lib/docker

Debug Mode (client): false

Debug Mode (server): false

HTTP Proxy: http://x.x.x.x:80/

HTTPS Proxy: http://x.x.x.x:80/"

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

Labels:

Experimental: false

Insecure Registries:

127.0.0.0/8

Regards

Gurudatta N.R

How to setup a 3 node swarm cluster in OEL 7.6 with Kernel 3.10.0-957.el7.x86_64

.

Docker Commands

command to check the full container id

1) docker ps --no-trunc

2) docker run -d --name nginx ( -d is used to run in the background)

3) docker ps -a ( command to check the all docker image command will show all the images not running )

4) docker run -ti --name b2 busybox ( ti means Terminal interactive)

5) ps aux

6) deattach the container

6.1) docker run -ti name b3 busybox

6.2) ps aux; top

CTRL + P + Q detach from the terminal will run from the background

docker attach b3 .

7.0) command to run the command inside the container

docker exec

7.1) docker run -d --name ngnx2 nginx

7.2) docker exec ngnx2 ip a s

7.3) docker exec -ti nginx2 /bin/bash

7.4) ps aux

8.0) docker run --name b4 busybox ip a s will run the container and exit it

8.1) docker ps

9) docker run --name b10 -rm busybox ip a s ( the following command will run the busy box container and removed the container ) used to remove the junk dontainer

9) docker run -rm -u 500:500 busybox ( to find the user id and group id) busybox) container need uid/gid

10) proceed running in the contaier

11) docker top nginx

12) resource usage

13) docker stats nginx

14) stopping and killing container

15 ) docker stop nginx

16) docker start nginx; docker ps, default time to stop the container 10 sec

17) docker stop -t 15 nginx  command to stop the container fter 15 sec.

18 to terminate the running container

docker kill Dockername

19) how to remove the container

19.1) docker rm < Docker name>

19.2) to check the container docker ps -a

19.3)  docker stop ; docker rm -f  docker name < >

19.4) docker rm -v docker name ( remove the docker with persistent data)   be care full

19.5) Container logs

20)

20.1) docker logs < docker name>

20.2) docker logs will be stored in /var/lob docker/container

20.3)  check for the container id

20.4)  go to the directory

20.5)  containerid-Jason.log will hold all the logs.

20.6) Config file are stored in json file.

20.7) docker logs -f

20.8)  docker run -it --name b10 busybox

20.9) Limit memory to container

22) docker run -d --name nginx3 -m 500M nginx

docker stats nginx3

22.1) docker run -d --name nginx4 nginx docker stats  with out memory limit

docker stats nginx4

22.2)  Memory reservation

22.4) docker run -d --name nginx5 -m 512M --memory-reservation 256M nginx

22.5) docker stats nginx5

To check the specific Docker image

1)    Docker search busybox

2)    Official image ( more stars)

3)    Docker search –s 50 busy box ( to search the minimum star)

4)    Docker pull nginx ( pull the latest version)

5)    To pull the specific image

6)    Docker pull nginix:1.9 it will download the 1.9 version nginx

7)    Docker images

8)    Docker pull –a busybox ( to pull all the layers)

9)    Docker images –a will list all the busybox images

10) Removing the images

11) Docker rmi busybox It will remove the latest tag

12) Docker rmi –f busybox ( to remove the container when running ) not best method

13) Create a new image using existing image

14) Docker run –d –name nginx6 nginx

15) Docker exec –ti nginix /bin/bash

16) Aptget update

17) Docker diff nginx 6 list all the changes in the container

18) Docker commit –a “name of the author” –m “A message for the note” docknginix:1

To move to container

1)    Save and export

2)    Docker export nginix6 > nginix.tar ( will have only one layer)

3)    Docker export –o nginx6b.tar nginx6

4)    tar tvf tvf nginx6.tar

5)    how to import the tar archive

6)    docker import nginix6.tar nginx-own:latest

7)    docker images

8)    docker save –o nginix-save.tar nginx:latest

9)    tar tvf nginx-ta.tar | less

10) docker rmi nginx

11) docker load –I nginx-save.tar

12) docker load –I nginix-save.tar

13) command to upload the container to registry

14)    #!/bin/bash

15)    # Delete all containers

16)    docker rm $(docker ps -a -q)

17)    # Delete all images

18)    docker rmi –f  $(docker images -q)

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