gboolean cluster_connect_quorum(gboolean(*dispatch) (unsigned long long, gboolean), void (*destroy) (gpointer)) { int rc = -1; int fd = 0; int quorate = 0; uint32_t quorum_type = 0; struct mainloop_fd_callbacks quorum_fd_callbacks; quorum_fd_callbacks.dispatch = pcmk_quorum_dispatch; quorum_fd_callbacks.destroy = destroy; crm_debug("Configuring Pacemaker to obtain quorum from Corosync"); rc = quorum_initialize(&pcmk_quorum_handle, &quorum_callbacks, &quorum_type); if (rc != CS_OK) { crm_err("Could not connect to the Quorum API: %d\n", rc); goto bail; } else if (quorum_type != QUORUM_SET) { crm_err("Corosync quorum is not configured\n"); goto bail; } rc = quorum_getquorate(pcmk_quorum_handle, &quorate); if (rc != CS_OK) { crm_err("Could not obtain the current Quorum API state: %d\n", rc); goto bail; } crm_notice("Quorum %s", quorate ? "acquired" : "lost"); quorum_app_callback = dispatch; crm_have_quorum = quorate; rc = quorum_trackstart(pcmk_quorum_handle, CS_TRACK_CHANGES | CS_TRACK_CURRENT); if (rc != CS_OK) { crm_err("Could not setup Quorum API notifications: %d\n", rc); goto bail; } rc = quorum_fd_get(pcmk_quorum_handle, &fd); if (rc != CS_OK) { crm_err("Could not obtain the Quorum API connection: %d\n", rc); goto bail; } mainloop_add_fd("quorum", G_PRIORITY_HIGH, fd, dispatch, &quorum_fd_callbacks); corosync_initialize_nodelist(NULL, FALSE, NULL); bail: if (rc != CS_OK) { quorum_finalize(pcmk_quorum_handle); return FALSE; } return TRUE; }
/* * return 1 if quorate * 0 if not quorate * -1 on error */ static int show_status(nodeid_format_t nodeid_format, name_format_t name_format, sorttype_t sort_type) { int is_quorate; int err; err=quorum_getquorate(q_handle, &is_quorate); if (err != CS_OK) { fprintf(stderr, "Unable to get cluster quorate status: %s\n", cs_strerror(err)); goto quorum_err; } err=quorum_trackstart(q_handle, CS_TRACK_CURRENT); if (err != CS_OK) { fprintf(stderr, "Unable to start quorum status tracking: %s\n", cs_strerror(err)); goto quorum_err; } g_called = 0; while (g_called == 0 && err == CS_OK) { err = quorum_dispatch(q_handle, CS_DISPATCH_ONE); if (err != CS_OK) { fprintf(stderr, "Unable to dispatch quorum status: %s\n", cs_strerror(err)); } } if (quorum_trackstop(q_handle) != CS_OK) { fprintf(stderr, "Unable to stop quorum status tracking: %s\n", cs_strerror(err)); } if (using_votequorum()) { if ( (err=votequorum_trackstart(v_handle, 0LL, CS_TRACK_CURRENT)) != CS_OK) { fprintf(stderr, "Unable to start votequorum status tracking: %s\n", cs_strerror(err)); goto quorum_err; } g_vq_called = 0; while (g_vq_called == 0 && err == CS_OK) { err = votequorum_dispatch(v_handle, CS_DISPATCH_ONE); if (err != CS_OK) { fprintf(stderr, "Unable to dispatch votequorum status: %s\n", cs_strerror(err)); } } } quorum_err: if (err != CS_OK) { return -1; } err = display_quorum_data(is_quorate, nodeid_format, name_format, sort_type, 0); if (err != CS_OK) { return -1; } return is_quorate; }
static void getquorate (int sock) { int ret; int quorate; char response[100]; q_lib_init (); ret = quorum_getquorate (q_handle, &quorate); if (ret != CS_OK) { snprintf (response, 100, "%s", FAIL_STR); qb_log (LOG_ERR, "getquorate FAILED: %d", ret); goto send_response; } snprintf (response, 100, "%d", quorate); send_response: send (sock, response, strlen (response), 0); }
static void show_status(void) { quorum_handle_t q_handle; votequorum_handle_t v_handle; votequorum_callbacks_t v_callbacks; quorum_callbacks_t callbacks; struct votequorum_info info; int is_quorate; int err; callbacks.quorum_notify_fn = quorum_notification_fn; err=quorum_initialize(&q_handle, &callbacks); if (err != CS_OK) { fprintf(stderr, "Cannot connect to quorum service, is it loaded?\n"); return; } err=quorum_getquorate(q_handle, &is_quorate); if (err != CS_OK) { fprintf(stderr, "quorum_getquorate FAILED: %d\n", err); return; } err=quorum_trackstart(q_handle, CS_TRACK_CURRENT); if (err != CS_OK) { fprintf(stderr, "quorum_trackstart FAILED: %d\n", err); return; } g_called = 0; while (g_called == 0) quorum_dispatch(q_handle, CS_DISPATCH_ONE); quorum_finalize(q_handle); printf("Version: %s\n", VERSION); printf("Nodes: %d\n", g_view_list_entries); printf("Ring ID: %" PRIu64 "\n", g_ring_id); printf("Quorum type: %s\n", get_quorum_type()); printf("Quorate: %s\n", is_quorate?"Yes":"No"); if (using_votequorum()) { v_callbacks.votequorum_notify_fn = NULL; v_callbacks.votequorum_expectedvotes_notify_fn = NULL; if ( (err=votequorum_initialize(&v_handle, &v_callbacks)) != CS_OK) { fprintf(stderr, "votequorum_initialize FAILED: %d, this is probably a configuration error\n", err); goto err_exit; } if ( (err=votequorum_getinfo(v_handle, 0, &info)) != CS_OK) fprintf(stderr, "votequorum_getinfo FAILED: %d\n", err); else { printf("Node votes: %d\n", info.node_votes); printf("Expected votes: %d\n", info.node_expected_votes); printf("Highest expected: %d\n", info.highest_expected); printf("Total votes: %d\n", info.total_votes); printf("Quorum: %d %s\n", info.quorum, info.flags & VOTEQUORUM_INFO_FLAG_QUORATE?" ":"Activity blocked"); printf("Flags: "); if (info.flags & VOTEQUORUM_INFO_FLAG_HASSTATE) printf("HasState "); if (info.flags & VOTEQUORUM_INFO_FLAG_DISALLOWED) printf("DisallowedNodes "); if (info.flags & VOTEQUORUM_INFO_FLAG_TWONODE) printf("2Node "); if (info.flags & VOTEQUORUM_INFO_FLAG_QUORATE) printf("Quorate "); printf("\n"); } } err_exit: return; }
gboolean cluster_connect_quorum(gboolean(*dispatch) (unsigned long long, gboolean), void (*destroy) (gpointer)) { cs_error_t rc; int fd = 0; int quorate = 0; uint32_t quorum_type = 0; struct mainloop_fd_callbacks quorum_fd_callbacks; uid_t found_uid = 0; gid_t found_gid = 0; pid_t found_pid = 0; int rv; quorum_fd_callbacks.dispatch = pcmk_quorum_dispatch; quorum_fd_callbacks.destroy = destroy; crm_debug("Configuring Pacemaker to obtain quorum from Corosync"); rc = quorum_initialize(&pcmk_quorum_handle, &quorum_callbacks, &quorum_type); if (rc != CS_OK) { crm_err("Could not connect to the Quorum API: %s (%d)", cs_strerror(rc), rc); goto bail; } else if (quorum_type != QUORUM_SET) { crm_err("Corosync quorum is not configured"); goto bail; } rc = quorum_fd_get(pcmk_quorum_handle, &fd); if (rc != CS_OK) { crm_err("Could not obtain the Quorum API connection: %s (%d)", strerror(rc), rc); goto bail; } /* Quorum provider run as root (in given user namespace, anyway)? */ if (!(rv = crm_ipc_is_authentic_process(fd, (uid_t) 0,(gid_t) 0, &found_pid, &found_uid, &found_gid))) { crm_err("Quorum provider is not authentic:" " process %lld (uid: %lld, gid: %lld)", (long long) PCMK__SPECIAL_PID_AS_0(found_pid), (long long) found_uid, (long long) found_gid); rc = CS_ERR_ACCESS; goto bail; } else if (rv < 0) { crm_err("Could not verify authenticity of Quorum provider: %s (%d)", strerror(-rv), -rv); rc = CS_ERR_ACCESS; goto bail; } rc = quorum_getquorate(pcmk_quorum_handle, &quorate); if (rc != CS_OK) { crm_err("Could not obtain the current Quorum API state: %d", rc); goto bail; } if (quorate) { crm_notice("Quorum acquired"); } else { crm_warn("Quorum lost"); } quorum_app_callback = dispatch; crm_have_quorum = quorate; rc = quorum_trackstart(pcmk_quorum_handle, CS_TRACK_CHANGES | CS_TRACK_CURRENT); if (rc != CS_OK) { crm_err("Could not setup Quorum API notifications: %d", rc); goto bail; } mainloop_add_fd("quorum", G_PRIORITY_HIGH, fd, dispatch, &quorum_fd_callbacks); corosync_initialize_nodelist(NULL, FALSE, NULL); bail: if (rc != CS_OK) { quorum_finalize(pcmk_quorum_handle); return FALSE; } return TRUE; }