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MXS-1446: Store more detailed event information

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The timestamp of the last change from passive to active is now
tracked. This, with the timestamps of the last master_down and master_up
events, allows detection of cases when MaxScale was failed over but the
failover was not done.

Currently, only a warning is logged if no new master has appeared within
90 seconds of a master_down event and MaxScale was set to active from
passive.

The last event and when the event was triggered is now shown for all
servers. The latest change from passive to active is also shown.
This commit is contained in:
Markus Mäkelä
2017-09-26 09:03:49 +03:00
parent 3e1d89ff17
commit ef2ee38ccf
9 changed files with 108 additions and 16 deletions
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include/maxscale/server.h
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@ -135,6 +135,8 @@ typedef struct server
uint8_t charset; /**< Default server character set */
bool is_active; /**< Server is active and has not been "destroyed" */
bool proxy_protocol; /**< Send proxy-protocol header to backend when connecting client sessions. */
int last_event; /**< The last event that occurred on this server */
int64_t triggered_at; /**< Time when the last event was triggered */
#if defined(SS_DEBUG)
skygw_chk_t server_chk_tail;
#endif