dstrbad

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dstrbad

#!/bin/bash

IP="192.168.1.22"
SUBJECT_CA="/C=SE/ST=Stockholm/L=Stockholm/O=himinds/OU=CA/CN=$IP"
SUBJECT_SERVER="/C=SE/ST=Stockholm/L=Stockholm/O=himinds/OU=Server/CN=$IP"
SUBJECT_CLIENT="/C=SE/ST=Stockholm/L=Stockholm/O=himinds/OU=Client/CN=$IP"

function generate_CA () {
   echo "$SUBJECT_CA"
   openssl req -x509 -nodes -sha256 -newkey rsa:2048 -subj "$SUBJECT_CA"  -days 365 -keyout ca.key -out ca.crt

dstrbad

#!/bin/bash

# https://www.digitalocean.com/community/tutorials/how-to-secure-apache-with-let-s-encrypt-on-ubuntu-14-04

# Download the Let’s Encrypt Client
cd /usr/local/sbin
sudo wget https://dl.eff.org/certbot-auto
sudo chmod a+x /usr/local/sbin/certbot-auto

# Set Up the SSL Certificate

dstrbad

Average:        0         9    0.00    0.14    0.00    0.24    0.14     -  ksoftirqd/0
Average:        0        10    0.00    0.17    0.00    0.35    0.17     -  rcu_preempt
Average:        0       530    0.00    0.03    0.00    0.00    0.03     -  jbd2/mmcblk1p1-
Average:        0       785    0.00    0.07    0.00    0.21    0.07     -  haveged
Average:        0       818    0.03    0.00    0.00    0.00    0.03     -  connmand
Average:        0       821    4.64    4.47    0.00    0.00    9.12     -  kubelet
Average:        0      1416    0.14    0.07    0.00    0.03    0.21     -  fail2ban-server
Average:        0      1760    0.42    0.69    0.00    0.35    1.11     -  kube-proxy
Average:        0      3436    1.70    0.90    0.00    0.00    2.60     -  containerd
Average:        0      4274    0.07    0.03    0.00    0.07    0.10     -  systemd-journal

dstrbad

debian@bbb-test:~$ sudo perf stat -e task-clock,cycles,instructions,branches,branch-misses,instructions,cache-misses,cache-references
^C
 Performance counter stats for 'system wide':

         16,203.12 msec task-clock                #    1.000 CPUs utilized
     4,332,572,389      cycles                    # 267393.223 GHz                    (71.42%)
       911,023,486      instructions              #    0.21  insn per cycle           (71.40%)
        98,098,648      branches                  # 6054350.923 M/sec                 (71.41%)
        30,116,184      branch-misses             #   30.70% of all branches          (71.44%)
       885,259,275      instructions              #    0.20  insn per cycle           (71.45%)

dstrbad

GODEBUG=gctrace=1,schedtrace=1000
gc 80 @1195.750s 0%: 0.070+217+0.19 ms clock, 0.070+57/63/59+0.19 ms cpu, 24->24->12 MB, 25 MB goal, 1 P
    
SCHED 1196345ms: gomaxprocs=1 idleprocs=1 threads=18 spinningthreads=0 idlethreads=6 runqueue=0 [0]

dstrbad

debian@bbb-test:~$ wget http://127.0.0.1:10248/debug/pprof/profile?seconds=120
debian@bbb-test:~$ wget http://127.0.0.1:10248/debug/pprof/trace?seconds=120

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% time     seconds  usecs/call     calls    errors syscall
------ ----------- ----------- --------- --------- ----------------
 65.66    1.671983        5006       334        60 futex
 11.77    0.299775         967       310           epoll_wait
  9.24    0.235263         364       647           nanosleep
  2.58    0.065766          31      2136           clock_gettime
  1.75    0.044623          38      1180        68 read
...
------ ----------- ----------- --------- --------- ----------------
100.00    2.546516                 10290       356 total

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iostat -xz 1
sar -n DEV 1
sar -n TCP,ETCP 1

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debian@bbb-test:~$ pidstat 30 1
Linux 4.19.9-ti-r5 (bbb-test)   02/25/2019      _armv7l_        (1 CPU)

04:59:26 PM   UID       PID    %usr %system  %guest    %CPU   CPU  Command

04:59:56 PM     0     26749    3.54    1.62    0.00    5.16     0  dockerd
04:59:56 PM     0     26754    0.44    0.37    0.00    0.81     0  docker-containe
04:59:56 PM     0     26784    0.00    0.07    0.00    0.07     0  kworker/u2:2-flush-179:0
04:59:56 PM     0     28814   10.08   10.79    0.00   20.88     0  kubelet
04:59:56 PM     0     29338    0.51    1.15    0.00    1.65     0  kube-proxy