After power loss mysql can't start, bootstrap works

MySQL & MariaDB Percona XtraDB Cluster 5.x
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6

Now it’s a little better, but what does it mean:

mysql.service - Percona XtraDB Cluster
     Loaded: loaded (/lib/systemd/system/mysql.service; enabled; vendor preset: enabled)
     Active: active (running) since Tue 2023-12-19 21:42:02 CET; 6min ago
    Process: 2654 ExecStartPre=/usr/bin/mysql-systemd start-pre (code=exited, status=0/SUCCESS)
    Process: 2707 ExecStartPre=/usr/bin/mysql-systemd check-grastate (code=exited, status=0/SUCCESS)
    Process: 2737 ExecStartPre=/bin/sh -c systemctl unset-environment _WSREP_START_POSITION (code=exited, status=0/SUCCESS)
    Process: 2739 ExecStartPre=/bin/sh -c VAR=`bash /usr/bin/mysql-systemd galera-recovery`; [ $? -eq 0 ] && systemctl set-environment _WSREP_START_POSITION=$VAR || exit 1 (c>
    Process: 4158 ExecStartPost=/bin/sh -c systemctl unset-environment _WSREP_START_POSITION (code=exited, status=0/SUCCESS)
    Process: 4161 ExecStartPost=/usr/bin/mysql-systemd start-post $MAINPID (code=exited, status=0/SUCCESS)
   Main PID: 2865 (mysqld)
     Status: "Server is operational"
      Tasks: 64 (limit: 19050)
     Memory: 1.5G
     CGroup: /system.slice/mysql.service
             └─2865 /usr/sbin/mysqld --wsrep_start_position=d005ce72-f111-11eb-975e-a3aadeac8607:271691170

Dec 19 21:36:20 server3 systemd[1]: Starting Percona XtraDB Cluster...
Dec 19 21:41:56 server3 systemd[1]: mysql.service: Got notification message from PID 3932, but reception only permitted for main PID 2865
Dec 19 21:41:56 server3 systemd[1]: mysql.service: Got notification message from PID 3976, but reception only permitted for main PID 2865
Dec 19 21:41:58 server3 systemd[1]: mysql.service: Got notification message from PID 3976, but reception only permitted for main PID 2865
Dec 19 21:41:58 server3 systemd[1]: mysql.service: Got notification message from PID 3976, but reception only permitted for main PID 2865
Dec 19 21:42:00 server3 systemd[1]: mysql.service: Got notification message from PID 3976, but reception only permitted for main PID 2865
Dec 19 21:42:02 server3 mysql-systemd[4161]:  SUCCESS!
Dec 19 21:42:02 server3 systemd[1]: Started Percona XtraDB Cluster.

on the second server when is running bootstrap is:

 mysql@bootstrap.service - Percona XtraDB Cluster with config /etc/default/mysql.bootstrap
     Loaded: loaded (/lib/systemd/system/mysql@.service; disabled; vendor preset: enabled)
     Active: active (running) since Tue 2023-12-19 21:28:22 CET; 35min ago
    Process: 5724 ExecStartPre=/usr/bin/mysql-systemd start-pre (code=exited, status=0/SUCCESS)
    Process: 5772 ExecStartPre=/bin/sh -c systemctl unset-environment _WSREP_START_POSITION (code=exited, status=0/SUCCESS)
    Process: 5779 ExecStartPre=/bin/sh -c VAR=`bash /usr/bin/mysql-systemd galera-recovery`; [ $? -eq 0 ] && systemctl set-environment _WSR>
    Process: 5913 ExecStartPost=/bin/sh -c systemctl unset-environment _WSREP_START_POSITION (code=exited, status=0/SUCCESS)
    Process: 5915 ExecStartPost=/usr/bin/mysql-systemd start-post $MAINPID (code=exited, status=0/SUCCESS)
   Main PID: 5828 (mysqld)
     Status: "Server is operational"
      Tasks: 70 (limit: 19050)
     Memory: 1.2G
     CGroup: /system.slice/system-mysql.slice/mysql@bootstrap.service
             └─5828 /usr/sbin/mysqld --wsrep-new-cluster --wsrep_start_position=d005ce72-f111-11eb-975e-a3aadeac8607:271691167

Dec 19 21:28:20 server2 systemd[1]: Starting Percona XtraDB Cluster with config /etc/default/mysql.bootstrap...
Dec 19 21:28:22 server2 mysql-systemd[5915]:  SUCCESS!
Dec 19 21:28:22 server2 systemd[1]: Started Percona XtraDB Cluster with config /etc/default/mysql.bootstrap.

AND, only on the one server looks great:

mysql.service - Percona XtraDB Cluster
     Loaded: loaded (/lib/systemd/system/mysql.service; enabled; vendor preset: enabled)
     Active: active (running) since Tue 2023-12-19 21:59:59 CET; 8min ago
    Process: 960 ExecStartPre=/usr/bin/mysql-systemd start-pre (code=exited, status=0/SUCCESS)
    Process: 1095 ExecStartPre=/usr/bin/mysql-systemd check-grastate (code=exited, status=0/SUCCESS)
    Process: 1135 ExecStartPre=/bin/sh -c systemctl unset-environment _WSREP_START_POSITION (code=exited, status=0/SUCCESS)
    Process: 1137 ExecStartPre=/bin/sh -c VAR=`bash /usr/bin/mysql-systemd galera-recovery`; [ $? -eq 0 ] && systemctl set-en>
    Process: 1995 ExecStartPost=/bin/sh -c systemctl unset-environment _WSREP_START_POSITION (code=exited, status=0/SUCCESS)
    Process: 1997 ExecStartPost=/usr/bin/mysql-systemd start-post $MAINPID (code=exited, status=0/SUCCESS)
   Main PID: 1195 (mysqld)
     Status: "Server is operational"
      Tasks: 69 (limit: 19050)
     Memory: 1.2G
     CGroup: /system.slice/mysql.service
             └─1195 /usr/sbin/mysqld --wsrep_start_position=d005ce72-f111-11eb-975e-a3aadeac8607:271691205

Dec 19 21:59:53 server1 systemd[1]: Starting Percona XtraDB Cluster...
Dec 19 21:59:59 server1 mysql-systemd[1997]:  SUCCESS!
Dec 19 21:59:59 server1 systemd[1]: Started Percona XtraDB Cluster.