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version: "3.8"
services:
  es-1:
    image: docker.elastic.co/elasticsearch/elasticsearch:7.8.0
    volumes:
      - ./elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml
    ports:
      - "9200:9200"
      - "9300:9300"
    ulimits:

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# System
-   dstat  - Combines vmstat, iostat, ifstat, netstat information and more.
-   lsof  - List open files by processes.
-   dstat  - Combines vmstat, iostat, ifstat, netstat information and more
# Network
-  dig  - DNS lookup.
-  ping  - The ping command sends echo requests to the host you specify on the command line, and lists the responses received their round trip time.
-  traceroute  - traceroute will show the route of a packet. It attempts to list the series of hosts through which your packets travel on their way to a given destination.
-  nslookup  - nslookup command also use to find out DNS related query.

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List of Linux networking tools

netstat (ss)

Displays contents of /proc/net files. It works with the Linux Network Subsystem, it will tell you what the status of ports are ie. open, closed, waiting, masquerade connections. It will also display various other things. It has many different options. Netstat (Network Statistic) command display connection info, routing table information etc. To displays routing table information use option as -r.

Sample output:

Proto Recv-Q Send-Q  Local Address          Foreign Address        (state)    
tcp4 0 0 127.0.0.1.62132 127.0.0.1.http ESTABLISHED

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version: '3'

services:
  vaultwarden:
    image: vaultwarden/server:latest
    container_name: vaultwarden
    restart: always
    ports:
      - 8080:80
      - 3012:3012

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        location ~ ^(/images/)([A-Za-z0-9_\-!~$.])([A-Za-z0-9_\-!~$.]*\.[A-Za-z0-9_\-!~$.]+)$ {
            try_files $uri $1$2/$2$3 =404;
        }

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CREATE DATABASE IF NOT EXISTS `one`;
CREATE DATABASE IF NOT EXISTS `two`;
CREATE DATABASE IF NOT EXISTS `three`;

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version: '3.3'
services:
  jenkins:
    image: jenkins/jenkins:lts
    restart: unless-stopped
    privileged: true
    user: root
    ports:
      - 8080:8080
    container_name: jenkins

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3 glusterfs server + 1 client.
On all 4 nodes:

apt install software-properties-common
add-apt-repository ppa:gluster/glusterfs-10

glusterfs-server:
apt update && apt install glusterfs-server

glusterfs-client:

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#Unix Toolbox

This document is a collection of Unix/Linux/BSD commands and tasks which are useful for IT work or for advanced users. This is a practical guide with concise explanations, however the reader is supposed to know what s/he is doing.

##Unix Toolbox revision 14.4

The latest version of this document can be found at http://cb.vu/unixtoolbox.xhtml. Replace .xhtml on the link with .pdf for the PDF version and with .book.pdf for the booklet version. On a duplex printer the booklet will create a small book ready to bind. This XHTML page can be converted into a nice PDF document with a CSS3 compliant application (see the script example). See also the about page.
Error reports and comments are m

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version: '3'

services:
 minio-1:
  image: minio/minio:latest
  volumes:
   - /mnt/volume1/:/data-1
   - /mnt/volume12/:/data-2
  ports:
   - "10.0.0.130:9000:9000"