Ollama: Ollama: improve existing draft article

2026-10-05T06:32:52Z

Ollama: improve existing draft article

← Older revision		Revision as of 06:32, 5 October 2026
Line 1:		Line 1:
			[[Certbot]] is an open-source software tool developed by the Let's Encrypt project to automate the process of obtaining and installing SSL/TLS certificates. These certificates are essential for enabling HTTPS on websites, ensuring secure communication between servers and clients. By simplifying the certificate management workflow, [[Certbot]] has become a widely adopted solution for system administrators and developers seeking to enhance web security without manual intervention.
⚫	https://unix.stackexchange.com/questions/301266/~~certbot~~-add-www-domain-to-existing-domain-certificate

			{{H2\|DNS Challenge Configuration}}
			To obtain a certificate using the DNS challenge method, users can execute commands such as:
			```bash
		⚫	[[Certbot]] certonly --manual --preferred-challenges dns -d "paulelam.com"
			```
			This command instructs [[Certbot]] to generate a certificate for the domain "paulelam.com" by validating domain ownership through DNS records. For additional subdomains, the `--expand` flag can be used to include them in the certificate:
			```bash
		⚫	[[Certbot]] certonly --manual --preferred-challenges dns --expand -d "paulelam.com" -d "www.paulelam.com"
			```
			The DNS challenge requires users to create specific DNS records (e.g., TXT records) to prove control over the domain. This method is particularly useful for domains hosted on platforms that do not support HTTP-based validation.

			{{H2\|Web Server Integration}}
	== DNS ==
			[[Certbot]] also supports the web challenge method, which automates certificate validation by interacting with a web server. This approach is ideal for domains hosted on traditional web servers that can respond to HTTP requests. The exact implementation depends on the server software (e.g., Apache, Nginx) and may involve configuring plugins or hooks to facilitate the process.

			{{H2\|Certificate Renewal}}
⚫	~~certbot~~ certonly --manual --preferred-challenges dns -d "paulelam.com"
			SSL/TLS certificates issued by Let's Encrypt are valid for 90 days. [[Certbot]] includes built-in mechanisms to automate renewal, ensuring uninterrupted service. Users can schedule periodic checks using cron jobs or systemd timers. For example:
			```bash
			[[Certbot]] renew
			```
			This command will attempt to renew any certificates that are due for renewal, reissuing them if necessary and updating the associated configuration files.

			{{H2\|Examining Certificates}}
⚫	~~certbot~~ certonly --manual --preferred-challenges dns --expand -d "paulelam.com" -d "www.paulelam.com"
			After obtaining a certificate, users can inspect its contents using tools like OpenSSL. For instance, the following command displays detailed information about a certificate stored in `certificate.pem`:
			```bash
		⚫	openssl x509 -in certificate.pem -text
			```
			This output includes metadata such as the certificate's validity period, issuer, subject, and public key details.

			{{H2\|References}}
	== Web ==
		⚫	- [Unix Stack Exchange: [[Certbot]] and domain certificate expansion](https://unix.stackexchange.com/questions/301266/[[Certbot]]-add-www-domain-to-existing-domain-certificate) (Unix Stack Exchange)

			{{Ollama}}

			{{Pending Human Review}}
	=== Renew ===

	== Examine certificates ==

⚫	openssl x509 -in certificate.pem -text

	{{Draft}}
	{{Linux}}

Robert Brockway at 02:15, 20 April 2024

2024-04-20T02:15:24Z

← Older revision		Revision as of 02:15, 20 April 2024
Line 12:		Line 12:

	=== Renew ===		=== Renew ===

			== Examine certificates ==

			openssl x509 -in certificate.pem -text

	{{Draft}}		{{Draft}}

Robert Brockway at 14:20, 19 April 2024

2024-04-19T14:20:39Z

← Older revision		Revision as of 14:20, 19 April 2024
Line 5:		Line 5:

	certbot certonly --manual --preferred-challenges dns -d "paulelam.com"		certbot certonly --manual --preferred-challenges dns -d "paulelam.com"

			certbot certonly --manual --preferred-challenges dns --expand -d "paulelam.com" -d "www.paulelam.com"

	== Web ==		== Web ==

Robert Brockway at 13:50, 19 April 2024

2024-04-19T13:50:52Z

← Older revision	Revision as of 13:50, 19 April 2024
Line 1:	Line 1:
		https://unix.stackexchange.com/questions/301266/certbot-add-www-domain-to-existing-domain-certificate

Robert Brockway at 12:04, 15 April 2024

2024-04-15T12:04:07Z

← Older revision		Revision as of 12:04, 15 April 2024
Line 4:		Line 4:
	== DNS ==		== DNS ==

	certbot certonly --manual --preferred-challenges dns -d "*.paulelam.com"		certbot certonly --manual --preferred-challenges dns -d "paulelam.com"

	== Web ==		== Web ==

Robert Brockway at 11:24, 15 April 2024

2024-04-15T11:24:04Z

← Older revision		Revision as of 11:24, 15 April 2024
Line 1:		Line 1:



			== DNS ==

			certbot certonly --manual --preferred-challenges dns -d "*.paulelam.com"

			== Web ==


			=== Renew ===

	{{Draft}}		{{Draft}}

Robert Brockway: Created page with " {{Draft}} {{Linux}}"

2024-04-15T11:23:29Z

Created page with " {{Draft}} {{Linux}}"

New page