Merge pull request #53 from desec-io/20170622_fix_mysql_rootlogin

fix(db): init command violated unique constraint

dbapi/initdb.d/99-finish.sql

@@ -1,4 +1,5 @@
 -- Narrow down root logins
 INSTALL PLUGIN unix_socket SONAME 'auth_socket';
-UPDATE mysql.user SET Host = 'localhost', plugin = 'unix_socket' WHERE User = 'root';
+DELETE FROM mysql.user WHERE User = 'root' AND Host != 'localhost';
+UPDATE mysql.user SET plugin = 'unix_socket' WHERE User = 'root' AND Host = 'localhost';
 FLUSH PRIVILEGES;

dblord/initdb.d/99-finish.sql

@@ -1,4 +1,5 @@
 -- Narrow down root logins
 INSTALL PLUGIN unix_socket SONAME 'auth_socket';
-UPDATE mysql.user SET Host = 'localhost', plugin = 'unix_socket' WHERE User = 'root';
+DELETE FROM mysql.user WHERE User = 'root' AND Host != 'localhost';
+UPDATE mysql.user SET plugin = 'unix_socket' WHERE User = 'root' AND Host = 'localhost';
 FLUSH PRIVILEGES;

dbmaster/initdb.d/99-finish.sql

@@ -1,4 +1,5 @@
 -- Narrow down root logins
 INSTALL PLUGIN unix_socket SONAME 'auth_socket';
-UPDATE mysql.user SET Host = 'localhost', plugin = 'unix_socket' WHERE User = 'root';
+DELETE FROM mysql.user WHERE User = 'root' AND Host != 'localhost';
+UPDATE mysql.user SET plugin = 'unix_socket' WHERE User = 'root' AND Host = 'localhost';
 FLUSH PRIVILEGES;