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"repmgr standby clone": add --dry-run option

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This commit is contained in:
Ian Barwick
2017-08-28 15:04:50 +09:00
parent e05bab8284
commit b900f9996f
2 changed files with 39 additions and 3 deletions
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28
README.md
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@@ -256,9 +256,9 @@ Note that if a `conninfo` string is provided, values set in this will override a
provided as individual parameters. For example, with `-d 'host=foo' --host bar`, `foo` provided as individual parameters. For example, with `-d 'host=foo' --host bar`, `foo`
will be chosen over `bar`. will be chosen over `bar`.
Like other PostgreSQL utilities, `repmgr` will default to any values set in environment Like other PostgreSQL utilities based on `libpq`, `repmgr` will default to any values
variables if explicit command line parameters are not provided. See the PostgreSQL set in environment variables if explicit command line parameters are not provided.
documentation for further details: See the PostgreSQL documentation for further details:
https://www.postgresql.org/docs/current/static/libpq-envars.html https://www.postgresql.org/docs/current/static/libpq-envars.html
@@ -542,6 +542,28 @@ then start the server.
* * * * * *
### Verify replication is functioning
Connect to the master server and execute:
repmgr=# SELECT * FROM pg_stat_replication;
-[ RECORD 1 ]----+------------------------------
pid | 7704
usesysid | 16384
usename | repmgr
application_name | node2
client_addr | 192.168.1.2
client_hostname |
client_port | 46196
backend_start | 2016-01-07 17:32:58.322373+09
backend_xmin |
state | streaming
sent_location | 0/3000220
write_location | 0/3000220
flush_location | 0/3000220
replay_location | 0/3000220
sync_priority | 0
sync_state | async
Performing a switchover with repmgr Performing a switchover with repmgr
----------------------------------- -----------------------------------

14
repmgr-action-standby.c
View File

@@ -303,6 +303,19 @@ do_standby_clone(void)
} }
} }
if (runtime_options.dry_run == true)
{
if (mode == pg_basebackup && runtime_options.fast_checkpoint == false)
{
log_info(_("consider using the -c/--fast-checkpoint option"));
}
log_info(_("all pre-requisites for \"standby clone\" are met"));
PQfinish(source_conn);
exit(ERR_BAD_CONFIG);
}
if (mode != barman) if (mode != barman)
{ {
initialise_direct_clone(&node_record); initialise_direct_clone(&node_record);
@@ -4267,6 +4280,7 @@ do_standby_help(void)
" copy configuration files located outside the \n" \ " copy configuration files located outside the \n" \
" data directory to the same path on the standby (default) or to the\n" \ " data directory to the same path on the standby (default) or to the\n" \
" PostgreSQL data directory\n")); " PostgreSQL data directory\n"));
printf(_(" --dry-run perform checks but don't actually clone the standby\n"));
printf(_(" --no-upstream-connection when using Barman, do not connect to upstream node\n")); printf(_(" --no-upstream-connection when using Barman, do not connect to upstream node\n"));
printf(_(" --upstream-conninfo \"primary_conninfo\" value to write in recovery.conf\n" \ printf(_(" --upstream-conninfo \"primary_conninfo\" value to write in recovery.conf\n" \
" when the intended upstream server does not yet exist\n")); " when the intended upstream server does not yet exist\n"));