Answer by zaneb for I'd like to pass string type value read from environment file as an argument to runcmd in OS::Heat::CloudConfig. Below is parameter definition. oam_stat_routes: type: string label: oam_stat_routes description: List of static route destination on OAM side in CIDR notation. Below is the CloudConfig definition with runcmd. What I want to do is to pass the value of oam_stat_routes to shell script command /usr/local/bin/set_route as an argument. Wonder if this is possible. dns_network: type: OS::Heat::CloudConfig properties: cloud_config: runcmd: - /usr/local/bin/set_route oam_stat_routes

Easy: dns_network: type: OS::Heat::CloudConfig properties: cloud_config: runcmd: - str_replace: template: /usr/local/bin/set_route %oam_stat_routes% parameters: "%oam_stat_routes%": {get_param: oam_stat_routes}