Disabling AppArmor for installing PXC on ubuntu 16.04

I haven’t installed PXC on other nodes yet! Fortunately!

/etc/mysql/my.cnf

/etc/mysql/percona-xtradb-cluster.conf.d/mysqld.cnf


# Template my.cnf for PXC
# Edit to your requirements.
[mysqld]
server-id=1
datadir=/var/lib/mysql
socket=/var/run/mysqld/mysqld.sock
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
log-bin
log_slave_updates
expire_logs_days=7

# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0

thanks for your help.