zabbix_ynh/scripts/install

#!/bin/bash
##=================================================
# GENERIC START
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

source _common.sh
source /usr/share/yunohost/helpers

#=================================================
# MANAGE SCRIPT FAILURE
#=================================================

# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# RETRIEVE ARGUMENTS FROM THE MANIFEST
#=================================================

export domain="$YNH_APP_ARG_DOMAIN"
export path_url="$YNH_APP_ARG_PATH"
admin="$YNH_APP_ARG_ADMIN"
is_public="$YNH_APP_ARG_IS_PUBLIC"
language="$YNH_APP_ARG_LANGUAGE"

### If it's a multi-instance app, meaning it can be installed several times independently
### The id of the app as stated in the manifest is available as $YNH_APP_ID
### The instance number is available as $YNH_APP_INSTANCE_NUMBER (equals "1", "2", ...)
### The app instance name is available as $YNH_APP_INSTANCE_NAME
###    - the first time the app is installed, YNH_APP_INSTANCE_NAME = ynhexample
###    - the second time the app is installed, YNH_APP_INSTANCE_NAME = ynhexample__2
###    - ynhexample__{N} for the subsequent installations, with N=3,4, ...
### The app instance name is probably what interests you most, since this is
### guaranteed to be unique. This is a good unique identifier to define installation path,
### db names, ...
app="$YNH_APP_INSTANCE_NAME"

#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#=================================================

### If the app uses nginx as web server (written in HTML/PHP in most cases), the final path should be "/var/www/$app".
### If the app provides an internal web server (or uses another application server such as uwsgi), the final path should be "/opt/yunohost/$app"
final_path=/var/www/zabbix
test ! -e "$final_path" || ynh_die "This path already contains a folder"

# Normalize the url path syntax
path_url=$(ynh_normalize_url_path "$path_url")

# Check web path availability
ynh_webpath_available "$domain" "$path_url"
# Register (book) web path
ynh_webpath_register "$app" "$domain" "$path_url"

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================
ynh_print_info "Get infos from manifest"

ynh_app_setting_set "$app" domain "$domain"
ynh_app_setting_set "$app" path "$path_url"
ynh_app_setting_set "$app" admin "$admin"
ynh_app_setting_set "$app" is_public "$is_public"
ynh_app_setting_set "$app" language "$language"

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# FIND AND OPEN A PORT
#=================================================

### Use these lines if you have to open a port for the application
### `ynh_find_port` will find the first available port starting from the given port.
### If you're not using these lines:
###		- Remove the section "CLOSE A PORT" in the remove script

### Zabbix server is not opened by default for external usage.
### if you want use zabbix server with external agent (in active mode), setup the listen address in server configuration and open port on firewall via the cmd yunohost firewall

# Find a free port
#port=$(ynh_find_port 8095)
# Open this port
#yunohost firewall allow --no-upnp TCP $port 2>&1
#ynh_app_setting_set $app port $port

#=================================================
# INSTALL DEPENDENCIES
#=================================================

### `ynh_install_app_dependencies` allows you to add any "apt" dependencies to the package.
### Those deb packages will be installed as dependencies of this package.
### If you're not using this helper:
###		- Remove the section "REMOVE DEPENDENCIES" in the remove script
###		- As well as the section "REINSTALL DEPENDENCIES" in the restore script
###		- And the section "UPGRADE DEPENDENCIES" in the upgrade script
ynh_print_info "Remove Zabbix if already installed"
apt purge zabbix* -y

ynh_print_info "Install Zabbix repository"
ynh_add_extra_apt_repos__3_path=$(find /var/cache/yunohost/ -name "ynh_add_extra_apt_repos__3")
source "$ynh_add_extra_apt_repos__3_path"
ynh_install_extra_repo --repo=http://repo.zabbix.com/zabbix/4.2/debian --key=https://repo.zabbix.com/zabbix-official-repo.key  --priority=999

ynh_print_info "Update and install dependencies"
#ynh_package_update no need cause ynh_install_app_dependencies after
ynh_install_app_dependencies libapr1 libaprutil1 libaprutil1-dbd-sqlite3 libaprutil1-ldap liblua5.2-0 php7.0 php-bcmath php7.0-bcmath ttf-dejavu-core php7.0-bcmath patch smistrip unzip wget fping libcap2-bin libiksemel3 libopenipmi0 libpam-cap libsnmp-base libsnmp30 snmptrapd snmpd libjs-prototype jq zabbix-server-mysql zabbix-agent zabbix-frontend-php
dpkg -i --force-confmiss /var/cache/apt/archives/zabbix-server-mysql*
DEBIAN_FRONTEND=noninteractive apt-mark hold zabbix-server-mysql zabbix-frontend-php

sed -i "s/# fr_FR.UTF-8 UTF-8/fr_FR.UTF-8 UTF-8/g" /etc/locale.gen
locale-gen

ln -s /usr/share/zabbix "$final_path"
rm "$final_path/conf/zabbix.conf.php"

#=================================================
# CREATE A MYSQL DATABASE
#=================================================
ynh_print_info "Create and add default data in db"

### Use these lines if you need a database for the application.
### `ynh_mysql_setup_db` will create a database, an associated user and a ramdom password.
### The password will be stored as 'mysqlpwd' into the app settings,
### and will be available as $db_pwd
### If you're not using these lines:
###		- Remove the section "BACKUP THE MYSQL DATABASE" in the backup script
###		- Remove also the section "REMOVE THE MYSQL DATABASE" in the remove script
###		- As well as the section "RESTORE THE MYSQL DATABASE" in the restore script

declare db_pwd
db_name=$(ynh_sanitize_dbid "$app")
db_user="$db_name"
ynh_app_setting_set "$app" db_name "$db_name"
ynh_app_setting_set "$app" db_user "$db_user"
ynh_mysql_setup_db "$db_user" "$db_name"

export mysqlconn="mysql -u$db_user -p$db_pwd $db_name"

zcat /usr/share/doc/zabbix-server-mysql*/create.sql.gz | $mysqlconn

#sso integration
$mysqlconn -e "UPDATE \`config\` SET \`http_auth_enabled\` = '1', \`http_login_form\` = '1' WHERE \`config\`.\`configid\` = 1;"

if [ "$language" == "fr" ];then
    lang="fr_FR"
else
    lang="en_GB"
fi

#admin creation
surname=$(ynh_user_get_info "$admin" lastname)
name=$(ynh_user_get_info "$admin" firstname)

$mysqlconn -e "INSERT INTO \`users\` (\`userid\`,\`alias\`, \`name\`, \`surname\`, \`passwd\`, \`url\`, \`autologin\`, \`autologout\`, \`lang\`, \`refresh\`, \`type\`, \`theme\`, \`attempt_failed\`, \`attempt_ip\`, \`attempt_clock\`, \`rows_per_page\`) VALUES (3,'$admin', '$admin', '$admin', '5fce1b3e34b520afeffb37ce08c7cd66', '', 0, '0', '$lang', '30s', 3, 'default', 0, '', 0, 50);"
$mysqlconn -e "INSERT INTO \`users_groups\` (\`id\`, \`usrgrpid\`, \`userid\`) VALUES (5, 7, 3);"

#users creation in zabbix database
i=4
for user in $(ynh_user_list); 
do 
    if [ "$user" != "$admin" ];then
        surname=$(ynh_user_get_info "$user" lastname)
        name=$(ynh_user_get_info "$user" firstname)
        $mysqlconn -e "INSERT INTO \`users\` (\`userid\`, \`alias\`, \`name\`, \`surname\`, \`passwd\`, \`url\`, \`autologin\`, \`autologout\`, \`lang\`, \`refresh\`, \`type\`, \`theme\`, \`attempt_failed\`, \`attempt_ip\`, \`attempt_clock\`, \`rows_per_page\`) VALUES ($i,'$user', '$name', '$surname', '5fce1b3e34b520afeffb37ce08c7cd66', '', 0, '0', '$lang', '30s', 1, 'default', 0, '', 0, 50);"
        i=$((i+1))
    fi
done

disable_guest_user

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================

### `ynh_setup_source` is used to install an app from a zip or tar.gz file,
### downloaded from an upstream source, like a git repository.
### `ynh_setup_source` use the file conf/app.src

ynh_app_setting_set "$app" final_path "$final_path"
# Download, check integrity, uncompress and patch the source from app.src
#ynh_setup_source "$final_path"

ynh_print_info "Generate web config"

#=================================================
# NGINX CONFIGURATION
#=================================================

### `ynh_add_nginx_config` will use the file conf/nginx.conf

# Create a dedicated nginx config
ynh_add_nginx_config

#=================================================
# CREATE DEDICATED USER
#=================================================

# Create a system user
#ynh_system_user_create $app
#
### zabbix user created in zabbix server dpkg install

#=================================================
# PHP-FPM CONFIGURATION
#=================================================

### `ynh_add_fpm_config` is used to set up a PHP config.
### You can remove it if your app doesn't use PHP.
### `ynh_add_fpm_config` will use the files conf/php-fpm.conf and conf/php-fpm.ini
### If you're not using these lines:
###		- You can remove these files in conf/.
###		- Remove the section "BACKUP THE PHP-FPM CONFIGURATION" in the backup script
###		- Remove also the section "REMOVE PHP-FPM CONFIGURATION" in the remove script
###		- As well as the section "RESTORE THE PHP-FPM CONFIGURATION" in the restore script
###		With the reload at the end of the script.
###		- And the section "PHP-FPM CONFIGURATION" in the upgrade script

# Create a dedicated php-fpm config
ynh_add_fpm_config

#=================================================
# SPECIFIC SETUP
#=================================================
# ...
#=================================================

#=================================================
# SETUP SYSTEMD
#=================================================

### `ynh_systemd_config` is used to configure a systemd script for an app.
### It can be used for apps that use sysvinit (with adaptation) or systemd.
### Have a look at the app to be sure this app needs a systemd script.
### `ynh_systemd_config` will use the file conf/systemd.service
### If you're not using these lines:
###		- You can remove those files in conf/.
###		- Remove the section "BACKUP SYSTEMD" in the backup script
###		- Remove also the section "STOP AND REMOVE SERVICE" in the remove script
###		- As well as the section "RESTORE SYSTEMD" in the restore script
###		- And the section "SETUP SYSTEMD" in the upgrade script

# Create a dedicated systemd config
#ynh_add_systemd_config

### Systemd service created when dpkg install

#=================================================
# SETUP APPLICATION WITH CURL
#=================================================

### Use these lines only if the app installation needs to be finalized through
### web forms. We generally don't want to ask the final user,
### so we're going to use curl to automatically fill the fields and submit the
### forms.

# Set right permissions for curl install
#chown -R www-data: $final_path

# Set the app as temporarily public for curl call
#ynh_app_setting_set $app skipped_uris "/"

# Reload SSOwat config
yunohost app ssowatconf

# Reload Nginx
systemctl reload nginx

# Installation with curl
#ynh_local_curl "/INSTALL_PATH" "key1=value1" "key2=value2" "key3=value3"

#=================================================
# MODIFY A CONFIG FILE
#=================================================

### `ynh_replace_string` is used to replace a string in a file.
### (It's compatible with sed regular expressions syntax)
ynh_print_info "Generate zabbix config files"

echo "<?php
// Zabbix GUI configuration file.
global \$DB;

\$DB['TYPE']     = 'MYSQL';
\$DB['SERVER']   = 'localhost';
\$DB['PORT']     = '0';
\$DB['DATABASE'] = '$db_name';
\$DB['USER']     = '$db_user';
\$DB['PASSWORD'] = '$db_pwd';

// Schema name. Used for IBM DB2 and PostgreSQL.
\$DB['SCHEMA'] = '';

\$ZBX_SERVER      = 'localhost';
\$ZBX_SERVER_PORT = '10051';
\$ZBX_SERVER_NAME = 'zabbix-server';

\$IMAGE_FORMAT_DEFAULT = IMAGE_FORMAT_PNG;">/usr/share/zabbix/conf/zabbix.conf.php

chown -R www-data. /usr/share/zabbix

sed -i "s/DBName=zabbix/DBName=$db_name/g"  /etc/zabbix/zabbix_server.conf
sed -i "s/DBUser=zabbix/DBUser=$db_user/g"   /etc/zabbix/zabbix_server.conf
sed -i "126a DBPassword=$db_pwd"  /etc/zabbix/zabbix_server.conf

ynh_replace_string --match_string="# Timeout=3" --replace_string="# Timeout=3\nTimeout=10" --target_file=/etc/zabbix/zabbix_agentd.conf

systemctl enable zabbix-agent && systemctl restart zabbix-agent
systemctl enable zabbix-server && systemctl restart zabbix-server

#=================================================
# STORE THE CONFIG FILE CHECKSUM
#=================================================

### `ynh_store_file_checksum` is used to store the checksum of a file.
### That way, during the upgrade script, by using `ynh_backup_if_checksum_is_different`,
### you can make a backup of this file before modifying it again if the admin had modified it.

# Calculate and store the config file checksum into the app settings
#ynh_store_file_checksum "$final_path/CONFIG_FILE"

#=================================================
# GENERIC FINALIZATION
#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================

### For security reason, any app should set the permissions to root: before anything else.
### Then, if write authorization is needed, any access should be given only to directories
### that really need such authorization.

# Set permissions to app files
#chown -R root: $final_path

#=================================================
# SETUP LOGROTATE
#=================================================

### `ynh_use_logrotate` is used to configure a logrotate configuration for the logs of this app.
### Use this helper only if there is effectively a log file for this app.
### If you're not using this helper:
###		- Remove the section "BACKUP LOGROTATE" in the backup script
###		- Remove also the section "REMOVE LOGROTATE CONFIGURATION" in the remove script
###		- As well as the section "RESTORE THE LOGROTATE CONFIGURATION" in the restore script
###		- And the section "SETUP LOGROTATE" in the upgrade script

# Use logrotate to manage application logfile(s)
#native logrotate because install officials packages.
#ynh_use_logrotate

#=================================================
# ADVERTISE SERVICE IN ADMIN PANEL
#=================================================

### `yunohost service add` is a CLI yunohost command to add a service in the admin panel.
### You'll find the service in the 'services' section of YunoHost admin panel.
### This CLI command would be useless if the app does not have any services (systemd or sysvinit)
### If you're not using these lines:
###		- You can remove these files in conf/.
###		- Remove the section "REMOVE SERVICE FROM ADMIN PANEL" in the remove script
###		- As well as the section ADVERTISE SERVICE IN ADMIN PANEL" in the restore script

yunohost service add snmpd -d "Management of SNMP Daemon"
yunohost service add zabbix-server -d "Management Zabbix server daemon : Collect, agregate, compute and notify"
yunohost service add zabbix-agent -d "Management Zabbix agent daemon : send informations about this host to the server"

# Make app public if for importing template
# unprotected_uris allows SSO credentials to be passed anyway
ynh_app_setting_set "$app" unprotected_uris "/"

#=================================================
# RELOAD NGINX AND PHP-FPM
#=================================================

systemctl reload nginx
systemctl reload php7.0-fpm

# Reload SSOwat config
yunohost app ssowatconf

#=================================================
# Import Yunohost template
#=================================================
import_template

#=================================================
# Link Yunohost template to the ZAbbix Server Host
#=================================================
link_template

#=================================================
# disable default admin 
#=================================================
disable_admin_user

#=================================================
# SETUP SSOWAT
#=================================================

# Make app private if necessary
if [ "$is_public" -eq 0 ]
then
	# unprotected_uris allows SSO credentials to be passed anyway.
	ynh_app_setting_delete "$app" unprotected_uris
fi
#=================================================
# RELOAD NGINX AND PHP-FPM
#=================================================

systemctl reload nginx
systemctl reload php7.0-fpm

# Reload SSOwat config
yunohost app ssowatconf

#test if zabbix server is started
check_proc_zabbixagent

#test if zabbix agent is started
check_proc_zabbixserver