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Allow customize http vhost config using HttpdCustomization.CustomConfigSecret #402

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@stuggi stuggi commented Jan 22, 2025

This change allows to customize the httpd vhost config using this parameter to specify a secret that contains service config data. The content of each provided snippet gets rendered as a go template and placed into /etc/httpd/conf/httpd_custom_ .
At the end of the vhost config in the default httpd template these custom configs get included using Include conf/httpd_custom_*.

For information on how sections in httpd configuration get merged, check section "How the sections are merged" in https://httpd.apache.org/docs/current/sections.html#merging

All possible parameters which can be use in a template can be looked up in the rendered config-data cm of the service like:

$ oc get cm -n openstack horizon-config-data -o json | jq -r .data.TemplateParameters | base64 -d

or in the running pod of the service in the file:

$ cat /var/lib/config-data/default/TemplateParameters

The content is a versioned dump of the parameters of the service operator, like:

KeystoneEndpointInternal: https://keystone-internal.openstack.svc:5000
Override: false
SSLCertificateFile: /etc/pki/tls/certs/horizon.crt
SSLCertificateKeyFile: /etc/pki/tls/private/horizon.key
ServerName: horizon.openstack.svc
TLS: true
MemcachedServers: memcached-0.memcached.openstack.svc:11212
...

Depends-On: openstack-k8s-operators/lib-common#591
Depends-On: openstack-k8s-operators/lib-common#593

Jira: https://issues.redhat.com/browse/OSPRH-13100

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openshift-ci bot commented Jan 22, 2025

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: stuggi

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…igSecret

This change allows to customize the httpd vhost config using this parameter
to specify a secret that contains service config data. The content of each
provided snippet gets rendered as a go template and placed into
/etc/httpd/conf/httpd_custom_<key> .
At the end of the vhost config in the default httpd template these custom
configs get included using `Include conf/httpd_custom_*`.

For information on how sections in httpd configuration get merged, check section
"How the sections are merged" in https://httpd.apache.org/docs/current/sections.html#merging

All possible parameters which can be use in a template can be looked up
in the rendered config-data secret of the service like:
$ oc get cm -n openstack horizon-config-data -o json | jq -r .data.TemplateParameters | base64 -d

or in the running pod of the service in the file:
$ cat /var/lib/config-data/default/TemplateParameters

The content is a versioned dump of the parameters of the service operator, like:

~~~
KeystoneEndpointInternal: https://keystone-internal.openstack.svc:5000
Override: false
SSLCertificateFile: /etc/pki/tls/certs/horizon.crt
SSLCertificateKeyFile: /etc/pki/tls/private/horizon.key
ServerName: horizon.openstack.svc
TLS: true
MemcachedServers: memcached-0.memcached.openstack.svc:11212
...
~~~

Depends-On: openstack-k8s-operators/lib-common#591
Depends-On: openstack-k8s-operators/lib-common#593

Jira: https://issues.redhat.com/browse/OSPRH-13100

Signed-off-by: Martin Schuppert <[email protected]>
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