% sudo vm list
Password:
NAME DATASTORE LOADER CPU MEMORY VNC AUTOSTART STATE
debianvm1 default grub 1 512M - No Stopped
% sudo vm start debianvm1
% sudo vm console debianvm1
---- snip ----
Debian GNU/Linux 11 debianvm1 ttyS0
debianvm1 login: dusko
Password:
% sudo \
systemctl \
list-units \
--type=service \
--state=active \
| grep docker
docker-registry.service loaded active running the Docker toolset to
pack, ship, store, and deliver content
docker.service loaded active running Docker Application Container Engine
$ ls -lh /etc/systemd/system/docker.service.d/
total 4.0K
-rw-r--r-- 1 root root 78 Feb 14 20:35 override.conf
$ cat /etc/systemd/system/docker.service.d/override.conf
[Service]
ExecStart=
ExecStart=/usr/bin/dockerd -H fd:// -H tcp://0.0.0.0:2376
$ ss -an | grep 2376
tcp LISTEN 0 4096 *:2376 *:*
$ ip -4 address | grep -inet | grep scope
2: inet 127.0.0.1/8 scope host lo
5: inet 192.168.8.19/24 brd 192.168.8.255 scope global enp0s5
7: inet 192.168.8.18/24 brd 192.168.8.255 scope global secondary dynamic enp0s5
10: inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0
$ ss -an | grep 9000
$ sudo \
docker run -d -p 9000:9000 -v \
/var/run/docker.sock:/var/run/docker.sock -v \
portainer_data:/data portainer/portainer
3d6162208f6ec0a79b1c1956c9958f5bcf4d1d1217572ce1e0bd5769001e1cb6
$ ss -an | grep 9000
tcp LISTEN 0 4096 0.0.0.0:9000 0.0.0.0:*
tcp LISTEN 0 4096 [::]:9000 [::]:*
To exit the console (to drop the connection), press ~ + Ctrl-D at the debianvm1 login: prompt.
$ exit
logout
Debian GNU/Linux 11 debianvm1 ttyS0
debianvm1 login: ~
[EOT]
% ps $$
PID TT STAT TIME COMMAND
24254 5 Ss 0:00.05 -csh (csh)
% printf %s\\n "$SHELL"
/bin/csh
% set DOCKER_HOST="192.168.8.19"
% printf %s\\n "$DOCKER_HOST"
192.168.8.19
% command -V docker
docker is /usr/local/bin/docker
% type docker
docker is /usr/local/bin/docker
% which docker
/usr/local/bin/docker
% whereis docker
docker: /usr/local/bin/docker
% docker -H "tcp://dusko@$DOCKER_HOST":2376 run hello-world
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:
$ docker run -it ubuntu bash
---- snip ----
% docker -H "tcp://dusko@$DOCKER_HOST":2376 images
REPOSITORY TAG IMAGE ID CREATED SIZE
ubuntu latest 54c9d81cbb44 4 weeks ago 72.8MB
hello-world latest feb5d9fea6a5 5 months ago 13.3kB
portainer/portainer latest 580c0e4e98b0 11 months ago 79.1MB
% docker -H "tcp://dusko@$DOCKER_HOST":2376 \
run -d --name kroki -p 8080:8000 yuzutech/kroki
Output:
Unable to find image 'yuzutech/kroki:latest' locally
latest: Pulling from yuzutech/kroki
---- snip ----
Status: Downloaded newer image for yuzutech/kroki:latest
8b79ce7a6de16fc14b6ecf60d973527b0ec6df10be3b9bc7fe3ee890825622b2
Confirm the availability of the new image:
% docker -H "tcp://dusko@$DOCKER_HOST":2376 images
REPOSITORY TAG IMAGE ID CREATED SIZE
ubuntu latest 54c9d81cbb44 4 weeks ago 72.8MB
yuzutech/kroki latest e58ce143c394 2 months ago 528MB
hello-world latest feb5d9fea6a5 5 months ago 13.3kB
portainer/portainer latest 580c0e4e98b0 11 months ago 79.1MB
% netstat -an | grep $DOCKER_HOST
tcp4 0 0 192.168.8.1.57607 192.168.8.19.2376 TIME_WAIT
% nc -z -v $DOCKER_HOST 8080
Connection to 192.168.8.19 8080 port [tcp/http-alt] succeeded!
% lynx --dump "$DOCKER_HOST":8080 | wc -l
2525
With a Web browser open:
http://192.168.8.19:8080/
To test, from a Web browser open:
http://192.168.8.19:8080/plantuml/svg/eNplj0FvwjAMhe_5FVZP40CgaNMuUGkcdttp3Kc0NS
Vq4lRxGNKm_fe1HULuuD37-bOfuXPUm2QChEjRnlIMCDmdUfHNSYY6xh42a9Fsegflk-yYlOLlcHK2I2
SGtX4WZm9sZ1o8uOzxxbuWAlIGj8cshs6M1jDuY2owyU2P8jAezdnn10j53X0hlBsZFW021Pq7HaVSNw
-KN-OogG8F8BAGqT8dXhZjxW4cyJEW6kcC-yHWFagHqW0MfaThhYmaVyE26P_x27qaDmXeruqqAMMw1h
-ZlRI4aF3dX7hOwm5XzfIKDctlNcshPT1tFa8JPYAj-Zf5F065sqM=
The above example obtained from https://kroki.io/, under Examples section.
More examples available from:
https://kroki.io/examples.html
% command -v python
% command -v python3.8
/usr/local/bin/python3.8
This is an example from https://docs.kroki.io/kroki/setup/usage/:
% vi hello.dot
% cat hello.dot
digraph G {
Hello->World
}
% cat hello.dot | \
python3.8 -c \
"import sys; import base64; import zlib; \
print(base64.urlsafe_b64encode(zlib.\
compress(sys.stdin.read().\
encode('utf-8'), 9)).\
decode('ascii'))"
Output:
eNpLyUwvSizIUHBXqOZSUPBIzcnJ17ULzy_KSeGq5QIAjfEJJA==
Copy and paste it into the web browser.
http://192.168.8.19:8080/graphviz/svg/eNpLyUwvSizIUHBXqOZSUPBIzcnJ17ULzy_KSeGq5Q
IAjfEJJA==
The result will be an image in SVG format.
% curl \
http://192.168.8.19:8080/graphviz/svg \
--data-raw \
'digraph G {Hello->World}' > \
hello.svg
% rsvg-convert hello.svg > hello.png
% xv hello.png
References:
https://kroki.io/
https://demo.kroki.io/
https://kroki.io/examples.html
https://docs.kroki.io/kroki/
https://docs.kroki.io/kroki/setup/install/
https://docs.kroki.io/kroki/setup/manual-install/
https://docs.kroki.io/kroki/setup/configuration/
https://github.com/yuzutech/kroki
https://github.com/yuzutech/kroki/tree/main/server
https://docs.kroki.io/kroki/setup/http-clients/
https://docs.kroki.io/kroki/setup/kroki-cli/
https://github.com/yuzutech/kroki/tree/main/server
https://github.com/yuzutech/kroki/releases
https://github.com/httpie