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Installation Ubunutu add-apt-repository ppa:certbot/certbot apt-get update && apt-get install python-certbot CentOS yum install epel-release yum install python-certbot certbot Certbot You must stop anything on port 443/80 before starting certbo...

On Both Nodes Host file vim /etc/hosts 10.1.2.114 db1 db1.localdomain.com10.1.2.115 db2 db2.localdomain.com Corosync will not work if you add something like this: 127.0.0.1 db1 db2.localdomain.com - however you do not need to delete 127.0.0.1 localho...

Verification: NAT or transparent mode Value should return ( Firewall mode: Router ) show firewall Always do a backup!!! copy running-config disk0:/running-config-backup-DDMMYYYY ACL / No NAT Rules Change net-local and and remote for local and remote ...

CIDR Subnet Mask Total IPs Usable IPs /32 255.255.255.255 1 1 /31 255.255.255.254 2 2* /30 255.255.255.252 4 2 /29 255.255.255.248 8 6 /28 255.255.255.240 16 14 /27 255.255.255.224 32 30 /26 255.255...

Create a DB CREATE DATABASE new_database; Drop a DB DROP DATABASE new_database; Create a new user with all prems CREATE USER 'newuser'@'localhost' IDENTIFIED BY 'password'; GRANT [type of permission] ON [database name].[table name] TO ‘[username]’@'local...

What we will need to do for the recovery is to stop mysql and put it in innodb_force_recovery to attempt to backup all databases. service mysqld stop mkdir /root/mysqlbak cp -rp /var/lib/mysql/ib* /root/mysqlbak vim /etc/my.cnf You can start from 1 to 4, ...

*** TESTED FOR CENTOS 7 *** NEED TO HAVE PORT 3306 OPENED! -- MASTER = 10.1.2.117, SLAVE = 10.1.2.118 Master: vi /etc/my.cnf [mysqld]bind-address = 10.1.2.117server-id = 1log_bin = /var/lib/mysql/mysql-bin.logbinlog-do-db=mydbdatadir=/var/lib/mysqlsocket=/...

SED Character Description ^ Matches the beginning of the line $ Matches the end of the line . Matches any single character * Will match zero or more occurrences of the previous character [ ] Matches all the characters inside the [ ] ...

Routing View routes ip route ip route Adding a route ip addr add 192.168.1.100/24 dev eth0 Add a gateway ip route add default via 192.168.1.1 dev eth0 Add a route of a subnet to a gateway ip route add 10.1.2.0/24 via 10.1.2.1 dev eth0 null route (bla...

WordPress <IfModule mod_rewrite.c> RewriteEngine On RewriteBase / RewriteCond %{HTTPS} !=on RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301] # BEGIN WordPress RewriteRule ^index\.php$ - [L] RewriteCond %{REQUEST_FILENAME} !-f Rewri...

#!/bin/bash SERVEURS="HOSTNAME.SEVER.COM 127.0.0.1" RDIFFEXCLUSIONS="--exclude /mnt --exclude /media --exclude /proc --exclude /dev --exclude /sys --exclude /var/lib/lxcfs --exclude-sockets" RDIFFOPTS="--print-statistics" DATE=`date +%Y-%m-%d` echo ...

Docker hub https://hub.docker.com/ Searching an Image docker search <img-name> Pull a Image docker pull <image>:<version> Run a Container docker run -it <img-name> /bin/bash Run a Container with ports + volume -v = volume, -p =...

Display Show Display configuration show configuration | display set Show display detail configuration show configuration | display detail show arp macs show ethernet-switching table File To navigate the file system you can do file list /? Backup Bac...

# Interfaces WAN="ens3" LAN="ens9" #ifconfig $LAN up #ifconfig $LAN 192.168.1.1 netmask 255.255.255.0 echo 1 > /proc/sys/net/ipv4/ip_forward sysctl -w net.ipv4.ip_forward=1 iptables -F iptables -t nat -F iptables -t mangle -F iptables -X ...

/etc/named.conf options { listen-on port 53 { any; }; listen-on-v6 { none; }; directory "/var/named"; dump-file "/var/named/data/cache_dump.db"; statistics-file "/var/named/data/named_stats....

Useful scripts Restart ssh from URL http://11.22.33.44:2086/scripts2/doautofixer?autofix=safesshrestart To setup nat The /var/cpanel/cpnat file acts as a flag file for NAT mode. If the installer mistakenly detects a NAT-configured network, delete the/v...

This Wiki page is a list of examples based of this project i created, for the full project details go to the link below http://git.myhypervisor.ca/dave/grafana_ansible Directory Structure playbook ├── ansible.cfg ├── playbook-example.yml ├── group_vars ...

List Adapter Get-VMNetworkAdapterVlan -ManagementOS Adding Adapter Add-VMNetworkAdapter -ManagementOS -Name "Lan" -SwitchName "vSwitch" Add-VMNetworkAdapter -ManagementOS -Name "Wan" -SwitchName "vSwitch" Tagging vlan on Adapter Set-VMNetworkAdapterVlan...

Tags git tag -a v0.1 -m "tagname"git tag v0.1Deletegit tag -d v0.1 Branch Create branchgit branch stageCheck what branch you are ingit statusgit log --oneline --decorategit branch -aSwitch branches or restore working tree files.git checkout stagepush change...

Check SSL On domain openssl s_client -connect www.domain.com:443 Check a Certificate Signing Request (CSR) openssl req -text -noout -verify -in CSR.csr Check a private key openssl rsa -in privateKey.key -check Check a certificate (crt or pem) openssl x...