nginxでrequest_bodyの内容によって挙動を変えるような処理をしたかった時に、lua-nginx-moduleを導入した際のメモ。
この記事は以下環境を利用しました。
docker hub 公式のnginx
( https://hub.docker.com/_/nginx/ )
1.15.8-alpine tagのDockerfile
( https://github.com/nginxinc/docker-nginx/blob/2364fdc54af554d28ef95b7be381677d10987986/mainline/alpine/Dockerfile )
lua-nginx-modul導入の大枠の流れとしては以下の手順を参考にして進めています。
https://github.com/openresty/lua-nginx-module#installation
http://luajit.org/install.html
https://github.com/simplresty/ngx_devel_kit#usage-for-users
主な変更、差分
#####インストールバージョンと環境変数の指定
ENV NGINX_VERSION 1.15.8
+ ENV LUAJIT2_VERSION 2.1-20190131
+ ENV NGX_DEVEL_KIT_VERSION 0.3.1rc1
+ ENV LUA_NGINX_MODULE_VERSION 0.10.14rc5
+
+ ENV LUAJIT_LIB /usr/local/lib
+ ENV LUAJIT_INC /usr/local/include/luajit-2.1
+
RUN GPG_KEYS=B0F4253373F8F6F510D42178520A9993A1C052F8 \
#####各モジュール追加のためのコンフィグオプション部分
--with-http_v2_module \
+ --with-ld-opt='-Wl,-rpath,/usr/local/lib' \
+ --add-module=/usr/src/ngx_devel_kit-$NGX_DEVEL_KIT_VERSION \
+ --add-module=/usr/src/lua-nginx-module-$LUA_NGINX_MODULE_VERSION \
" \
#####モジュールのソースコードダウンロード
&& curl -fSL https://nginx.org/download/nginx-$NGINX_VERSION.tar.gz.asc -o nginx.tar.gz.asc \
+ && curl -fSL https://github.com/openresty/luajit2/archive/v$LUAJIT2_VERSION.tar.gz -o luajit2.tar.gz \
+ && curl -fSL https://github.com/simplresty/ngx_devel_kit/archive/v$NGX_DEVEL_KIT_VERSION.tar.gz -o ngx_devel_kit.tar.gz \
+ && curl -fSL https://github.com/openresty/lua-nginx-module/archive/v$LUA_NGINX_MODULE_VERSION.tar.gz -o lua-nginx-module.tar.gz \
&& export GNUPGHOME="$(mktemp -d)" \
#####ソースコードの展開とluajit2のインストール、利用後ファイルの削除
&& tar -zxC /usr/src -f nginx.tar.gz \
! && tar -zxC /usr/src -f luajit2.tar.gz \
! && tar -zxC /usr/src -f ngx_devel_kit.tar.gz \
! && tar -zxC /usr/src -f lua-nginx-module.tar.gz \
! && rm nginx.tar.gz luajit2.tar.gz ngx_devel_kit.tar.gz lua-nginx-module.tar.gz \
! && cd /usr/src/luajit2-$LUAJIT2_VERSION \
! && make \
! && make install \
&& cd /usr/src/nginx-$NGINX_VERSION \
#####利用後ディレクトリの削除
&& strip /usr/lib/nginx/modules/*.so \
! && rm -rf /usr/src/nginx-$NGINX_VERSION /usr/src/luajit2-$LUAJIT2_VERSION /usr/src/ngx_devel_kit-$NGX_DEVEL_KIT_VERSION /usr/src/lua-nginx-module-$LUA_NGINX_MODULE_VERSION \
\
#####挙動に必要なライブラリの追加
&& ln -sf /dev/stderr /var/log/nginx/error.log
+ RUN apk add --no-cache libgcc
+
COPY nginx.conf /etc/nginx/nginx.conf
つまずいた部分
つまずいた部分として、上記のようにlibgccを入れておかないと起動時に以下エラーで落ちてしまった点。
Error loading shared library libgcc_s.so.1: No such file or directory (needed by /usr/local/lib/libluajit-5.1.so.2)
Error relocating /usr/local/lib/libluajit-5.1.so.2: _Unwind_DeleteException: symbol not found
Error relocating /usr/local/lib/libluajit-5.1.so.2: _Unwind_SetGR: symbol not found
Error relocating /usr/local/lib/libluajit-5.1.so.2: _Unwind_SetIP: symbol not found
Error relocating /usr/local/lib/libluajit-5.1.so.2: _Unwind_GetCFA: symbol not found
Error relocating /usr/local/lib/libluajit-5.1.so.2: _Unwind_RaiseException: symbol not found
元々のDockerfileの流れだとコンパイル時に使っていたパッケージを削除してしまうので、lua-nginx-module導入に関連して必要ライブラリが参照できなくてエラーになっていました。
OpenRestyの方でも似たような議論が昔あったのを参考に、libgccを追加するようにしてみました。
https://github.com/openresty/docker-openresty/issues/5
Dockerfile全体
FROM alpine:3.9
ENV NGINX_VERSION 1.15.8
ENV LUAJIT2_VERSION 2.1-20190131
ENV NGX_DEVEL_KIT_VERSION 0.3.1rc1
ENV LUA_NGINX_MODULE_VERSION 0.10.14rc5
ENV LUAJIT_LIB /usr/local/lib
ENV LUAJIT_INC /usr/local/include/luajit-2.1
RUN GPG_KEYS=B0F4253373F8F6F510D42178520A9993A1C052F8 \
&& CONFIG="\
--prefix=/etc/nginx \
--sbin-path=/usr/sbin/nginx \
--modules-path=/usr/lib/nginx/modules \
--conf-path=/etc/nginx/nginx.conf \
--error-log-path=/var/log/nginx/error.log \
--http-log-path=/var/log/nginx/access.log \
--pid-path=/var/run/nginx.pid \
--lock-path=/var/run/nginx.lock \
--http-client-body-temp-path=/var/cache/nginx/client_temp \
--http-proxy-temp-path=/var/cache/nginx/proxy_temp \
--http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp \
--http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp \
--http-scgi-temp-path=/var/cache/nginx/scgi_temp \
--user=nginx \
--group=nginx \
--with-http_ssl_module \
--with-http_realip_module \
--with-http_addition_module \
--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-http_random_index_module \
--with-http_secure_link_module \
--with-http_stub_status_module \
--with-http_auth_request_module \
--with-http_xslt_module=dynamic \
--with-http_image_filter_module=dynamic \
--with-http_geoip_module=dynamic \
--with-threads \
--with-stream \
--with-stream_ssl_module \
--with-stream_ssl_preread_module \
--with-stream_realip_module \
--with-stream_geoip_module=dynamic \
--with-http_slice_module \
--with-mail \
--with-mail_ssl_module \
--with-compat \
--with-file-aio \
--with-http_v2_module \
--with-ld-opt='-Wl,-rpath,/usr/local/lib' \
--add-module=/usr/src/ngx_devel_kit-$NGX_DEVEL_KIT_VERSION \
--add-module=/usr/src/lua-nginx-module-$LUA_NGINX_MODULE_VERSION \
" \
&& addgroup -S nginx \
&& adduser -D -S -h /var/cache/nginx -s /sbin/nologin -G nginx nginx \
&& apk add --no-cache --virtual .build-deps \
gcc \
libc-dev \
make \
openssl-dev \
pcre-dev \
zlib-dev \
linux-headers \
curl \
gnupg1 \
libxslt-dev \
gd-dev \
geoip-dev \
&& curl -fSL https://nginx.org/download/nginx-$NGINX_VERSION.tar.gz -o nginx.tar.gz \
&& curl -fSL https://nginx.org/download/nginx-$NGINX_VERSION.tar.gz.asc -o nginx.tar.gz.asc \
&& curl -fSL https://github.com/openresty/luajit2/archive/v$LUAJIT2_VERSION.tar.gz -o luajit2.tar.gz \
&& curl -fSL https://github.com/simplresty/ngx_devel_kit/archive/v$NGX_DEVEL_KIT_VERSION.tar.gz -o ngx_devel_kit.tar.gz \
&& curl -fSL https://github.com/openresty/lua-nginx-module/archive/v$LUA_NGINX_MODULE_VERSION.tar.gz -o lua-nginx-module.tar.gz \
&& export GNUPGHOME="$(mktemp -d)" \
&& found=''; \
for server in \
ha.pool.sks-keyservers.net \
hkp://keyserver.ubuntu.com:80 \
hkp://p80.pool.sks-keyservers.net:80 \
pgp.mit.edu \
; do \
echo "Fetching GPG key $GPG_KEYS from $server"; \
gpg --keyserver "$server" --keyserver-options timeout=10 --recv-keys "$GPG_KEYS" && found=yes && break; \
done; \
test -z "$found" && echo >&2 "error: failed to fetch GPG key $GPG_KEYS" && exit 1; \
gpg --batch --verify nginx.tar.gz.asc nginx.tar.gz \
&& rm -rf "$GNUPGHOME" nginx.tar.gz.asc \
&& mkdir -p /usr/src \
&& tar -zxC /usr/src -f nginx.tar.gz \
&& tar -zxC /usr/src -f luajit2.tar.gz \
&& tar -zxC /usr/src -f ngx_devel_kit.tar.gz \
&& tar -zxC /usr/src -f lua-nginx-module.tar.gz \
&& rm nginx.tar.gz luajit2.tar.gz ngx_devel_kit.tar.gz lua-nginx-module.tar.gz \
&& cd /usr/src/luajit2-$LUAJIT2_VERSION \
&& make \
&& make install \
&& cd /usr/src/nginx-$NGINX_VERSION \
&& ./configure $CONFIG --with-debug \
&& make -j$(getconf _NPROCESSORS_ONLN) \
&& mv objs/nginx objs/nginx-debug \
&& mv objs/ngx_http_xslt_filter_module.so objs/ngx_http_xslt_filter_module-debug.so \
&& mv objs/ngx_http_image_filter_module.so objs/ngx_http_image_filter_module-debug.so \
&& mv objs/ngx_http_geoip_module.so objs/ngx_http_geoip_module-debug.so \
&& mv objs/ngx_stream_geoip_module.so objs/ngx_stream_geoip_module-debug.so \
&& ./configure $CONFIG \
&& make -j$(getconf _NPROCESSORS_ONLN) \
&& make install \
&& rm -rf /etc/nginx/html/ \
&& mkdir /etc/nginx/conf.d/ \
&& mkdir -p /usr/share/nginx/html/ \
&& install -m644 html/index.html /usr/share/nginx/html/ \
&& install -m644 html/50x.html /usr/share/nginx/html/ \
&& install -m755 objs/nginx-debug /usr/sbin/nginx-debug \
&& install -m755 objs/ngx_http_xslt_filter_module-debug.so /usr/lib/nginx/modules/ngx_http_xslt_filter_module-debug.so \
&& install -m755 objs/ngx_http_image_filter_module-debug.so /usr/lib/nginx/modules/ngx_http_image_filter_module-debug.so \
&& install -m755 objs/ngx_http_geoip_module-debug.so /usr/lib/nginx/modules/ngx_http_geoip_module-debug.so \
&& install -m755 objs/ngx_stream_geoip_module-debug.so /usr/lib/nginx/modules/ngx_stream_geoip_module-debug.so \
&& ln -s ../../usr/lib/nginx/modules /etc/nginx/modules \
&& strip /usr/sbin/nginx* \
&& strip /usr/lib/nginx/modules/*.so \
&& rm -rf /usr/src/nginx-$NGINX_VERSION /usr/src/luajit2-$LUAJIT2_VERSION /usr/src/ngx_devel_kit-$NGX_DEVEL_KIT_VERSION /usr/src/lua-nginx-module-$LUA_NGINX_MODULE_VERSION \
\
# Bring in gettext so we can get `envsubst`, then throw
# the rest away. To do this, we need to install `gettext`
# then move `envsubst` out of the way so `gettext` can
# be deleted completely, then move `envsubst` back.
&& apk add --no-cache --virtual .gettext gettext \
&& mv /usr/bin/envsubst /tmp/ \
\
&& runDeps="$( \
scanelf --needed --nobanner --format '%n#p' /usr/sbin/nginx /usr/lib/nginx/modules/*.so /tmp/envsubst \
| tr ',' '\n' \
| sort -u \
| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
)" \
&& apk add --no-cache --virtual .nginx-rundeps $runDeps \
&& apk del .build-deps \
&& apk del .gettext \
&& mv /tmp/envsubst /usr/local/bin/ \
\
# Bring in tzdata so users could set the timezones through the environment
# variables
&& apk add --no-cache tzdata \
\
# forward request and error logs to docker log collector
&& ln -sf /dev/stdout /var/log/nginx/access.log \
&& ln -sf /dev/stderr /var/log/nginx/error.log
RUN apk add --no-cache libgcc
COPY nginx.conf /etc/nginx/nginx.conf
COPY nginx.vh.default.conf /etc/nginx/conf.d/default.conf
EXPOSE 80
STOPSIGNAL SIGTERM
CMD ["nginx", "-g", "daemon off;"]