If you are full node provider please check your shared-file-size in config.ini file.
If it is not defined, it is 32G by default.
$ du -m ~/fullnode/blockchain/shared_memory.bin
32553 /home/steem/fullnode/blockchain/shared_memory.bin
Depending on the configuration of your node (used plugins, etc) you might be running out of space in this file already and if it fills up, your node would crash.
Please be aware that after increasing its size, you would most probably need to --replay which would take considerable amount of time, especially if this file is not placed on a very fast, low-latency device (SSD or RAM).
In the meantime you could use my node (wss://gtg.steem.house:8090) which is still running v0.16.3, however, please note that due to my support for (hopefully upcoming) HF17 I'm going to upgrade my node to v0.17.x as soon as there would be a high chance for reaching consensus between witnesses / stakeholders / developers, i.e. that would be preferably even before HardFork itself. That is because I would like to minimize time of unavailability of this node and obviously at the time of getting witness_majority_version > 0.16.x all pre-17 nodes would become useless. Please check your scripts for potential compatibility issues.
If you believe I can be of value to steem, please vote for me (gtg) as a witness either on Steemit's Witnesses List or by using your cli_wallet command: vote_for_witness "YOURACCOUNT" "gtg" true true