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--- computers:apache_server_configuration [2018/12/17 11:44] – chkuo
+++ computers:apache_server_configuration [2022/11/02 16:04] (current) – chkuo
@@ Line 92: / Line 92: @@
 </file>
+===== Update =====
+<code bash>
+# for Ubuntu 20.04.5 LTS; 2022/11/02
+# to update beyond Apache/2.4.41
+$ apache2 -v
+Server version: Apache/2.4.41 (Ubuntu)
+Server built:   2022-06-14T13:30:55
+$ sudo add-apt-repository ppa:ondrej/apache2
+$ sudo apt update
+$ sudo apt install apache2
+$ apache2 -v
+Server version: Apache/2.4.54 (Ubuntu)
+Server built:   2022-06-08T15:59:07
+$ systemctl status apache2
+$ sudo systemctl start apache2
+$ sudo systemctl enable apache2
+</code>
 ===== Password protection =====
@@ Line 115: / Line 134: @@
   * install:
 <code bash>
-$ sudo apt-get update
+# require snapd; pre-installed on Ubuntu 20.04
-$ sudo apt-get install software-properties-common
+# remove the pre-installed cerbot (if present)
-$ sudo add-apt-repository universe
+$ sudo apt remove certbot
-$ sudo add-apt-repository ppa:certbot/certbot
+# install certbot using snap
-$ sudo apt-get update
+$ sudo snap install --classic certbot
-$ sudo apt-get install python-certbot-apache
+# get a certificate; two options
+# (1) get a certificate without changing the Apache configuration
+$ sudo certbot certonly --apache
+# (2) get a certificate and have certbot edit the Apache configuration
+$ sudo certbot --apache
+#
+# check status
+$ sudo systemctl status certbot.timer
+# test renewal
+$ sudo certbot renew --dry-run
+# manual renewal; not recommended
+# better to put '/usr/bin/certbot renew --quiet' in crontab
+$ sudo certbot renew
+# enable ssl
+$ sudo a2enmod ssl
 </code>
     * modify ''/etc/apache2/sites-available/000-default.conf'' accordingly
@@ Line 127: / Line 160: @@
 	ServerAdmin admin@example.com
 </file>
-    * execute
-<code bash>
-$ sudo certbot --apache
-</code>
+  * SSL test: [[https://www.ssllabs.com/ssltest/]]
 ===== PHP =====
 ==== Info ====
@@ Line 204: / Line 234: @@
 sudo htpasswd -c /var/www/webdav/passwd.dav test
 # change the ownership and permissions
-sudo chown www-data:admin /var/www/webdav/passwd.dav
+sudo chown www-data:adm /var/www/webdav/passwd.dav
 sudo chmod 640 /var/www/webdav/passwd.dav
 # backup the vhost configuration
@@ Line 239: / Line 269: @@
 ==== References ====
+  * [[https://www.digitalocean.com/community/tutorials/how-to-install-the-apache-web-server-on-ubuntu-20-04]]
   * [[https://www.digitalocean.com/community/tutorials/how-to-install-the-apache-web-server-on-ubuntu-18-04]]