Using Droplet 512MB MySQL is Crashing very often

[elpapoelg]

You need to review the logs to find out exactly why MySQL is shutting down.
(/var/logs/, /var/sentora/logs/)
You may also want to look into upgrading to at least 1gb ram also.

Thanks your help

that was what I find in var/log/mysql/error.log

170502  7:38:13 [Warning] Using unique option prefix myisam-recover instead of myisam-recover-options is deprecated and will be removed in a future release. Please use the full name instead.
170502  7:38:13 [Note] Plugin 'FEDERATED' is disabled.
170502  7:38:13 InnoDB: The InnoDB memory heap is disabled
170502  7:38:13 InnoDB: Mutexes and rw_locks use GCC atomic builtins
170502  7:38:13 InnoDB: Compressed tables use zlib 1.2.8
170502  7:38:13 InnoDB: Using Linux native AIO
170502  7:38:13 InnoDB: Initializing buffer pool, size = 32.0M
170502  7:38:13 InnoDB: Completed initialization of buffer pool
170502  7:38:13 InnoDB: highest supported file format is Barracuda.
InnoDB: The log sequence number in ibdata files does not match
InnoDB: the log sequence number in the ib_logfiles!
170502  7:38:13  InnoDB: Database was not shut down normally!
InnoDB: Starting crash recovery.
InnoDB: Reading tablespace information from the .ibd files...
InnoDB: Restoring possible half-written data pages from the doublewrite
InnoDB: buffer...
170502  7:38:13  InnoDB: Waiting for the background threads to start
170502  7:38:14 InnoDB: 5.5.54 started; log sequence number 577003798
170502  7:38:14 [Note] Server hostname (bind-address): '127.0.0.1'; port: 3306
170502  7:38:14 [Note]   - '127.0.0.1' resolves to '127.0.0.1';
170502  7:38:14 [Note] Server socket created on IP: '127.0.0.1'.
170502  7:38:14 [Note] Event Scheduler: Loaded 0 events
170502  7:38:14 [Note] /usr/sbin/mysqld: ready for connections.
Version: '5.5.54-0ubuntu0.14.04.1'  socket: '/var/run/mysqld/mysqld.sock'  port: 3306  (Ubuntu)

Can you help me to interpretate the log to find the specific problem.

In this moment I can not affor a droplet with 1GB RAM. For that reason I setup the swap space to see if it improve the server funtioning.

Thanks!