I want to know where I can check the account and password of ZAC, as I seem to have forgotten them. '-u admin -p admin' doesn't seem to be correct.
I am getting a connection refused error when accessing https://caoduyet.centralindia.cloudapp.azure.com:8443 and can only access https://caoduyet.centralindia.cloudapp.azure.com:8441/zac/.
You will need access to the ziti controller to reset the administrator password.
If those don't work because you have no way to authenticate with the CLI you can STOP the running controller, insert a new admin record, then START the controller again.
sudo ziti ops db add-debug-admin /path/to/ziti/bbolt.db admin2 mynewzitipw
sorry but i haven't done that step yet, i'm just not able to access https://caoduyet.centralindia.cloudapp.azure.com:8443, in the step named "Login and use ZAC" in Ziti Admin Console | OpenZiti. i'm confused because when i install ExpressInstall Host Openziti Anywhere, i don't see any suggestion to port 8443 in env. Hope you can help me
It sounds to me like your newly on your OpenZiti journey. You can certainly just choose to remove the installed network and start over if you want, that's always an option. I think there's two better options though.
If you lost your password, Ken has shown you how to change it, but you MUST ssh to the controller and have write access to the OpenZiti controller database file. The command shown will reset the password to whatever you want.
Finally, since the quickstarts are meant for leaning, during the express install phase all your important settings were saved into a file, including the password. If you ssh back to the controller, you can find your password in the .env file the quick start left behind. Look in $HOME/.ziti/quickstart/$(hostname)/$(hostname).env. in there, find your password by finding the ZITI_PWD variable.