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Diffstat (limited to 'content/blog/cfengine')
| -rw-r--r-- | content/blog/cfengine/leveraging-yaml.md | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/content/blog/cfengine/leveraging-yaml.md b/content/blog/cfengine/leveraging-yaml.md index e773325..494a41c 100644 --- a/content/blog/cfengine/leveraging-yaml.md +++ b/content/blog/cfengine/leveraging-yaml.md @@ -17,7 +17,7 @@ The use case bellow lacks a bit or error control with argument validation, it wi In `cmdb/hosts/andromeda.yaml` we describe some properties of a host named andromeda: -{{< highlight yaml >}} +```yaml domain: adyxax.org host_interface: dummy0 host_ip: "10.1.0.255" @@ -35,13 +35,13 @@ tunnels: peer: "10.1.0.2" remote_host: legend.adyxax.org remote_port: 1195 -{{< /highlight >}} +``` ## Reading the yaml I am bundling the values in a common bundle, accessible globally. This is one of the first bundles processed in the order my policy files are loaded. This is just an extract, you can load multiple files and merge them to distribute common settings : -{{< highlight yaml >}} +```yaml bundle common g { vars: @@ -51,14 +51,14 @@ bundle common g any:: "has_host_data" expression => fileexists("$(sys.inputdir)/cmdb/hosts/$(sys.host).yaml"); } -{{< /highlight >}} +``` ## Using the data ### Cfengine agent bundle We access the data using the global g.host_data variable, here is a complete example : -{{< highlight yaml >}} +```yaml bundle agent openvpn { vars: @@ -91,7 +91,7 @@ bundle agent openvpn "$(this.bundle): common.key repaired" ifvarclass => "openvpn_common_key_repaired"; "$(this.bundle): $(tunnels) service repaired" ifvarclass => "tunnel_$(tunnels)_service_repaired"; } - + bundle agent openvpn_tunnel(tunnel) { classes: @@ -117,12 +117,12 @@ bundle agent openvpn_tunnel(tunnel) "$(this.bundle): $(tunnel).conf repaired" ifvarclass => "openvpn_$(tunnel)_conf_repaired"; "$(this.bundle): $(tunnel) service repaired" ifvarclass => "tunnel_$(tunnel)_service_repaired"; } -{{< /highlight >}} +``` ### Template file Templates can reference the g.host_data too, like in the following : -{{< highlight cfg >}} +```cfg [%CFEngine BEGIN %] proto udp port $(g.host_data[tunnels][$(openvpn_tunnel.tunnel)][port]) @@ -152,7 +152,7 @@ group nogroup remote $(g.host_data[tunnels][$(openvpn_tunnel.tunnel)][remote_host]) $(g.host_data[tunnels][$(openvpn_tunnel.tunnel)][remote_port]) [%CFEngine END %] -{{< /highlight >}} +``` ## References - https://docs.cfengine.com/docs/master/examples-tutorials-json-yaml-support-in-cfengine.html |