rothgar

rothgar

rothgar

#!/bin/sh
# Follow instructions here to enable dev mode and start VM
# https://github.com/lstoll/cros-crostini/blob/master/README.md

sudo apt-get update
sudo apt-get install -y libasound2 libxss1 wget

wget -qO- https://go.microsoft.com/fwlink/?LinkID=620884 | tar xvz

# Launch code

rothgar

#!/bin/bash
# Taken from https://medium.com/netflix-techblog/linux-performance-analysis-in-60-000-milliseconds-accc10403c55

# initialize array
COMMANDS=('uptime')
# add systemctl command if it's installed
command -v systemctl >/dev/null && COMMANDS+=('systemctl list-units --state=failed')
# add more commands
COMMANDS+=('dmesg | tail'
          'vmstat 1'

rothgar

apiVersion: "v1"
kind: Pod
metadata:
  name: test
  labels:
    name: test
spec:
  containers:
    - name: nginx
      image: nginx

rothgar

docker run --rm -it gcr.io/google_containers/nginx-ingress-controller:0.9.0-beta.7 nginx -V
nginx version: nginx/1.13.0
built by gcc 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 
built with OpenSSL 1.0.2g  1 Mar 2016
TLS SNI support enabled
configure arguments: --prefix=/usr/share/nginx --conf-path=/etc/nginx/nginx.conf --http-log-path=/var/log/nginx/access.log --error-log-path=/var/log/nginx/error.log --lock-path=/var/lock/nginx.lock --pid-path=/run
/nginx.pid --http-client-body-temp-path=/var/lib/nginx/body --http-fastcgi-temp-path=/var/lib/nginx/fastcgi --http-proxy-temp-path=/var/lib/nginx/proxy --http-scgi-temp-path=/var/lib/nginx/scgi --http-uwsgi-temp-p
ath=/var/lib/nginx/uwsgi --with-debug --with-pcre-jit --with-http_ssl_module --with-http_stub_status_module --with-http_realip_module --with-http_auth_request_module --with-http_addition_module --with-http_dav_mod
ule --with-http_geoip_module --with-http_gzip_static_module --with-http_sub_module --with-http_v2_module --with-stream --with-stream_ssl_mo

rothgar

FROM scratch

ADD caddy /

EXPOSE 2015

CMD ['/caddy']

rothgar

I have run an nginx container...

docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS               NAMES
6d67de07731d        nginx               "nginx -g 'daemon ..."   40 minutes ago      Up 40 minutes       80/tcp, 443/tcp     epic_goldberg

I want to use strace for debug:
docker run -it --pid=container:6d67de07731d --net=container:6d67de07731d --cap-add sys_admin --cap-add sys_ptrace bash

I can see the nginx process:

rothgar

#!/bin/bash
wget -r -nc -p --html-extension -k -D google.com -np https://landing.google.com/sre/book/

rothgar

apiVersion: v1
kind: ConfigMap
metadata:
  name: coredns
  namespace: kube-system
data:
  Corefile: |
    .:53 {
        log stdout
        health