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nixos/mysql: properly configure mariadb for galera recovery

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This commit is contained in:
Aaron Andersen 2021-02-17 14:16:26 -05:00
parent dc0e2bfd78
commit 4b9262786d
1 changed files with 13 additions and 2 deletions
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15
nixos/modules/services/databases/mysql.nix
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@ -375,6 +375,18 @@ in
fi
'';
script = ''
# https://mariadb.com/kb/en/getting-started-with-mariadb-galera-cluster/#systemd-and-galera-recovery
if test -n "''${_WSREP_START_POSITION}"; then
if test -e "${cfg.package}/bin/galera_recovery"; then
VAR=$(cd ${cfg.package}/bin/..; ${cfg.package}/bin/galera_recovery); [[ $? -eq 0 ]] && export _WSREP_START_POSITION=$VAR || exit 1
fi
fi
# The last two environment variables are used for starting Galera clusters
exec ${cfg.package}/bin/mysqld --defaults-file=/etc/my.cnf ${mysqldOptions} $_WSREP_NEW_CLUSTER $_WSREP_START_POSITION
'';
postStart = let
# The super user account to use on *first* run of MySQL server
superUser = if isMariaDB then cfg.user else "root";
@ -481,8 +493,7 @@ in
Type = if hasNotify then "notify" else "simple";
Restart = "on-abort";
RestartSec = "5s";
# The last two environment variables are used for starting Galera clusters
ExecStart = "${cfg.package}/bin/mysqld --defaults-file=/etc/my.cnf ${mysqldOptions} $_WSREP_NEW_CLUSTER $_WSREP_START_POSITION";
# User and group
User = cfg.user;
Group = cfg.group;