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"standby clone": improve error messages related to extension status

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Previously repmgr would emit the "repmgr extension not found on source node"
which depending on context is somewhat misleading, as it may exist
but not be installed, or the user may be attempting to clone from the
wrong database.
This commit is contained in:
Ian Barwick
2019-08-07 16:34:19 +09:00
parent 1d43f1cdb5
commit f1716a67b0
2 changed files with 21 additions and 7 deletions
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1
HISTORY
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@@ -1,5 +1,6 @@
4.4.1 2019-??-??
repmgr: improve data directory check (Ian)
repmgr: improve extension check during "standby clone" (Ian)
4.4 2019-06-27
repmgr: improve "daemon status" output (Ian)

27
repmgr-action-standby.c
View File

@@ -4752,6 +4752,7 @@ check_source_server()
t_node_info upstream_node_record = T_NODE_INFO_INITIALIZER;
RecordStatus record_status = RECORD_NOT_FOUND;
ExtensionStatus extension_status = REPMGR_UNKNOWN;
t_extension_versions extversions = T_EXTENSION_VERSIONS_INITIALIZER;
/* Attempt to connect to the upstream server to verify its configuration */
log_verbose(LOG_DEBUG, "check_source_server()");
@@ -4815,7 +4816,7 @@ check_source_server()
* to be used as a standalone clone tool)
*/
extension_status = get_repmgr_extension_status(primary_conn, NULL);
extension_status = get_repmgr_extension_status(primary_conn, &extversions);
if (extension_status != REPMGR_INSTALLED)
{
@@ -4830,20 +4831,25 @@ check_source_server()
exit(ERR_DB_QUERY);
}
/* schema doesn't exist */
log_error(_("repmgr extension not found on source node"));
if (extension_status == REPMGR_AVAILABLE)
{
log_detail(_("repmgr extension is available but not installed in database \"%s\""),
log_error(_("repmgr extension is available but not installed in database \"%s\""),
param_get(&source_conninfo, "dbname"));
log_hint(_("check that you are cloning from the database where \"repmgr\" is installed"));
}
else if (extension_status == REPMGR_UNAVAILABLE)
{
log_detail(_("repmgr extension is not available on the upstream node"));
log_error(_("repmgr extension is not available on the upstream node"));
}
else if (extension_status == REPMGR_OLD_VERSION_INSTALLED)
{
log_error(_("an older version of the extension is installed on the upstream node"));
log_detail(_("version %s is installed but newer version %s is available"),
extversions.installed_version,
extversions.default_version);
log_hint(_("upgrade \"repmgr\" on the source node first"));
}
log_hint(_("check that the upstream node is part of a repmgr cluster"));
PQfinish(source_conn);
exit(ERR_BAD_CONFIG);
}
@@ -4868,6 +4874,13 @@ check_source_server()
* later, as this is a precautionary check and we can retrieve the system
* identifier with a normal connection.
*/
if (runtime_options.dry_run == true)
{
log_info(_("\"repmgr\" extension is installed in database \"%s\""),
param_get(&source_conninfo, "dbname"));
}
if (get_recovery_type(source_conn) == RECTYPE_PRIMARY && PQserverVersion(source_conn) >= 90600)
{
uint64 source_system_identifier = system_identifier(source_conn);