docker useful commands
$ docker-machine ip
192.168.99.100
$ docker --version
Docker version 18.03.0-ce, build 0520e24302
$ docker-compose --version
docker-compose version 1.20.1, build 5d8c71b2
docker pull command will search for alpine into docker hub and pull it.
$ docker pull alpine
Using default tag: latest
latest: Pulling from library/alpine
4fe2ade4980c: Pull complete
Digest: sha256:621c2f39f8133acb8e64023a94dbdf0d5ca81896102b9e57c0dc184cadaf5528
Status: Downloaded newer image for alpine:latest
NOTE: Images will get pulled from docker hub in layers.
Hello-World
$ docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
d1725b59e92d: Pull complete
Digest: sha256:0add3ace90ecb4adbf7777e9aacf18357296e799f81cabc9fde470971e499788
Status: Downloaded newer image for hello-world:latest
Hello from Docker!
This message shows that your installation appears to be working correctly.
To generate this message, Docker took the following steps:
1. The Docker client contacted the Docker daemon.
2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
(amd64)
3. The Docker daemon created a new container from that image which runs the
executable that produces the output you are currently reading.
4. The Docker daemon streamed that output to the Docker client, which sent it
to your terminal.
To try something more ambitious, you can run an Ubuntu container with: Here -t -> Terminal, -i -> interactive
$ docker run -it ubuntu bash
Share images, automate workflows, and more with a free Docker ID:
https://hub.docker.com/
For more examples and ideas, visit:
https://docs.docker.com/get-started/
Download/fetch the Java8
$ docker pull java:8
8: Pulling from library/java
Digest: sha256:c1ff613e8ba25833d2e1940da0940c3824f03f802c449f3d1815a66b7f8c0e9d
Status: Image is up to date for java:8
If I want to pull specific/particular image
$ docker pull ubuntu:14.04
14.04: Pulling from library/ubuntu
aa1a66b8583a: Pull complete
aaccc2e362b2: Pull complete
a53116a2808f: Pull complete
b3a7298e318c: Pull complete
Digest: sha256:f961d3d101e66017fc6f0a63ecc0ff15d3e7b53b6a0ac500cd1619ded4771bd6
Status: Downloaded newer image for ubuntu:14.04
List Docker Images
$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
kbastani/movies-ui latest 0a107de3a95e 40 minutes ago 761MB
kbastani/movie-microservice latest 31ca109da9fa 41 minutes ago 819MB
kbastani/consul-microservice latest 9e0b6f419feb 41 minutes ago 723MB
kbastani/hystrix-dashboard latest cb65337bc385 42 minutes ago 696MB
kbastani/config-microservice latest e706a42dfb09 43 minutes ago 724MB
kbastani/recommendation-microservice latest 51cede9d96de 43 minutes ago 819MB
kbastani/api-gateway-microservice latest 1056ed563cba 44 minutes ago 716MB
kbastani/discovery-microservice latest bc7809bb1600 44 minutes ago 726MB
kbastani/users-microservice latest ac3f5e3dc295 45 minutes ago 820MB
$ docker rmi ubuntu:14.04
Untagged: ubuntu:14.04
Untagged: ubuntu@sha256:f961d3d101e66017fc6f0a63ecc0ff15d3e7b53b6a0ac500cd1619ded4771bd6
Deleted: sha256:f17b6a61de28594fb3ec53b1cca7164fba66357d1635b414eeed4d586744342e
Deleted: sha256:62faa9fad606573b982c0444778746244947829aa8ebefbf29b3a5291875dc84
Deleted: sha256:5848a5ca21d07333dbdf428bbdde15d5c7cecc7614b24562b49b205d8d20199a
Deleted: sha256:cd509aa64a17350b03bf6af7f41d849fc273a0f2c9d1a309e897380617fca46e
Deleted: sha256:960c7c5516b277c5c23644b2cfb53d0106543eace96d517141611fa34e1b957c
docker run -d -P seqvence/static-site
Unable to find image 'seqvence/static-site:latest' locally
latest: Pulling from seqvence/static-site
fdd5d7827f33: Downloading [=======> ] 7.318 MB/51.37 MB
fdd5d7827f33: Pull complete
a3ed95caeb02: Pull complete
716f7a5f3082: Pull complete
7b10f03a0309: Pull complete
aff3ab7e9c39: Pull complete
Digest: sha256:41b286105f913fb7a5fbdce28d48bc80f1c77e3c4ce1b8280f28129ae0e94e9e
Status: Downloaded newer image for seqvence/static-site:latest
e9da3f71a2065765e6a8e11cb85f6d4c8ed1868d75e77f58459558f840157f47
docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
e9da3f71a206 seqvence/static-site "/bin/sh -c 'cd /usr/" About a minute ago Up About a minute 0.0.0.0:32769->80/tcp, 0.0.0.0:32768->443/tcp focused_noyce
http://ech-10-157-136-3:32769/
Remove specific Image, here IMAGE ID = f17b6a61de28
$ docker rmi f17b6a61de28
Untagged: ubuntu:14.04
Untagged: ubuntu@sha256:f961d3d101e66017fc6f0a63ecc0ff15d3e7b53b6a0ac500cd1619ded4771bd6
Deleted: sha256:f17b6a61de28594fb3ec53b1cca7164fba66357d1635b414eeed4d586744342e
Deleted: sha256:62faa9fad606573b982c0444778746244947829aa8ebefbf29b3a5291875dc84
Deleted: sha256:5848a5ca21d07333dbdf428bbdde15d5c7cecc7614b24562b49b205d8d20199a
Deleted: sha256:cd509aa64a17350b03bf6af7f41d849fc273a0f2c9d1a309e897380617fca46e
Deleted: sha256:960c7c5516b277c5c23644b2cfb53d0106543eace96d517141611fa34e1b957c
Remove Docker Images
- docker rmi
- docker rmi
- docker rmi $(docker images -f "dangling=true" -q)
-quite, -q ==> Only shows numeric Ids -filter, -f ==> filter output based on condition provided.
-a, -all => Shows all containers (default shows just running). -q => Only displays numeric Ids.
- docker images prune
- Removes dangling images (images which are not used by any containers)
List running containers
$ docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
e91cd8fbe0da kbastani/hystrix-dashboard "java -Djava.securit…" About an hour ago Exited (137) 31 minutes ago docker_hystrix_1
7368e0d8fc42 kbastani/api-gateway-microservice "java -Djava.securit…" About an hour ago Exited (143) 31 minutes ago docker_gateway_1
f3cf5171ef33 kbastani/movies-ui "java -Djava.securit…" About an hour ago Exited (143) 31 minutes ago docker_moviesui_1
10ad4716e9b7 kbastani/movie-microservice "java -Djava.securit…" About an hour ago Exited (1) 39 minutes ago docker_movie_1
f78f4df9206f kbastani/users-microservice "java -Djava.securit…" About an hour ago Exited (1) 39 minutes ago docker_user_1
fac92c7a4c26 kbastani/recommendation-microservice "java -Djava.securit…" About an hour ago Exited (1) 39 minutes ago docker_recommendation_1
e8d4af14ceb6 kbastani/config-microservice "java -Djava.securit…" About an hour ago Exited (143) 31 minutes ago docker_configserver_1
6a5223a4b1d1 kbastani/discovery-microservice "java -Djava.securit…" About an hour ago Exited (143) 31 minutes ago docker_discovery_1
This is very cool
(Note: Make sure ubuntu latest image present in docker container)
$ docker run -it --name temp ubuntu:latest /bin/bash
root@4abe96b094af:/#
Note - Press Ctrl + P + Q get out of this
Kill all running containers
docker kill $(docker ps -q)
delete all stop containers
docker rmi $(docker ps -a -q)
delete all images
(Note: This will delete all layers of images)
docker rmi $(docker images -q)
Setup Redis
$ docker pull redis
Using default tag: latest
latest: Pulling from library/redis
a5a6f2f73cd8: Pull complete
a6d0f7688756: Pull complete
53e16f6135a5: Pull complete
f52b0cc4e76a: Pull complete
e841feee049e: Pull complete
ccf45e5191d0: Pull complete
Digest: sha256:010a8bd5c6a9d469441aa35187d18c181e3195368bce309348b3ee639fce96e0
Status: Downloaded newer image for redis:latest
$ docker run --name some-redis -d redis
9c309a278d2f2ddafc5b9f355dde74055781619d7323ea8f3125106faaff32c2
$ docker exec -it some-redis redis-cli
127.0.0.1:6379>
$ docker info
Containers: 8
Running: 0
Paused: 0
Stopped: 8
Images: 69
Server Version: 18.06.1-ce
Storage Driver: aufs
Root Dir: /mnt/sda1/var/lib/docker/aufs
Backing Filesystem: extfs
Dirs: 64
Dirperm1 Supported: true
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
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 468a545b9edcd5932818eb9de8e72413e616e86e
runc version: 69663f0bd4b60df09991c08812a60108003fa340
init version: fec3683
Security Options:
seccomp
Profile: default
Kernel Version: 4.9.93-boot2docker
Operating System: Boot2Docker 18.06.1-ce (TCL 8.2.1); HEAD : c7e5c3e - Wed Aug 22 16:27:42 UTC 2018
OSType: linux
Architecture: x86_64
CPUs: 1
Total Memory: 995.6MiB
Name: default
ID: JCFC:EWS2:IQH7:T7FE:RKJ6:222L:4CZR:KOJZ:TDXN:EXBV:RDI5:QXMN
Docker Root Dir: /mnt/sda1/var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
No Proxy: 192.168.99.100
Registry: https://index.docker.io/v1/
Labels:
provider=virtualbox
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
Docker Swarm
Containers Vs VM
Docker containers are just isolated system environment run with the same kernel as host.
Docker Objects
- Images - Like VM, container image is template for containers. They consist mostly of file system, but also metadata about the container including how we should operate by default.
- sharing image using docker commands
- Docker manages images on host gives you the tools to transport them across host. Usually by registries.
- Containers - are instances of images, basically copies then isolated process inside them. To the process it looks as if it has own system based on the file system of image. They can change the file system but any changes have to be committed back to an image to persist.
- Docker manages images like processes - meaning you can start, stop and run in the background, run interactively etc..
-
Dockerfiles - are build files that instructs docker how to consistently configure container images.
-
Registries - serve images you can pull from & push into from docker. Docker index is considered main public registry.
Layered - Copy on Write Filesystem
- Content Layer
- init layer
uses layer copy on write FS (File System) i.e., file you see on container when it start are actually file images in the system until changes are made.
Changes made in the container are collectively make up a layer & can be committed to an image. Images are just collection of layers on file system changes. This allows docker efficient with the disk space, also registries are important. Since they're aware about layers and cannot send layers, you dont have when you pull in images.
Containers are not just file systems, they run using commands. This command run in process isolation using namespace and 'C' groups.
[dc-user@ech-10-157-136-3 ~]$ docker run -it ubuntu:latest bash
Unable to find image 'ubuntu:latest' locally
latest: Pulling from library/ubuntu
38e2e6cd5626: Pull complete
705054bc3f5b: Pull complete
c7051e069564: Pull complete
7308e914506c: Pull complete
Digest: sha256:945039273a7b927869a07b375dc3148de16865de44dec8398672977e050a072e
Status: Downloaded newer image for ubuntu:latest
root@25f13c4f1816:/# cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=18.04
DISTRIB_CODENAME=bionic
DISTRIB_DESCRIPTION="Ubuntu 18.04.1 LTS"
root@25f13c4f1816:/#
root@25f13c4f1816:/# exit
exit
[dc-user@ech-10-157-136-3 ~]$ docker ps -l --format=$FORMAT
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
6a66709a8a05 ubuntu:latest "bash" 4 minutes ago Exited (0) 24 seconds ago clever_davinci
[dc-user@ech-10-157-136-3 ~]$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
e9da3f71a206 seqvence/static-site "/bin/sh -c 'cd /usr/" 6 weeks ago Up 6 weeks 0.0.0.0:32769->80/tcp, 0.0.0.0:32768->443/tcp focused_noyce
create the file touch MY_FILE
[dc-user@ech-10-157-136-3 ~]$ docker commit a25b4e978628
sha256:d55cf549af410b694697f812829d5cf41fbf32bf5f410c5babe9df86686270a2
[dc-user@ech-10-157-136-3 ~]$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
my-new-image latest d55cf549af41 2 minutes ago 87.47 MB
ubuntu latest 20bb25d32758 8 days ago 87.47 MB
[dc-user@ech-10-157-136-3 ~]$
docker run -ti my-new-image bash
root@b2845052a960:/# ls
MY_FILE bin boot dev etc home lib lib64 media mnt opt proc root run sbin srv sys tmp usr var
root@b2845052a960:/#
[dc-user@ech-10-157-136-3 ~]$ docker container ls
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
[dc-user@ech-10-157-136-3 ~]$ DOCKER_HIDE_LEGACY_COMMANDS=true docker --help
Usage: docker COMMAND
A self-sufficient runtime for containers
Options:
--config string Location of client config files (default "/home/dc-user/.docker")
-D, --debug Enable debug mode
--help Print usage
-H, --host list Daemon socket(s) to connect to
-l, --log-level string Set the logging level ("debug"|"info"|"warn"|"error"|"fatal") (default "info")
--tls Use TLS; implied by --tlsverify
--tlscacert string Trust certs signed only by this CA (default "/home/dc-user/.docker/ca.pem")
--tlscert string Path to TLS certificate file (default "/home/dc-user/.docker/cert.pem")
--tlskey string Path to TLS key file (default "/home/dc-user/.docker/key.pem")
--tlsverify Use TLS and verify the remote
-v, --version Print version information and quit
Management Commands:
container Manage containers
image Manage images
network Manage networks
node Manage Swarm nodes
plugin Manage plugins
secret Manage Docker secrets
service Manage services
stack Manage Docker stacks
swarm Manage Swarm
system Manage Docker
volume Manage volumes
Commands:
build Build an image from a Dockerfile
login Log in to a Docker registry
logout Log out from a Docker registry
run Run a command in a new container
search Search the Docker Hub for images
version Show the Docker version information
Run 'docker COMMAND --help' for more information on a command.
[dc-user@ech-10-157-136-3 ~]$
[dc-user@ech-10-157-136-3 ~]$ docker container --help
Usage: docker container COMMAND
Manage containers
Options:
--help Print usage
Commands:
attach Attach local standard input, output, and error streams to a running container
commit Create a new image from a container's changes
cp Copy files/folders between a container and the local filesystem
create Create a new container
diff Inspect changes to files or directories on a container's filesystem
exec Run a command in a running container
export Export a container's filesystem as a tar archive
inspect Display detailed information on one or more containers
kill Kill one or more running containers
logs Fetch the logs of a container
ls List containers
pause Pause all processes within one or more containers
port List port mappings or a specific mapping for the container
prune Remove all stopped containers
rename Rename a container
restart Restart one or more containers
rm Remove one or more containers
run Run a command in a new container
start Start one or more stopped containers
stats Display a live stream of container(s) resource usage statistics
stop Stop one or more running containers
top Display the running processes of a container
unpause Unpause all processes within one or more containers
update Update configuration of one or more containers
wait Block until one or more containers stop, then print their exit codes
Run 'docker container COMMAND --help' for more information on a command.
[dc-user@ech-10-157-136-3 ~]$ docker container run --help
docker container run -it jboss/wildfly
[dc-user@ech-10-157-136-3 ~]$ docker container run -d jboss/wildfly
6f7a0d1d83efdc1929c12c83986a0861c94422dc8d86862114dd33f9896eda16
[dc-user@ech-10-157-136-3 ~]$ docker container ls
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
6f7a0d1d83ef jboss/wildfly "/opt/jboss/wildfl..." 20 seconds ago Up 19 seconds 8080/tcp sleepy_euclid
9bc9a8210f1c jboss/wildfly "/opt/jboss/wildfl..." 43 seconds ago Up 41 seconds 8080/tcp priceless_rosalind
c27b1024702a jboss/wildfly "/opt/jboss/wildfl..." About a minute ago Up About a minute 8080/tcp priceless_wright
[dc-user@ech-10-157-136-3 ~]$ docker container stop 6f7a0d1d83ef 9bc9a8210f1c c27b1024702a
6f7a0d1d83ef
9bc9a8210f1c
c27b1024702a
[dc-user@ech-10-157-136-3 ~]$ docker container ls
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
[dc-user@ech-10-157-136-3 ~]$ docker container ls -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
6f7a0d1d83ef jboss/wildfly "/opt/jboss/wildfl..." 2 minutes ago Exited (0) About a minute ago sleepy_euclid
9bc9a8210f1c jboss/wildfly "/opt/jboss/wildfl..." 3 minutes ago Exited (0) About a minute ago priceless_rosalind
0d8aaa7e04b1 jboss/wildfly "/opt/jboss/wildfl..." 4 minutes ago Exited (0) 3 minutes ago vibrant_leakey
c27b1024702a jboss/wildfly "/opt/jboss/wildfl..." 4 minutes ago Exited (0) About a minute ago priceless_wright
b9a7008bd9ae jboss/wildfly "/opt/jboss/wildfl..." 7 minutes ago Exited (0) 5 minutes ago naughty_roentgen
68ab6fe6266d ubuntu:latest "bash" 20 hours ago Exited (0) 20 hours ago cocky_mclean
6a66709a8a05 ubuntu:latest "bash" 22 hours ago Exited (0) 21 hours ago clever_davinci
b2845052a960 my-new-image "bash" 22 hours ago Exited (0) 22 hours ago elated_tesla
d5ac72cbe5ba my-image "bash" 22 hours ago Exited (0) 22 hours ago jolly_bassi
68393fa94b79 ubuntu:latest "bash" 22 hours ago Exited (0) 22 hours ago compassionate_lumiere
36037204973b ubuntu:latest "bash" 22 hours ago Exited (0) 22 hours ago jolly_hugle
ddd5b5dfbdbf ubuntu:latest "bash" 22 hours ago Exited (0) About an hour ago small_darwin
a25b4e978628 ubuntu:latest "bash" 24 hours ago Exited (0) 24 hours ago jovial_payne
a2f8935a71fb ubuntu:latest "bash" 24 hours ago Exited (0) 22 hours ago pensive_mayer
25f13c4f1816 ubuntu:latest "bash" 24 hours ago Exited (0) 24 hours ago clever_bartik
e9da3f71a206 seqvence/static-site "/bin/sh -c 'cd /u..." 6 weeks ago Exited (0) About an hour ago focused_noyce
5d2c2fce2d95 kbastani/hystrix-dashboard "java -Djava.secur..." 6 weeks ago Exited (0) 6 weeks ago docker_hystrix_1
9355865d9a72 kbastani/api-gateway-microservice "java -Djava.secur..." 6 weeks ago Exited (0) 6 weeks ago docker_gateway_1
f16762e202fe kbastani/recommendation-microservice "java -Djava.secur..." 6 weeks ago Exited (0) 6 weeks ago docker_recommendation_1
e5b93365939f kbastani/movies-ui "java -Djava.secur..." 6 weeks ago Exited (0) 6 weeks ago docker_moviesui_1
4d750d4b602e kbastani/users-microservice "java -Djava.secur..." 6 weeks ago Exited (0) 6 weeks ago docker_user_1
3062842547fa kbastani/movie-microservice "java -Djava.secur..." 6 weeks ago Exited (0) 6 weeks ago docker_movie_1
d7ed201425b3 kbastani/config-microservice "java -Djava.secur..." 6 weeks ago Exited (0) 6 weeks ago docker_configserver_1
f9a10b7c0d0a kbastani/discovery-microservice "java -Djava.secur..." 6 weeks ago Exited (0) 6 weeks ago docker_discovery_1
b132a4059228 c49319bd6912 "sh -c 'java $JAVA..." 8 weeks ago Exited (0) 8 weeks ago sad_joliot
2b8dd116ad20 c49319bd6912 "sh -c 'java $JAVA..." 8 weeks ago Created sleepy_hoover
51fef35f4ad4 c49319bd6912 "sh -c 'java $JAVA..." 8 weeks ago Exited (0) 8 weeks ago jolly_raman
d2ea8a77ba54 redis "docker-entrypoint..." 2 months ago Exited (0) 2 months ago some-redis
1be4f5dde2fb a02eab9e2434 "/entrypoint.sh my..." 2 months ago Exited (0) 2 months ago mysql
0f9abac69c0a f991c20cb508 "docker-entrypoint..." 2 months ago Exited (0) 2 months ago stoic_cray
f903d1f31bae 4ab4c602aa5e "/hello" 2 months ago Exited (0) 2 months ago hopeful_sammet
4b4685bedbee redis "docker-entrypoint..." 2 months ago Exited (0) 2 months ago peaceful_dubinsky
9ab08df5606e f991c20cb508 "docker-entrypoint..." 2 months ago Exited (0) 2 months ago tiny_varahamihira
ef7630c911c8 4ab4c602aa5e "/hello" 2 months ago Exited (0) 2 months ago backstabbing_lalande
e7d9e3713f5c 93fd78260bd1 "/bin/bash" 2 months ago Exited (0) 2 months ago angry_hodgkin
970c680f4fa6 93fd78260bd1 "/bin/bash" 2 months ago Exited (0) 2 months ago mad_goldstine
5ca8716abba8 97319b0b7d17 "ruby hello.rb" 2 months ago Exited (0) 2 months ago modest_chandrasekhar
50e4e8c9923f ec347d11e305 "echo 'Hello O'Rei..." 2 months ago Exited (0) 2 months ago boring_bartik
6f2025730fff c54a2cc56cbb "/hello" 2 years ago Exited (0) 2 years ago amazing_lumiere
assign the name relevant to my application
docker container run -d --name web jboss/wildfly
2019f12e23c71d5076eea22e3ee79d4655be47d0a7b8c046bc6b0ae6340dc96d
docker container ls -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
2019f12e23c7 jboss/wildfly "/opt/jboss/wildfl..." 18 seconds ago Up 16 seconds 8080/tcp web
Stop the container and remove it (single command -f --> stops and removes)
docker container rm -f web
web
If I want to run the shell in the container:
Note: -it -> Interactive way we can see logs on the shell...but -d (detached mode), we can see only long id.
[dc-user@ech-10-157-136-3 ~]$ docker container run -it --name web jboss/wildfly bash
[jboss@e5226e05529f ~]$ ls
wildfly
[jboss@e5226e05529f ~]$ cd wildfly/
[jboss@e5226e05529f wildfly]$ pwd
/opt/jboss/wildfly
[jboss@e5226e05529f wildfly]$ ls
LICENSE.txt README.txt appclient bin copyright.txt docs domain jboss-modules.jar modules standalone welcome-content
[jboss@e5226e05529f wildfly]$ cd standalone/
[jboss@e5226e05529f standalone]$ ls -la
total 8
drwxrwxr-x 6 jboss root 64 Jan 5 19:10 .
drwxrwxr-x 12 jboss root 4096 Jan 5 19:10 ..
drwxrwxr-x 2 jboss root 4096 Jan 11 09:19 configuration
drwxrwxr-x 2 jboss root 23 Jan 11 09:19 deployments
drwxrwxr-x 3 jboss root 16 Jan 5 19:10 lib
drwxrwxr-x 3 jboss root 17 Jan 5 19:10 tmp
[jboss@e5226e05529f standalone]$ exit
exit
[dc-user@ech-10-157-136-3 ~]$
Run container(ports and volumes)
Note: -P which says take all exposed ports & published them in pre-defined range -p take port 8080 on the host and map it to port
docker container run -d --name web -P jboss/wildfly
ea9ac53dcc4f8b33b859fe8a99b49722a97496a5f8bdee728c89ddf4a8120735
docker container ls
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
ea9ac53dcc4f jboss/wildfly "/opt/jboss/wildfl..." 36 seconds ago Up 35 seconds 0.0.0.0:32768->8080/tcp web
Note - 0.0.0.0:32768->8080/tcp, take all the network interfaces on the host which is indicated by 0.0.0.0 port 32768 over there and reidirect it to port 8080 in the container
Access the link: http://10.157.136.3:32768/
If I want to see the logs of docker container
docker container logs web
# stop the docker container
docker container stop web
web
# Remove container
docker container rm web
web
docker container run -d --name web -p 8080:8080 jboss/wildfly
Now, access the link: http://10.157.136.3:8080/
Note: Go to the location where sample.war file present and then execute the following commands:
docker container run -d --name web -p 8080:8080 -v `pwd`/webapp.war:/opt/jboss/wildfly/standalone/deployments/webapp.war jboss/wildfly
c4bd4393b395f336a4a5e544b9c5ac29628c6953a5d18f6d3084eda91f581501
see the logs
docker container logs web
we can also tail the logs:
docker container logs web -f
curl http://localhost:8080/webapp/resources/persons
<?xml version="1.0" encoding="UTF-8" standalone="yes"?><collection><person><name>Penny</name></person><person><name>Leonard</name></person><person><name>Sheldon</name></person><person><name>Amy</name></person><person><name>Howard</name></person><person><name>Bernadette</name></person><person><name>Raj</name></person><person><name>Priya</name></person></collection>
From Browser:
http://10.157.136.3:8080/webapp/resources/persons
Create your first java docker image
Note: -t - tags . means build context
Dockerfile
FROM openjdk:jdk-alpine
CMD java -version
docker image build -t hellojava .
Sending build context to Docker daemon 2.048kB
Step 1/2 : FROM openjdk
latest: Pulling from library/openjdk
ab1fc7e4bf91: Pull complete
35fba333ff52: Pull complete
f0cb1fa13079: Pull complete
3d1dd648b5ad: Pull complete
a9f886e483d6: Pull complete
f0c295b9cf6e: Pull complete
afe560095725: Pull complete
dc8253cd29cd: Pull complete
6885295983c8: Pull complete
Digest: sha256:761a6053925601d420754753cfce5b5527478991f30ae21a49cfac019323935d
Status: Downloaded newer image for openjdk:latest
---> 2cbfaac94298
Step 2/2 : CMD java -version
---> Running in c892a4ce2a8e
---> 920a2b72ca8a
Removing intermediate container c892a4ce2a8e
Successfully built 920a2b72ca8a
Successfully tagged hellojava:latest
docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
hellojava latest 0bf7bff6fed1 18 seconds ago 821MB
openjdk latest 2cbfaac94298 9 days ago 821MB
docker container run hellojava
openjdk version "11.0.1" 2018-10-16
OpenJDK Runtime Environment (build 11.0.1+13-Debian-2bpo91)
OpenJDK 64-Bit Server VM (build 11.0.1+13-Debian-2bpo91, mixed mode, sharing)
docker image build -t hellojava:2 .
Sending build context to Docker daemon 2.048kB
Step 1/2 : FROM openjdk:jdk-alpine
jdk-alpine: Pulling from library/openjdk
8e3ba11ec2a2: Pull complete
311ad0da4533: Pull complete
df312c74ce16: Pull complete
Digest: sha256:1fd5a77d82536c88486e526da26ae79b6cd8a14006eb3da3a25eb8d2d682ccd6
Status: Downloaded newer image for openjdk:jdk-alpine
---> 5801f7d008e5
Step 2/2 : CMD java -version
---> Running in 865e514a63ad
---> 5e0a037757fb
Removing intermediate container 865e514a63ad
Successfully built 5e0a037757fb
Successfully tagged hellojava:2
docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
hellojava 2 5e0a037757fb 19 seconds ago 103MB
hellojava latest 0bf7bff6fed1 5 minutes ago 821MB
openjdk latest 2cbfaac94298 9 days ago 821MB
openjdk jdk-alpine 5801f7d008e5 6 months ago 103MB
docker container run hellojava:2
openjdk version "1.8.0_171"
OpenJDK Runtime Environment (IcedTea 3.8.0) (Alpine 8.171.11-r0)
OpenJDK 64-Bit Server VM (build 25.171-b11, mixed mode)
Copy Files in the docker image
- COPY instructions: Copy new files or directories to the container filesystem
- ADD instructions:
COPY instructions
Allow tar file auto-extraction in the image
- For ex: ADD app.tar.gz /opt/var/myapp Can download files from remote URL
- Recommanded to use CURL or wget instead
Dockerfile
FROM jboss/wildfly
COPY webapp.war /opt/jboss/wildfly/standalone/deployments/webapp.war
docker image build -t helloweb .
Sending build context to Docker daemon 9.216kB
Step 1/2 : FROM jboss/wildfly
latest: Pulling from jboss/wildfly
aeb7866da422: Pull complete
157601a0b538: Pull complete
642f4164f381: Pull complete
bda512e97517: Pull complete
4cccaafdae21: Pull complete
Digest: sha256:310dabba2d67c98a22fd8f2e51fcb8575d3071737159a75e7edd5182b505dfff
Status: Downloaded newer image for jboss/wildfly:latest
---> 2602b4852593
Step 2/2 : COPY webapp.war /opt/jboss/wildfly/standalone/deployments/webapp.war
---> 6ab53ec1a8c9
Removing intermediate container cdfc09926e98
Successfully built 6ab53ec1a8c9
Successfully tagged helloweb:latest
docker container run -p 8080:8080 -d helloweb
d65f1c6b79828c17fbe2a720259d0b4708bae10aad97b715941f5d26ddfc7026
docker container ls
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
d65f1c6b7982 helloweb "/opt/jboss/wildfl..." About a minute ago Up About a minute 0.0.0.0:8080->8080/tcp determined_easley
curl http://localhost:8080/webapp/resources/persons
<?xml version="1.0" encoding="UTF-8" standalone="yes"?><collection><person><name>Penny</name></person><person><name>Leonard</name></person><person><name>Sheldon</name></person><person><name>Amy</name></person><person><name>Howard</name></person><person><name>Bernadette</name></person><person><name>Raj</name></person><person><name>Priya</name></person></collection>
Run JAR files from the docker
Goto the chapter2, create Dockerfile
FROM openjdk:jdk-alpine
COPY myapp/target/myapp-1.0-SNAPSHOT.jar /deployments/
CMD java -jar /deployments/myapp-1.0-SNAPSHOT.jar
Now, go to the myapp directory and >mvn clean install -DskipTests Note: Make sure the myapp-1.0-SNAPSHOT.jar is created there.
docker build -t hellojava:3 .
Sending build context to Docker daemon 55.3kB
Step 1/3 : FROM openjdk:jdk-alpine
---> 5801f7d008e5
Step 2/3 : COPY myapp/target/myapp-1.0-SNAPSHOT.jar /deployments/
---> 6ab779dff505
Removing intermediate container c505ed53daae
Step 3/3 : CMD java -jar /deployments/myapp-1.0-SNAPSHOT.jar
---> Running in 0f4c47edb022
---> 841cbd40188d
Removing intermediate container 0f4c47edb022
Successfully built 841cbd40188d
Successfully tagged hellojava:3
docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
hellojava 3 841cbd40188d 2 minutes ago 103MB
helloweb latest 6ab53ec1a8c9 14 minutes ago 675MB
hellojava 2 5e0a037757fb 40 minutes ago 103MB
hellojava latest 0bf7bff6fed1 45 minutes ago 821MB
openjdk latest 2cbfaac94298 9 days ago 821MB
jboss/wildfly latest 2602b4852593 3 weeks ago 675MB
openjdk jdk-alpine 5801f7d008e5 6 months ago 103MB
docker container run hellojava:3 Hello World!
How to repacage and rebuild the application??
Change the syso statement, build the maven project using >mvn clean install -DskipTests and again package the image
docker build -t hellojava:4 .
Sending build context to Docker daemon 55.3kB
Step 1/3 : FROM openjdk:jdk-alpine
---> 5801f7d008e5
Step 2/3 : COPY myapp/target/myapp-1.0-SNAPSHOT.jar /deployments/
---> b315a06e9573
Removing intermediate container bdeaa1c29b26
Step 3/3 : CMD java -jar /deployments/myapp-1.0-SNAPSHOT.jar
---> Running in 90ee32aff31c
---> b494d9535490
Removing intermediate container 90ee32aff31c
Successfully built b494d9535490
Successfully tagged hellojava:4
docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
hellojava 4 b494d9535490 28 seconds ago 103MB
hellojava 3 841cbd40188d 7 minutes ago 103MB
helloweb latest 6ab53ec1a8c9 19 minutes ago 675MB
hellojava 2 5e0a037757fb 45 minutes ago 103MB
hellojava latest 0bf7bff6fed1 About an hour ago 821MB
openjdk latest 2cbfaac94298 9 days ago 821MB
jboss/wildfly latest 2602b4852593 3 weeks ago 675MB
openjdk jdk-alpine 5801f7d008e5 6 months ago 103MB
docker container run hellojava:4
Howdy World!
docker container run hellojava:3
Hello World!
Other Docker instructions
RUN and CMD
-
RUN: used for installing software package RUN apt-get update && apt-get install -y git RUN /opt/jboss/wildfly/bin/add-user.sh admin Admin#007 -silent
-
CMD: defaults for executing container; can be overriden from CLI CMD ["/opt/jboss/wildfly/bin/standalone.sh", "-b", "0.0.0.0", "-bmanagement", "0.0.0.0"] docker run mywildfly bash
-
ENTRYPOINT: configures the container executable; can be overridden using --entrypoint from CLI Default value: /bin/sh -c ENTRYPOINT ["/entrypoint.sh"]
Expose and Volume
-
EXPOSE: network ports on which the container is listening For ex: EXPOSE 9990 Need to explicily publish the host port
-
VOLUME: creates a mount point with the specified name VOLUME /opt/couchbase/var docker container run ... -v ~/data:/opt/couchbase/var
USER and HEALTHCHECK
-
USER : sets the user name or UID to use when running the image
-
HEALTHCHECK: performs a healthcheck on the application inside the container HEALTHCHECK --interval=5s --timeout=3s CMD curl --fail http://localhost:8091/pools || exit 1
docker-java-sample - download this from https://github.com/arun-gupta/docker-java-sample
Docker and Maven
- Packaging and running the java application exclusively with Docker requires hard coding
- Typical java workflow includes Maven and other tools
- Maven plugins available for Docker
mvn package -Pdocker
docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
hellojava latest 006b6c0ea07b 11 seconds ago 821MB
mvn install -Pdocker
Tag and Share Docker Images
Instead of using the above hack from old days you can use now:
docker image prune -a
docker container ls -aq
d65f1c6b7982
docker container rm -f $(docker container ls -aq)
d65f1c6b7982
docker image build .
Sending build context to Docker daemon 2.048kB
Step 1/2 : FROM openjdk:jdk-alpine
jdk-alpine: Pulling from library/openjdk
8e3ba11ec2a2: Pull complete
311ad0da4533: Pull complete
df312c74ce16: Pull complete
Digest: sha256:1fd5a77d82536c88486e526da26ae79b6cd8a14006eb3da3a25eb8d2d682ccd6
Status: Downloaded newer image for openjdk:jdk-alpine
---> 5801f7d008e5
Step 2/2 : CMD echo "This is v1"
---> Running in c3292404af9b
---> a5d71ef27da8
Removing intermediate container c3292404af9b
Successfully built a5d71ef27da8
docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
<none> <none> a5d71ef27da8 33 seconds ago 103MB
openjdk jdk-alpine 5801f7d008e5 6 months ago 103MB
Without TAG and REPOSITORY, run the container by IMAGE ID
docker container run a5d71ef27da8
This is v1
docker image build -t helloworld .
Sending build context to Docker daemon 2.048kB
Step 1/2 : FROM openjdk:jdk-alpine
---> 5801f7d008e5
Step 2/2 : CMD echo "This is v1"
---> Using cache
---> a5d71ef27da8
Successfully built a5d71ef27da8
Successfully tagged helloworld:latest
docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
helloworld latest a5d71ef27da8 3 minutes ago 103MB
openjdk jdk-alpine 5801f7d008e5 6 months ago 103MB
docker container run helloworld
This is v1
docker container run helloworld:latest
This is v1
Now I'm going to remove the images with the latest tag
docker image rm helloworld:latest
Error response from daemon: conflict: unable to remove repository reference "helloworld:latest" (must force) - container a41572d49e45 is using its referenced image a5d71ef27da8
docker container ls -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
173f5c83b67a helloworld:latest "/bin/sh -c 'echo ..." 50 seconds ago Exited (0) 49 seconds ago wizardly_heisenberg
1a5c5040bc06 helloworld:latest "/bin/sh -c 'echo ..." 52 seconds ago Exited (0) 51 seconds ago upbeat_beaver
a41572d49e45 helloworld:latest "/bin/sh -c 'echo ..." 56 seconds ago Exited (0) 55 seconds ago elegant_beaver
docker container rm -f $(docker container ls -aq)
173f5c83b67a
1a5c5040bc06
a41572d49e45
docker image rm helloworld:latest
Untagged: helloworld:latest
Deleted: sha256:a5d71ef27da87f3407e228f6c90fd21c367ad0f662b399d6480499d619d23cbb
docker image build -t hellowold:1 .
Sending build context to Docker daemon 2.048kB
Step 1/2 : FROM openjdk:jdk-alpine
---> 5801f7d008e5
Step 2/2 : CMD echo "This is v1"
---> Running in e1ada4cd2c31
---> e05dccba3986
Removing intermediate container e1ada4cd2c31
Successfully built e05dccba3986
Successfully tagged hellowold:1
docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
hellowold 1 e05dccba3986 28 seconds ago 103MB
openjdk jdk-alpine 5801f7d008e5 6 months ago 103MB
docker container run hellowold:1
This is v1
# How to tag the image ??
docker image tag hellowold:1 hellowold:latest
docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
hellowold 1 e05dccba3986 3 minutes ago 103MB
hellowold latest e05dccba3986 3 minutes ago 103MB
openjdk jdk-alpine 5801f7d008e5 6 months ago 103MB
docker container run hellowold:latest
This is v1
# Now open Dockerfile and change echo statement
docker image build -t hellowold:2 .
Sending build context to Docker daemon 2.048kB
Step 1/2 : FROM openjdk:jdk-alpine
---> 5801f7d008e5
Step 2/2 : CMD echo "This is v2"
---> Running in f65948a9e30b
---> 204a942b1a38
Removing intermediate container f65948a9e30b
Successfully built 204a942b1a38
Successfully tagged hellowold:2
# This still shows v1
docker container run hellowold
This is v1
docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
hellowold 2 204a942b1a38 About a minute ago 103MB
hellowold 1 e05dccba3986 6 minutes ago 103MB
hellowold latest e05dccba3986 6 minutes ago 103MB
openjdk jdk-alpine 5801f7d008e5 6 months ago 103MB
docker image tag hellowold:2 hellowold:latest
docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
hellowold 2 204a942b1a38 2 minutes ago 103MB
hellowold latest 204a942b1a38 2 minutes ago 103MB
hellowold 1 e05dccba3986 7 minutes ago 103MB
openjdk jdk-alpine 5801f7d008e5 6 months ago 103MB
[dc-user@ech-10-157-136-3 helloworld]$ docker container run hellowold
This is v2
docker image tag hellowold:2 prateekashtikar/hellowold:latest
docker login
Login with your Docker ID to push and pull images from Docker Hub. If you don't have a Docker ID, head over to https://hub.docker.com to create one.
Username: prateek512
Password:
Login Succeeded
docker run -d -p 5000:5000 --restart always --name registry registry:2.6.0
Unable to find image 'registry:2.6.0' locally
2.6.0: Pulling from library/registry
709515475419: Pull complete
df6e278d8f96: Pull complete
16218e264e88: Pull complete
16748da81f63: Pull complete
8d73e673c34c: Pull complete
Digest: sha256:28be0609f90ef53e86e1872a11d672434ce1361711760cf1fe059efd222f8d37
Status: Downloaded newer image for registry:2.6.0
a24c2575c60d1556740ac5bba9bb201ef315afa3b79c120ec0b53ddb1b906257
docker image tag hellowold:latest localhost:5000/prateeashtikar/helloworld:latest
docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
prateekashtikar/hellowold latest 204a942b1a38 31 minutes ago 103MB
localhost:5000/prateeashtikar/helloworld latest 204a942b1a38 31 minutes ago 103MB
hellowold 2 204a942b1a38 31 minutes ago 103MB
hellowold latest 204a942b1a38 31 minutes ago 103MB
hellowold 1 e05dccba3986 37 minutes ago 103MB
openjdk jdk-alpine 5801f7d008e5 6 months ago 103MB
registry 2.6.0 047218491f8c 23 months ago 33.2MB
docker image push localhost:5000/prateeashtikar/helloworld:latest
The push refers to a repository [localhost:5000/prateeashtikar/helloworld]
93351e248e6e: Pushed
298c3bb2664f: Pushed
73046094a9b8: Pushed
latest: digest: sha256:20d4e51eee3be4afea1a83867194b2728b5efd538bbbea66fc86b97d3c382a1e size: 947
docker run -d -p 5000:5000 --restart always --name regsitry registry:2.6.0
Unable to find image 'registry:2.6.0' locally
2.6.0: Pulling from library/registry
709515475419: Pull complete
df6e278d8f96: Pull complete
16218e264e88: Pull complete
16748da81f63: Pull complete
8d73e673c34c: Pull complete
Digest: sha256:28be0609f90ef53e86e1872a11d672434ce1361711760cf1fe059efd222f8d37
Status: Downloaded newer image for registry:2.6.0
863df0930b73beb2674138a6e8413fdb2ef3596a6cbc335815aaa1e40955cd39
Now, push image to local registry tag image here
docker image push localhost:5000/prateek512/helloworld
The push refers to repository [localhost:5000/prateek512/helloworld]
4b7d93055d87: Pushed
663e8522d78b: Pushed
283fb404ea94: Pushed
bebe7ce6215a: Pushed
latest: digest: sha256:f15b6bc7cf40b72c6c6602d56f5de05fd093e0e282da151b95e02fd5b03ff46b size: 1150
DockerCompose File
more docker-compose.yml
version: '3'
services:
web:
image: jboss/wildfly
volumes:
- ~/deployments:/opt/jboss/wildfly/standalone/deployments
ports:
- 8080:8080
docker-compose up -d
WARNING: The Docker Engine you're using is running in swarm mode.
Compose does not use swarm mode to deploy services to multiple nodes in a swarm. All containers will be scheduled on the current node.
To deploy your application across the swarm, use `docker stack deploy`.
Creating network "helloweb_default" with the default driver
Pulling web (jboss/wildfly:)...
latest: Pulling from jboss/wildfly
aeb7866da422: Pull complete
157601a0b538: Pull complete
642f4164f381: Pull complete
bda512e97517: Pull complete
4cccaafdae21: Pull complete
Creating helloweb_web_1_31dfdbdebfc3 ... done
docker-compose ps
Name Command State Ports
---------------------------------------------------------------------------------------------
helloweb_web_1_a8145979996b /opt/jboss/wildfly/bin/sta ... Up 0.0.0.0:8080->8080/tcp
Multicontainer application application with Docker Compose
[dc-user@XX-XX136-96 couchbase-javaee]$ docker-compose up -d Starting couchbase-javaee_db_1_af00006ea3b2 ... done Creating couchbase-javaee_web_1_78e3fe7b208b ... done
docker container logs couchbase-javaee_db_1_af00006ea3b2
docker container logs couchbase-javaee_web_1_a59a012c77a7
curl http://localhost:8080/airlines/resources/airline
[{"travel-sample":{"country":"United States","iata":"Q5","callsign":"MILE-AIR","name":"40-Mile Air","icao":"MLA","id":10,"type":"airline"}}, {"travel-sample":{"country":"United States","iata":"TQ","callsign":"TXW","name":"Texas Wings","icao":"TXW","id":10123,"type":"airline"}}, {"travel-sample":{"country":"United States","iata":"A1","callsign":"atifly","name":"Atifly","icao":"A1F","id":10226,"type":"airline"}}, {"travel-sample":{"country":"United Kingdom","iata":null,"callsign":null,"name":"Jc royal.britannica","icao":"JRB","id":10642,"type":"airline"}}, {"travel-sample":{"country":"United States","iata":"ZQ","callsign":"LOCAIR","name":"Locair","icao":"LOC","id":10748,"type":"airline"}}, {"travel-sample":{"country":"United States","iata":"K5","callsign":"SASQUATCH","name":"SeaPort Airlines","icao":"SQH","id":10765,"type":"airline"}}, {"travel-sample":{"country":"United States","iata":"KO","callsign":"ACE AIR","name":"Alaska Central Express","icao":"AER","id":109,"type":"airline"}}, {"travel-sample":{"country":"United Kingdom","iata":"5W","callsign":"FLYSTAR","name":"Astraeus","icao":"AEU","id":112,"type":"airline"}}, {"travel-sample":{"country":"France","iata":"UU","callsign":"REUNION","name":"Air Austral","icao":"REU","id":1191,"type":"airline"}}, {"travel-sample":{"country":"France","iata":"A5","callsign":"AIRLINAIR","name":"Airlinair","icao":"RLA","id":1203,"type":"airline"}}][dc-user@ech-10-157-136-96 couchbase-javaee]$
docker-compose down
Stopping couchbase-javaee_web_1_a59a012c77a7 ... done
Stopping couchbase-javaee_db_1_af00006ea3b2 ... done
Removing couchbase-javaee_web_1_a59a012c77a7 ... done
Removing couchbase-javaee_db_1_af00006ea3b2 ... done
Removing network couchbase-javaee_default
docker service create --name psight1 -p 8080:8080 --replicas 5 nigelpoulton/pluralsight-docker-ci
docker service ls ID NAME MODE REPLICAS IMAGE PORTS kydlawzlf51g psight1 replicated 0/5 nigelpoulton/pluralsight-docker-ci:latest *:8080->8080/tcp
docker service ps psight1 ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS 121uesfz4som psight1.1 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-142-146 Running Running 19 seconds ago x0xb9ycd7crh psight1.2 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-141-181 Running Running 18 seconds ago usyi8c3n4ddk psight1.3 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-141-180 Running Running 25 seconds ago espp16g8nuyb psight1.4 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-142-141 Running Running 17 seconds ago rz5f3iy8b9k4 psight1.5 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-142-142 Running Running 26 seconds ago
docker service ls ID NAME MODE REPLICAS IMAGE PORTS kydlawzlf51g psight1 replicated 5/5 nigelpoulton/pluralsight-docker-ci:latest *:8080->8080/tcp
docker service inspect psight1 [ { "ID": "kydlawzlf51gifyjhfbhzb05y", "Version": { "Index": 57 }, "CreatedAt": "2019-02-15T12:37:22.132539114Z", "UpdatedAt": "2019-02-15T12:37:22.138771766Z", "Spec": { "Name": "psight1", "Labels": {}, "TaskTemplate": { "ContainerSpec": { "Image": "nigelpoulton/pluralsight-docker-ci:latest@sha256:7a6b0125fe7893e70dc63b2c42ad779e5866c6d2779ceb9b12a28e2c38bd8d3d", "StopGracePeriod": 10000000000, "DNSConfig": {} }, "Resources": { "Limits": {}, "Reservations": {} }, "RestartPolicy": { "Condition": "any", "Delay": 5000000000, "MaxAttempts": 0 }, "Placement": {}, "ForceUpdate": 0 }, "Mode": { "Replicated": { "Replicas": 5 } }, "UpdateConfig": { "Parallelism": 1, "FailureAction": "pause", "Monitor": 5000000000, "MaxFailureRatio": 0, "Order": "stop-first" }, "RollbackConfig": { "Parallelism": 1, "FailureAction": "pause", "Monitor": 5000000000, "MaxFailureRatio": 0, "Order": "stop-first" }, "EndpointSpec": { "Mode": "vip", "Ports": [ { "Protocol": "tcp", "TargetPort": 8080, "PublishedPort": 8080, "PublishMode": "ingress" } ] } }, "Endpoint": { "Spec": { "Mode": "vip", "Ports": [ { "Protocol": "tcp", "TargetPort": 8080, "PublishedPort": 8080, "PublishMode": "ingress" } ] }, "Ports": [ { "Protocol": "tcp", "TargetPort": 8080, "PublishedPort": 8080, "PublishMode": "ingress" } ], "VirtualIPs": [ { "NetworkID": "oyr5bg4il7ffp9o5wsgd9xkih", "Addr": "10.255.0.10/16" } ] } } ]
Scaling Services
[dc-user@ech-10-168-141-180 ~]$ hostname ech-10-168-141-180 [dc-user@ech-10-168-141-180 ~]$ docker service ls ID NAME MODE REPLICAS IMAGE PORTS kydlawzlf51g psight1 replicated 5/5 nigelpoulton/pluralsight-docker-ci:latest *:8080->8080/tcp [dc-user@ech-10-168-141-180 ~]$ docker node ls ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS 52yz7a5yacadmqmo1fb45boo4 * ech-10-168-141-180 Ready Active Reachable 693kalkbw33z1a2yhw7vk684c ech-10-168-142-141 Ready Active Reachable cgomcfmw6k2tf0lgyu6etvbbt ech-10-168-142-146 Ready Active hztbbi9zhxlfjadqihpf2co5g ech-10-168-141-181 Ready Active Leader mpe68mqqgfr0hcrth0onihms3 ech-10-168-142-136 Down Active t2tqsueo6rc5u7d84kph0jf7d ech-10-168-142-136 Ready Active v4bhbbl92htkanang95dvn8mj ech-10-168-142-142 Down Active vnv8hyeg4vgh2eera32rylvu7 ech-10-168-142-142 Ready Active [dc-user@ech-10-168-141-180 ~]$ docker node ls ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS 52yz7a5yacadmqmo1fb45boo4 * ech-10-168-141-180 Ready Active Reachable 693kalkbw33z1a2yhw7vk684c ech-10-168-142-141 Ready Active Reachable cgomcfmw6k2tf0lgyu6etvbbt ech-10-168-142-146 Ready Active hztbbi9zhxlfjadqihpf2co5g ech-10-168-141-181 Ready Active Leader mpe68mqqgfr0hcrth0onihms3 ech-10-168-142-136 Down Active t2tqsueo6rc5u7d84kph0jf7d ech-10-168-142-136 Ready Active v4bhbbl92htkanang95dvn8mj ech-10-168-142-142 Down Active vnv8hyeg4vgh2eera32rylvu7 ech-10-168-142-142 Ready Active [dc-user@ech-10-168-141-180 ~]$ [dc-user@ech-10-168-141-180 ~]$ docker service ps psight1 ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS 121uesfz4som psight1.1 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-142-146 Running Running 14 minutes ago x0xb9ycd7crh psight1.2 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-141-181 Running Running 14 minutes ago usyi8c3n4ddk psight1.3 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-141-180 Running Running 14 minutes ago t5xd0yqj504d psight1.4 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-142-136 Running Preparing 33 seconds ago espp16g8nuyb _ psight1.4 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-142-141 Shutdown Running 44 seconds ago rz5f3iy8b9k4 psight1.5 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-142-142 Running Running 14 minutes ago [dc-user@ech-10-168-141-180 ~]$ [dc-user@ech-10-168-141-180 ~]$ docker service scale psight1=7 psight1 scaled to 7 [dc-user@ech-10-168-141-180 ~]$ [dc-user@ech-10-168-141-180 ~]$ [dc-user@ech-10-168-141-180 ~]$ docker service ls ID NAME MODE REPLICAS IMAGE PORTS kydlawzlf51g psight1 replicated 7/7 nigelpoulton/pluralsight-docker-ci:latest *:8080->8080/tcp [dc-user@ech-10-168-141-180 ~]$ [dc-user@ech-10-168-141-180 ~]$ docker service ps psight1 ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS 121uesfz4som psight1.1 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-142-146 Running Running 15 minutes ago x0xb9ycd7crh psight1.2 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-141-181 Running Running 15 minutes ago usyi8c3n4ddk psight1.3 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-141-180 Running Running 15 minutes ago t5xd0yqj504d psight1.4 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-142-136 Running Running 24 seconds ago espp16g8nuyb _ psight1.4 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-142-141 Shutdown Running about a minute ago rz5f3iy8b9k4 psight1.5 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-142-142 Running Running 15 minutes ago sgc0tqxv4imc psight1.6 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-142-142 Running Running 19 seconds ago i2pthajjxwg8 psight1.7 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-142-136 Running Running 19 seconds ago [dc-user@ech-10-168-141-180 ~]$ [dc-user@ech-10-168-141-180 ~]$ [dc-user@ech-10-168-141-180 ~]$ docker service update --replicas 10 psight1 psight1 Since --detach=false was not specified, tasks will be updated in the background. In a future release, --detach=false will become the default. [dc-user@ech-10-168-141-180 ~]$ [dc-user@ech-10-168-141-180 ~]$ [dc-user@ech-10-168-141-180 ~]$ docker service ps psight1 ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS 121uesfz4som psight1.1 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-142-146 Running Running 16 minutes ago x0xb9ycd7crh psight1.2 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-141-181 Running Running 16 minutes ago usyi8c3n4ddk psight1.3 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-141-180 Running Running 17 minutes ago t5xd0yqj504d psight1.4 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-142-136 Running Running 2 minutes ago espp16g8nuyb _ psight1.4 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-142-141 Shutdown Running 3 minutes ago rz5f3iy8b9k4 psight1.5 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-142-142 Running Running 17 minutes ago sgc0tqxv4imc psight1.6 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-142-142 Running Running 2 minutes ago i2pthajjxwg8 psight1.7 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-142-136 Running Running 2 minutes ago 7q2owjhh398u psight1.8 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-141-181 Running Running 18 seconds ago 4fqwzcnlf2a6 psight1.9 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-142-146 Running Running 17 seconds ago kuxjt11vw8qw psight1.10 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-141-180 Running Running 18 seconds ago [dc-user@ech-10-168-141-180 ~]$ [dc-user@ech-10-168-141-180 ~]$ [dc-user@ech-10-168-141-180 ~]$ docker node ps
docker node ps ech-10-168-141-181 ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS x0xb9ycd7crh psight1.2 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-141-181 Running Running 22 minutes ago 7q2owjhh398u psight1.8 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-141-181 Running Running 5 minutes ago
docker node ps ech-10-168-141-180 ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS usyi8c3n4ddk psight1.3 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-141-180 Running Running 22 minutes ago kuxjt11vw8qw psight1.10 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-141-180 Running Running 5 minutes ago
docker node ps ech-10-168-142-141 ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS espp16g8nuyb psight1.4 nigelpoulton/pluralsight-docker-ci:latest ech-10-168-142-141 Shutdown Shutdown 9 seconds ago
================================
Rolling Updates
docker service rm psight1 psight1
docker service ls ID NAME MODE REPLICAS IMAGE PORTS
docker node ps self ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS
docker network create -d overlay ps-net sq73dnf7n39vdc3ugald2ax3r
docker network ls NETWORK ID NAME DRIVER SCOPE e608a71ddeeb bridge bridge local 23c1d21b2e9c docker_gwbridge bridge local cdf2e62286be host host local oyr5bg4il7ff ingress overlay swarm 3c8ac3ebedb2 none null local sq73dnf7n39v ps-net overlay swarm
docker service create --name psight2 --network ps-net -p 80:80 --replicas 12 nigelpoulton/tu-demo:v1 jc0seeuq188kxsiqdeewlgbtz Since --detach=false was not specified, tasks will be created in the background. In a future release, --detach=false will become the default.
docker service ls ID NAME MODE REPLICAS IMAGE PORTS jc0seeuq188k psight2 replicated 0/12 nigelpoulton/tu-demo:v1 *:80->80/tcp
docker service ps psight2 ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS icz22n7bl1wb psight2.1 nigelpoulton/tu-demo:v1 ech-10-168-142-136 Running Preparing 45 seconds ago jrdq9e6tv7i4 psight2.2 nigelpoulton/tu-demo:v1 ech-10-168-142-136 Running Preparing 45 seconds ago rcxm88l0j7mt psight2.3 nigelpoulton/tu-demo:v1 ech-10-168-142-146 Running Preparing 46 seconds ago cbwp0ifpg88w psight2.4 nigelpoulton/tu-demo:v1 ech-10-168-142-141 Running Preparing 45 seconds ago l8spd7nekiiz psight2.5 nigelpoulton/tu-demo:v1 ech-10-168-142-142 Running Preparing 45 seconds ago z65bvmwinqbe psight2.6 nigelpoulton/tu-demo:v1 ech-10-168-141-181 Running Preparing 46 seconds ago mwgy4gh87zhi psight2.7 nigelpoulton/tu-demo:v1 ech-10-168-142-146 Running Preparing 46 seconds ago j1ped1nr8o0j psight2.8 nigelpoulton/tu-demo:v1 ech-10-168-141-181 Running Preparing 46 seconds ago lyb919uethwi psight2.9 nigelpoulton/tu-demo:v1 ech-10-168-142-141 Running Preparing 45 seconds ago v8ns148xxats psight2.10 nigelpoulton/tu-demo:v1 ech-10-168-142-142 Running Preparing 45 seconds ago lzkp4cdcjymf psight2.11 nigelpoulton/tu-demo:v1 ech-10-168-141-180 Running Preparing 46 seconds ago y3sg0pd7lqyd psight2.12 nigelpoulton/tu-demo:v1 ech-10-168-141-180 Running Preparing 46 seconds ago
docker node ls ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS 52yz7a5yacadmqmo1fb45boo4 * ech-10-168-141-180 Ready Active Leader 693kalkbw33z1a2yhw7vk684c ech-10-168-142-141 Ready Active Reachable cgomcfmw6k2tf0lgyu6etvbbt ech-10-168-142-146 Ready Active hztbbi9zhxlfjadqihpf2co5g ech-10-168-141-181 Ready Active Reachable mpe68mqqgfr0hcrth0onihms3 ech-10-168-142-136 Down Active t2tqsueo6rc5u7d84kph0jf7d ech-10-168-142-136 Ready Active v4bhbbl92htkanang95dvn8mj ech-10-168-142-142 Down Active vnv8hyeg4vgh2eera32rylvu7 ech-10-168-142-142 Ready Active
docker service inspect --pretty psight2
ID: jc0seeuq188kxsiqdeewlgbtz Name: psight2 Service Mode: Replicated Replicas: 12 Placement: UpdateConfig: Parallelism: 1 On failure: pause Monitoring Period: 5s Max failure ratio: 0 Update order: stop-first RollbackConfig: Parallelism: 1 On failure: pause Monitoring Period: 5s Max failure ratio: 0 Rollback order: stop-first ContainerSpec: Image: nigelpoulton/tu-demo:v1@sha256:9ccc0c67e5c5eaae4bebeeed9b22e0e22f8a35624c1d5c80f2c9623cbcc9b59a Resources: Networks: ps-net Endpoint Mode: vip Ports: PublishedPort = 80 Protocol = tcp TargetPort = 80 PublishMode = ingress
docker service update --image nigelpoulton/tu-demo:v2 --update-parallelism 2 --update-delay 10s psight2 psight2 Since --detach=false was not specified, tasks will be updated in the background. In a future release, --detach=false will become the default.
docker service ps psight2 ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS z16mvojy3wcs psight2.1 nigelpoulton/tu-demo:v2 ech-10-168-142-141 Running Running 4 seconds ago icz22n7bl1wb _ psight2.1 nigelpoulton/tu-demo:v1 ech-10-168-142-136 Shutdown Shutdown 4 seconds ago jrdq9e6tv7i4 psight2.2 nigelpoulton/tu-demo:v1 ech-10-168-142-136 Running Running 7 minutes ago rcxm88l0j7mt psight2.3 nigelpoulton/tu-demo:v1 ech-10-168-142-146 Running Running 7 minutes ago jjbdi3d34o8m psight2.4 nigelpoulton/tu-demo:v2 ech-10-168-142-136 Running Running 4 seconds ago cbwp0ifpg88w _ psight2.4 nigelpoulton/tu-demo:v1 ech-10-168-142-141 Shutdown Shutdown 4 seconds ago l8spd7nekiiz psight2.5 nigelpoulton/tu-demo:v1 ech-10-168-142-142 Running Running 7 minutes ago z65bvmwinqbe psight2.6 nigelpoulton/tu-demo:v1 ech-10-168-141-181 Running Running 6 minutes ago mwgy4gh87zhi psight2.7 nigelpoulton/tu-demo:v1 ech-10-168-142-146 Running Running 7 minutes ago j1ped1nr8o0j psight2.8 nigelpoulton/tu-demo:v1 ech-10-168-141-181 Running Running 6 minutes ago lyb919uethwi psight2.9 nigelpoulton/tu-demo:v1 ech-10-168-142-141 Running Running 7 minutes ago v8ns148xxats psight2.10 nigelpoulton/tu-demo:v1 ech-10-168-142-142 Running Running 7 minutes ago lzkp4cdcjymf psight2.11 nigelpoulton/tu-demo:v1 ech-10-168-141-180 Running Running 7 minutes ago y3sg0pd7lqyd psight2.12 nigelpoulton/tu-demo:v1 ech-10-168-141-180 Running Running 7 minutes ago
docker service ps psight2 | grep :v2 z16mvojy3wcs psight2.1 nigelpoulton/tu-demo:v2 ech-10-168-142-141 Running Running 3 minutes ago 5qkkut81mrzz psight2.2 nigelpoulton/tu-demo:v2 ech-10-168-142-136 Running Running 3 minutes ago zhm5l0h42wzt psight2.3 nigelpoulton/tu-demo:v2 ech-10-168-142-146 Running Running 2 minutes ago jjbdi3d34o8m psight2.4 nigelpoulton/tu-demo:v2 ech-10-168-142-136 Running Running 3 minutes ago a03kbwi4y5c8 psight2.5 nigelpoulton/tu-demo:v2 ech-10-168-142-142 Running Running 2 minutes ago kczlp0ucr5xu psight2.6 nigelpoulton/tu-demo:v2 ech-10-168-141-181 Running Running about a minute ago v18lel3akntg psight2.7 nigelpoulton/tu-demo:v2 ech-10-168-142-146 Running Running 2 minutes ago y1dgzzuu1lbu psight2.8 nigelpoulton/tu-demo:v2 ech-10-168-141-181 Running Running 3 minutes ago msvtydso1hxm psight2.9 nigelpoulton/tu-demo:v2 ech-10-168-142-141 Running Running about a minute ago 6cidq28xy62y psight2.10 nigelpoulton/tu-demo:v2 ech-10-168-142-142 Running Running about a minute ago r9ntv9ytvvcs psight2.11 nigelpoulton/tu-demo:v2 ech-10-168-141-180 Running Running 2 minutes ago ko3ncl2tfxvl psight2.12 nigelpoulton/tu-demo:v2 ech-10-168-141-180 Running Running about a minute ago
docker service inspect --pretty psight2
ID: jc0seeuq188kxsiqdeewlgbtz Name: psight2 Service Mode: Replicated Replicas: 12 UpdateStatus: State: completed Started: 4 minutes Completed: 2 minutes Message: update completed Placement: UpdateConfig: Parallelism: 2 Delay: 10s On failure: pause Monitoring Period: 5s Max failure ratio: 0 Update order: stop-first RollbackConfig: Parallelism: 1 On failure: pause Monitoring Period: 5s Max failure ratio: 0 Rollback order: stop-first ContainerSpec: Image: nigelpoulton/tu-demo:v2@sha256:d3c0d8c9d5719d31b79cca146025fa7d1de4749fef58a7e038cf0ef2ba5eb74c Resources: Networks: ps-net Endpoint Mode: vip Ports: PublishedPort = 80 Protocol = tcp TargetPort = 80 PublishMode = ingress
====================
Stacks and Bundles