Merge branch '20468-installer-perf-knobs'. Closes #20468

Arvados-DCO-1.1-Signed-off-by: Lucas Di Pentima <lucas.dipentima@curii.com>

diff --combined tools/salt-install/config_examples/multi_host/aws/pillars/arvados.sls
index b0247b2a40616669647d5ef5f9526e77d8257e23,9ba5af9bc675a7c4483faa766e376b3c97c472f9..03859c46bde9212a249f85d073e8cf14ad066840
--- 1/tools/salt-install/config_examples/multi_host/aws/pillars/arvados.sls
--- 2/tools/salt-install/config_examples/multi_host/aws/pillars/arvados.sls
+++ b/tools/salt-install/config_examples/multi_host/aws/pillars/arvados.sls
@@@ -107,6 -107,12 +107,12 @@@ arvados
              Email: __INITIAL_USER_EMAIL__
              Password: __INITIAL_USER_PASSWORD__
  
+     ### API
+     {%- if "__CONTROLLER_MAX_CONCURRENT_REQUESTS__" != "" %}
+     API:
+       MaxConcurrentRequests: __CONTROLLER_MAX_CONCURRENT_REQUESTS__
+     {%- endif %}
+ 
      ### CONTAINERS
      Containers:
        MaxRetryAttempts: 10
@@@ -174,7 -180,7 +180,7 @@@
        WebDAV:
          ExternalURL: 'https://*.collections.__CLUSTER__.__DOMAIN__:__KEEPWEB_EXT_SSL_PORT__/'
          InternalURLs:
 -          'http://localhost:9002': {}
 +          'http://__KEEPWEB_INT_IP__:9002': {}
        WebDAVDownload:
          ExternalURL: 'https://download.__CLUSTER__.__DOMAIN__:__KEEPWEB_EXT_SSL_PORT__'
        WebShell: