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First, I would like to thank author of this webserver and all people who contributed and contribute to support. I just finnished installing Wordpress with PHP7.0 and MariaDB. After some experience with Apache/Nginx, I am really thankful for webserver that is BLAZING fast even without WP SuperCache and so easy and LOGICALLY to configure.

My concern (minor) is:

- when I install plugin/theme directly from WP Dashboard, WP says that installation ended in error. But nevertheless the plugin/theme was installed and works. Can someone point me in direction how can I investigate about it?

- Let's Encrypt script for Webroot method does not work (currently) with PHP7.0, there is workaround to install PHP5.6 (on Ubuntu 16.04 from third-party repo) that automatically involves installation of Apache2 etc. Is there any other way around?

Thank you guys.

Hi Ondrej, it will be helpful if you provide the error.log and your configuration's(hiawatha.conf & virtual host conf).

Hi, I am using now just hiawatha.conf as this is simple one host testing site.

hiawatha.conf:

# Hiawatha main configuration file
#

# VARIABLES
# With 'set', you can declare a variable. Make sure the name of the
# variable doesn't conflict with any of the configuration options.
# The variables are case-sensitive and cannot be redeclared.
#
set LOCALHOST = 127.0.0.0/8


# GENERAL SETTINGS
#
ServerId = www-data
ConnectionsTotal = 1000
ConnectionsPerIP = 25
SystemLogfile = /var/log/hiawatha/system.log
GarbageLogfile = /var/log/hiawatha/garbage.log


# BINDING SETTINGS
# A binding is where a client can connect to.
#
Binding {
        Port = 80
        MaxRequestSize = 1000000
        MaxUploadSize = 550

}
#
#Binding {
#       Port = 443
#       TLScertFile = ssl/hiawatha.pem
#       Interface = 127.0.0.1
#       MaxRequestSize = 2048
#       TimeForRequest = 30
#}


# BANNING SETTINGS
# Deny service to clients who misbehave.
#
#BanOnGarbage = 300
#BanOnMaxPerIP = 60
#BanOnMaxReqSize = 300
#KickOnBan = yes
#RebanDuringBan = yes


# COMMON GATEWAY INTERFACE (CGI) SETTINGS
# These settings can be used to run CGI applications.
#
CGIhandler = /usr/bin/perl:pl
CGIhandler = /usr/bin/php-cgi:php
CGIhandler = /usr/bin/python:py
CGIhandler = /usr/bin/ruby:rb
CGIhandler = /usr/bin/ssi-cgi:shtml
CGIextension = cgi
#
FastCGIserver {
        FastCGIid = PHP
        ConnectTo = /run/php/php7.0-fpm.sock
        Extension = php
}


# URL TOOLKIT
# This URL toolkit rule was made for the Banshee PHP framework,
# which can be downloaded from http://www.banshee-php.org/
#
#UrlToolkit {
#       ToolkitID = banshee
#       RequestURI isfile Return
#       Match ^/(css|files|fonts|images|js)($|/) Return
#       Match ^/(favicon.ico|robots.txt)$ Return
#       Match [^?]*(\?.*)? Rewrite /index.php$1
#}

UrlToolkit {
    ToolkitID = wordpress
    RequestURI exists Return
    Match [^?]*(\?.*)? Rewrite /index.php$1
}

UrlToolkit {
    ToolkitID = wp-multi-subdir
    Match ^/index\.php$ Return
    Match ^/([_0-9a-zA-Z-]+/)?wp-admin$ Redirect /$1wp-admin/
    RequestURI exists Return
    Match ^/([_0-9a-zA-Z-]+/)?(wp-(content|admin|includes).*) Rewrite /$2
    Match ^/([_0-9a-zA-Z-]+/)?(.*\.php)$ Rewrite /$2
    Match ^/[_0-9a-zA-Z-]+(/wp-.*) Rewrite /$1    # if not present 404 - error is displayed
    Match .* Rewrite /index.php
}



# DIRECTORY SETTINGS
# You can specify some settings per directory.
#
Directory {
        DirectoryID = static
        Path = /css, /fonts, /images, /js
        ExpirePeriod = 2 weeks
}
#
Directory {
        DirectoryID = files
        Path = /files
        ShowIndex = yes
        StartFile = index.html
        ExecuteCGI = no
}


# DEFAULT WEBSITE
# It is wise to use your IP address as the hostname of the default website
# and give it a blank webpage. By doing so, automated webscanners won't find
# your possible vulnerable website.
#
Hostname = 127.0.0.1
WebsiteRoot = /var/www/hiawatha
StartFile = index.html
AccessLogfile = /var/log/hiawatha/access.log
ErrorLogfile = /var/log/hiawatha/error.log


# VIRTUAL HOSTS
# Use a VirtualHost section for each website you want to host.
#
VirtualHost {
        Hostname = test.www.informaix.de
        WebsiteRoot = /var/www/test.www.informaix.de/wwwroot
        StartFile = index.php
        AccessLogfile = /var/www/test.www.informaix.de/log/access.log
        ErrorLogfile = /var/www/test.www.informaix.de/log/error.log
        TimeForCGI = 5
        UseFastCGI = PHP
        UseToolkit = wordpress, wp-multi-subdir
        UseDirectory = static, files
}

error.log:
79.252.222.210|Sun 04 Sep 2016 08:22:11 +0200|/var/www/test.www.informaix.de/wwwroot/wp-admin/admin-ajax.php|CGI application timeout

That would point me to PHP execution timeout, but those values are set as per recommendation for hiawatha/wordpress from http://dotbalm.org/hosting-wordpress-with-hiawatha/

Also my machine (VPS) is a decent 4-core Xeon E5 with 14GB RAM.

Got it solved - the per directory TimeForCGI was too low (5), setting it 120 does the business

Nice to hear this.

Also, there is an ERROR in this configuration ,which I copy-pasted and just customized. If you use WP Multisite install (subdirectories for individual sites in WP network), you should use only "wp-multi-subdir" UrlToolKit, noth both "wp-multi-subdir" and "wordpress". Using both in this scenario leads to rewrite conflicts ending in "HTTP too many redirects" for wp-admin of subsite and broken formating of blogs/pages.

About the Let's Encrypt... I inquired about it here... /forum/topic/2308 My PHP skills are extremely lacking but my guess would be a function was used to make the Let's Encrypt script using PHP 5 that may be deprecated in PHP 7.