Deep dive into Kernel

Receiver 가 MSRP 메시지를 받음MSRP 8UH1zZt9n7ei SEND^MTo-Path: msrps://172.30.0.190:9/tKSB125985000004;tcp^MFrom-Path: msrps://sbc.example.com:1234/wibD3206000022;tcp^MMessage-ID: yZCoXV2Qz15jtKWC3KOP7OMCVu8NJpC3^MSuccess-Report: no^MFailure-Report: yes^MByte-Range: 1-345/345^MContent-Type: message/cpim^M^MFrom: ^MTo: ^MNS: imdn ^Mimdn.Message-ID: TdemiCVxBjH8a2hsxGPOeC9W192h0q7R^MDateTime: 2018-05-15T..

ansible-playbook --limit 'all:!bad_host' playbook.yml

- name: Send shell command hosts: all become: yes tasks: - name: Send shell command command: "{{ command }}" register: out - debug: msg="{{ out.stdout }}"

Graph DB정의 Cypher Query명령어 start 그래프에서 출발점 match create 노드 및 관계를 생성 delete 노드 및 관계, 속성을 제거 python driver Version >=3 이상을 권장한다.pip install py2neo Database 에 접속하기 from py2neo import Graphgraph = Graph(host="192.168.1.145", password="1234") 노드를 생성create (company {name:"MyCompany"}) return company; Reference주요 명령어 http://woner.tistory.com/25py2neo http://py2neo.org/v4/database.html

TICK scrypt예제stream // Select just the cpu measurement from our example database. |from() .measurement('cpu') |alert() .crit(lambda: "usage_idle" < 70) // Whenever we get an alert write it to a file. .log('/tmp/alerts.log') TICK 등록

influxdb 주요 commands 접속 (ssl 사용시)influx -ssl -unsafeSsl 명령어 설명 show databases influxdb의 database 리스트를 보여 줌

Dialog : a peer-to-peer SIP relationship between two user agents that persists for some time. - A dialog is identified at each UA with a dialog ID, which consists of a Call-ID value, a local tag and a remote tag. Dialog = {Call-ID + local tag + remote tag}

Default setting DBGvpp# show threadsID Name Type LWP Sched Policy (Priority) lcore Core Socket State0 vpp_main 8745 other (0) 0 0 01 stats 8750 other (0) 0 0 0 Set number of worker threadsat /etc/vpp/startup.conf cpu { workers 2} DBGvpp# show threadsID Name Type LWP Sched Policy (Priority) lcore Core Socket State0 vpp_main 8856 other (0) 0 0 01 vpp_wk_0 workers 8861 other (0) 1 1 02 vpp_wk_1 wor..

http://natsys-lab.blogspot.kr/2016/10/http-strings-processing-using-c-sse42.html https://www.slideshare.net/kazuho/h2o-20141103pptx http://halobates.de/pcmpstr-js/pcmp.html

Question0: segment_manager_alloc_session_fifos:464: No space to allocate fifos! 0: tcp46_listen_inline:2788: session accept fail DBGvpp# show session Thread 0: 2031 active sessions What is tunning parameter or codes to increase number of tcp session? AnswerWhen apps attach to the session layer they request a given size for the shared memory segment out of which fifos are allocated and also the s..