Difference between pages "New EAPI specification" and "Web-server-stack"

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(some guidelines for new spec)
 
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This page explains the need for a new EAPI specification and the guidelines for it.
 
  
== Current specification ==
+
== Pre-install considerations ==
 +
=== ssl ===
 +
Ssl [http://en.wikipedia.org/wiki/Wildcard_certificate wild card certificates] can use the same certificate to cover several subdomain names.  As in https://wiki.funtoo.org https://www.funtoo.org https://forums.funtoo.org can all use the same certificate.  https://funtoo.org would not be covered under the wildcard, so [[User:Threesixes|Threesixes]] ([[User talk:Threesixes|talk]]) suggests using http://domain.tld as a http navigation splash page directory.  All that is required to setup a ca signed ssl certificate is an email on the server.  https://www.startssl.com offers free ssl ca certificates, though there are several other certificate [http://en.wikipedia.org/wiki/Certificate_authority#Providers providers].  Many web apps require you set your URL & will have problems if your URL is set to http://, rather than https://
  
The ebuild format is currently covered by the [https://wiki.gentoo.org/wiki/Project:PMS Package Manager Specification]. This is an Exherbo-originated project that is maintained in Gentoo-Exherbo cooperation. Sadly, the current spec shows a number of issues.
+
=== sockets vs tcp stack ===
 +
Sockets have less overhead but can not be shared across jails, or to other machines. Tcp stack has more overhead but is far more flexible.
  
Most notably, the current organization and wording often proves cumbersome for developers. It is easy to mis-understand some of the sections of the specification. Sometimes it is necessary to read multiple (non-cross-referenced) sections to understand the actual status.
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=== Email Servers ===
 +
* {{Package|mail-mta/postfix}}  <-- suggested
 +
* {{Package|mail-mta/ssmtp}}
 +
* {{Package|mail-mta/exim}}
 +
* {{Package|mail-mta/sendmail}}
 +
* {{Package|mail-mta/nullmailer}}
  
The specification often misses rationale, historical or implementation notes. It also has been changed retroactively a few times without a proper behavior change note.
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=== FTP Servers ===
 +
It is common practice to use FTP servers to host files for downloading.
  
The specification offers only limited description of ebuild, profile and repository format. It lacks any details on multi-repository systems, installed package database (vardb), md5-cache. The Manifest files are specified only via reference to [https://wiki.gentoo.org/wiki/GLEP:44 GLEP-44] which also doesn't cover most recent changes in Manifest format.
+
* {{Package|net-ftp/vsftpd}} <-- suggested
 +
* {{Package|net-ftp/proftpd}}
 +
* {{Package|net-ftp/pure-ftpd}}
 +
* {{Package|net-ftp/qshare}}
  
== Guidelines for new specification ==
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== Webserver ==
The new '''EAPI specification''' needs to follow the following guidelines:
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Web servers come in several varieties.  The most common stack is known as LAMP which stands for linux apache mysql php.  [[User:Threesixes|Threesixes]] ([[User talk:Threesixes|talk]]) suggests setting up the web server stack by selecting the database first, then scripting language second, and web server 3rd.
  
# it should be self-contained and provide coverage of all the most important interoperability aspects.
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=== Databases ===
# It should be focused on the newest EAPI. Previous EAPIs should be covered as differences from the newest EAPI and dedicated historical sections.
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* {{Package|dev-db/mysql}}
# It should contain (as appropriately marked subsections) rationales, implementation notes, explanatory notes, possibly examples.
+
 
# Format descriptions should be as simple as possible. Whenever appropriate, a BNF variant should be preferred over textual descriptions or regular expressions.
+
mariadb is a drop in replacement for mysql
 +
* {{Package|dev-db/mariadb}} <-- suggested
 +
 
 +
percona is a drop in replacement for mysql
 +
* {{Package|dev-db/percona-server}}
 +
 
 +
* {{Package|dev-db/postgresql-server}}
 +
* {{Package|dev-db/sqlite}}
 +
 
 +
=== Languages ===
 +
* {{Package|dev-lang/php}} <-- suggested
 +
* {{Package|dev-lang/perl}}
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* {{Package|dev-lang/python}}
 +
 
 +
=== Web Servers ===
 +
* {{Package|www-servers/apache}}
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* {{Package|www-servers/cherokee}}
 +
* {{Package|www-servers/nginx}} <-- suggested
 +
* {{Package|www-servers/tengine}}
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* {{Package|www-servers/lighttpd}}
 +
 
 +
 
 +
=== SSL Termination, Reverse Proxies, & load balancing ===
 +
Reverse proxies are useful, some cache static data, and shuck out cached pages rather than hitting the web server.  Some pass requests to backend nodes high availability clustering your website, some web servers have this functionality built in.
 +
 
 +
* {{Package|www-servers/nginx}}
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* {{package|net-misc/stunnel}}
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* {{package|www-servers/pound}} <-- suggested for ssl termination & load balancing
 +
* {{Package|www-servers/varnish}} <-- suggested for caching to reduce power consumption & reduce the need of constantly rebuilding pages
 +
* {{Package|net-proxy/squid}}
 +
 
 +
== Post install ==
 +
There are several considerations to take into account with a web server install, such as setting up an email server, setting up a firewall, firewalling web applications, and dynamically firewalling attackers.
 +
 
 +
=== Firewalls ===
 +
* {{Package|net-firewall/nftables}}
 +
* {{Package|net-firewall/iptables}} <-- suggested
 +
* {{Package|net-firewall/firewalld}}
 +
* {{Package|net-firewall/ufw}}
 +
 
 +
=== Dynamic Firewalling ===
 +
* {{Package|app-admin/sshguard}} <-- suggested
 +
* {{Package|net-analyzer/fail2ban}}
 +
 
 +
=== Webapp Firewalls ===
 +
 
 +
Apache has an option for webapplication firewalling.  as far as [[User:Threesixes|Threesixes]] ([[User talk:Threesixes|talk]]) can tell this passes login errors & excessive site fuzzing to logs for fail2ban/sshguard to deal with.
 +
https://github.com/nbs-system/naxsi is a web app firewall for nginx.
 +
 
 +
=== Benchmarking ===
 +
It's a good idea to benchmark your system, server, & websites.  There are several tools to assist you in doing this.
 +
 
 +
* http://toolbar.netcraft.com/site_report?url=undefined#last_reboot
 +
* http://www.showslow.com/
 +
* http://yslow.org/
 +
* http://getfirebug.com/
 +
* {{Package|app-admin/apache-tools}}
 +
* {{Package|app-benchmarks/sysbench}}
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* {{Package|app-benchmarks/phoronix-test-suite}}
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* {{Package|app-benchmarks/iozone}}
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* {{Package|app-benchmarks/piozone}}
 +
* {{Package|app-benchmarks/siege}}
 +
* {{Package|app-benchmarks/ramspeed}}
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* {{Package|app-benchmarks/jmeter}}

Revision as of 13:22, January 18, 2015

Pre-install considerations

ssl

Ssl wild card certificates can use the same certificate to cover several subdomain names. As in https://wiki.funtoo.org https://www.funtoo.org https://forums.funtoo.org can all use the same certificate. https://funtoo.org would not be covered under the wildcard, so Threesixes (talk) suggests using http://domain.tld as a http navigation splash page directory. All that is required to setup a ca signed ssl certificate is an email on the server. https://www.startssl.com offers free ssl ca certificates, though there are several other certificate providers. Many web apps require you set your URL & will have problems if your URL is set to http://, rather than https://

sockets vs tcp stack

Sockets have less overhead but can not be shared across jails, or to other machines. Tcp stack has more overhead but is far more flexible.

Email Servers

FTP Servers

It is common practice to use FTP servers to host files for downloading.

Webserver

Web servers come in several varieties. The most common stack is known as LAMP which stands for linux apache mysql php. Threesixes (talk) suggests setting up the web server stack by selecting the database first, then scripting language second, and web server 3rd.

Databases

mariadb is a drop in replacement for mysql

percona is a drop in replacement for mysql

  • dev-db/percona-server (package not on wiki - please add)

Languages

Web Servers


SSL Termination, Reverse Proxies, & load balancing

Reverse proxies are useful, some cache static data, and shuck out cached pages rather than hitting the web server. Some pass requests to backend nodes high availability clustering your website, some web servers have this functionality built in.

Post install

There are several considerations to take into account with a web server install, such as setting up an email server, setting up a firewall, firewalling web applications, and dynamically firewalling attackers.

Firewalls

Dynamic Firewalling

Webapp Firewalls

Apache has an option for webapplication firewalling. as far as Threesixes (talk) can tell this passes login errors & excessive site fuzzing to logs for fail2ban/sshguard to deal with. https://github.com/nbs-system/naxsi is a web app firewall for nginx.

Benchmarking

It's a good idea to benchmark your system, server, & websites. There are several tools to assist you in doing this.