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fix(ha-bootstrap): pre-load config before election so node enters with correct config_tag

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Rongsong Shen 2026-05-29 13:42:15 +00:00
parent b8e6404fe2
commit ad7ea12563
1 changed files with 15 additions and 0 deletions
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15
src/controller/myapp.c
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@ -75,6 +75,21 @@ int myapp_run(myconf_t* myconf)
iomgr_start(&(c.iomgr)); iomgr_start(&(c.iomgr));
vtaskmgr_start(&(c.vtaskmgr)); vtaskmgr_start(&(c.vtaskmgr));
/* Pre-load config from disk if a local config file exists, so that this
* node's config_tag is known before election. This allows the freshness gate
* in am_i_primary_quorum() (Req 2.4) to work correctly: a node with a valid
* local config will win over nodes that have no config (tag=0).
* If no config file exists yet, config_version_tag stays 0 and the node will
* defer the config fetch to after election via bootstrap_config_if_needed. */
{
int pre_rc = load_primary_config(&c);
if (pre_rc == 0) {
INFO("Pre-election config loaded: tag=%016llx",
(unsigned long long)c.myconf->config_version_tag);
}
/* Ignore errors — node may have no config yet (first boot or standby) */
}
/* Req 3.1–3.4: probe peers for config tags before election so that a node /* Req 3.1–3.4: probe peers for config tags before election so that a node
* joining an existing cluster knows to defer its config fetch to post-election * joining an existing cluster knows to defer its config fetch to post-election
* rather than participating as a first-boot candidate with no config. */ * rather than participating as a first-boot candidate with no config. */