Erro ao rodar o ansible-playbook -i /vagrant/configs/ansible/hosts /vagrant/configs/ansible/playbook.yml

Seguindo as instruções do curso, ao executar tal comando, dar este erro:

fatal: [192.168.1.22]: UNREACHABLE! => {"changed": false, "msg": "Failed to connect to the host via ssh: ssh: connect to host 192.168.1.22 port 22: No route to host", "unreachable": true}

PLAY RECAP ************************************************************************************************************
192.168.1.22               : ok=0    changed=0    unreachable=1    failed=0    skipped=0    rescued=0    ignored=0

Já dei uma olhada nos demais posts a respeito, mas, nenhuma vitória.

A seguir, minha hosts:

[mysqlserver]
192.168.1.22

[mysqlserver:vars]
ansible_ssh_user=vagrant
ansible_ssh_pass=vagrant
ansible_ssh_private_key_file=/home/vagrant/id_bionic
ansible_python_interpreter=/usr/bin/python3
ansible_ssh_common_args='-o StrictHostKeyChecking=no'

playbooks.yml :

- hosts: all
  handlers:
    - name: restart mysql
      service:
        name: mysql
        state: restarted
      become: yes

  tasks:
    - name: 'Instalar MySQL Server'
      apt:
        update_cache: yes
        cache_valid_time: 3600 #1 hora
        name: ["mysql-server-5.7", "python3-mysqldb"]
        state: latest
      become: yes

    - name: 'Criar usuario no MySQL'
      mysql_user:
        login_user: root
        name: phpuser
        password: pass
        priv: '*.*:ALL'
        host: '%'
        state: present
      become: yes

    - name: 'Copiar arquivo mysqld.cnf'
      copy:
        src: /vagrant/configs/mysqld.cnf
        dest: /etc/mysql/mysql.conf.d/mysqld.cnf
        owner: root
        group: root
        mode: 0644
      become: yes
      notify:
        - restart mysql

E, o vagrantfile:

$script_mysql = <<-SCRIPT
    apt-get update && \
    apt-get install -y mysql-server-5.7 && \
    mysql -e "create user 'phpuser'@'%' identified by 'pass';"
SCRIPT

Vagrant.configure("2") do |config|
    config.vm.box = "ubuntu/bionic64"

config.vm.define "mysqldb" do |mysql|
mysql.vm.network "public_network", ip: "192.168.1.24"

mysql.vm.provision "shell",
    inline: "cat /configs/id_bionic.pub >> .ssh/authorized_keys"
mysql.vm.provision "shell", inline: $script_mysql
mysql.vm.provision "shell",
    inline: "cat /configs/mysqld.cnf > /etc/mysql/mysql.conf.d/mysqld.cnf"
mysql.vm.provision "shell", inline: "service mysql restart"

     mysql.vm.synced_folder "./configs", "/configs"
     mysql.vm.synced_folder ".", "/vagrant", disabled: true
end

config.vm.define "phpweb" do |phpweb|
        phpweb.vm.network "forwarded_port", guest: 8888, host: 8888
        phpweb.vm.network "public_network", ip: "192.168.1.25"

        phpweb.vm.provision "shell",
            inline: "apt-get update && apt-get install -y puppet"

        phpweb.vm.provision "puppet" do |puppet|
            puppet.manifests_path = "./configs/manifests"
            puppet.manifest_file = "phpweb.pp"
        end
    end

    config.vm.define "mysqlserver" do |mysqlserver|
    mysqlserver.vm.network "public_network", ip: "192.168.1.22"

    mysqlserver.vm.provision "shell",
    inline: "cat /vagrant/configs/id_bionic.pub >> .ssh/authorized_keys"
end

config.vm.define "ansible" do |ansible|
    ansible.vm.network "public_network", ip: "192.168.1.26"

    ansible.vm.provision "shell",
      inline: "cp /vagrant/id_bionic  /home/vagrant && \
              chmod 600 /home/vagrant/id_bionic && \
              chown vagrant:vagrant /home/vagrant/id_bionic"

    ansible.vm.provision "shell",
        inline: "apt-get update && \
                 apt-get install -y software-properties-common && \
                 apt-add-repository --yes --update ppa:ansible/ansible && \
                 apt-get install -y ansible"
end
end

Peço ajuda, pois estou travado nessa aula e não posso prosseguir com o aprendizado sem solucionar isso. Obrigado.