Appendix A. Large Deployment Considerations

1. On Red Hat Enterprise Linux 7, create the /etc/systemd/system/httpd.service.d/limits.conf file and insert the following text:

   [Service]
   LimitNOFILE=65536

   Copy to Clipboard Toggle word wrap

2. Apply the changes to the unit.

   # systemctl daemon-reload

   Copy to Clipboard Toggle word wrap

3. Restart Katello services.

   # katello-service restart

   Copy to Clipboard Toggle word wrap

Increasing the Maximum Number of File Descriptors for qpid Using Red Hat Enterprise Linux 7

1. Create the /etc/systemd/system/qpidd.service.d/limits.conf file and insert the following text:

   [Service]
   LimitNOFILE=65536

   Copy to Clipboard Toggle word wrap

2. Apply the changes to the unit.

   # systemctl daemon-reload
   # systemctl restart qpidd.service

   Copy to Clipboard Toggle word wrap

Increasing the Maximum Number of File Descriptors for qpid Using Red Hat Enterprise Linux 6

1. Edit the /etc/security/limits.conf file and insert the following text:

   qpidd - nofile 65536

   Copy to Clipboard Toggle word wrap

2. Restart the qpidd service.

   # service qpidd restart

   Copy to Clipboard Toggle word wrap

1. On Red Hat Enterprise Linux 7, create the /var/lib/pgsql/data/postgresql.conf file and insert the following text:

   work_mem = 4MB
   shared_buffers = 256MB

   Copy to Clipboard Toggle word wrap

2. Restart postgresql services.

   # service postgresql restart

   Copy to Clipboard Toggle word wrap

1. Adjust the maximum passenger pool size to 1.5 times the physical CPU cores available to the Satellite Server.

   For example, if you have a Satellite Server with 16 cores, then the maximum passenger pool size is 24. This number is referenced as an example and you should use the number applicable to your environment.

2. Edit the /etc/httpd/conf.d/passenger.conf file, updating the IfModule stanza to match the following text:

   <IfModule mod_passenger.c>
     PassengerRoot /usr/share/gems/gems/passenger-4.0.18/lib/phusion_passenger/locations.ini
     PassengerRuby /usr/bin/ruby
     PassengerMaxPoolSize 24
     PassengerMaxRequestQueueSize 200
     PassengerStatThrottleRate 120
   </IfModule>

   Copy to Clipboard Toggle word wrap

3. Edit the Foreman Passenger application configuration file /etc/httpd/conf.d/05-foreman-ssl.conf, updating the stanza starting with PassengerAppRoot to match the following text:

    PassengerAppRoot /usr/share/foreman
    PassengerRuby /usr/bin/tfm-ruby
    PassengerMinInstances 6
    PassengerStartTimeout 90
    PassengerMaxPreloaderIdleTime 0
    PassengerMaxRequests 10000
    PassengerPreStart https://example.com

   Copy to Clipboard Toggle word wrap

4. Edit the Puppet Passenger application configuration file /etc/httpd/conf.d/25-puppet.conf, adding the following text to the end of the virtual host definition:

    PassengerMinInstances 6
    PassengerStartTimeout 90
    PassengerMaxPreloaderIdleTime 0
    PassengerMaxRequests 10000
    PassengerPreStart https://example.com:8140

   Copy to Clipboard Toggle word wrap

5. Change the maximum connections in the /var/lib/pgsql/data/postgresql.conf file.

   max_connections = 500

   Copy to Clipboard Toggle word wrap

6. Restart postgresql services.

   # service postgresql restart

   Copy to Clipboard Toggle word wrap

1. Calculate the required maximum number of open files, using the following equation.

   (3 x number of content hosts) + 100

   Copy to Clipboard Toggle word wrap

   For example, with 1020 content hosts, the new maximum should be set to 3160 ((3 x 1020) + 100).

2. On Red Hat Enterprise Linux 7, create the file /etc/systemd/system/qdrouterd.service.d/limits.conf and add the following text.

   [Service]
   LimitNOFILE=maximum_number_of_files

   Copy to Clipboard Toggle word wrap

   1. Apply the changes to the unit.

      # systemctl daemon-reload

      Copy to Clipboard Toggle word wrap

   2. Restart the Satellite services.

      # katello-service restart

      Copy to Clipboard Toggle word wrap

3. On Red Hat Enterprise Linux 6, edit the file /etc/security/limits.conf and add the following line.

   qdrouterd   -   nofile  maximum_number_of_files

   Copy to Clipboard Toggle word wrap

   Add the new line before the # End of file line because anything past that is ignored.

   1. Restart the qdrouterd service.

      # service qdrouterd restart

      Copy to Clipboard Toggle word wrap