Chapter 18 . Replication 543 Examination of the
Chapter 18 . Replication 543 Examination of the output in Figure 18-13 shows that I have a problem with a slave in the replication set. It just so happens that the error leads directly into the next section of the chapter. Before you do so, however, you may have to make another improvement on the monitoring PHP script adding a refresh to the page so that it automatically runs every N seconds or minutes. Figure 18-13: The monitoring application built into PHP Kick-starting Replication Replication has become quite a robust addition to MySQL. As part of my work with MySQL, I administer a large MySQL replication cluster. Unfortunately, the cluster is built on an older version of MySQL and it s too vital to update in place. Accordingly (though the actual replication is acceptably stable), I ve had to get by without the benefit of some of the better and more recent replication commands shown in this chapter. This section examines what can be done if replication goes wrong including commands and statements that can kick-start replication.
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