CentOS 7 and CentOS 8 updated repo after its EOL

Rumi,

For CentOS 7 mirrorlist.centos.org doesn’t exists anymore. So, your default repor wwith yum doesn’t work. Try using the following processes, it worked for me, hope this works for others as well. sed -i s/mirror.centos.org/vault.centos.org/g /etc/yum.repos.d/*.repo sed -i s/^#.*baseurl=http/baseurl=http/g /etc/yum.repos.d/*.repo sed -i s/^mirrorlist=http/#mirrorlist=http/g /etc/yum.repos.d/*.repo Ref: https://serverfault.com/questions/1161816/mirrorlist-centos-org-no-longer-resolve For CentOS 8 sed -i…

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WordPress WP Backup Sample Script

Rumi,

#!/bin/bash # your backups will use these filenames. db_backup_name=”tweenpath-db-backup-“`date “+%Y-%m-%d”`”.sql.gz” wpfiles_backup_name=”tweenpath-files-backup-“`date “+%Y-%m-%d”`”.tar.gz” ## 1: database connection info. You can get these details from your wp-config file. db_name=”user_name” db_username=”database” db_password=”password” ## 2: Path to your WordPress Upload and Theme directories. Replace /home/username/ with path to your home directory. wp_upload_folder=”/home/tweenpath/public_html” ## 3:…

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XCP-NG few basic command lines- CLI

Rumi,

Run the following command to list VMs and their UUIDs: xe vm-list resident-on=<uuid_of_host> Try the shutdown command with force: xe vm-shutdown uuid=<uuid_of_vm> force=true Restart the toolstack on the host by using the following command: xe-toolstack-restart Restart the host. shutdown -r now If the VM is still not shutdown, you might…

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MOTD with NeoFetch

Rumi,

Install NetoFetch First: sudo apt install neofetch sudo cp motd.sh /etc/profile.d/motd.sh sudo chmod +x /etc/profile.d/motd.sh Open the motd.sh filw using text editor and paste below: #!/bin/bash printf “\n” neofetch Exit from shell and re-login- Voila!

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Install LetsEncrypt on Debian with Nginx Server

Rumi,

Install Certbot and its Nginx plugin with apt: sudo apt install certbot python3-certbot-nginx Certbot provides a variety of ways to obtain SSL certificates through plugins. The Nginx plugin will take care of reconfiguring Nginx and reloading the config whenever necessary. To use this plugin, type the following: sudo certbot –nginx -d…

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Reset XCP-ng root password

Rumi,

The full prodecure can also be found on xcp-ng site. Reboot your XCP-ng into Grub boot menu. Select XCP-ng boot menu entry and press e key to edit boot options. Locate the read-only parameter ro and replace it with rw init=/sysroot/bin/sh. Press Ctrl + X to boot into single-mode. From…

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Creating 1:1 NAT using iptables

Rumi,

Its a POC where I needed a 1:1 NAT using  Linux iptables. I used 2 Debian 11 OS for this and here’s the machine IP plans- VM-1: IPTables/NAT Router- 123.45.67.5/24, 123.45.67.6/24 and 192.168.10.5/24 VM-2: Backend Server- 192.168.10.6/24 (this VM’s gateway will be 192.168.10.5 On VM-1 Uninstall nftables and its Dependencies…

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MinIO object storage upload using curl

Rumi,

#!/bin/bash # Usage: ./minio-upload my-bucket my-file.zip bucket=$1 file=$2 host=minio.example.com s3_key=svc_example_user s3_secret=svc_example_user_password resource=”/${bucket}/${file}” content_type=”application/octet-stream” date=`date -R` _signature=”PUT\n\n${content_type}\n${date}\n${resource}” signature=`echo -en ${_signature} | openssl sha1 -hmac ${s3_secret} -binary | base64` curl -X PUT -T “${file}” \ -H “Host: ${host}” \ -H “Date: ${date}” \ -H “Content-Type: ${content_type}” \ -H “Authorization: AWS ${s3_key}:${signature}” \…

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