In Eclipse Mosquitto 1.4.14, if a Mosquitto instance is set running with a configuration file, then sending a HUP signal to server triggers the configuration to be reloaded from disk. If there are lots of clients connected so that there are no more file descriptors/sockets available (default limit typically 1024 file descriptors on Linux), then opening the configuration file will fail.
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "0.15-2+deb7u3ubuntu0.1", "binary_name": "libmosquitto0" }, { "binary_version": "0.15-2+deb7u3ubuntu0.1", "binary_name": "libmosquitto0-dev" }, { "binary_version": "0.15-2+deb7u3ubuntu0.1", "binary_name": "libmosquittopp0" }, { "binary_version": "0.15-2+deb7u3ubuntu0.1", "binary_name": "libmosquittopp0-dev" }, { "binary_version": "0.15-2+deb7u3ubuntu0.1", "binary_name": "mosquitto" }, { "binary_version": "0.15-2+deb7u3ubuntu0.1", "binary_name": "mosquitto-clients" }, { "binary_version": "0.15-2+deb7u3ubuntu0.1", "binary_name": "python-mosquitto" } ] }
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{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "1.4.15-1", "binary_name": "libmosquitto-dev" }, { "binary_version": "1.4.15-1", "binary_name": "libmosquitto1" }, { "binary_version": "1.4.15-1", "binary_name": "libmosquitto1-dbg" }, { "binary_version": "1.4.15-1", "binary_name": "libmosquittopp-dev" }, { "binary_version": "1.4.15-1", "binary_name": "libmosquittopp1" }, { "binary_version": "1.4.15-1", "binary_name": "libmosquittopp1-dbg" }, { "binary_version": "1.4.15-1", "binary_name": "mosquitto" }, { "binary_version": "1.4.15-1", "binary_name": "mosquitto-clients" }, { "binary_version": "1.4.15-1", "binary_name": "mosquitto-dbg" }, { "binary_version": "1.4.15-1", "binary_name": "mosquitto-dev" } ] }