* Foundation. See file COPYING.
*/
+#include <boost/tokenizer.hpp>
+
#include "messages/MMgrBeacon.h"
#include "messages/MMgrMap.h"
#include "messages/MMgrDigest.h"
-#include "PGMap.h"
-#include "PGMonitor.h"
+#include "PGStatService.h"
#include "include/stringify.h"
#include "mgr/MgrContext.h"
+#include "mgr/mgr_commands.h"
#include "OSDMonitor.h"
#include "MgrMonitor.h"
+#define MGR_METADATA_PREFIX "mgr_metadata"
+
#define dout_subsys ceph_subsys_mon
#undef dout_prefix
#define dout_prefix _prefix(_dout, mon, map)
<< ").mgr e" << mgrmap.get_epoch() << " ";
}
+// Prefix for mon store of active mgr's command descriptions
+const static std::string command_descs_prefix = "mgr_command_descs";
+
+
void MgrMonitor::create_initial()
{
+ boost::tokenizer<> tok(g_conf->mgr_initial_modules);
+ for (auto& m : tok) {
+ pending_map.modules.insert(m);
+ }
+ pending_command_descs = mgr_commands;
+ dout(10) << __func__ << " initial modules " << pending_map.modules
+ << ", " << pending_command_descs.size() << " commands"
+ << dendl;
}
void MgrMonitor::update_from_paxos(bool *need_bootstrap)
int err = get_version(version, bl);
assert(err == 0);
+ bool old_available = map.get_available();
+ uint64_t old_gid = map.get_active_gid();
+
bufferlist::iterator p = bl.begin();
map.decode(p);
dout(4) << "active server: " << map.active_addr
<< "(" << map.active_gid << ")" << dendl;
+ ever_had_active_mgr = get_value("ever_had_active_mgr");
+
+ load_health();
+
if (map.available) {
first_seen_inactive = utime_t();
} else {
}
check_subs();
+
+ if (version == 1
+ || (map.get_available()
+ && (!old_available || old_gid != map.get_active_gid()))) {
+ dout(4) << "mkfs or daemon transitioned to available, loading commands"
+ << dendl;
+ bufferlist loaded_commands;
+ int r = mon->store->get(command_descs_prefix, "", loaded_commands);
+ if (r < 0) {
+ derr << "Failed to load mgr commands: " << cpp_strerror(r) << dendl;
+ } else {
+ auto p = loaded_commands.begin();
+ ::decode(command_descs, p);
+ }
+ }
}
// feed our pet MgrClient
pending_map.epoch++;
}
+health_status_t MgrMonitor::should_warn_about_mgr_down()
+{
+ utime_t now = ceph_clock_now();
+ // we warn if
+ // - we've ever had an active mgr, or
+ // - we have osds AND we've exceeded the grace period
+ // which means a new mon cluster and be HEALTH_OK indefinitely as long as
+ // no OSDs are ever created.
+ if (ever_had_active_mgr ||
+ (mon->osdmon()->osdmap.get_num_osds() > 0 &&
+ now > mon->monmap->created + g_conf->mon_mgr_mkfs_grace)) {
+ health_status_t level = HEALTH_WARN;
+ if (first_seen_inactive != utime_t() &&
+ now - first_seen_inactive > g_conf->mon_mgr_inactive_grace) {
+ level = HEALTH_ERR;
+ }
+ return level;
+ }
+ return HEALTH_OK;
+}
+
void MgrMonitor::encode_pending(MonitorDBStore::TransactionRef t)
{
dout(10) << __func__ << " " << pending_map << dendl;
pending_map.encode(bl, mon->get_quorum_con_features());
put_version(t, pending_map.epoch, bl);
put_last_committed(t, pending_map.epoch);
+
+ for (auto& p : pending_metadata) {
+ dout(10) << __func__ << " set metadata for " << p.first << dendl;
+ t->put(MGR_METADATA_PREFIX, p.first, p.second);
+ }
+ for (auto& name : pending_metadata_rm) {
+ dout(10) << __func__ << " rm metadata for " << name << dendl;
+ t->erase(MGR_METADATA_PREFIX, name);
+ }
+ pending_metadata.clear();
+ pending_metadata_rm.clear();
+
+ health_check_map_t next;
+ if (pending_map.active_gid == 0) {
+ auto level = should_warn_about_mgr_down();
+ if (level != HEALTH_OK) {
+ next.add("MGR_DOWN", level, "no active mgr");
+ } else {
+ dout(10) << __func__ << " no health warning (never active and new cluster)"
+ << dendl;
+ }
+ } else {
+ put_value(t, "ever_had_active_mgr", 1);
+ }
+ encode_health(next, t);
+
+ if (pending_command_descs.size()) {
+ dout(4) << __func__ << " encoding " << pending_command_descs.size()
+ << " command_descs" << dendl;
+ for (auto& p : pending_command_descs) {
+ p.set_flag(MonCommand::FLAG_MGR);
+ }
+ bufferlist bl;
+ ::encode(pending_command_descs, bl);
+ t->put(command_descs_prefix, "", bl);
+ pending_command_descs.clear();
+ }
}
bool MgrMonitor::check_caps(MonOpRequestRef op, const uuid_d& fsid)
&& m->get_gid() != pending_map.active_gid)
{
dout(4) << "Active daemon restart (mgr." << m->get_name() << ")" << dendl;
+ mon->clog->info() << "Active manager daemon " << m->get_name()
+ << " restarted";
drop_active();
}
const StandbyInfo &s = i.second;
if (s.name == m->get_name() && s.gid != m->get_gid()) {
dout(4) << "Standby daemon restart (mgr." << m->get_name() << ")" << dendl;
+ mon->clog->debug() << "Standby manager daemon " << m->get_name()
+ << " restarted";
drop_standby(i.first);
break;
}
}
- last_beacon[m->get_gid()] = ceph_clock_now();
+ last_beacon[m->get_gid()] = ceph::coarse_mono_clock::now();
// Track whether we modified pending_map
bool updated = false;
if (pending_map.get_available() != m->get_available()) {
dout(4) << "available " << m->get_gid() << dendl;
+ mon->clog->info() << "Manager daemon " << pending_map.active_name
+ << " is now available";
+
+ // This beacon should include command descriptions
+ pending_command_descs = m->get_command_descs();
+ if (pending_command_descs.empty()) {
+ // This should not happen, but it also isn't fatal: we just
+ // won't successfully update our list of commands.
+ dout(4) << "First available beacon from " << pending_map.active_name
+ << "(" << m->get_gid() << ") does not include command descs"
+ << dendl;
+ } else {
+ dout(4) << "First available beacon from " << pending_map.active_name
+ << "(" << m->get_gid() << ") includes "
+ << pending_command_descs.size() << " command descs" << dendl;
+ }
+
pending_map.available = m->get_available();
updated = true;
}
+ if (pending_map.available_modules != m->get_available_modules()) {
+ dout(4) << "available_modules " << m->get_available_modules()
+ << " (was " << pending_map.available_modules << ")" << dendl;
+ pending_map.available_modules = m->get_available_modules();
+ updated = true;
+ }
} else if (pending_map.active_gid == 0) {
// There is no currently active daemon, select this one.
if (pending_map.standbys.count(m->get_gid())) {
<< pending_map.active_name << ")" << dendl;
pending_map.active_gid = m->get_gid();
pending_map.active_name = m->get_name();
+ pending_map.available_modules = m->get_available_modules();
+ ::encode(m->get_metadata(), pending_metadata[m->get_name()]);
+ pending_metadata_rm.erase(m->get_name());
+
+ mon->clog->info() << "Activating manager daemon "
+ << pending_map.active_name;
updated = true;
} else {
if (pending_map.standbys.count(m->get_gid()) > 0) {
dout(10) << "from existing standby " << m->get_gid() << dendl;
+ if (pending_map.standbys[m->get_gid()].available_modules !=
+ m->get_available_modules()) {
+ dout(10) << "existing standby " << m->get_gid() << " available_modules "
+ << m->get_available_modules() << " (was "
+ << pending_map.standbys[m->get_gid()].available_modules << ")"
+ << dendl;
+ pending_map.standbys[m->get_gid()].available_modules =
+ m->get_available_modules();
+ updated = true;
+ }
} else {
dout(10) << "new standby " << m->get_gid() << dendl;
- pending_map.standbys[m->get_gid()] = {m->get_gid(), m->get_name()};
+ mon->clog->debug() << "Standby manager daemon " << m->get_name()
+ << " started";
+ pending_map.standbys[m->get_gid()] = {m->get_gid(), m->get_name(),
+ m->get_available_modules()};
+ ::encode(m->get_metadata(), pending_metadata[m->get_name()]);
+ pending_metadata_rm.erase(m->get_name());
updated = true;
}
}
{
if (sub->type == "mgrmap") {
if (sub->next <= map.get_epoch()) {
- dout(20) << "Sending map to subscriber " << sub->session->con << dendl;
+ dout(20) << "Sending map to subscriber " << sub->session->con
+ << " " << sub->session->con->get_peer_addr() << dendl;
sub->session->con->send_message(new MMgrMap(map));
if (sub->onetime) {
mon->session_map.remove_sub(sub);
}
} else {
assert(sub->type == "mgrdigest");
- if (digest_callback == nullptr) {
+ if (sub->next == 0) {
+ // new registration; cancel previous timer
+ cancel_timer();
+ }
+ if (digest_event == nullptr) {
send_digests();
}
}
*/
void MgrMonitor::send_digests()
{
- digest_callback = nullptr;
+ cancel_timer();
+
+ if (!is_active()) {
+ return;
+ }
+ dout(10) << __func__ << dendl;
const std::string type = "mgrdigest";
if (mon->session_map.subs.count(type) == 0)
return;
for (auto sub : *(mon->session_map.subs[type])) {
+ dout(10) << __func__ << " sending digest to subscriber " << sub->session->con
+ << " " << sub->session->con->get_peer_addr() << dendl;
MMgrDigest *mdigest = new MMgrDigest;
JSONFormatter f;
- std::list<std::string> health_strs;
- mon->get_health(health_strs, nullptr, &f);
+ mon->get_health_status(true, &f, nullptr, nullptr, nullptr);
f.flush(mdigest->health_json);
f.reset();
sub->session->con->send_message(mdigest);
}
- digest_callback = new C_MonContext(mon, [this](int){
+ digest_event = new C_MonContext(mon, [this](int){
send_digests();
});
- mon->timer.add_event_after(g_conf->mon_mgr_digest_period, digest_callback);
+ mon->timer.add_event_after(g_conf->mon_mgr_digest_period, digest_event);
+}
+
+void MgrMonitor::cancel_timer()
+{
+ if (digest_event) {
+ mon->timer.cancel_event(digest_event);
+ digest_event = nullptr;
+ }
}
void MgrMonitor::on_active()
{
- if (mon->is_leader())
- mon->clog->info() << "mgrmap e" << map.epoch << ": " << map;
+ if (mon->is_leader()) {
+ mon->clog->debug() << "mgrmap e" << map.epoch << ": " << map;
+ }
}
void MgrMonitor::get_health(
return;
}
- if (!map.available) {
+ if (map.active_gid == 0) {
auto level = HEALTH_WARN;
// do not escalate to ERR if they are still upgrading to jewel.
- if (mon->osdmon()->osdmap.test_flag(CEPH_OSDMAP_REQUIRE_LUMINOUS)) {
+ if (mon->osdmon()->osdmap.require_osd_release >= CEPH_RELEASE_LUMINOUS) {
utime_t now = ceph_clock_now();
if (first_seen_inactive != utime_t() &&
now - first_seen_inactive > g_conf->mon_mgr_inactive_grace) {
if (!is_active() || !mon->is_leader())
return;
- const utime_t now = ceph_clock_now();
- utime_t cutoff = now;
- cutoff -= g_conf->mon_mgr_beacon_grace;
+ const auto now = ceph::coarse_mono_clock::now();
+ const auto cutoff = now - std::chrono::seconds(g_conf->mon_mgr_beacon_grace);
// Populate any missing beacons (i.e. no beacon since MgrMonitor
// instantiation) with the current time, so that they will
if (pending_map.active_gid != 0
&& last_beacon.at(pending_map.active_gid) < cutoff) {
-
+ const std::string old_active_name = pending_map.active_name;
drop_active();
propose = true;
dout(4) << "Dropping active" << pending_map.active_gid << dendl;
if (promote_standby()) {
dout(4) << "Promoted standby " << pending_map.active_gid << dendl;
+ mon->clog->info() << "Manager daemon " << old_active_name
+ << " is unresponsive, replacing it with standby"
+ << " daemon " << pending_map.active_name;
} else {
dout(4) << "Active is laggy but have no standbys to replace it" << dendl;
+ mon->clog->warn() << "Manager daemon " << old_active_name
+ << " is unresponsive. No standby daemons available.";
}
} else if (pending_map.active_gid == 0) {
if (promote_standby()) {
dout(4) << "Promoted standby " << pending_map.active_gid << dendl;
+ mon->clog->info() << "Activating manager daemon "
+ << pending_map.active_name;
propose = true;
}
}
+ if (!pending_map.available &&
+ !ever_had_active_mgr &&
+ should_warn_about_mgr_down() != HEALTH_OK) {
+ dout(10) << " exceeded mon_mgr_mkfs_grace " << g_conf->mon_mgr_mkfs_grace
+ << " seconds" << dendl;
+ propose = true;
+ }
+
if (propose) {
propose_pending();
}
}
+void MgrMonitor::on_restart()
+{
+ // Clear out the leader-specific state.
+ last_beacon.clear();
+}
+
+
bool MgrMonitor::promote_standby()
{
assert(pending_map.active_gid == 0);
last_beacon.erase(pending_map.active_gid);
}
+ pending_metadata_rm.insert(pending_map.active_name);
+ pending_metadata.erase(pending_map.active_name);
pending_map.active_name = "";
pending_map.active_gid = 0;
pending_map.available = false;
pending_map.active_addr = entity_addr_t();
+
+ // So that when new active mgr subscribes to mgrdigest, it will
+ // get an immediate response instead of waiting for next timer
+ cancel_timer();
}
void MgrMonitor::drop_standby(uint64_t gid)
{
+ pending_metadata_rm.insert(pending_map.standbys[gid].name);
+ pending_metadata.erase(pending_map.standbys[gid].name);
pending_map.standbys.erase(gid);
if (last_beacon.count(gid) > 0) {
last_beacon.erase(gid);
}
-
}
bool MgrMonitor::preprocess_command(MonOpRequestRef op)
{
- return false;
+ MMonCommand *m = static_cast<MMonCommand*>(op->get_req());
+ std::stringstream ss;
+ bufferlist rdata;
+
+ std::map<std::string, cmd_vartype> cmdmap;
+ if (!cmdmap_from_json(m->cmd, &cmdmap, ss)) {
+ string rs = ss.str();
+ mon->reply_command(op, -EINVAL, rs, rdata, get_last_committed());
+ return true;
+ }
+ MonSession *session = m->get_session();
+ if (!session) {
+ mon->reply_command(op, -EACCES, "access denied", rdata,
+ get_last_committed());
+ return true;
+ }
+
+ string format;
+ cmd_getval(g_ceph_context, cmdmap, "format", format, string("json-pretty"));
+ boost::scoped_ptr<Formatter> f(Formatter::create(format));
+
+ string prefix;
+ cmd_getval(g_ceph_context, cmdmap, "prefix", prefix);
+ int r = 0;
+
+ if (prefix == "mgr dump") {
+ int64_t epoch = 0;
+ cmd_getval(g_ceph_context, cmdmap, "epoch", epoch, (int64_t)map.get_epoch());
+ if (epoch == (int64_t)map.get_epoch()) {
+ f->dump_object("mgrmap", map);
+ } else {
+ bufferlist bl;
+ int err = get_version(epoch, bl);
+ if (err == -ENOENT) {
+ r = -ENOENT;
+ ss << "there is no map for epoch " << epoch;
+ goto reply;
+ }
+ MgrMap m;
+ auto p = bl.begin();
+ m.decode(p);
+ f->dump_object("mgrmap", m);
+ }
+ f->flush(rdata);
+ } else if (prefix == "mgr module ls") {
+ f->open_array_section("modules");
+ for (auto& p : map.modules) {
+ f->dump_string("module", p);
+ }
+ f->close_section();
+ f->flush(rdata);
+ } else if (prefix == "mgr metadata") {
+ string name;
+ cmd_getval(g_ceph_context, cmdmap, "id", name);
+ if (name.size() > 0 && !map.have_name(name)) {
+ ss << "mgr." << name << " does not exist";
+ r = -ENOENT;
+ goto reply;
+ }
+ string format;
+ cmd_getval(g_ceph_context, cmdmap, "format", format);
+ boost::scoped_ptr<Formatter> f(Formatter::create(format, "json-pretty", "json-pretty"));
+ if (name.size()) {
+ f->open_object_section("mgr_metadata");
+ f->dump_string("id", name);
+ r = dump_metadata(name, f.get(), &ss);
+ if (r < 0)
+ goto reply;
+ f->close_section();
+ } else {
+ r = 0;
+ f->open_array_section("mgr_metadata");
+ for (auto& i : map.get_all_names()) {
+ f->open_object_section("mgr");
+ f->dump_string("id", i);
+ r = dump_metadata(i, f.get(), NULL);
+ if (r == -EINVAL || r == -ENOENT) {
+ // Drop error, continue to get other daemons' metadata
+ dout(4) << "No metadata for mgr." << i << dendl;
+ r = 0;
+ } else if (r < 0) {
+ // Unexpected error
+ goto reply;
+ }
+ f->close_section();
+ }
+ f->close_section();
+ }
+ f->flush(rdata);
+ } else if (prefix == "mgr versions") {
+ if (!f)
+ f.reset(Formatter::create("json-pretty"));
+ count_metadata("ceph_version", f.get());
+ f->flush(rdata);
+ r = 0;
+ } else if (prefix == "mgr count-metadata") {
+ if (!f)
+ f.reset(Formatter::create("json-pretty"));
+ string field;
+ cmd_getval(g_ceph_context, cmdmap, "property", field);
+ count_metadata(field, f.get());
+ f->flush(rdata);
+ r = 0;
+ } else {
+ return false;
+ }
+
+reply:
+ string rs;
+ getline(ss, rs);
+ mon->reply_command(op, r, rs, rdata, get_last_committed());
+ return true;
}
bool MgrMonitor::prepare_command(MonOpRequestRef op)
return true;
}
+ string format;
+ cmd_getval(g_ceph_context, cmdmap, "format", format, string("plain"));
+ boost::scoped_ptr<Formatter> f(Formatter::create(format));
+
string prefix;
cmd_getval(g_ceph_context, cmdmap, "prefix", prefix);
if (changed && pending_map.active_gid == 0) {
promote_standby();
}
+ } else if (prefix == "mgr module enable") {
+ string module;
+ cmd_getval(g_ceph_context, cmdmap, "module", module);
+ if (module.empty()) {
+ r = -EINVAL;
+ goto out;
+ }
+ string force;
+ cmd_getval(g_ceph_context, cmdmap, "force", force);
+ if (!pending_map.all_support_module(module) &&
+ force != "--force") {
+ ss << "all mgr daemons do not support module '" << module << "', pass "
+ << "--force to force enablement";
+ r = -ENOENT;
+ goto out;
+ }
+ pending_map.modules.insert(module);
+ } else if (prefix == "mgr module disable") {
+ string module;
+ cmd_getval(g_ceph_context, cmdmap, "module", module);
+ if (module.empty()) {
+ r = -EINVAL;
+ goto out;
+ }
+ pending_map.modules.erase(module);
} else {
+ ss << "Command '" << prefix << "' not implemented!";
r = -ENOSYS;
}
+out:
dout(4) << __func__ << " done, r=" << r << dendl;
/* Compose response */
string rs;
void MgrMonitor::init()
{
- if (digest_callback == nullptr) {
+ if (digest_event == nullptr) {
send_digests(); // To get it to schedule its own event
}
}
void MgrMonitor::on_shutdown()
{
- if (digest_callback) {
- mon->timer.cancel_event(digest_callback);
+ cancel_timer();
+}
+
+int MgrMonitor::load_metadata(const string& name, std::map<string, string>& m,
+ ostream *err)
+{
+ bufferlist bl;
+ int r = mon->store->get(MGR_METADATA_PREFIX, name, bl);
+ if (r < 0)
+ return r;
+ try {
+ bufferlist::iterator p = bl.begin();
+ ::decode(m, p);
+ }
+ catch (buffer::error& e) {
+ if (err)
+ *err << "mgr." << name << " metadata is corrupt";
+ return -EIO;
+ }
+ return 0;
+}
+
+void MgrMonitor::count_metadata(const string& field, std::map<string,int> *out)
+{
+ std::set<string> ls = map.get_all_names();
+ for (auto& name : ls) {
+ std::map<string,string> meta;
+ load_metadata(name, meta, nullptr);
+ auto p = meta.find(field);
+ if (p == meta.end()) {
+ (*out)["unknown"]++;
+ } else {
+ (*out)[p->second]++;
+ }
+ }
+}
+
+void MgrMonitor::count_metadata(const string& field, Formatter *f)
+{
+ std::map<string,int> by_val;
+ count_metadata(field, &by_val);
+ f->open_object_section(field.c_str());
+ for (auto& p : by_val) {
+ f->dump_int(p.first.c_str(), p.second);
+ }
+ f->close_section();
+}
+
+int MgrMonitor::dump_metadata(const string& name, Formatter *f, ostream *err)
+{
+ std::map<string,string> m;
+ if (int r = load_metadata(name, m, err))
+ return r;
+ for (auto& p : m) {
+ f->dump_string(p.first.c_str(), p.second);
}
+ return 0;
}
projects / ceph.git / blobdiff