Monthly Archives: October 2024

Ubuntu 24.04 for Veeam Hardened Repository – 2. Configuration

ดูวิธีติดตั้ง Ubuntu ที่นี่

sudo -s
apt update && sudo apt upgrade
apt install nano

********จด PASSWORD ที่ใส่ตรงนี้เอาไว้ถ้าลืมจะเข้า Root Recovery Mode ไม่ได้*********

root@xfs:/home/trac# grub-mkpasswd-pbkdf2
Enter password: 
Reenter password: 
PBKDF2 hash of your password is grub.pbkdf2.sha512.10000.6A3D605329C75C953013AF024D3F3D91A5FE8354B868E6B9C2292FD3569CA25C2BFA4F2DD834573F350CCAE58D5A1DD62D643FABD1A82805DFBB76BE57D72C95.AD10869820BE431B1A933D4A22E502430EB67C4ADA401ACCBCB9C65A6180589C1E7DA03EDE8DDF9C9FB6EB22EC81C8F50E0313DD35E884B4CB75831598FE50CF
root@xfs:/home/trac#

nano /etc/grub.d/40_custom
add password to line password_pbkdf2 root

set superusers="root"
password_pbkdf2 root grub.pbkdf2.sha512.10000.6A3D605329C75C953[…]

nano /etc/grub.d/10_linux
add the –unrestricted parameter to the CLASS variable

CLASS="--class gnu-linux --class gnu --class os --unrestricted"

update-grub
timedatectl
timedatectl set-timezone Asia/Bangkok
useradd veeamuser –create-home -s /bin/bash
passwd veeamuser
usermod -a -G sudo veeamuser
df -Th
chown -R veeamuser:veeamuser /Backup/
chmod 700 /Backup/
ll /Backup

Add Repository to VEEAM

Back to Ubuntu

**********หลังจากขั้นตอนนี้จะ SSH ไปที่เครื่องนี้ไม่ได้ ต้องเข้าผ่านหน้าเครื่อง แนะนำให้ถอดสาย iLO เพื่อความปลอดภัย**********

deluser veeamuser sudo
systemctl disable ssh.service
systemctl stop ssh.service ssh.socket

PostgreSQL Install With SSL Connection

Install PostgreSQL
https://www.cherryservers.com/blog/how-to-configure-ssl-on-postgresql

dnf update
dnf module list postgresql
dnf install https://download.postgresql.org/pub/repos/yum/reporpms/EL-8-x86_64/pgdg-redhat-repo-latest.noarch.rpm
dnf -qy module disable postgresql
dnf install postgresql14 postgresql14-server -y
/usr/pgsql-14/bin/postgresql-14-setup initdb
systemctl start postgresql-14
systemctl enable postgresql-14
systemctl status postgresql-14
ss -pnltu | grep 5432
sudo su
su – postgres
psql
ALTER USER postgres WITH PASSWORD ‘YOUR@PASSWORD’
\q
exit

certificate

cd /var/lib/pgsql/14/data
openssl genrsa -aes128 2048 > server.key
ls -l | grep server.key
openssl rsa -in server.key -out server.key
chmod 400 server.key
chown postgres.postgres server.key
openssl req -new -key server.key -days 365 -out server.crt -x509 -addext “subjectAltName = DNS:postgresql.trac.local”
cp server.crt root.crt

Edit postgresql.conf
nano /var/lib/pgsql/14/data/postgresql.conf


listen_addresses = ‘*’
max_connections = 300
shared_buffers = 128MB
ssl = on
ssl_ca_file = ‘root.crt’
ssl_cert_file = ‘server.crt’
ssl_crl_file = ”
ssl_key_file = ‘server.key’
ssl_ciphers = ‘HIGH:MEDIUM:+3DES:!aNULL’ # allowed SSL ciphers
ssl_prefer_server_ciphers = on

Edit pg_hba.conf
nano /var/lib/pgsql/14/data/pg_hba.conf


hostssl all all 192.168.3.82/32 scram-sha-256
hostssl all all 192.168.3.83/32 scram-sha-256
host all all 192.168.3.82/32 trust
host all all 192.168.3.83/32 trust


systemctl restart postgresql-14
firewall-cmd –add-service=postgresql –permanent
firewall-cmd –reload
psql -U postgres -p 5432 -h postgresql.trac.local

for PrivX Server Connection

yum install ca-certificates
update-ca-trust force-enable
copy server.crt to /etc/pki/ca-trust/source/anchors/
update-ca-trust extract

create user

sudo -u postgres createuser <username>

Mellanox MLAG Configuration

เตรียม IP Address

Management IP
Switch 1 Management IP : 192.168.1.11
Switch 2 Management IP : 192.168.1.12
MLAG IP : 192.168.1.10 (Subnet เดียวกับ Switch 1,2 Management IP)

IPL IP ไม่ตรงกับ Subnet ที่มีใช้งานอยู่แล้วในบริษัท
Switch 1 IPL IP : 10.1.4.10
Switch 2 IPL IP : 10.1.4.11

Config Switch ทั้งคู่

# configure terminal
# hostname SwitchX
# interface mgmt0
# ip address 192.168.1.11 255.255.255.0
# exit
# ip route vrf mgmt 0.0.0.0/0 192.168.1.254
# ip name-server vrf mgmt 192.168.1.1
# ip domain-list domain.local

# en
# configure terminal
# lacp
# no spanning-tree
# ip routing
# protocol mlag
# dcb priority-flow-control enable force

Config IPL ทำที่ Switch ทั้งคู่ ใช้ Port ที่ Link ระหว่าง Switch หากัน

# interface port-channel 1
interface port-channel 1 ) # exit

# interface ethernet 1/35 channel-group 1 mode active
# interface ethernet 1/36 channel-group 1 mode active

# vlan 4000
vlan 4000) # exit

# interface vlan 4000
interface vlan 4000 ) # exit

# interface port-channel 1 ipl 1
# interface port-channel 1 dcb priority-flow-control mode on force

Config IPL Switch 1

# interface vlan 4000
interface vlan 4000 ) # ip address 10.4.1.10 /24
interface vlan 4000 ) # ipl 1 peer-address 10.4.1.11
interface vlan 4000 ) # exit

Config IPL Switch 2

# interface vlan 4000 on switch 2
interface vlan 4000 ) # ip address 10.4.1.11 /24
interface vlan 4000 ) # ipl 1 peer-address 10.4.1.10
interface vlan 4000 ) # exit

Config MLAG ทำที่ Switch ทั้งคู่

# mlag-vip my-mlag-vip-domain ip 192.168.1.10 /24 force
# mlag system-mac 00:00:5E:00:01:5D
# no mlag shutdown

ตัวอย่างสร้าง 3 mlag-port-chanel ทำที่ Switch ทั้งคู่

# interface mlag-port-channel 1-3
# interface mlag-port-channel 1-3) # exit

# interface ethernet 1/1 mlag-channel-group 1 mode active
# interface ethernet 1/2 mlag-channel-group 1 mode active

# interface ethernet 1/3 mlag-channel-group 2 mode active
# interface ethernet 1/4 mlag-channel-group 2 mode active

# interface ethernet 1/5 mlag-channel-group 3 mode active
# interface ethernet 1/6 mlag-channel-group 3 mode active

# interface mlag-port-channel 1-3 no shutdown

VMware ดึงข้อมูล VM ที่มี Snapshot และ Power Off

ติดตั้ง PowerShell 7

  • Update PowerShell
  • winget install –id Microsoft.Powershell –source winget

    Install VMware PowerCLI ด้วย Powershell

    • Install-Module -Name VMware.PowerCLI -Scope CurrentUser
    • Get-Command -Module *VMWare*
    • Set-PowerCLIConfiguration -Scope User -ParticipateInCeip $false

    Trust Root vCenter

    • https://your.vcenter.name/certs/download.zip

    Connect vCenter

    • connect-viserver your.vcenter.name

    Check Snapshot VM

    • Get-VM | Get-Snapshot | select VM, Name, Created | Export-Csv c:\Software\vmsnap1.csv -NoTypeInformation

    Check Power Off VM

    • Get-VM | Where-Object -Property PowerState -eq ‘PoweredOff’ | Select-Object -Property Name, @{Label=’poweredOffTime’; Expression={$_ | Get-VIEvent -Types Info | Where-Object -Property fullformattedmessage -Match ‘shutdown|powered off’ | Sort-Object -Property CreatedTime | Select-Object -Last 1 -ExpandProperty CreatedTime }} | Export-Csv c:\Software\vmoff1.csv -NoTypeInformation

      VMware vCenter Certificate Expire

      เช็ค Web Certificate ว่า Expire

      เปิด SSH ที่ vCenter

      SSH ไปที่ vCenter

      #shell

      #/usr/lib/vmware-vmca/bin/certificate-manager

      #4

      กรอกข้อมูลให้เรียบร้อย รอให้ Process เสร็จ 100%

      *ถ้า Update Fail ให้ไป เปลี่ยน Service VMware vSphere Update Manager ใน vCenter Management เป็น Manual ก่อน แล้วทำขั้นตอนเดิมอีกครั้ง

      ไปเช็ค Certificate จะหมดอายุอีก 2 ปี