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voici le résultat:
==> /var/lib/mysql/didiercl.me.err <==
171224 13:54:29 [ERROR] Fatal error: Can't open and lock privilege tables: Incorrect file format 'host'
171224 13:54:30 mysqld_safe mysqld from pid file /var/lib/mysql/didiercl.me.pid ended
171224 15:49:38 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
171224 15:49:38 [Note] /usr/sbin/mysqld (mysqld 10.0.32-MariaDB-0+deb8u1) starting as process 8203 ...
171224 15:49:38 [Note] InnoDB: innodb_empty_free_list_algorithm has been changed to legacy because of small buffer pool size. In order to use backoff, increase buffer pool at least up to 20MB.
171224 15:49:38 [Note] InnoDB: Using mutexes to ref count buffer pool pages
171224 15:49:38 [Note] InnoDB: The InnoDB memory heap is disabled
171224 15:49:38 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
171224 15:49:38 [Note] InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier
171224 15:49:38 [Note] InnoDB: Compressed tables use zlib 1.2.8
171224 15:49:38 [Note] InnoDB: Using Linux native AIO
171224 15:49:38 [Note] InnoDB: Not using CPU crc32 instructions
171224 15:49:38 [Note] InnoDB: Initializing buffer pool, size = 128.0M
171224 15:49:38 [Note] InnoDB: Completed initialization of buffer pool
171224 15:49:38 [Note] InnoDB: Highest supported file format is Barracuda.
171224 15:49:38 [Note] InnoDB: The log sequence numbers 548999839 and 548999839 in ibdata files do not match the log sequence number 549033522 in the ib_logfiles!
171224 15:49:38 [Note] InnoDB: Restoring possible half-written data pages from the doublewrite buffer...
171224 15:49:38 [Note] InnoDB: 128 rollback segment(s) are active.
171224 15:49:38 [Note] InnoDB: Waiting for purge to start
171224 15:49:38 [Note] InnoDB: Percona XtraDB (http://www.percona.com) 5.6.36-82.1 started; log sequence number 549033522
171224 15:49:39 [Note] Plugin 'FEEDBACK' is disabled.
171224 15:49:39 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
171224 15:49:39 [Note] Server socket created on IP: '::'.
171224 15:49:39 [ERROR] Fatal error: Can't open and lock privilege tables: Incorrect file format 'host'
171224 15:49:39 mysqld_safe mysqld from pid file /var/lib/mysql/didiercl.me.pid ended
171224 15:57:16 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
171224 15:57:16 [Note] /usr/sbin/mysqld (mysqld 10.0.32-MariaDB-0+deb8u1) starting as process 8612 ...
171224 15:57:16 [Note] InnoDB: innodb_empty_free_list_algorithm has been changed to legacy because of small buffer pool size. In order to use backoff, increase buffer pool at least up to 20MB.
171224 15:57:16 [Note] InnoDB: Using mutexes to ref count buffer pool pages
171224 15:57:16 [Note] InnoDB: The InnoDB memory heap is disabled
171224 15:57:16 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
171224 15:57:16 [Note] InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier
171224 15:57:16 [Note] InnoDB: Compressed tables use zlib 1.2.8
171224 15:57:16 [Note] InnoDB: Using Linux native AIO
171224 15:57:16 [Note] InnoDB: Not using CPU crc32 instructions
171224 15:57:16 [Note] InnoDB: Initializing buffer pool, size = 128.0M
171224 15:57:16 [Note] InnoDB: Completed initialization of buffer pool
171224 15:57:16 [Note] InnoDB: Highest supported file format is Barracuda.
171224 15:57:16 [Note] InnoDB: The log sequence numbers 548999839 and 548999839 in ibdata files do not match the log sequence number 549033522 in the ib_logfiles!
171224 15:57:16 [Note] InnoDB: Restoring possible half-written data pages from the doublewrite buffer...
171224 15:57:17 [Note] InnoDB: 128 rollback segment(s) are active.
171224 15:57:17 [Note] InnoDB: Waiting for purge to start
171224 15:57:17 [Note] InnoDB: Percona XtraDB (http://www.percona.com) 5.6.36-82.1 started; log sequence number 549033522
171224 15:57:17 [Note] Plugin 'FEEDBACK' is disabled.
171224 15:57:17 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
171224 15:57:17 [Note] Server socket created on IP: '::'.
171224 15:57:17 [ERROR] Fatal error: Can't open and lock privilege tables: Incorrect file format 'host'
171224 15:57:17 mysqld_safe mysqld from pid file /var/lib/mysql/didiercl.me.pid ended
==> /var/lib/mysql/yunohost.yunohost.org.err <==
170327 22:07:38 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
170327 22:07:39 [Note] /usr/sbin/mysqld (mysqld 10.0.30-MariaDB-0+deb8u1) starting as process 18090 ...
170327 22:07:39 [Note] InnoDB: Using mutexes to ref count buffer pool pages
170327 22:07:39 [Note] InnoDB: The InnoDB memory heap is disabled
170327 22:07:39 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
170327 22:07:39 [Note] InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier
170327 22:07:39 [Note] InnoDB: Compressed tables use zlib 1.2.8
170327 22:07:39 [Note] InnoDB: Using Linux native AIO
170327 22:07:39 [Note] InnoDB: Not using CPU crc32 instructions
170327 22:07:39 [Note] InnoDB: Initializing buffer pool, size = 128.0M
170327 22:07:39 [Note] InnoDB: Completed initialization of buffer pool
170327 22:07:39 [Note] InnoDB: Highest supported file format is Barracuda.
170327 22:07:39 [Note] InnoDB: 128 rollback segment(s) are active.
170327 22:07:39 [Note] InnoDB: Waiting for purge to start
170327 22:07:39 [Note] InnoDB: Percona XtraDB (http://www.percona.com) 5.6.35-80.0 started; log sequence number 1616827
170327 22:07:39 [Note] Plugin 'FEEDBACK' is disabled.
170327 22:07:39 [Note] Server socket created on IP: '::'.
170327 22:07:39 [Note] /usr/sbin/mysqld: ready for connections.
Version: '10.0.30-MariaDB-0+deb8u1' socket: '/var/run/mysqld/mysqld.sock' port: 3306 (Debian)