A server configuration is a set of instructions that tells a computer how to operate. The instructions can include the type of hardware to use, the software to install, and the settings to use. A server configuration can be used to set up a new computer, or to change the settings on an existing computer. Here is the configuration I usually use for my fresh new sever:

Host

declare hosts

Code

/etc/hosts

Exemple:

173.249.31.236 node2
144.91.95.252 node1

change hostname

Edit hostname files

vim /etc/hostname
vim /etc/hosts

Change SSH

Open the /etc/ssh/sshd_config file
Locate the following line:
```
 Port 7823
```
Restart the SSH service using the appropriate command for your Linux distribution:
```
 service ssh restart
```

Docker

  $ apt install docker docker-compose -y
  $ sudo systemctl start docker
  $ sudo systemctl enable docker
  $ sudo usermod -aG docker $USER
  $ sudo newgrp docker
  $ sudo usermod -aG docker [non-root user]

Swarm

    docker swarm init --advertise-addr 144.91.95.252

Gluster

install in all nodes:

 sudo apt-get install software-properties-common -y
 sudo apt-get update

 sudo apt install glusterfs-server -y

 sudo systemctl start glusterd
 sudo systemctl enable glusterd

generate ssh
```
 ssh-keygen -t rsa
```

probe “master only”

 gluster peer probe node2;
 gluster pool list

create volume “all machines”
```
 sudo mkdir -p /gluster/swarm
```

“master only”

    sudo gluster volume create swarm-gfs replica 2 node1:/gluster/swarm node2:/gluster/swarm force

start volume

 sudo gluster volume start swarm-gfs

 echo 'localhost:/swarm-gfs /mnt glusterfs defaults,_netdev,backupvolfile-server=localhost 0 0' >> /etc/fstab
 mount.glusterfs localhost:/swarm-gfs /mnt
 chown -R root:docker /mnt

Portainer

ON manager

    curl -L https://downloads.portainer.io/portainer-agent-stack.yml -o portainer-agent-stack.yml
    
    docker stack deploy         --compose-file=portainer-agent-stack.yml portainer

Vps Config