Docker-CE: Get Started Tutorial – processes / files / HTTP headers

Inside my docker installation on ubuntu server i performed the official docker tutorial part 2: "containers"

Ok. Not really interesting, because the tutorial describes all steps very well (except the point, that you have to install python3-pip and you have to run pip3 and not pip).

Here the interesting part:

After i started the container ("docker run -p 4000:80 friendlyhello") i got the following:
root@ubuntuserver:/var/lib/docker/image# docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS                  (more...)

Docker-CE: initial configuration

After installing docker to a ubuntu server i was keen what kind of processes and files are there.
# ps x|grep docker
 5852 ?        Ssl    0:05 /usr/bin/dockerd -H fd://
 5867 ?        Ssl    0:04 docker-containerd --config /var/run/docker/containerd/containerd.toml
So the inital configuration is not stored in /etc.

The configuration file looks like this:
# cat /var/run/docker/containerd/containerd.toml
root = "/var/lib/docker/containerd/daemon"
state = "/var/run/docker/containerd/daemon"
subreaper = false
oom_score = -500

[grpc]
  address = "/var/run/docker/containerd/docker-containerd.sock"
  (more...)

Oracle SOA Suite 12c: database configuration

After the running the rcu i was keen what was created inside the database. The installation showed some additional tablespaces:
select tablespace_name from dba_tablespaces; 
TABLESPACE_NAME              
------------------------------
SYSTEM
SYSAUX
UNDOTBS1
TEMP
USERS
DEV_SOAINFRA
DEV_IAS_TEMP
DEV_STB
DEV_IAS_UMS
DEV_WLS
DEV_MDS
DEV_IAS_OPSS
DEV_IAU

13 Zeilen gewählt.
Ok. Not really exciting.
But the list of the created tables was quite impressing:
select OWNER,TABLE_NAME from all_tables where owner like 'DEV%';

OWNER                TABLE_NAME                             
-------------------- ----------------------------------------
DEV_MDS              MDS_PURGE_PATHS                        
DEV_SOAINFRA         AQ$_IP_QTAB_G                          
DEV_SOAINFRA         AQ$_EDN_EVENT_QUEUE_TABLE_G            
DEV_SOAINFRA         (more...)

Docker-CE on Ubuntu 17.10 (Artful Aardvark)

Today docker is only added to the repositories up to ubuntu version 17.04:

If you want to run docker on 17.10 you have to perform the following steps:
After that 
# docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
9a0669468bf7: Pull complete
Digest: sha256:cf2f6d004a59f7c18ec89df311cf0f6a1c714ec924eebcbfdd759a669b90e711
Status: (more...)

Oracle SOA Suite 12c: rcu from a remote host / database configuration

First step is to configure the database on your Oracle Linux server which hosts your database:
[root@localhost admin]# firewall-cmd --permanent --zone public --add-port=1521/tcp
success
Then run the rcu:
schroff@zerberus:/home/data/opt/oracle/Middleware/Oracle_Home/oracle_common/bin$ ./rcu

    RCU-Logdatei: /tmp/RCU2017-10-14_22-36_851447466/logs/rcu.log
The startup screen:
 Connect to you database:
 Connection successful:
 Certified database?!
 Choose the SOA Suite components:

 Password definition for all created schemas:
 Variables (take a look here)
 Tablespaces:
 Creation of tablespaces:

 Summary:
 Create schemas:
The end:

Microservices: Ubuntu Core: Building your own snap application

After the installation of ubuntu core and running caddy webserver from a repository  i was wondering how to build my own snap package.

The tutorial shows how to build GNU Hello into a snap packages:
and this tutorial works fine.
But this does not really help, if you have a command, which you can not build with autotools or ant or ....
A complete list can be found here.

So my plan: