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ruanhaishen
redis
Commits
b37b2b5c
Commit
b37b2b5c
authored
Mar 21, 2015
by
antirez
Browse files
Cluster: TAKEOVER option for manual failover.
parent
c43c9703
Changes
1
Hide whitespace changes
Inline
Side-by-side
src/cluster.c
View file @
b37b2b5c
...
...
@@ -4174,18 +4174,22 @@ void clusterCommand(redisClient *c) {
}
else
if
(
!
strcasecmp
(
c
->
argv
[
1
]
->
ptr
,
"failover"
)
&&
(
c
->
argc
==
2
||
c
->
argc
==
3
))
{
/* CLUSTER FAILOVER [FORCE] */
int
force
=
0
;
/* CLUSTER FAILOVER [FORCE
|TAKEOVER
] */
int
force
=
0
,
takeover
=
0
;
if
(
c
->
argc
==
3
)
{
if
(
!
strcasecmp
(
c
->
argv
[
2
]
->
ptr
,
"force"
))
{
force
=
1
;
}
else
if
(
!
strcasecmp
(
c
->
argv
[
2
]
->
ptr
,
"takeover"
))
{
takeover
=
1
;
force
=
1
;
/* Takeover also implies force. */
}
else
{
addReply
(
c
,
shared
.
syntaxerr
);
return
;
}
}
/* Check preconditions. */
if
(
nodeIsMaster
(
myself
))
{
addReplyError
(
c
,
"You should send CLUSTER FAILOVER to a slave"
);
return
;
...
...
@@ -4203,15 +4207,24 @@ void clusterCommand(redisClient *c) {
resetManualFailover
();
server
.
cluster
->
mf_end
=
mstime
()
+
REDIS_CLUSTER_MF_TIMEOUT
;
/* If this is a forced failover, we don't need to talk with our master
* to agree about the offset. We just failover taking over it without
* coordination. */
if
(
force
)
{
if
(
takeover
)
{
/* A takeover does not perform any initial check. It just
* generates a new configuration epoch for this node without
* consensus, claims the master's slots, and broadcast the new
* configuration. */
redisLog
(
REDIS_WARNING
,
"Taking over the master (user request)."
);
clusterBumpConfigEpochWithoutConsensus
();
clusterFailoverReplaceYourMaster
();
}
else
if
(
force
)
{
/* If this is a forced failover, we don't need to talk with our
* master to agree about the offset. We just failover taking over
* it without coordination. */
redisLog
(
REDIS_WARNING
,
"Forced failover user request accepted."
);
server
.
cluster
->
mf_can_start
=
1
;
}
else
{
redisLog
(
REDIS_WARNING
,
"Manual failover user request accepted."
);
clusterSendMFStart
(
myself
->
slaveof
);
}
redisLog
(
REDIS_WARNING
,
"Manual failover user request accepted."
);
addReply
(
c
,
shared
.
ok
);
}
else
if
(
!
strcasecmp
(
c
->
argv
[
1
]
->
ptr
,
"set-config-epoch"
)
&&
c
->
argc
==
3
)
{
...
...
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