Ubuntu20.04+Apacheのインストールエラー対策

Jan 19 03:14:28 linuxmaster-01 apachectl[2433]: Invalid command 'RewriteEngine', perhaps misspelled or defined by a module not included in the server configuration

$ sudo a2enmod rewrite
Enabling module rewrite.
To activate the new configuration, you need to run:
systemctl restart apache2

Jan 19 03:15:25 linuxmaster-01 apachectl[2485]: Invalid command 'SSLEngine', perhaps misspelled or defined by a module not included in the server configuration

$ sudo a2enmod ssl
Considering dependency setenvif for ssl:
Module setenvif already enabled
Considering dependency mime for ssl:
Module mime already enabled
Considering dependency socache_shmcb for ssl:
Enabling module socache_shmcb.
Enabling module ssl.
See /usr/share/doc/apache2/README.Debian.gz on how to configure SSL and create
self-signed certificates.
To activate the new configuration, you need to run:
systemctl restart apache2

Jan 19 03:18:15 linuxmaster-01 apachectl[2599]: Invalid command 'Header', perhaps misspelled or defined by a module not included in the server configuration

$ sudo a2enmod headers
Enabling module headers.
To activate the new configuration, you need to run:
systemctl restart apache2