Swarmlab docs

Application development in a distributed system

Development of Distributed Systems from Design to Application


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= FAQ!
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[#How_to_get_the_path_of_current_script0]
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* xref:index.adoc#How_to_get_the_path_of_current_script[How to get the path of current script]
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[#Fix_x509_certificate_signed_by_unknown_authority_issue0]
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* xref:index.adoc#Fix_x509_certificate_signed_by_unknown_authority_issue[How to Fix "x509: certificate signed by unknown authority" issue]
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[#Add_current_user_to_the_docker_group0]
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* xref:index.adoc#Add_current_user_to_the_docker_group[How to Add current user to the docker group]
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[#poc-rocketchat0]
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* xref:index.adoc#poc-rocketchat[How to open Web service rocketchat]
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[#microservice-gns30]
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* xref:index.adoc#microservice-gns3[How to open Web service microservice-gns3]
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[#microservice-mongoexpress0]
* xref:index.adoc#microservice-mongoexpress[How to use Web service microservice-mongoexpress]
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[#poc-jitsimeet0]
* xref:index.adoc#poc-jitsimeet[How to use Web service microservice-jitsimeet]
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[#How_to_get_the_path_of_current_script]
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[.text-right]
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== How to get the path of current script xref:index.adoc#How_to_get_the_path_of_current_script0[image:up-1.png[28,28,float=right]]
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[source,bash]
----
#!/bin/bash
SOURCE="${BASH_SOURCE[0]}"
while [ -h "$SOURCE" ]; do # resolve $SOURCE until the file is no longer a symlink
TARGET="$(readlink "$SOURCE")"
if [[ $TARGET == /* ]]; then
SOURCE="$TARGET"
else
DIR="$( dirname "$SOURCE" )"
SOURCE="$DIR/$TARGET" # if $SOURCE was a relative symlink, we need to resolve it relative to the path where the symlink file was located
fi
done
SRPATH="$( dirname "$SOURCE" )"
SFPATH="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
if [ "$SFPATH" != "$SRPATH" ]; then
RDIR=$SRPATH # relativ path directory
fi
#echo "full path file $SOURCE"
#echo "full path dir $SFPATH"
#echo "relativ path dir $SRPATH"
cwdir=$PWD
wdir=$SFPATH
cd $wdir
echo "current working directory,"
echo $cwdir
echo "dir of running program"
echo $wdir
----
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[#Fix_x509_certificate_signed_by_unknown_authority_issue]
[.text-right]
== How to Fix "x509: certificate signed by unknown authority" issue xref:index.adoc#Fix_x509_certificate_signed_by_unknown_authority_issue0[image:up-1.png[28,28,float=right]]
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run with sudo
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[source,bash]
----
#!/bin/bash
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registry_address=hub.swarmlab.io
registry_port=5443
mkdir -p /etc/docker/certs.d/$registry_address:$registry_port
openssl s_client -showcerts -connect $registry_address:$registry_port < /dev/null | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' > /etc/docker/certs.d/$registry_address:$registry_port/ca.crt
registry_port=5480
mkdir -p /etc/docker/certs.d/$registry_address:$registry_port
openssl s_client -showcerts -connect $registry_address:$registry_port < /dev/null | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' > /etc/docker/certs.d/$registry_address:$registry_port/ca.crt
----
[#Add_current_user_to_the_docker_group]
[.text-right]
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== How to Add current user to the docker group xref:index.adoc#Fix_x509_certificate_signed_by_unknown_authority_issue0[image:up-1.png[28,28,float=right]]
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[source,bash]
----
sudo usermod -aG docker $USER
----
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[#poc-rocketchat]
[.text-right]
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== How to open Web service rocketchat xref:index.adoc#poc-rocketchat0[image:up-1.png[28,28,float=right]]
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[source,bash]
----
Start poc-rocketchat with URL: http://localhost:7030
----
[#microservice-gns3]
[.text-right]
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== How to open Web service microservice-gns3 xref:index.adoc#microservice-gns30[image:up-1.png[28,28,float=right]]
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Find IP:port in:
* Instances->running Containers
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** Actions->[Click here to open the Web_App]
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[source,bash]
----
Start with URL: http://localhost:port
----
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[#microservice-mongoexpress]
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[.text-right]
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== How to open Web service microservice-mongoexpress xref:index.adoc#microservice-gns30[image:up-1.png[28,28,float=right]]
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(1) Start Web4Mongoexress:
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* Instances->running Containers
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** Actions->[Click here to open the Web_App]
NOTE: Ignore the error: "The site could be temporarily unavailable or too busy. Try again in a few moments"
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(2) Attach-network-interface mongoserver:
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* Instances->running Containers
** Actions->Networks [Select network]
TIP: Once attached, you can work with the MongoDB server, managing MongoDB Databases, Collections, and Documents.
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(3) Find mongoserver:
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* Instances->running Containers
** Actions->Connect [Run in terminal]
*** nmap -sP IP/mask or nmap -p- IP/Network
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[TIP]
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====
Start mongoexpress
[source,bash]
----
mongo-express --admin --url mongodb://[IP]:27017
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[IP] = Step (3)
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----
Reload http://localhost:port
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Step (1)
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====
[#poc-jitsimeet]
[.text-right]
== How to open Web service poc-jitsimeet xref:index.adoc#poc-jitsimeet0[image:up-1.png[28,28,float=right]]
Start service:
* Private/Local->Proof_of_concept->poc-jitsimeet
Open Web
* Instances->running Containers
** [jitsiweb]->Actions->Connect [Click here to open the Web_App]
[TIP]
====
Accept self-signed certificate!
self-signed certificates are good to go for testing purposes and for internal LAN-only services.
When you use VENUS
====
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