Is it possible to set the worker_processes attribute in the nginx.conf of the staticfile_buildpack to different value from 1
Article ID: 420907
Updated On:
Products
Issue/Introduction
There is no direct way to set this up:
if you follow https://docs.cloudfoundry.org/buildpacks/staticfile/index.html#staticfile
there are certain parameters that can be configured during cf push
Also there is a KB https://knowledge.broadcom.com/external/article/298345/erb-templating-of-the-nginxconf-file-no.html
That explains different approaches to update certain params, however none of them is able to change the number of worker_processes
From how-to-conf-nginx-worker-connections-with-cf-buildpack-staticfile
"If you need to customize these settings use the nginx-buildpack instead and just provide a full custom nginx.conf file.
You can run once using the staticfile buildpack, cf ssh into the container, copy out the generated config file for your app, then switch to the nginx-buildpack and use the copied config file. That will give you a base configuration file, you can then edit as you need and get something similar."
Environment
Tanzu Elastic Application Runtime
Cause
The required parameters are defined as static and cannot be overwritten.
Resolution
Here is a working example to set number of worker_processes using nginx_buildpack:
To compile the app used: https://github.com/govau/cf-example-staticfile
Completed the following steps:
1. updated the manifest file
applications:
- name: cf-example-staticfile
random-route: true
buildpack: nginx_buildpack # <--- CHANGE THIS
memory: 64M
disk_quota: 256M
path: . # <--- CHANGE THIS (Uploads everything, including config)
2. In main folder create file nginx.conf
# nginx.conf
worker_processes 3; # <--- Your custom setting
daemon off;
events {
worker_connections 1024;
}
http {
include mime.types;
default_type application/octet-stream;
sendfile on;
server {
# The NGINX Buildpack replaces {{port}} with the actual port number
listen {{port}};
# Point this to your content folder
root web;
index index.html;
location / {
try_files $uri $uri/ =404;
}
}
}3. create file mime.types in same folder
types {
text/html html htm shtml;
text/css css;
text/xml xml;
image/gif gif;
image/jpeg jpeg jpg;
application/javascript js;
application/atom+xml atom;
application/rss+xml rss;
font/ttf ttf;
font/woff woff;
font/woff2 woff2;
text/mathml mml;
text/plain txt;
text/vnd.sun.j2me.app-descriptor jad;
text/vnd.wap.wml wml;
text/x-component htc;
image/png png;
image/svg+xml svg svgz;
image/tiff tif tiff;
image/vnd.wap.wbmp wbmp;
image/webp webp;
image/x-icon ico;
image/x-jng jng;
image/x-ms-bmp bmp;
application/font-woff woff;
application/java-archive jar war ear;
application/json json;
application/mac-binhex40 hqx;
application/msword doc;
application/pdf pdf;
application/postscript ps eps ai;
application/rtf rtf;
application/vnd.apple.mpegurl m3u8;
application/vnd.google-earth.kml+xml kml;
application/vnd.google-earth.kmz kmz;
application/vnd.ms-excel xls;
application/vnd.ms-fontobject eot;
application/vnd.ms-powerpoint ppt;
application/vnd.wap.wmlc wmlc;
application/vnd.google-earth.kml+xml kml;
application/vnd.google-earth.kmz kmz;
application/x-7z-compressed 7z;
application/x-cocoa cco;
application/x-java-archive-diff jardiff;
application/x-java-jnlp-file jnlp;
application/x-makeself run;
application/x-perl pl pm;
application/x-pilot prc pdb;
application/x-rar-compressed rar;
application/x-redhat-package-manager rpm;
application/x-sea sea;
application/x-shockwave-flash swf;
application/x-stuffit sit;
application/x-tcl tcl tk;
application/x-x509-ca-cert der pem crt;
application/x-xpinstall xpi;
application/xhtml+xml xhtml;
application/xspf+xml xspf;
application/zip zip;
application/octet-stream bin exe dll;
application/octet-stream deb;
application/octet-stream dmg;
application/octet-stream iso img;
application/octet-stream msi msp msm;
audio/midi mid midi kar;
audio/mpeg mp3;
audio/ogg ogg;
audio/x-m4a m4a;
audio/x-realaudio ra;
video/3gpp 3gpp 3gp;
video/mp2t ts;
video/mp4 mp4;
video/mpeg mpeg mpg;
video/quicktime mov;
video/webm webm;
video/x-flv flv;
video/x-m4v m4v;
video/x-mng mng;
video/x-ms-asf asx asf;
video/x-ms-wmv wmv;
video/x-msvideo avi;
}Finally the folder looks like this
drwxrwxr-x 6 ubuntu ubuntu 4096 Dec 3 17:13 ./
drwxr-x--- 7 ubuntu ubuntu 4096 Dec 3 17:05 ../
drwxrwxr-x 2 ubuntu ubuntu 4096 Dec 3 16:14 .circleci/
drwxrwxr-x 8 ubuntu ubuntu 4096 Dec 3 16:14 .git/
-rw-rw-r-- 1 ubuntu ubuntu 141 Dec 3 17:12 manifest.yml
-rw-rw-r-- 1 ubuntu ubuntu 3932 Dec 3 17:13 mime.types
-rw-rw-r-- 1 ubuntu ubuntu 516 Dec 3 17:13 nginx.conf
-rw-rw-r-- 1 ubuntu ubuntu 1727 Dec 3 16:14 README.md
drwxrwxr-x 2 ubuntu ubuntu 4096 Dec 3 16:14 scripts/
drwxrwxr-x 2 ubuntu ubuntu 4096 Dec 3 17:05 web/Deploy the app
cf push
and result in the app
cf ssh cf-example-staticfile -c "cat /home/vcap/app/nginx.conf" | grep worker_processes
worker_processes 3; # <--- Your custom setting
ubuntu@opsmanager-3-2:~$ cf ssh cf-example-staticfile
vcap@fbd642c0-ef5f-4202-7e3c-a067:~$ ps -ef
UID PID PPID C STIME TTY TIME CMD
root 1 0 0 17:14 ? 00:00:00 /tmp/garden-init
vcap 7 0 0 17:14 ? 00:00:00 /tmp/lifecycle/diego-sshd --allowedKeyExchanges= --address=0.0.0.0:2222 --allowUnauthenticatedClients=false --inheritDaemon
root 8 0 0 17:14 ? 00:00:00 sh -c trap 'kill -9 0' TERM; /etc/cf-assets/envoy/envoy -c /etc/cf-assets/envoy_config/envoy.yaml --drain-time-s 900 --log-
vcap 19 0 0 17:14 ? 00:00:00 nginx: master process nginx -p /home/vcap/app -c ./nginx.conf
root 72 8 0 17:14 ? 00:00:00 /etc/cf-assets/envoy/envoy -c /etc/cf-assets/envoy_config/envoy.yaml --drain-time-s 900 --log-level critical
vcap 93 19 0 17:14 ? 00:00:00 nginx: worker process
vcap 94 19 0 17:14 ? 00:00:00 nginx: worker process
vcap 95 19 0 17:14 ? 00:00:00 nginx: worker process
root 110 0 0 17:14 ? 00:00:00 /etc/cf-assets/healthcheck/healthcheck -port=8080 -timeout=1000ms -liveness-interval=30s
vcap 136 7 0 17:16 pts/0 00:00:00 /bin/bash
vcap 143 136 0 17:16 pts/0 00:00:00 ps -ef
In case the static_buildpack is required, create a copy of the buildpack update the nginx.conf and rebuild it as alternative approach.
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