Improve leafcloud CI support (#374)

* use proper leafcloud jumphost user

* use cheaper leafcloud flavor

* add leafcloud packer vars file

Author: sjpb

environments/.stackhpc/LEAFCLOUD.pkrvars.hcl

@@ -0,0 +1,11 @@
+flavor = "en1.xsmall"
+use_blockstorage_volume = true
+volume_size = 12 # GB. Compatible with SMS-lab's general.v1.tiny 
+image_disk_format = "qcow2"
+networks = ["909e49e8-6911-473a-bf88-0495ca63853c"] # slurmapp-ci
+source_image_name = "openhpc-230804-1754-80b8d714" # https://github.com/stackhpc/ansible-slurm-appliance/pull/298
+fatimage_source_image_name = "Rocky-8-GenericCloud-Base-8.9-20231119.0.x86_64.qcow2"
+ssh_keypair_name = "slurm-app-ci"
+ssh_private_key_file = "~/.ssh/id_ed25519"
+security_groups = ["default", "SSH"]
+floating_ip_network = "external"

environments/.stackhpc/inventory/group_vars/all/bastion.yml

@@ -4,7 +4,7 @@ bastion_config:
     user: slurm-app-ci
     ip: 128.232.222.183
   LEAFCLOUD:
-    user: rocky
+    user: slurm-app-ci
     ip: 195.114.30.222
 # NB: The bastion_{user,ip} variables are used directly in the CI workflow too
 bastion_user: "{{ bastion_config[ci_cloud].user }}"

environments/.stackhpc/terraform/LEAFCLOUD.tfvars

@@ -1,6 +1,6 @@
 cluster_net = "slurmapp-ci"
 cluster_subnet = "slurmapp-ci"
 control_node_flavor = "ec1.medium" # small ran out of memory, medium gets down to ~100Mi mem free on deployment
-other_node_flavor = "ec1.small"
+other_node_flavor = "en1.xsmall"
 state_volume_type = "unencrypted"
 home_volume_type = "unencrypted"