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Initial code for standby clone

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This commit is contained in:
Ian Barwick
2017-04-27 09:22:09 +09:00
parent bcf55b4f72
commit 99e7bb0ea3
6 changed files with 188 additions and 30 deletions
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75
repmgr-client.c
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@@ -20,20 +20,30 @@
#include "repmgr.h"
#include "repmgr-client.h"
#include "repmgr-client-global.h"
#include "repmgr-action-cluster.h"
#include "repmgr-action-master.h"
#include "repmgr-action-standby.h"
#include "repmgr-action-cluster.h"
/* globally available variables *
* ============================ */
t_runtime_options runtime_options = T_RUNTIME_OPTIONS_INITIALIZER;
t_configuration_options config_file_options = T_CONFIGURATION_OPTIONS_INITIALIZER;
/* conninfo params for the node we're cloning from */
t_conninfo_param_list source_conninfo;
bool config_file_required = true;
bool config_file_required = true;
char pg_bindir[MAXLEN] = "";
char repmgr_slot_name[MAXLEN] = "";
char *repmgr_slot_name_ptr = NULL;
char *repmgr_slot_name_ptr = NULL;
/*
* if --node-id/--node-name provided, place that node's record here
* for later use
*/
t_node_info target_node_info = T_NODE_INFO_INITIALIZER;
@@ -115,6 +125,19 @@ main(int argc, char **argv)
/* connection options */
/* ------------------ */
/* -h/--host */
case 'h':
strncpy(runtime_options.host, optarg, MAXLEN);
param_set(&source_conninfo, "host", optarg);
runtime_options.connection_param_provided = true;
runtime_options.host_param_provided = true;
break;
/* -R/--remote_user */
case 'R':
strncpy(runtime_options.remote_user, optarg, MAXLEN);
break;
/* -S/--superuser */
case 'S':
strncpy(runtime_options.superuser, optarg, MAXLEN);
@@ -748,12 +771,6 @@ do_help(void)
static void
do_standby_clone(void)
{
puts("standby clone");
}
@@ -992,3 +1009,41 @@ check_server_version(PGconn *conn, char *server_type, bool exit_on_error, char *
return server_version_num;
}
int
test_ssh_connection(char *host, char *remote_user)
{
char script[MAXLEN];
int r = 1, i;
/* On some OS, true is located in a different place than in Linux
* we have to try them all until all alternatives are gone or we
* found `true' because the target OS may differ from the source
* OS
*/
const char *bin_true_paths[] = {
"/bin/true",
"/usr/bin/true",
NULL
};
for (i = 0; bin_true_paths[i] && r != 0; ++i)
{
if (!remote_user[0])
maxlen_snprintf(script, "ssh -o Batchmode=yes %s %s %s 2>/dev/null",
config_file_options.ssh_options, host, bin_true_paths[i]);
else
maxlen_snprintf(script, "ssh -o Batchmode=yes %s %s -l %s %s 2>/dev/null",
config_file_options.ssh_options, host, remote_user,
bin_true_paths[i]);
log_verbose(LOG_DEBUG, _("test_ssh_connection(): executing %s"), script);
r = system(script);
}
if (r != 0)
log_warning(_("unable to connect to remote host '%s' via SSH"), host);
return r;
}