diff --git a/clusters/yc-k8s-test/infrastructure/patches/kafka.yaml b/clusters/yc-k8s-test/infrastructure/patches/kafka.yaml
index 16a3925..4c6deea 100644
--- a/clusters/yc-k8s-test/infrastructure/patches/kafka.yaml
+++ b/clusters/yc-k8s-test/infrastructure/patches/kafka.yaml
@@ -22,25 +22,15 @@ spec:
 
           openssl pkcs8 -topk8 -nocrypt -in /mounted-certs/tls.key -out /tmp/tls.key.pk8
 
-          # Валидация: key должен читаться
           openssl pkey -in /tmp/tls.key.pk8 -text -noout >/dev/null
-
-          # Валидация: cert и key должны совпадать
           openssl pkey -in /tmp/tls.key.pk8 -pubout -out /tmp/key.pub
           openssl x509 -in /mounted-certs/tls.crt -pubkey -noout > /tmp/cert.pub
           diff -u /tmp/key.pub /tmp/cert.pub >/dev/null
 
-          {
-            printf '\nssl.keystore.key='
-            awk '{ sub(/\r$/, ""); printf "%s\\\\n", $0 }' /tmp/tls.key.pk8
-            printf '\n'
-            printf 'ssl.keystore.certificate.chain='
-            awk '{ sub(/\r$/, ""); printf "%s\\\\n", $0 }' /mounted-certs/tls.crt
-            printf '\n'
-            printf 'ssl.truststore.certificates='
-            awk '{ sub(/\r$/, ""); printf "%s\\\\n", $0 }' /mounted-certs/ca.crt
-            printf '\n'
-          } >> /config/server.properties
+          append_multiline_property "ssl.keystore.key" "/tmp/tls.key.pk8"
+          append_multiline_property "ssl.keystore.certificate.chain" "/mounted-certs/tls.crt"
+          append_multiline_property "ssl.truststore.certificates" "/mounted-certs/ca.crt"
+          
     global:
       imagePullSecrets:
         - regcred