devstack/lib/apache
Morgan Fainberg 46455a34d5 Update Apache + mod_wsgi deployment mechanisms
Added a global toggle for enabling HTTPD + mod_wsgi for services
that default deploy to running under Apache. When the variable
``ENABLE_HTTPD_MOD_WSGI_SERVICES`` is set to ``True`` any service
that recommends deploying under HTTPD + mod_wsgi, will be run
under Apache.

If ``ENABLE_HTTPD_MOD_WSGI_SERVICES`` is set to ``False`` the
any service that is defaulted to running under HTTPD + mod_wsgi
will (if capable) be run in an alternate deployment strategy (e.g.
eventlet).

Updated Swift and Keystone to have individual toggles for deploying
under HTTPD + mod_wsgi. This is done to allow for gate to run on
the services under mod_wsgi where appropriate. Toggles are
``KEYSTONE_USE_MOD_WSGI`` and ``SWIFT_USE_MOD_WSGI`` and are both
defaulted to "False" (do not deploy under HTTPD + mod_wsgi).

Change-Id: Id3b121b8f1cde369d184b586e0d875bdbda34813
2014-07-07 08:46:28 -07:00

163 lines
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# lib/apache
# Functions to control configuration and operation of apache web server
# Dependencies:
#
# - ``functions`` file
# - ``STACK_USER`` must be defined
#
# lib/apache exports the following functions:
#
# - install_apache_wsgi
# - config_apache_wsgi
# - apache_site_config_for
# - enable_apache_site
# - disable_apache_site
# - start_apache_server
# - stop_apache_server
# - restart_apache_server
# Save trace setting
XTRACE=$(set +o | grep xtrace)
set +o xtrace
# Allow overriding the default Apache user and group, default to
# current user and his default group.
APACHE_USER=${APACHE_USER:-$STACK_USER}
APACHE_GROUP=${APACHE_GROUP:-$(id -gn $APACHE_USER)}
# Set up apache name and configuration directory
if is_ubuntu; then
APACHE_NAME=apache2
APACHE_CONF_DIR=${APACHE_CONF_DIR:-/etc/$APACHE_NAME/sites-available}
elif is_fedora; then
APACHE_NAME=httpd
APACHE_CONF_DIR=${APACHE_CONF_DIR:-/etc/$APACHE_NAME/conf.d}
elif is_suse; then
APACHE_NAME=apache2
APACHE_CONF_DIR=${APACHE_CONF_DIR:-/etc/$APACHE_NAME/vhosts.d}
fi
# Functions
# ---------
# install_apache_wsgi() - Install Apache server and wsgi module
function install_apache_wsgi {
# Apache installation, because we mark it NOPRIME
if is_ubuntu; then
# Install apache2, which is NOPRIME'd
install_package apache2 libapache2-mod-wsgi
# WSGI isn't enabled by default, enable it
sudo a2enmod wsgi
elif is_fedora; then
sudo rm -f /etc/httpd/conf.d/000-*
install_package httpd mod_wsgi
elif is_suse; then
install_package apache2 apache2-mod_wsgi
# WSGI isn't enabled by default, enable it
sudo a2enmod wsgi
else
exit_distro_not_supported "apache installation"
fi
}
# apache_site_config_for() - The filename of the site's configuration file.
# This function uses the global variables APACHE_NAME and APACHE_CONF_DIR.
#
# On Ubuntu 14.04, the site configuration file must have a .conf suffix for a2ensite and a2dissite to
# recognise it. a2ensite and a2dissite ignore the .conf suffix used as parameter. The default sites'
# files are 000-default.conf and default-ssl.conf.
#
# On Ubuntu 12.04, the site configuration file may have any format, as long as it is in
# /etc/apache2/sites-available/. a2ensite and a2dissite need the entire file name to work. The default
# sites' files are default and default-ssl.
#
# On Fedora and openSUSE, any file in /etc/httpd/conf.d/ whose name ends with .conf is enabled.
#
# On RHEL and CentOS, things should hopefully work as in Fedora.
#
# The table below summarizes what should happen on each distribution:
# +----------------------+--------------------+--------------------------+--------------------------+
# | Distribution | File name | Site enabling command | Site disabling command |
# +----------------------+--------------------+--------------------------+--------------------------+
# | Ubuntu 12.04 | site | a2ensite site | a2dissite site |
# | Ubuntu 14.04 | site.conf | a2ensite site | a2dissite site |
# | Fedora, RHEL, CentOS | site.conf.disabled | mv site.conf{.disabled,} | mv site.conf{,.disabled} |
# +----------------------+--------------------+--------------------------+--------------------------+
function apache_site_config_for {
local site=$@
if is_ubuntu; then
local apache_version=$(sudo /usr/sbin/apache2ctl -v | awk '/Server version/ {print $3}' | cut -f2 -d/)
if [[ "$apache_version" =~ ^2\.2\. ]]; then
# Ubuntu 12.04 - Apache 2.2
echo $APACHE_CONF_DIR/${site}
else
# Ubuntu 14.04 - Apache 2.4
echo $APACHE_CONF_DIR/${site}.conf
fi
elif is_fedora || is_suse; then
# fedora conf.d is only imported if it ends with .conf so this is approx the same
local enabled_site_file="$APACHE_CONF_DIR/${site}.conf"
if [ -f $enabled_site_file ]; then
echo ${enabled_site_file}
else
echo ${enabled_site_file}.disabled
fi
fi
}
# enable_apache_site() - Enable a particular apache site
function enable_apache_site {
local site=$@
if is_ubuntu; then
sudo a2ensite ${site}
elif is_fedora || is_suse; then
local enabled_site_file="$APACHE_CONF_DIR/${site}.conf"
# Do nothing if site already enabled or no site config exists
if [[ -f ${enabled_site_file}.disabled ]] && [[ ! -f ${enabled_site_file} ]]; then
sudo mv ${enabled_site_file}.disabled ${enabled_site_file}
fi
fi
}
# disable_apache_site() - Disable a particular apache site
function disable_apache_site {
local site=$@
if is_ubuntu; then
sudo a2dissite ${site}
elif is_fedora || is_suse; then
local enabled_site_file="$APACHE_CONF_DIR/${site}.conf"
# Do nothing if no site config exists
if [[ -f ${enabled_site_file} ]]; then
sudo mv ${enabled_site_file} ${enabled_site_file}.disabled
fi
fi
}
# start_apache_server() - Start running apache server
function start_apache_server {
start_service $APACHE_NAME
}
# stop_apache_server() - Stop running apache server
function stop_apache_server {
if [ -n "$APACHE_NAME" ]; then
stop_service $APACHE_NAME
else
exit_distro_not_supported "apache configuration"
fi
}
# restart_apache_server
function restart_apache_server {
restart_service $APACHE_NAME
}
# Restore xtrace
$XTRACE
# Tell emacs to use shell-script-mode
## Local variables:
## mode: shell-script
## End: