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"standby switchover": sanity-check remote "repmgr" binary before proceeding

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This commit is contained in:
Ian Barwick
2017-08-31 11:00:14 +09:00
parent 8e35a415a9
commit ae634100a3
1 changed files with 40 additions and 4 deletions
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44
repmgr-action-standby.c
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@@ -292,8 +292,11 @@ do_standby_clone(void)
exit(ERR_BAD_CONFIG);
}
/* Write the replication user from the node's upstream record */
param_set(&recovery_conninfo, "user", upstream_repluser);
if (upstream_repluser[0] != '\0')
{
/* Write the replication user from the node's upstream record */
param_set(&recovery_conninfo, "user", upstream_repluser);
}
}
else
{
@@ -1788,7 +1791,7 @@ do_standby_switchover(void)
PQExpBufferData node_rejoin_options;
int r, i;
bool command_success = false;
bool shutdown_success = false;
XLogRecPtr remote_last_checkpoint_lsn = InvalidXLogRecPtr;
ReplInfo replication_info = T_REPLINFO_INTIALIZER;
@@ -1979,6 +1982,40 @@ do_standby_switchover(void)
termPQExpBuffer(&msg);
}
/* check remote repmgr binary can be found */
initPQExpBuffer(&remote_command_str);
make_remote_repmgr_path(&remote_command_str, &remote_node_record);
appendPQExpBuffer(&remote_command_str, "--version");
initPQExpBuffer(&command_output);
command_success = remote_command(
remote_host,
runtime_options.remote_user,
remote_command_str.data,
&command_output);
termPQExpBuffer(&remote_command_str);
if (command_success == false)
{
log_error(_("unable to execute \"%s\" on \"%s\""),
progname(), remote_host);
if (strlen(command_output.data))
log_detail("%s", command_output.data);
termPQExpBuffer(&command_output);
PQfinish(remote_conn);
PQfinish(local_conn);
exit(ERR_BAD_CONFIG);
}
if (runtime_options.dry_run == true)
{
log_info(_("able to execute \"%s\" on remote host \"localhost\""), progname());
}
termPQExpBuffer(&command_output);
/* check archive/replication status */
{
@@ -1991,7 +2028,6 @@ do_standby_switchover(void)
{
int files = 0;
int threshold = 0;
bool command_success = false;
initPQExpBuffer(&remote_command_str);
make_remote_repmgr_path(&remote_command_str, &remote_node_record);