How can I configure apparmor to allow mariadb load a shared library?





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After a routine update yesterday, MariaDB would not start because a shared library file is not loading because it is being blocked by apparmor.



Here's the output from the journalctl -xe



Apr 17 11:44:45 pbts-academic audit[10349]: AVC apparmor="DENIED" operation="file_mmap" profile="/usr/sbin/mysqld" name="/usr/lib/x86_64-linux-gnu/liblz4.so.1.7.1"
Apr 17 11:44:45 pbts-academic kernel: audit: type=1400 audit(1555472685.956:79): apparmor="DENIED" operation="file_mmap" profile="/usr/sbin/mysqld" name="/usr/lib/x86_64-linux-gnu/liblz4.so.1.7.1"
Apr 17 11:44:45 pbts-academic mysqld[10349]: /usr/sbin/mysqld: error while loading shared libraries: liblz4.so.1: failed to map segment from shared object
Apr 17 11:44:45 pbts-academic systemd[1]: mariadb.service: Main process exited, code=exited, status=127/n/a
Apr 17 11:44:45 pbts-academic systemd[1]: mariadb.service: Failed with result 'exit-code'.
Apr 17 11:44:45 pbts-academic systemd[1]: Failed to start MariaDB 10.3.14 database server.
-- Subject: Unit mariadb.service has failed
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- Unit mariadb.service has failed.
--
-- The result is RESULT.


Thanks in advance.










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    After a routine update yesterday, MariaDB would not start because a shared library file is not loading because it is being blocked by apparmor.



    Here's the output from the journalctl -xe



    Apr 17 11:44:45 pbts-academic audit[10349]: AVC apparmor="DENIED" operation="file_mmap" profile="/usr/sbin/mysqld" name="/usr/lib/x86_64-linux-gnu/liblz4.so.1.7.1"
    Apr 17 11:44:45 pbts-academic kernel: audit: type=1400 audit(1555472685.956:79): apparmor="DENIED" operation="file_mmap" profile="/usr/sbin/mysqld" name="/usr/lib/x86_64-linux-gnu/liblz4.so.1.7.1"
    Apr 17 11:44:45 pbts-academic mysqld[10349]: /usr/sbin/mysqld: error while loading shared libraries: liblz4.so.1: failed to map segment from shared object
    Apr 17 11:44:45 pbts-academic systemd[1]: mariadb.service: Main process exited, code=exited, status=127/n/a
    Apr 17 11:44:45 pbts-academic systemd[1]: mariadb.service: Failed with result 'exit-code'.
    Apr 17 11:44:45 pbts-academic systemd[1]: Failed to start MariaDB 10.3.14 database server.
    -- Subject: Unit mariadb.service has failed
    -- Defined-By: systemd
    -- Support: http://www.ubuntu.com/support
    --
    -- Unit mariadb.service has failed.
    --
    -- The result is RESULT.


    Thanks in advance.










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      After a routine update yesterday, MariaDB would not start because a shared library file is not loading because it is being blocked by apparmor.



      Here's the output from the journalctl -xe



      Apr 17 11:44:45 pbts-academic audit[10349]: AVC apparmor="DENIED" operation="file_mmap" profile="/usr/sbin/mysqld" name="/usr/lib/x86_64-linux-gnu/liblz4.so.1.7.1"
      Apr 17 11:44:45 pbts-academic kernel: audit: type=1400 audit(1555472685.956:79): apparmor="DENIED" operation="file_mmap" profile="/usr/sbin/mysqld" name="/usr/lib/x86_64-linux-gnu/liblz4.so.1.7.1"
      Apr 17 11:44:45 pbts-academic mysqld[10349]: /usr/sbin/mysqld: error while loading shared libraries: liblz4.so.1: failed to map segment from shared object
      Apr 17 11:44:45 pbts-academic systemd[1]: mariadb.service: Main process exited, code=exited, status=127/n/a
      Apr 17 11:44:45 pbts-academic systemd[1]: mariadb.service: Failed with result 'exit-code'.
      Apr 17 11:44:45 pbts-academic systemd[1]: Failed to start MariaDB 10.3.14 database server.
      -- Subject: Unit mariadb.service has failed
      -- Defined-By: systemd
      -- Support: http://www.ubuntu.com/support
      --
      -- Unit mariadb.service has failed.
      --
      -- The result is RESULT.


      Thanks in advance.










      share|improve this question







      New contributor




      mhacleth is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.












      After a routine update yesterday, MariaDB would not start because a shared library file is not loading because it is being blocked by apparmor.



      Here's the output from the journalctl -xe



      Apr 17 11:44:45 pbts-academic audit[10349]: AVC apparmor="DENIED" operation="file_mmap" profile="/usr/sbin/mysqld" name="/usr/lib/x86_64-linux-gnu/liblz4.so.1.7.1"
      Apr 17 11:44:45 pbts-academic kernel: audit: type=1400 audit(1555472685.956:79): apparmor="DENIED" operation="file_mmap" profile="/usr/sbin/mysqld" name="/usr/lib/x86_64-linux-gnu/liblz4.so.1.7.1"
      Apr 17 11:44:45 pbts-academic mysqld[10349]: /usr/sbin/mysqld: error while loading shared libraries: liblz4.so.1: failed to map segment from shared object
      Apr 17 11:44:45 pbts-academic systemd[1]: mariadb.service: Main process exited, code=exited, status=127/n/a
      Apr 17 11:44:45 pbts-academic systemd[1]: mariadb.service: Failed with result 'exit-code'.
      Apr 17 11:44:45 pbts-academic systemd[1]: Failed to start MariaDB 10.3.14 database server.
      -- Subject: Unit mariadb.service has failed
      -- Defined-By: systemd
      -- Support: http://www.ubuntu.com/support
      --
      -- Unit mariadb.service has failed.
      --
      -- The result is RESULT.


      Thanks in advance.







      apparmor mariadb






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