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Enable use of pg_rewind during switchover operations

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But only if required and --force-rewind required, and pg_rewind
can actually be used.
This commit is contained in:
Ian Barwick
2017-08-09 12:09:37 +09:00
parent 2553839630
commit b1e544f962
6 changed files with 324 additions and 59 deletions
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54
repmgr-client.c
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@@ -30,6 +30,7 @@
* NODE CHECK
*
* For internal use:
* NODE REJOIN
* NODE ARCHIVE-CONFIG
* NODE RESTORE-CONFIG
* NODE SERVICE
@@ -431,6 +432,12 @@ main(int argc, char **argv)
runtime_options.replication_lag = true;
break;
/* "node join" options *
* ------------------- */
case OPT_CONFIG_FILES:
strncpy(runtime_options.config_files, optarg, MAXLEN);
break;
/* "node service" options *
* ---------------------- */
@@ -644,7 +651,7 @@ main(int argc, char **argv)
* { PRIMARY | MASTER } REGISTER |
* STANDBY {REGISTER | UNREGISTER | CLONE [node] | PROMOTE | FOLLOW [node] | SWITCHOVER | REWIND} |
* BDR { REGISTER | UNREGISTER } |
* NODE { STATUS | ARCHIVE-CONFIG | RESTORE-CONFIG | SERVICE } |
* NODE { STATUS | CHECK | REJOIN | ARCHIVE-CONFIG | RESTORE-CONFIG | SERVICE } |
* CLUSTER { CROSSCHECK | MATRIX | SHOW | CLEANUP | EVENT }
*
* [node] is an optional hostname, provided instead of the -h/--host optipn
@@ -718,6 +725,8 @@ main(int argc, char **argv)
action = NODE_CHECK;
else if (strcasecmp(repmgr_action, "STATUS") == 0)
action = NODE_STATUS;
else if (strcasecmp(repmgr_action, "REJOIN") == 0)
action = NODE_REJOIN;
else if (strcasecmp(repmgr_action, "ARCHIVE-CONFIG") == 0)
action = NODE_ARCHIVE_CONFIG;
else if (strcasecmp(repmgr_action, "RESTORE-CONFIG") == 0)
@@ -1046,6 +1055,9 @@ main(int argc, char **argv)
case NODE_CHECK:
do_node_check();
break;
case NODE_REJOIN:
do_node_rejoin();
break;
case NODE_ARCHIVE_CONFIG:
do_node_archive_config();
break;
@@ -1378,9 +1390,10 @@ check_cli_parameters(const int action)
case NODE_STATUS:
break;
default:
item_list_append_format(&cli_warnings,
_("--is-shutdown will be ignored when executing %s"),
action_name(action));
item_list_append_format(
&cli_warnings,
_("--is-shutdown will be ignored when executing %s"),
action_name(action));
}
}
@@ -1391,9 +1404,10 @@ check_cli_parameters(const int action)
case STANDBY_SWITCHOVER:
break;
default:
item_list_append_format(&cli_warnings,
item_list_append_format(
&cli_warnings,
_("--always-promote will be ignored when executing %s"),
action_name(action));
action_name(action));
}
}
@@ -1404,9 +1418,25 @@ check_cli_parameters(const int action)
case STANDBY_SWITCHOVER:
break;
default:
item_list_append_format(&cli_warnings,
item_list_append_format(
&cli_warnings,
_("--force-rewind will be ignored when executing %s"),
action_name(action));
action_name(action));
}
}
if (runtime_options.config_files[0] != '\0')
{
switch (action)
{
case NODE_REJOIN:
break;
default:
item_list_append_format(
&cli_warnings,
_("--config-files will be ignored when executing %s"),
action_name(action));
}
}
@@ -1426,8 +1456,9 @@ check_cli_parameters(const int action)
if (used_options > 1)
{
/* TODO: list which options were used */
item_list_append(&cli_errors,
"only one of --csv, --nagios and --optformat can be used");
item_list_append(
&cli_errors,
"only one of --csv, --nagios and --optformat can be used");
}
}
}
@@ -1463,6 +1494,8 @@ action_name(const int action)
return "NODE STATUS";
case NODE_CHECK:
return "NODE CHECK";
case NODE_REJOIN:
return "NODE REJOIN";
case NODE_ARCHIVE_CONFIG:
return "NODE ARCHIVE-CONFIG";
case NODE_RESTORE_CONFIG:
@@ -2849,6 +2882,7 @@ get_server_action(t_server_action action, char *script, char *data_dir)
return;
}
bool
data_dir_required_for_action(t_server_action action)
{