Apache sslengine on ошибка

When I restart httpd, I get the following error. What am I missing?

[root@localhost ~]# service httpd restart
Stopping httpd:                                            [  OK  ]
Starting httpd: Syntax error on line 22 of /etc/httpd/conf.d/sites.conf:
Invalid command 'SSLEngine', perhaps misspelled or defined by a module not included in the server configuration

I have installed mod_ssl using yum install mod_ssl openssh

Package 1:mod_ssl-2.2.15-15.el6.centos.x86_64 already installed and latest version
Package openssh-5.3p1-70.el6_2.2.x86_64 already installed and latest version

My sites.conf looks like this

<VirtualHost *:80>
#    ServerName shop.itmanx.com
    ServerAdmin webmaster@itmanx.com

    DocumentRoot /var/www/html/magento
    <Directory /var/www/html>
        Options -Indexes
        AllowOverride All
    </Directory>

    ErrorLog logs/shop-error.log
    CustomLog logs/shop-access.log
</VirtualHost>

<VirtualHost *:443>
    ServerName secure.itmanx.com
    ServerAdmin webmaster@itmanx.com

    SSLEngine on
    SSLCertificateFile /etc/httpd/ssl/secure.itmanx.com/server.crt
    SSLCertificateKeyFile /etc/httpd/ssl/secure.itmanx.com/server.key
    SSLCertificateChainFile /etc/httpd/ssl/secure.itmanx.com/chain.crt

    DocumentRoot /var/www/html/magento
    <Directory /var/www/html>
        Options -Indexes
        AllowOverride All
    </Directory>

    ErrorLog logs/shop-ssl-error.log
    CustomLog logs/shop-ssl-access.log    
</VirtualHost>

My SSL virtual host is as simple as that:

LoadModule ssl_module modules/mod_ssl.so

Listen 443
<VirtualHost *:443>
        DocumentRoot "/srv/www/test"
        ServerName <my_website_domain>

        SSLEngine on
        SSLCertificateFile    /etc/ssl/certs/apache-selfsigned.crt
        SSLCertificateKeyFile /etc/ssl/private/apache-selfsigned.key
</VirtualHost>

When I try to restart apache with apache2ctl configtest && systemctl restart apache2 I get:

Syntax OK
Job for apache2.service failed because the control process exited with error code. See «systemctl status apache2.service» and «journalctl -xe» for details.

But when I turn off SSLEngine with SSLEngine off apache starts normally and ok.

When I run systemctl status apache2 after starting with SSLEngine on, I get:

Syntax OK
● apache2.service - The Apache Webserver
   Loaded: loaded (/usr/lib/systemd/system/apache2.service; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Fri 2020-08-14 18:06:55 CEST; 1min 9s ago
  Process: 22352 ExecStop=/usr/sbin/start_apache2 -DSYSTEMD -DFOREGROUND -k graceful-stop (code=exited, status=0/SUCCESS)
  Process: 19851 ExecReload=/usr/sbin/start_apache2 -DSYSTEMD -DFOREGROUND -k graceful (code=exited, status=0/SUCCESS)
  Process: 22346 ExecStart=/usr/sbin/start_apache2 -DSYSTEMD -DFOREGROUND -k start (code=exited, status=1/FAILURE)
 Main PID: 22346 (code=exited, status=1/FAILURE)

Aug 14 18:06:55 luu056d start_apache2[22352]: [Fri Aug 14 18:06:55.351148 2020] [so:warn] [pid 22352] AH01574: module authn_core_module is already loaded, skipping
Aug 14 18:06:55 luu056d start_apache2[22352]: [Fri Aug 14 18:06:55.351163 2020] [so:warn] [pid 22352] AH01574: module authz_core_module is already loaded, skipping
Aug 14 18:06:55 luu056d start_apache2[22352]: [Fri Aug 14 18:06:55.351170 2020] [so:warn] [pid 22352] AH01574: module php5_module is already loaded, skipping
Aug 14 18:06:55 luu056d start_apache2[22352]: [Fri Aug 14 18:06:55.351179 2020] [so:warn] [pid 22352] AH01574: module ssl_module is already loaded, skipping
Aug 14 18:06:55 luu056d start_apache2[22352]: [Fri Aug 14 18:06:55.352998 2020] [so:warn] [pid 22352] AH01574: module ssl_module is already loaded, skipping
Aug 14 18:06:55 luu056d start_apache2[22352]: [Fri Aug 14 18:06:55.356261 2020] [core:warn] [pid 22352] AH00117: Ignoring deprecated use of DefaultType in line 143 of /etc/apa.../httpd.conf.
Aug 14 18:06:55 luu056d start_apache2[22352]: httpd (no pid file) not running
Aug 14 18:06:55 luu056d systemd[1]: Failed to start The Apache Webserver.
Aug 14 18:06:55 luu056d systemd[1]: apache2.service: Unit entered failed state.
Aug 14 18:06:55 luu056d systemd[1]: apache2.service: Failed with result 'exit-code'.
Hint: Some lines were ellipsized, use -l to show in full.

Why am I getting that error httpd (no pid file) not running when I turn on SSLEngine?
Nothing is blocking port 443, since when I run lsof -i :443 the result is empty.

I’m using Apache/2.4.23 for Linux/SUSE

Apache

If you are moving an existing Apache configuration file from one server to another,  or if you are enabling SSL configuration on an existing website,  you could run into this error as you restart apache

server#/etc/init.d/apache2 restart
Invalid command 'SSLEngine', perhaps misspelled or defined by a module not included in the server configuration

This essentially means that Apache doesn’t understand what the SSLEngine command means.   This is most likely because SSL has not been enabled on this server.  For quite some time SSL has come with Apache2 by default,  however you do still have to enable it.

To enable it you can simply run enable the ‘ssl’ apache module the command

#a2enmod ssl
#/etc/init.d/apache2 reload #or
#/etc/init.d/apache2 restart

The error should no longer show a the SSLEngine command is correctly recognized by the ssl mod.