id summary reporter owner description type status priority milestone component version resolution keywords cc uname nginx_version 1540 Support for '-' (dash) in syslog TAG field sgub@… "An nginx.conf contains dash in syslog tag: {{{ error_log syslog:local6:info:127.0.0.1:514:XXX-nginx-error-YYY; # nginx -c /etc/nginx/nginx.conf -t nginx: [emerg] syslog ""tag"" only allows alphanumeric characters and underscore in /etc/nginx/nginx.conf:8 }}} The syslog TAG field is defined in RFC3164 https://tools.ietf.org/html/rfc3164 as ""a string of ABNF alphanumeric characters that MUST NOT exceed 32 characters."", and the ABNF naming rule is defined in RFC2234 https://tools.ietf.org/html/rfc2234 as ""a sequence of characters, beginning with an alphabetic character, and followed by a combination of alphabetics, digits and **hyphens (dashes)**."" While the nginx syslog module does not include '-' in the check logic https://trac.nginx.org/nginx/browser/nginx/src/core/ngx_syslog.c#L185 , it returns NGX_CONF_ERROR. I modified the TAG checking logic, and it works, in combination with rsyslog (which is comply with RFC3164 specification): {{{#!c if ((c < '0' && c != '-') || (c > '9' && c < 'a' && c != '_') || c > 'z') { ... } }}}" defect closed minor other 1.13.x invalid syslog tag Linux mirrors 4.9.2-20180402.mweibo.el7.centos.x86_64 #1 SMP Mon Apr 2 15:58:57 CST 2018 x86_64 x86_64 x86_64 GNU/Linux "nginx version: nginx/1.13.1 built by gcc 4.8.5 20150623 (Red Hat 4.8.5-4) (GCC) built with OpenSSL 1.0.2j-fips 26 Sep 2016 (running with OpenSSL 1.0.2k-fips 26 Jan 2017) TLS SNI support enabled configure arguments: --prefix=/usr/share/nginx --sbin-path=/usr/sbin/nginx --modules-path=/usr/lib64/nginx/modules --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --http-client-body-temp-path=/var/lib/nginx/tmp/client_body --http-proxy-temp-path=/var/lib/nginx/tmp/proxy --http-fastcgi-temp-path=/var/lib/nginx/tmp/fastcgi --http-uwsgi-temp-path=/var/lib/nginx/tmp/uwsgi --http-scgi-temp-path=/var/lib/nginx/tmp/scgi --pid-path=/run/nginx.pid --lock-path=/run/lock/subsys/nginx --user=nginx --group=nginx --with-file-aio --with-ipv6 --with-http_ssl_module --with-http_v2_module --with-http_realip_module --with-http_addition_module --with-http_xslt_module=dynamic --with-http_image_filter_module=dynamic --with-http_geoip_module=dynamic --with-http_sub_module --with-http_dav_module --with-http_flv_module --with-http_mp4_module --with-http_gunzip_module --with-http_gzip_static_module --with-syslog --with-http_random_index_module --with-http_secure_link_module --with-http_degradation_module --with-http_slice_module --with-http_stub_status_module --with-http_perl_module=dynamic --with-mail=dynamic --with-mail_ssl_module --with-pcre --with-pcre-jit --with-stream --with-stream_ssl_module --with-google_perftools_module --with-debug --with-cc-opt='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -m64 -mtune=generic' --with-ld-opt='-Wl,-z,relro -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -Wl,-E'"