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cloud:aws:servicediscovery [2023/11/01 07:13] – removed - external edit (Unknown date) 127.0.0.1cloud:aws:servicediscovery [2023/11/01 07:13] (current) – ↷ Page moved from business_process_management:camunda:cloud:aws:servicediscovery to cloud:aws:servicediscovery skipidar
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 +==== Service Discovery ====
 +
 +
 +Examples
 +
 +Add service
 +<sxh shell>
 +#/bin/bash -e
 +
 +#stop on error
 +#set -e
 +
 +
 +
 +######## ARGUMENTS
 +
 +
 +# retrieve the ec2 instance ID: i-0d39e398760299ce0
 +instanceId=${1?Pass the ec2 instance ID.}
 +
 +# retrieve the private ip of the instance: 10.142.251.149
 +instancePrivateIp=${2?Pass the private ipv4 of the instance.}
 +
 +# retrieve name of the building: zurich-klinik
 +buildingName=${3?Pass the name of the building, to be used in the service url.}
 +
 +# retrieve the vpc id: vpc-00aeb2af06257ebf8
 +vpcid=${4?Pass the vpc id.}
 +
 +
 +
 +
 +
 +
 +
 +
 +########## SCRIPT START 
 +
 +dnsnamespace="navvis.local"
 +servicename="${buildingName}.renderer"
 +
 +
 +
 +
 +aws servicediscovery create-private-dns-namespace --name $dnsnamespace --vpc $vpcid
 +
 +# retrieve the namespace id
 +namespaceId=$(aws servicediscovery list-namespaces --query "\"Namespaces\"[?Name==\`$dnsnamespace\`].Id" --output text)
 +echo "NameSpaceId: $namespaceId"
 +
 +
 +# ignore errors, when service already exists
 +aws servicediscovery create-service --name $servicename \
 + --dns-config "NamespaceId=$namespaceId,RoutingPolicy=WEIGHTED,DnsRecords=[{Type=A,TTL=10}]" 2> /dev/null
 +
 +
 +# retrieve the service id
 +serviceId=$(aws servicediscovery list-services --query "\"Services\"[?Name==\`$servicename\`].Id" --output text)
 +echo "ServiceId: $serviceId"
 +
 +
 +aws servicediscovery register-instance --service-id $serviceId \
 +--instance-id $instanceId  --attributes "AWS_INSTANCE_IPV4=$instancePrivateIp"
 +
 +
 +# ping the service
 +echo -e "Service available under '$servicename.$dnsnamespace'"
 +
 +</sxh>
 +
 +
 +
 +
 +Remove service
 +
 +
 +
 +
 +<sxh shell>
 +#/bin/bash -e
 +
 +# Removes the services and the namespace, if no instances are available in the service anymore
 +
 +
 +#stop on error
 +#set -e
 +
 +
 +######## ARGUMENTS
 +
 +
 +# retrieve the building ID: zurich-klinik
 +buildingName=${1?Pass in the building id.}
 +
 +
 +
 +
 +
 +
 +########## SCRIPT START 
 +
 +
 +dnsnamespace="navvis.local"
 +servicename="${buildingName}.renderer"
 +
 +
 +
 +# get the instance id by service
 +serviceId=$(aws servicediscovery list-services --query "\"Services\"[?Name==\`$servicename\`].Id" --output text) 2> /dev/null
 +echo "ServiceId: $serviceId"
 +
 +# get the instace id by service
 +instanceId=$(aws servicediscovery list-instances --service-id $serviceId --query "\"Instances\"[0].Id" --output text)  2> /dev/null
 +echo "InstanceId: $instanceId"
 +
 +# retrieve the namespace id
 +namespaceId=$(aws servicediscovery list-namespaces --query "\"Namespaces\"[?Name==\`$dnsnamespace\`].Id" --output text)  2> /dev/null
 +echo "NameSpaceId: $namespaceId"
 +
 +# deregister the instance
 +aws servicediscovery deregister-instance --service-id $serviceId --instance-id $instanceId  2> /dev/null
 +
 +# deregister the service, will only work if no instances are left
 +aws servicediscovery delete-service --id $serviceId  2> /dev/null
 +
 +# deregister the namespace, will only work if no services
 +aws servicediscovery delete-namespace --id $namespaceId  2> /dev/null
 +
 +
 +
 +# ping the service
 +echo -e "Removed service '$servicename.$dnsnamespace'"
 +
 +</sxh>