#!/bin/bash set -o pipefail set +e # Script trace mode if [ "${DEBUG_MODE,,}" == "true" ]; then set -o xtrace fi # Default Zabbix installation name # Used only by Zabbix web-interface : ${ZBX_SERVER_NAME:="Zabbix docker"} # Default Zabbix server host : ${ZBX_SERVER_HOST:="zabbix-server"} # Default Zabbix server port number : ${ZBX_SERVER_PORT:="10051"} # Default timezone for web interface : ${PHP_TZ:="Europe/Riga"} # Default directories # Configuration files directory ZABBIX_ETC_DIR="/etc/zabbix" # Web interface www-root directory ZABBIX_WWW_ROOT="/usr/share/zabbix" # usage: file_env VAR [DEFAULT] # as example: file_env 'MYSQL_PASSWORD' 'zabbix' # (will allow for "$MYSQL_PASSWORD_FILE" to fill in the value of "$MYSQL_PASSWORD" from a file) # unsets the VAR_FILE afterwards and just leaving VAR file_env() { local var="$1" local fileVar="${var}_FILE" local defaultValue="${2:-}" if [ "${!var:-}" ] && [ "${!fileVar:-}" ]; then echo "**** Both variables $var and $fileVar are set (but are exclusive)" exit 1 fi local val="$defaultValue" if [ "${!var:-}" ]; then val="${!var}" echo "** Using ${var} variable from ENV" elif [ "${!fileVar:-}" ]; then if [ ! -f "${!fileVar}" ]; then echo "**** Secret file \"${!fileVar}\" is not found" exit 1 fi val="$(< "${!fileVar}")" echo "** Using ${var} variable from secret file" fi export "$var"="$val" unset "$fileVar" } # Check prerequisites for MySQL database check_variables() { if [ ! -n "${DB_SERVER_SOCKET}" ]; then : ${DB_SERVER_HOST:="mysql-server"} else DB_SERVER_HOST="localhost" fi : ${DB_SERVER_PORT:="3306"} file_env MYSQL_USER file_env MYSQL_PASSWORD DB_SERVER_ZBX_USER=${MYSQL_USER:-"zabbix"} DB_SERVER_ZBX_PASS=${MYSQL_PASSWORD:-"zabbix"} DB_SERVER_DBNAME=${MYSQL_DATABASE:-"zabbix"} if [ ! -n "${DB_SERVER_SOCKET}" ]; then mysql_connect_args="-h ${DB_SERVER_HOST} -P ${DB_SERVER_PORT}" else mysql_connect_args="-S ${DB_SERVER_SOCKET}" fi } db_tls_params() { local result="" if [ "${ZBX_DB_ENCRYPTION,,}" == "true" ]; then result="--ssl" if [ -n "${ZBX_DB_CA_FILE}" ]; then result="${result} --ssl-ca=${ZBX_DB_CA_FILE}" fi if [ -n "${ZBX_DB_KEY_FILE}" ]; then result="${result} --ssl-key=${ZBX_DB_KEY_FILE}" fi if [ -n "${ZBX_DB_CERT_FILE}" ]; then result="${result} --ssl-cert=${ZBX_DB_CERT_FILE}" fi fi echo $result } check_db_connect() { echo "********************" echo "* DB_SERVER_HOST: ${DB_SERVER_HOST}" echo "* DB_SERVER_PORT: ${DB_SERVER_PORT}" if [ -n "${DB_SERVER_SOCKET}" ]; then echo "* DB_SERVER_SOCKET: ${DB_SERVER_SOCKET}" fi echo "* DB_SERVER_DBNAME: ${DB_SERVER_DBNAME}" if [ "${DEBUG_MODE,,}" == "true" ]; then echo "* DB_SERVER_ZBX_USER: ${DB_SERVER_ZBX_USER}" echo "* DB_SERVER_ZBX_PASS: ${DB_SERVER_ZBX_PASS}" fi echo "********************" WAIT_TIMEOUT=5 ssl_opts="$(db_tls_params)" export MYSQL_PWD="${DB_SERVER_ZBX_PASS}" while [ ! "$(mysqladmin ping $mysql_connect_args -u ${DB_SERVER_ZBX_USER} \ --silent --connect_timeout=10 $ssl_opts)" ]; do echo "**** MySQL server is not available. Waiting $WAIT_TIMEOUT seconds..." sleep $WAIT_TIMEOUT done unset MYSQL_PWD } prepare_web_server() { APACHE_SITES_DIR=/etc/apache2/conf.d echo "** Adding Zabbix virtual host (HTTP)" if [ -f "$ZABBIX_ETC_DIR/apache.conf" ]; then ln -sfT "$ZABBIX_ETC_DIR/apache.conf" "$APACHE_SITES_DIR/zabbix.conf" else echo "**** Impossible to enable HTTP virtual host" fi if [ -f "/etc/ssl/apache2/ssl.crt" ] && [ -f "/etc/ssl/apache2/ssl.key" ]; then echo "** Adding Zabbix virtual host (HTTPS)" if [ -f "$ZABBIX_ETC_DIR/apache_ssl.conf" ]; then ln -sfT "$ZABBIX_ETC_DIR/apache_ssl.conf" "$APACHE_SITES_DIR/zabbix_ssl.conf" else echo "**** Impossible to enable HTTPS virtual host" fi else echo "**** Impossible to enable SSL support for Apache2. Certificates are missed." fi } prepare_zbx_web_config() { echo "** Preparing Zabbix frontend configuration file" : ${ZBX_DENY_GUI_ACCESS:="false"} export ZBX_DENY_GUI_ACCESS=${ZBX_DENY_GUI_ACCESS,,} export ZBX_GUI_ACCESS_IP_RANGE=${ZBX_GUI_ACCESS_IP_RANGE:-"['127.0.0.1']"} export ZBX_GUI_WARNING_MSG=${ZBX_GUI_WARNING_MSG:-"Zabbix is under maintenance."} export ZBX_MAXEXECUTIONTIME=${ZBX_MAXEXECUTIONTIME:-"600"} export ZBX_MEMORYLIMIT=${ZBX_MEMORYLIMIT:-"128M"} export ZBX_POSTMAXSIZE=${ZBX_POSTMAXSIZE:-"16M"} export ZBX_UPLOADMAXFILESIZE=${ZBX_UPLOADMAXFILESIZE:-"2M"} export ZBX_MAXINPUTTIME=${ZBX_MAXINPUTTIME:-"300"} export PHP_TZ=${PHP_TZ} export DB_SERVER_TYPE="MYSQL" export DB_SERVER_HOST=${DB_SERVER_HOST} export DB_SERVER_PORT=${DB_SERVER_PORT} export DB_SERVER_DBNAME=${DB_SERVER_DBNAME} export DB_SERVER_SCHEMA=${DB_SERVER_SCHEMA} export DB_SERVER_USER=${DB_SERVER_ZBX_USER} export DB_SERVER_PASS=${DB_SERVER_ZBX_PASS} export ZBX_SERVER_HOST=${ZBX_SERVER_HOST} export ZBX_SERVER_PORT=${ZBX_SERVER_PORT} export ZBX_SERVER_NAME=${ZBX_SERVER_NAME} : ${ZBX_DB_ENCRYPTION:="false"} export ZBX_DB_ENCRYPTION=${ZBX_DB_ENCRYPTION,,} export ZBX_DB_KEY_FILE=${ZBX_DB_KEY_FILE} export ZBX_DB_CERT_FILE=${ZBX_DB_CERT_FILE} export ZBX_DB_CA_FILE=${ZBX_DB_CA_FILE} : ${ZBX_DB_VERIFY_HOST:="false"} export ZBX_DB_VERIFY_HOST=${ZBX_DB_VERIFY_HOST,,} : ${DB_DOUBLE_IEEE754:="true"} export DB_DOUBLE_IEEE754=${DB_DOUBLE_IEEE754,,} export ZBX_HISTORYSTORAGEURL=${ZBX_HISTORYSTORAGEURL} export ZBX_HISTORYSTORAGETYPES=${ZBX_HISTORYSTORAGETYPES:-"[]"} export ZBX_SSO_SETTINGS=${ZBX_SSO_SETTINGS:-""} if [ -n "${ZBX_SESSION_NAME}" ]; then cp "$ZABBIX_WWW_ROOT/include/defines.inc.php" "/tmp/defines.inc.php_tmp" sed "/ZBX_SESSION_NAME/s/'[^']*'/'${ZBX_SESSION_NAME}'/2" "/tmp/defines.inc.php_tmp" > "$ZABBIX_WWW_ROOT/include/defines.inc.php" rm -f "/tmp/defines.inc.php_tmp" fi : ${HTTP_INDEX_FILE:="index.php"} sed -i \ -e "s/{HTTP_INDEX_FILE}/${HTTP_INDEX_FILE}/g" \ "$ZABBIX_ETC_DIR/apache.conf" if [ -f "$ZABBIX_ETC_DIR/apache_ssl.conf" ]; then sed -i \ -e "s/{HTTP_INDEX_FILE}/${HTTP_INDEX_FILE}/g" \ "$ZABBIX_ETC_DIR/apache_ssl.conf" fi : ${ENABLE_WEB_ACCESS_LOG:="true"} if [ "${ENABLE_WEB_ACCESS_LOG,,}" == "false" ]; then sed -ri \ -e 's!^(\s*CustomLog)\s+\S+!\1 /dev/null!g' \ "/etc/apache2/httpd.conf" fi } ################################################# echo "** Deploying Zabbix web-interface (Apache) with MySQL database" check_variables check_db_connect prepare_web_server prepare_zbx_web_config echo "########################################################" if [ "$1" != "" ]; then echo "** Executing '$@'" exec "$@" elif [ -f "/usr/sbin/httpd" ]; then echo "** Executing HTTPD" exec /usr/sbin/httpd -D FOREGROUND else echo "Unknown instructions. Exiting..." exit 1 fi #################################################