mirror of
https://github.com/zabbix/zabbix-docker.git
synced 2024-11-24 16:54:13 +01:00
287 lines
8.7 KiB
Bash
Executable File
287 lines
8.7 KiB
Bash
Executable File
#!/bin/bash
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set -o pipefail
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set +e
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# Script trace mode
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if [ "${DEBUG_MODE}" == "true" ]; then
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set -o xtrace
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fi
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# Default Zabbix installation name
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# Used only by Zabbix web-interface
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ZBX_SERVER_NAME=${ZBX_SERVER_NAME:-"Zabbix docker"}
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# Default Zabbix server host
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ZBX_SERVER_HOST=${ZBX_SERVER_HOST:-"zabbix-server"}
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# Default Zabbix server port number
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ZBX_SERVER_PORT=${ZBX_SERVER_PORT:-"10051"}
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# Default timezone for web interface
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PHP_TZ=${PHP_TZ:-"Europe/Riga"}
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# Default directories
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# User 'zabbix' home directory
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ZABBIX_USER_HOME_DIR="/var/lib/zabbix"
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# Configuration files directory
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ZABBIX_ETC_DIR="/etc/zabbix"
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# Web interface www-root directory
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ZBX_FRONTEND_PATH="/usr/share/zabbix"
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# usage: file_env VAR [DEFAULT]
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# as example: file_env 'MYSQL_PASSWORD' 'zabbix'
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# (will allow for "$MYSQL_PASSWORD_FILE" to fill in the value of "$MYSQL_PASSWORD" from a file)
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# unsets the VAR_FILE afterwards and just leaving VAR
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file_env() {
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local var="$1"
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local fileVar="${var}_FILE"
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local defaultValue="${2:-}"
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if [ "${!var:-}" ] && [ "${!fileVar:-}" ]; then
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echo "**** Both variables $var and $fileVar are set (but are exclusive)"
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exit 1
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fi
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local val="$defaultValue"
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if [ "${!var:-}" ]; then
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val="${!var}"
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echo "** Using ${var} variable from ENV"
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elif [ "${!fileVar:-}" ]; then
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if [ ! -f "${!fileVar}" ]; then
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echo "**** Secret file \"${!fileVar}\" is not found"
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exit 1
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fi
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val="$(< "${!fileVar}")"
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echo "** Using ${var} variable from secret file"
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fi
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export "$var"="$val"
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unset "$fileVar"
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}
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escape_spec_char() {
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local var_value=$1
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var_value="${var_value//\\/\\\\}"
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var_value="${var_value//[$'\n']/}"
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var_value="${var_value//\//\\/}"
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var_value="${var_value//./\\.}"
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var_value="${var_value//\*/\\*}"
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var_value="${var_value//^/\\^}"
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var_value="${var_value//\$/\\\$}"
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var_value="${var_value//\&/\\\&}"
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var_value="${var_value//\[/\\[}"
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var_value="${var_value//\]/\\]}"
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echo "$var_value"
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}
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update_config_var() {
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local config_path=$1
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local var_name=$2
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local var_value=$3
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local is_multiple=$4
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if [ ! -f "$config_path" ]; then
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echo "**** Configuration file '$config_path' does not exist"
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return
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fi
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echo -n "** Updating '$config_path' parameter \"$var_name\": '$var_value'... "
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# Remove configuration parameter definition in case of unset parameter value
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if [ -z "$var_value" ]; then
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sed -i -e "/^$var_name=/d" "$config_path"
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echo "removed"
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return
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fi
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# Remove value from configuration parameter in case of double quoted parameter value
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if [ "$var_value" == '""' ]; then
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sed -i -e "/^$var_name=/s/=.*/=/" "$config_path"
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echo "undefined"
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return
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fi
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# Escaping characters in parameter value and name
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var_value=$(escape_spec_char "$var_value")
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var_name=$(escape_spec_char "$var_name")
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if [ "$(grep -E "^$var_name=" $config_path)" ] && [ "$is_multiple" != "true" ]; then
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sed -i -e "/^$var_name=/s/=.*/=$var_value/" "$config_path"
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echo "updated"
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elif [ "$(grep -Ec "^# $var_name=" $config_path)" -gt 1 ]; then
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sed -i -e "/^[#;] $var_name=$/i\\$var_name=$var_value" "$config_path"
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echo "added first occurrence"
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else
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sed -i -e "/^[#;] $var_name=/s/.*/&\n$var_name=$var_value/" "$config_path"
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echo "added"
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fi
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}
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update_config_multiple_var() {
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local config_path=$1
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local var_name=$2
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local var_value=$3
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var_value="${var_value%\"}"
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var_value="${var_value#\"}"
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local IFS=,
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local OPT_LIST=($var_value)
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for value in "${OPT_LIST[@]}"; do
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update_config_var $config_path $var_name $value true
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done
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}
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# Check prerequisites for PostgreSQL database
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check_variables() {
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file_env POSTGRES_USER
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file_env POSTGRES_PASSWORD
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: ${DB_SERVER_HOST:="postgres-server"}
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: ${DB_SERVER_PORT:="5432"}
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: ${CREATE_ZBX_DB_USER:="false"}
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DB_SERVER_ROOT_USER=${POSTGRES_USER:-"postgres"}
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DB_SERVER_ROOT_PASS=${POSTGRES_PASSWORD:-""}
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DB_SERVER_ZBX_USER=${POSTGRES_USER:-"zabbix"}
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DB_SERVER_ZBX_PASS=${POSTGRES_PASSWORD:-"zabbix"}
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: ${DB_SERVER_SCHEMA:="public"}
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DB_SERVER_DBNAME=${POSTGRES_DB:-"zabbix"}
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}
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check_db_connect() {
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echo "********************"
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echo "* DB_SERVER_HOST: ${DB_SERVER_HOST}"
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echo "* DB_SERVER_PORT: ${DB_SERVER_PORT}"
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echo "* DB_SERVER_DBNAME: ${DB_SERVER_DBNAME}"
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echo "* DB_SERVER_SCHEMA: ${DB_SERVER_SCHEMA}"
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if [ "${DEBUG_MODE}" == "true" ]; then
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if [ "${USE_DB_ROOT_USER}" == "true" ]; then
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echo "* DB_SERVER_ROOT_USER: ${DB_SERVER_ROOT_USER}"
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echo "* DB_SERVER_ROOT_PASS: ${DB_SERVER_ROOT_PASS}"
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fi
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echo "* DB_SERVER_ZBX_USER: ${DB_SERVER_ZBX_USER}"
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echo "* DB_SERVER_ZBX_PASS: ${DB_SERVER_ZBX_PASS}"
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fi
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echo "********************"
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if [ "${USE_DB_ROOT_USER}" != "true" ]; then
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DB_SERVER_ROOT_USER=${DB_SERVER_ZBX_USER}
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DB_SERVER_ROOT_PASS=${DB_SERVER_ZBX_PASS}
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fi
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if [ -n "${DB_SERVER_ZBX_PASS}" ]; then
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export PGPASSWORD="${DB_SERVER_ZBX_PASS}"
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fi
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WAIT_TIMEOUT=5
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if [ -n "${DB_SERVER_SCHEMA}" ]; then
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PGOPTIONS="--search_path=${DB_SERVER_SCHEMA}"
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export PGOPTIONS
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fi
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while [ ! "$(psql -h ${DB_SERVER_HOST} -p ${DB_SERVER_PORT} -U ${DB_SERVER_ROOT_USER} -d ${DB_SERVER_DBNAME} -l -q 2>/dev/null)" ]; do
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echo "**** PostgreSQL server is not available. Waiting $WAIT_TIMEOUT seconds..."
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sleep $WAIT_TIMEOUT
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done
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unset PGPASSWORD
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unset PGOPTIONS
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}
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prepare_web_server() {
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NGINX_CONFD_DIR="/etc/nginx/conf.d"
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NGINX_SSL_CONFIG="/etc/ssl/nginx"
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echo "** Adding Zabbix virtual host (HTTP)"
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if [ -f "$ZABBIX_ETC_DIR/nginx.conf" ]; then
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ln -s "$ZABBIX_ETC_DIR/nginx.conf" "$NGINX_CONFD_DIR"
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else
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echo "**** Impossible to enable HTTP virtual host"
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fi
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if [ -f "$NGINX_SSL_CONFIG/ssl.crt" ] && [ -f "$NGINX_SSL_CONFIG/ssl.key" ] && [ -f "$NGINX_SSL_CONFIG/dhparam.pem" ]; then
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echo "** Enable SSL support for Nginx"
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if [ -f "$ZABBIX_ETC_DIR/nginx_ssl.conf" ]; then
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ln -s "$ZABBIX_ETC_DIR/nginx_ssl.conf" "$NGINX_CONFD_DIR"
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else
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echo "**** Impossible to enable HTTPS virtual host"
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fi
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else
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echo "**** Impossible to enable SSL support for Nginx. Certificates are missed."
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fi
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}
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prepare_zbx_web_config() {
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local server_name=""
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echo "** Preparing Zabbix frontend configuration file"
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ZBX_WEB_CONFIG="$ZABBIX_ETC_DIR/web/zabbix.conf.php"
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PHP_CONFIG_FILE="/etc/php7/php-fpm.d/zabbix.conf"
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update_config_var "$PHP_CONFIG_FILE" "php_value[max_execution_time]" "${ZBX_MAXEXECUTIONTIME:-"600"}"
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update_config_var "$PHP_CONFIG_FILE" "php_value[memory_limit]" "${ZBX_MEMORYLIMIT:-"128M"}"
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update_config_var "$PHP_CONFIG_FILE" "php_value[post_max_size]" "${ZBX_POSTMAXSIZE:-"16M"}"
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update_config_var "$PHP_CONFIG_FILE" "php_value[upload_max_filesize]" "${ZBX_UPLOADMAXFILESIZE:-"2M"}"
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update_config_var "$PHP_CONFIG_FILE" "php_value[max_input_time]" "${ZBX_MAXINPUTTIME:-"300"}"
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update_config_var "$PHP_CONFIG_FILE" "php_value[date.timezone]" "${PHP_TZ}"
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if [ "$(id -u)" == '0' ]; then
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echo "user = zabbix" >> "$PHP_CONFIG_FILE"
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echo "group = zabbix" >> "$PHP_CONFIG_FILE"
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echo "listen.owner = nginx" >> "$PHP_CONFIG_FILE"
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echo "listen.group = nginx" >> "$PHP_CONFIG_FILE"
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fi
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# Escaping characters in parameter value
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server_name=$(escape_spec_char "${ZBX_SERVER_NAME}")
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server_user=$(escape_spec_char "${DB_SERVER_ZBX_USER}")
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server_pass=$(escape_spec_char "${DB_SERVER_ZBX_PASS}")
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sed -i \
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-e "s/{DB_SERVER_HOST}/${DB_SERVER_HOST}/g" \
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-e "s/{DB_SERVER_PORT}/${DB_SERVER_PORT}/g" \
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-e "s/{DB_SERVER_DBNAME}/${DB_SERVER_DBNAME}/g" \
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-e "s/{DB_SERVER_SCHEMA}/${DB_SERVER_SCHEMA}/g" \
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-e "s/{DB_SERVER_USER}/$server_user/g" \
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-e "s/{DB_SERVER_PASS}/$server_pass/g" \
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-e "s/{ZBX_SERVER_HOST}/${ZBX_SERVER_HOST}/g" \
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-e "s/{ZBX_SERVER_PORT}/${ZBX_SERVER_PORT}/g" \
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-e "s/{ZBX_SERVER_NAME}/$server_name/g" \
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"$ZBX_WEB_CONFIG"
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}
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#################################################
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echo "** Deploying Zabbix web-interface (Nginx) with PostgreSQL database"
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check_variables
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check_db_connect
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prepare_web_server
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prepare_zbx_web_config
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echo "########################################################"
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if [ "$1" != "" ]; then
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echo "** Executing '$@'"
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exec "$@"
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elif [ -f "/usr/bin/supervisord" ]; then
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echo "** Executing supervisord"
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exec /usr/bin/supervisord -c /etc/supervisor/supervisord.conf
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else
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echo "Unknown instructions. Exiting..."
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exit 1
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fi
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#################################################
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