Merge pull request #123 from vshn/add/backfilling

Add documentation how to backfill billingdata

docs/modules/ROOT/pages/how-tos/appcat/backfill_billing.adoc

@@ -0,0 +1,21 @@
+= Backfil Billing Data
+
+It might happen that Odoo is down for more than 3 hours.
+In that case we need to backfill the billing data for VSHN services.
+
+== Script of lesser doom
+
+In accordance to the https://git.vshn.net/aline.abler/scriptofdoom[scriptofdoom.sh], we came up with a slightly less doomy script:
+
+[source,bash]
+----
+while read -r cronjob rest
+do
+  echo $cronjob
+  kubectl --as cluster-admin -n syn-appcat create job --from cronjob/$cronjob $cronjob --dry-run -oyaml | yq e '.spec.template.spec.containers[0].args[0] = "appuio-reporting report --timerange 1h --begin=$(date -d \"now -12 hours\" -u +\"%Y-%m-%dT%H:00:00Z\") --repeat-until=$(date -u +\"%Y-%m-%dT%H:00:00Z\")"' | kubectl --as cluster-admin apply -f -
+done <<< "$(kubectl --as cluster-admin -n syn-appcat get cronjobs.batch --no-headers)"
+----
+
+This will loop over all the billing cronjobs in the `syn-appcat`, create a new job from them and replace the args with whatever we want.
+
+This specific example will backfill the last 12h, but it can be adjusted to whatever time range is needed.

docs/modules/ROOT/partials/nav.adoc

@@ -128,6 +128,9 @@
 
 ** xref:app-catalog:ROOT:how-tos/haproxy/stats.adoc[HAProxy]
 
+* HowTos
+** xref:app-catalog:ROOT:how-tos/appcat/backfill_billing.adoc[]
+
 * Runbooks
 ** PostgreSQL By VSHN
 *** xref:app-catalog:ROOT:how-tos/appcat/vshn/postgres/PostgreSQLConnectionsCritical.adoc[]