Error when install percona xtradb 57

im val,

i need to upgrade my pxc from 56 to 57 without removing data dir,
i do this step :

  1. Make sure that all nodes are synchronized >>>clustercheck
  2. Stop mysql >>> /etc/init.d/mysql stop
  3. Remove config >>> rm -rf /etc/mysql/my.cnf*
  4. install percona >> apt-get install percona-xtradb-cluster-57

when i intstall i get msg error :

Job for mysql.service failed. See ‘systemctl status mysql.service’ and ‘journalctl -xn’ for details.
invoke-rc.d: initscript mysql, action “start” failed.
dpkg: error processing package percona-xtradb-cluster-server-5.7 (–configure):
subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of percona-xtradb-cluster-57:
percona-xtradb-cluster-57 depends on percona-xtradb-cluster-server-5.7 (>= 5.7.25-31.35-1.jessie); however:
Package percona-xtradb-cluster-server-5.7 is not configured yet.

dpkg: error processing package percona-xtradb-cluster-57 (–configure):
dependency problems - leaving unconfigured
Processing triggers for libc-bin (2.19-18+deb8u10) …
Processing triggers for systemd (215-17+deb8u7) …
Errors were encountered while processing:
E: Sub-process /usr/bin/dpkg returned an error code (1)

would you help me to solve this ??

Hi val

Did you follow the steps in this guide?

If you did, and you are still encountering these problems… [LIST=1]
[]Could you upload the mysql.conf files for each node please?
]Also log file(s) and details of the server environment you are on?