312 lines
9.6 KiB
Nix
312 lines
9.6 KiB
Nix
/* # use this nginx configuration
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# to send data to these inputs
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log_format graylog2_json escape=json '{ "timestamp": "$time_iso8601", '
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'"facility": "nginx", '
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'"src_addr": "$remote_addr", '
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'"body_bytes_sent": $body_bytes_sent, '
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'"request_time": $request_time, '
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'"response_status": $status, '
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'"request": "$request", '
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'"request_method": "$request_method", '
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'"host": "$host",'
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'"upstream_cache_status": "$upstream_cache_status",'
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'"upstream_addr": "$upstream_addr",'
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'"http_x_forwarded_for": "$http_x_forwarded_for",'
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'"http_referrer": "$http_referer", '
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'"http_user_agent": "$http_user_agent" }';
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access_log syslog:server=${access_log_input} graylog2_json;
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error_log syslog:server=${error_log_input};
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*/
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with builtins; {
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resource = {
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graylog_input = {
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nginx_access_logs = {
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title = "nginx access log";
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# https://javadoc.io/doc/org.graylog2/graylog2-inputs/latest/index.html
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type = "org.graylog2.inputs.syslog.udp.SyslogUDPInput";
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global = true;
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attributes = toJSON ({
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allow_override_date = true;
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bind_address = "0.0.0.0";
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expand_structured_data = false;
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force_rdns = false;
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number_worker_threads = 4;
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port = 12304;
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recv_buffer_size = 1048576;
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store_full_message = false;
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});
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};
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nginx_error_logs = {
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title = "nginx error log";
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# https://javadoc.io/doc/org.graylog2/graylog2-inputs/latest/index.html
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type = "org.graylog2.inputs.syslog.udp.SyslogUDPInput";
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global = true;
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attributes = toJSON ({
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allow_override_date = true;
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bind_address = "0.0.0.0";
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expand_structured_data = false;
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force_rdns = false;
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number_worker_threads = 4;
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port = 12305;
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recv_buffer_size = 1048576;
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store_full_message = false;
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});
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};
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};
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graylog_extractor = {
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# nginx error
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nginx_error_timestamp = {
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input_id = "\${graylog_input.nginx_error_logs.id}";
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order = 0;
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title = "Timestamp";
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type = "regex";
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extractor_config = toJSON ({
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regex_value =
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"^.*:\\s(\\d\\d\\d\\d/\\d\\d/\\d\\d\\s\\d\\d:\\d\\d:\\d\\d)\\s.*$";
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});
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target_field = "timestamp";
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source_field = "message";
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cursor_strategy = "copy";
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condition_type = "none";
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converters = {
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config = toJSON ({ date_format = "yyyy/MM/dd HH:mm:ss "; });
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type = "date";
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};
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};
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nginx_error_server = {
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input_id = "\${graylog_input.nginx_error_logs.id}";
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type = "regex";
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source_field = "message";
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cursor_strategy = "copy";
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condition_type = "string";
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condition_value = "server";
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extractor_config = toJSON ({ regex_value = "server:\\s(.+?)(,|$)"; });
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order = 1;
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target_field = "server";
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title = "server";
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};
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nginx_error_remote_addr = {
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input_id = "\${graylog_input.nginx_error_logs.id}";
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type = "regex";
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source_field = "message";
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cursor_strategy = "copy";
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condition_type = "string";
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condition_value = "client";
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extractor_config = toJSON ({ regex_value = "client:\\s(.+?)(,|$)"; });
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order = 2;
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target_field = "remote_addr";
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title = "remote_addr/client";
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};
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nginx_error_host = {
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input_id = "\${graylog_input.nginx_error_logs.id}";
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type = "regex";
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source_field = "message";
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cursor_strategy = "copy";
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condition_type = "string";
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condition_value = "host";
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extractor_config = toJSON ({ regex_value = ''host:\s"(.+?)"(,|$)''; });
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order = 3;
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target_field = "host";
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title = "host";
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};
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nginx_error_request_path = {
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input_id = "\${graylog_input.nginx_error_logs.id}";
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type = "regex";
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source_field = "message";
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cursor_strategy = "copy";
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condition_type = "string";
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condition_value = "request";
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extractor_config =
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toJSON ({ regex_value = ''request:\s"(.+?)"(,|$)''; });
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order = 4;
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target_field = "request_path";
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title = "request_path/request";
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};
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nginx_error_request_verb = {
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input_id = "\${graylog_input.nginx_error_logs.id}";
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type = "regex";
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source_field = "message";
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cursor_strategy = "copy";
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condition_type = "string";
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condition_value = "request";
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extractor_config = toJSON ({
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regex_value = ''
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request:\s"(GET|HEAD|POST|PUT|DELETE|TRACE|OPTIONS|CONNECT|PATCH).+"(,|$)'';
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});
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order = 5;
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target_field = "request_verb";
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title = "request_verb";
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};
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# nginx access
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nginx_access_json_from_syslog = {
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input_id = "\${graylog_input.nginx_access_logs.id}";
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title = "Get JSON from syslog message";
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type = "regex";
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cursor_strategy = "copy";
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condition_type = "none";
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source_field = "message";
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target_field = "json";
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order = 0;
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extractor_config = toJSON ({ regex_value = "nginx:\\s+(.*)"; });
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};
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nginx_access_extract_json = {
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input_id = "\${graylog_input.nginx_access_logs.id}";
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title = "Extract JSON fields";
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order = 1;
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source_field = "json";
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type = "json";
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cursor_strategy = "copy";
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condition_type = "none";
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extractor_config = toJSON ({
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flatten = true;
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list_separator = ", ";
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kv_separator = "=";
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key_prefix = "";
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key_separator = "_";
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replace_key_whitespace = false;
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key_whitespace_replacement = "_";
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});
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};
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nginx_access_empty_json = {
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input_id = "\${graylog_input.nginx_access_logs.id}";
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order = 2;
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title = "Empty JSON field";
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type = "regex_replace";
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extractor_config = toJSON ({
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regex = ".*";
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replacement = "-";
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});
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target_field = "json";
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source_field = "json";
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cursor_strategy = "copy";
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condition_type = "none";
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};
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nginx_access_reduce_message = {
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input_id = "\${graylog_input.nginx_access_logs.id}";
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order = 3;
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title = "Reduced message to path";
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type = "regex_replace";
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extractor_config = toJSON ({
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regex = ''.*request": "(.*?)".*'';
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replacement = "$1";
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});
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target_field = "message";
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source_field = "message";
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cursor_strategy = "copy";
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condition_type = "none";
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};
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};
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graylog_input_static_fields = {
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nginx_access_logs = {
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input_id = "\${graylog_input.nginx_access_logs.id}";
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fields = {
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from_nginx = true;
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nginx_error = false;
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nginx_access = true;
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};
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};
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nginx_error_logs = {
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input_id = "\${graylog_input.nginx_error_logs.id}";
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fields = {
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from_nginx = true;
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nginx_error = true;
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nginx_access = false;
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};
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};
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};
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graylog_stream = {
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nginx5xx = {
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title = "nginx 5xx";
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description = "all requests answered with a 5xx response";
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index_set_id = "\${graylog_index_set.default.id}";
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disabled = false;
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matching_type = "AND";
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};
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nginx4xx = {
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title = "nginx 4xx";
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description = "all requests answered with a 4xx response";
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index_set_id = "\${graylog_index_set.default.id}";
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disabled = false;
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matching_type = "AND";
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};
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nginx2xx = {
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title = "nginx 2xx";
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description = "all requests answered with a 2xx response";
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index_set_id = "\${graylog_index_set.default.id}";
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disabled = false;
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matching_type = "AND";
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};
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nginx_access = {
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title = "nginx access";
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description = "all requests";
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index_set_id = "\${graylog_index_set.default.id}";
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disabled = false;
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matching_type = "AND";
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};
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nginx_error = {
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title = "nginx error";
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description = "all errors";
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index_set_id = "\${graylog_index_set.default.id}";
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disabled = false;
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matching_type = "AND";
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};
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};
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graylog_stream_rule =
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let
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nq_stream_rule = field: value: stream_id: {
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inherit field value stream_id;
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type = 1;
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inverted = true;
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};
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eq_stream_rule = field: value: stream_id: {
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inherit field value stream_id;
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type = 1;
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inverted = false;
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};
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gt_stream_rule = field: value: stream_id: {
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inherit field value stream_id;
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type = 3;
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inverted = false;
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};
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lt_stream_rule = field: value: stream_id: {
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inherit field value stream_id;
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type = 4;
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inverted = false;
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};
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between = min: max: stream_id: {
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"is_nginx_access_${min}_${max}" =
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(eq_stream_rule "nginx_access" true stream_id);
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"nginx_above${min}" = (gt_stream_rule "response_status" min stream_id);
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"nginx_below${max}" = (lt_stream_rule "response_status" max stream_id);
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};
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in
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(between "499" "600" "\${graylog_stream.nginx5xx.id}")
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// (between "399" "500" "\${graylog_stream.nginx4xx.id}")
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// (between "199" "300" "\${graylog_stream.nginx2xx.id}") // {
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is_nginx_access = (eq_stream_rule "nginx_access" true
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"\${graylog_stream.nginx_access.id}");
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is_nginx_error =
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(eq_stream_rule "nginx_error" true "\${graylog_stream.nginx_error.id}");
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};
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};
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}
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