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  1. MariaDB Server
  2. MDEV-21761

[ERROR] WSREP: Failed to create a new provider '/usr/lib/libgalera_smm.so' with options '':Failed to load wsrep library

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      I want to set up galera cluster with MariaDB 10.5, galera-4.
      I follow the instructions to install MariaDB 10.5 from this site https://downloads.mariadb.org/mariadb/repositories/#distro=Ubuntu&distro_release=bionic--ubuntu_bionic&mirror=biznetgio&version=10.5

      I change configuration in my.cnf, then run command ```mariadb-install-db --defaults-file=/etc/mysql/my.cnf```
      Status Ok, db is running well.

      I add this lines to my.cnf :
      ```##clustering db configuration
      wsrep_on = ON
      wsrep_provider = /usr/lib/libgalera_smm.so
      wsrep_cluster_name = galera-test
      wsrep_cluster_address = gcomm://192.168.56.107,192.168.56.108, 192.168.56.109
      wsrep_sst_method = mariabackup
      wsrep_sst_auth = clusteradmin:clusteradmin789
      wsrep_node_address = 192.168.56.107
      wsrep_node_name = node107
      wsrep_OSU_method = TOI
      wsrep_slave_threads = 21
      ```
      then stop mysql service.
      I run command : ```galera_new_cluster```
      After run the command, appears errors below :
      ```Job for mariadb.service failed because the control process exited with error code.
      See "systemctl status mariadb.service" and "journalctl -xe" for details.```

      error in log file :
      ```2020-02-18 9:42:02 0 [Note] WSREP: Loading provider /usr/lib/galera/libgalera_smm.so initial position: 00000000-0000-0000-0000-000000000000:-1
      wsrep loader: [INFO] wsrep_load(): loading provider library '/usr/lib/galera/libgalera_smm.so'
      wsrep loader: [ERROR] provider interface version mismatch: need '26', found '27dev'
      2020-02-18 9:42:02 0 [ERROR] WSREP: Failed to create a new provider '/usr/lib/galera/libgalera_smm.so' with options '':Failed to load wsrep library
      2020-02-18 9:42:02 0 [ERROR] WSREP: Failed to load provider
      2020-02-18 9:42:02 0 [ERROR] Aborting
      2020-02-18 10:22:50 0 [Warning] Buffered warning: Performance schema disabled (reason: init failed).
      2020-02-18 10:22:50 0 [Note] WSREP: Loading provider /usr/lib/libgalera_smm.so initial position: 00000000-0000-0000-0000-000000000000:-1
      wsrep loader: [INFO] wsrep_load(): loading provider library '/usr/lib/libgalera_smm.so'
      wsrep loader: [ERROR] provider interface version mismatch: need '26', found '27dev'
      2020-02-18 10:22:50 0 [ERROR] WSREP: Failed to create a new provider '/usr/lib/libgalera_smm.so' with options '':Failed to load wsrep library
      2020-02-18 10:22:50 0 [ERROR] WSREP: Failed to load provider
      2020-02-18 10:22:50 0 [ERROR] Aborting```

      Here some details :
      ```# ls -lthr /usr/lib/libgalera_smm.so
      lrwxrwxrwx 1 root root 23 Jan 30 15:52 /usr/lib/libgalera_smm.so -> galera/libgalera_smm.s```

      ```# dpkg -l | grep mariadb
      ii libmariadb3:amd64 1:10.5.1+maria~bionic amd64 MariaDB database client library
      ii mariadb-backup 1:10.5.1+maria~bionic amd64 Backup tool for MariaDB server
      ii mariadb-client-10.5 1:10.5.1+maria~bionic amd64 MariaDB database client binaries
      ii mariadb-client-core-10.5 1:10.5.1+maria~bionic amd64 MariaDB database core client binaries
      ii mariadb-common 1:10.5.1+maria~bionic all MariaDB database common files (e.g. /etc/mysql/conf.d/mariadb.cnf)
      ii mariadb-server-10.5 1:10.5.1+maria~bionic amd64 MariaDB database server binaries
      ii mariadb-server-core-10.5 1:10.5.1+maria~bionic amd64 MariaDB database core server files```

      ```# dpkg -l | grep galera
      ii galera-4 26.4.4-bionic amd64 Replication framework for transactional applications```

      I test the API provider on MariaDB 10.4. everything is good, the provider can be loaded.
      I have no idea why it error on MariaDB 10.5.

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            Assignee:
            jplindst Jan Lindström
            Reporter:
            Nonashopiee Enjel
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