Service
A service is a mapping to a resource in somewhere, a mysql database, a nfs share in your private network, or elasticsearch in AWS, or a web app in Azure, or redis in Google.
A service binds to a network. When you create a service, service gets a virtual ip from service ip range CIDR that is defined in network definition. Whenever service is not deleted, assigned ip is same.
Fields
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Name
Give a name, and names must include domain valid characters [a-z][A-Z][0-9][-] like test-map or mysql-dev
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Host
Target resource ip or hostname like 1.1.1.1 or private network ip 192.168.1.10
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Tcp port or Udp Port or both of them
Target resource port like if mysql is working 3306, or ssh server is working on 22, - Alias
This is useful for already used dns resolution, suppose if you have already resolving dev.mysql.server to an ip , with this feature you can resolve to this service.
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Binded network
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Assigned ip
Until delete this service, this service will use the same assigned ip in your virtual network, you can ping this ip after you connected network over tunnel