Merge pull request #1672 from craddm/tmpfs

Use memory for the /tmp directory

deployment/secure_research_environment/cloud_init/cloud-init-srd.mustache.yaml

@@ -592,6 +592,10 @@ runcmd:
   - systemctl enable data.automount
   - systemctl enable output.automount
 
+  # Use tmpfs so tmp is in memory where possible rather than entirely on disk
+  - echo ">=== Configure tmpfs... ===<"
+  - echo "tmpfs /tmp tmpfs rw,nosuid,nodev,noexec" | tee -a /etc/fstab
+
   # List fstab and the volume mount order. Note that blobfuse mounts are not using fstab
   - echo ">=== Checking disk mounts... ===<"
   - grep -v -e '^[[:space:]]*$' /etc/fstab | sed 's|^|  /etc/fstab  |'