Hello, With the help of user data you can push you set of instructions to the VM while deploying VM. So let’s say you want to install any specific packages in the newly deployed VM, So instead of logging to the VM and download it manually you can pass the user-data to the VM while deploying the VM and it will get it done.
There are few prerequisites for user data which can be found in the ACS document, http://docs.cloudstack.apache.org/projects/cloudstack-administration/en/4.8/virtual_machines/user-data.html#:~:text=CloudStack%20provides%20API%20access%20to,encoding%20to%20a%20deployed%20VM.&text=Deployed%20VMs%20also%20have%20access,user%2Ddata%20formated%20in%20base64. <http://docs.cloudstack.apache.org/projects/cloudstack-administration/en/4.8/virtual_machines/user-data.html#:~:text=CloudStack%20provides%20API%20access%20to,encoding%20to%20a%20deployed%20VM.&text=Deployed%20VMs%20also%20have%20access,user%2Ddata%20formated%20in%20base64.> So basically once you have installed Cloud-init and other packages mentioned above In link. Then you need to covert you script/data into base64 format and then send via API command. Let’s a say a script contains - #! /bin/bash echo “Hello CloudStack” >> /tmp/userdata.txt Now convert above text into the base64 format. - You can use you Linux editor or you can use online tool for. https://linuxhint.com/bash_base64_encode_decode/ <https://linuxhint.com/bash_base64_encode_decode/> Or https://www.base64encode.org/ <https://www.base64encode.org/> Now I have tried to convert and it gave me - ‘IyEgL2Jpbi9iYXNoCgplY2hvIOKAnEhlbGxvIENsb3VkU3RhY2vigJ0gPj4gL3RtcC91c2VyZGF0YS50eHQK’, Now just pass the string while deploying you virtual machine. i.e Cloudmonkey deploy virtualmachine name=x, ….., userdata=IyEgL2Jpbi9iYXNoCgplY2hvIOKAnEhlbGxvIENsb3VkU3RhY2vigJ0gPj4gL3RtcC91c2VyZGF0YS50eHQK I hope this will clarify your concern. Vivek Kumar Manager - Cloud & DevOps IndiQus Technologies 24*7 O +91 11 4055 1411 | M +91 7503460090 www.indiqus.com <http://indiqus.com/> This message is intended only for the use of the individual or entity to which it is addressed and may contain information that is confidential and/or privileged. If you are not the intended recipient please delete the original message and any copy of it from your computer system. You are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited unless proper authorization has been obtained for such action. If you have received this communication in error, please notify the sender immediately. Although IndiQus attempts to sweep e-mail and attachments for viruses, it does not guarantee that both are virus-free and accepts no liability for any damage sustained as a result of viruses. > On 02-Sep-2020, at 3:21 PM, Poulpatine <poulpat...@gmail.com> wrote: > > Hi, > > I'm trying to pass userdata in cmk command line during virtual machine > deployment but I can't figure how to do that. > > Among other tests, I've tried something like that in a very basic shell > script: > > #!/bin/bash > > cli=cmk > template=7bf01470-e3a5-4f37-b035-023c663c1b48 > service=80b47022-a341-446f-a14a-128b85a099d0 > zone=530cb1c3-1c90-4055-816e-3b58fbf9de91 > keypair=mykey > userdata="$(sed -E ':a;N;$!ba;s/\r{0,1}\n/\\n/g' user-data)" > > $ cli deploy virtualmachine templateid="$template" > serviceofferingid="$service" zoneid="$zone" keypair="$keypair" > user-data="$userdata" > > But I still can't figure how to make it. > > Do you have any suggestions? > > Many thanks. > > -- > \o/ Poulpatine \o/
