wget https://repo.percona.com/apt/percona-release_latest.$(lsb_release -sc)_all.deb
sudo dpkg -i percona-release_latest.$(lsb_release -sc)_all.deb
sudo apt-get update

== mysql server
sudo apt-get install percona-server-server-5.7



==== xtradb cluster
apt install percona-xtradb-cluster-57
nano /etc/systemd/system/mysql.service
[Unit]
Description=Percona XtraDB Cluster daemon
After=network.target
After=syslog.target

[Install]
WantedBy=multi-user.target

[Service]
User=mysql
Group=mysql
Type=forking
TimeoutSec=0
PermissionsStartOnly=true
ExecStart=/etc/init.d/mysql start
ExecStop=/usr/bin/mysqladmin shutdown
ExecReload=/etc/init.d/mysql reload
EnvironmentFile=-/etc/default/mysql
LimitNOFILE = 5000
Restart=on-failure
RestartSec=3
RestartPreventExitStatus=1
PrivateTmp=false

systemctl daemon-reload
systemctl enable mysql


==== pmm
apt-get install pmm-client