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services.mysql: wait for galera cluster sync to be done

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6543 2025-02-14 13:28:02 +01:00
parent 0ce9de036c
commit 41ec4243d1
1 changed files with 19 additions and 0 deletions
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19
nixos/modules/services/databases/mysql.nix
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@ -433,6 +433,25 @@ in
done
''}
${lib.optionalString isMariaDB ''
# If MariaDB is used in an Galera cluster, we have to check if the sync is done,
# or it will fail to init the database while joining, so we get in an broken non recoverable state
# so we wait until we have an synced state
if ${cfg.package}/bin/mysql -u ${superUser} -N -e "SHOW VARIABLES LIKE 'wsrep_on'" 2>/dev/null | ${lib.getExe' pkgs.gnugrep "grep"} -q 'ON'; then
echo "Galera cluster detected, waiting for node to be synced..."
while true; do
STATE=$(${cfg.package}/bin/mysql -u ${superUser} -N -e "SHOW STATUS LIKE 'wsrep_local_state_comment'" | ${lib.getExe' pkgs.gawk "awk"} '{print $2}')
if [ "$STATE" = "Synced" ]; then
echo "Node is synced"
break
else
echo "Current state: $STATE - Waiting for 1 second..."
sleep 1
fi
done
fi
''}
if [ -f ${cfg.dataDir}/mysql_init ]
then
# While MariaDB comes with a 'mysql' super user account since 10.4.x, MySQL does not