vgextend my-lv /dev/sdb
Device /dev/sdb excluded by a filter.
wipefs -a /dev/sdb
/dev/sdb: 8 bytes were erased at offset 0x00000200 (gpt): 45 46 49 20 50 41 52 54
/dev/sdb: 8 bytes were erased at offset 0x77ffffe00 (gpt): 45 46 49 20 50 41 52 54
/dev/sdb: 2 bytes were erased at offset 0x000001fe (PMBR): 55 aa
vgextend my-lv /dev/sdb
Physical volume “/dev/sdb” successfully created.
Volume group “my-lv” successfully extended
curl -1sLf ‘https://dl.cloudsmith.io/public/rabbitmq/rabbitmq-erlang/setup.deb.sh’ | sudo -E bash
curl -s https://packagecloud.io/install/repositories/rabbitmq/rabbitmq-server/script.deb.sh | sudo bash
apt install rabbitmq-server
Fortinet_Lab # config router static
Fortinet_Lab (static) # edit 1
new entry ‘1’ added
Fortinet_Lab (1) # set gateway 10.80.144.1
Fortinet_Lab (1) # set dst 0.0.0.0/0
Fortinet_Lab (1) # set device port1
Fortinet_Lab (1) # end
---
- hosts: all_servers
vars:
ansible_python_interpreter: auto_legacy_silent
users:
- "user1"
- "user2"
- "user2"
tasks:
- name: "Ensure group admin exists"
group:
name: admin
state: present
- name: "Create user accounts"
user:
name: "{{ item }}"
groups: "admin"
shell: /bin/bash
with_items: "{{ users }}"
- name: "Add authorized keys"
authorized_key:
user: "{{ item }}"
key: "{{ lookup('file', 'files/'+ item + '.pub') }}"
with_items: "{{ users }}"
- name: "Allow admin users to sudo without a password"
lineinfile:
dest: "/etc/sudoers" # path: in version 2.3
state: "present"
regexp: "^%admin"
line: "%admin ALL=(ALL) NOPASSWD: ALL"
Create SSH user keys in files directory:
ssh-keygen -t rsa -f ~/files/user1.pub -C user1
ssh-keygen -t rsa -f ~/files/user2.pub -C user2
ssh-keygen -t rsa -f ~/files/user3.pub -C user3
Run ansible yaml:
ansible-playbook users_create.yaml
That will create 3 users in all_servers group with sudo privileges.
ssh-keygen -t rsa -f ~/some_folder/username -C username
nmap -v -sn -n 192.168.0.0/24 -oG - | awk '/Status: Down/{print $2}'
lsof -a +L1 /var/lib/some/app
ncdu disable black
export NO_COLOR=1
ncdu /root
filebeat -c config.yml -e -d “*”
cd /usr/local/ispconfig/interface/ssl/
mv ispserver.crt ispserver.crt-$(date +"%y%m%d%H%M%S").bak
mv ispserver.key ispserver.key-$(date +"%y%m%d%H%M%S").bak
mv ispserver.pem ispserver.pem-$(date +"%y%m%d%H%M%S").bak
ln -s /var/www/clients/client0/webXXX/ssl/`hostname -f`-le.crt ispserver.crt
ln -s /var/www/clients/client0/webXXX/ssl/`hostname -f`-le.key ispserver.key
cat ispserver.{key,crt} > ispserver.pem
chmod 600 ispserver.pem
Where XXX web number
openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout /etc/ssl/private/nginx-selfsigned.key -out /etc/ssl/certs/nginx-selfsigned.crt
Convert OpenVZ VM to LXC VM
Install same version lxc OS
lxc launch ubuntu:20.04 lxc-server
lxc stop lxc-server
rm -rf /var/snap/lxd/common/lxd/storage-pools/default/containers/lxc-server/rootfs
mkdir /var/snap/lxd/common/lxd/storage-pools/default/containers/lxc-server/rootfs
On Ubuntu 20.04 OpenVZ VM run:
rsync -avz -e ssh --exclude=etc/inittab --exclude=etc/network/interfaces --exclude=dev/ --exclude=sys/ --exclude=proc/ / [email protected]:/var/snap/lxd/common/lxd/storage-pools/default/containers/lxc-server/rootfs/
vim /var/snap/lxd/common/lxd/storage-pools/default/containers/lxc-server/rootfs/etc/network/interfaces
auto lo
iface lo inet loopback
source /etc/network/interfaces.d/*.cfg
mkdir /var/snap/lxd/common/lxd/storage-pools/default/containers/lxc-server/rootfs/etc/network/interfaces.d/
vim /var/snap/lxd/common/lxd/storage-pools/default/containers/lxc-server/rootfs/etc/network/interfaces.d/eth0.cfg
# The primary network interface
auto eth0
iface eth0 inet dhcp
lxc start lxc-server
For sure you need to stop MySQL/PostgreSQL before rsync or if huge database you can resync database after syncing data from OpenVZ server
To keep php7.2 default
before apt change priority value 72 -> 92 to keep this value biggest
/var/lib/dpkg/alternatives/php
/var/lib/dpkg/alternatives/php-fpm.sock
update-alternatives --query php
Name: php
Link: /usr/bin/php
Slaves:
php.1.gz /usr/share/man/man1/php.1.gz
Status: auto
Best: /usr/bin/php7.2
Value: /usr/bin/php7.2
Alternative: /usr/bin/php7.2
Priority: 92
Slaves:
php.1.gz /usr/share/man/man1/php7.2.1.gz
Alternative: /usr/bin/php7.4
Priority: 74
Slaves:
php.1.gz /usr/share/man/man1/php7.4.1.gz
iptables -t nat -I POSTROUTING 1 ! -o lo -j MASQUERADE
iptables -t nat -D POSTROUTING -j MASQUERADE
exclude local interface should fix systemd-resolved
grep -n "Table structure" database.sql sed -n '[starting_line_number],[ending_line_number] p' database.sql.sql > database_one_table.sql