Good afternoon, my server crashed, when starting the analysis in the logs I found these memory messages.

Would this be relevant to the server's freezer?

[JovaTricolo@xxx log]$ grep -R "Feb 11" messages | egrep -v "audit" | egrep -r "Warning|warning|error|erro|panic|boot|memory"

Feb 11 11:19:56 xxx rsyslogd-2036: error starting up disk queue, using pure in-memory mode [try http://www.rsyslog.com/e/2036 ]
Feb 11 11:19:56 xxx kernel: init_memory_mapping: 0000000000000000-00000000bd2f0000
Feb 11 11:19:56 xxx kernel: init_memory_mapping: 0000000100000000-0000002040000000
Feb 11 11:19:56 xxx kernel: bootmap [0000000000100000 - 0000000000307fff] pages 208
Feb 11 11:19:56 xxx kernel: (8 early reservations) ==> bootmem [0000000000 - 1040000000]
Feb 11 11:19:56 xxx kernel: bootmap [0000001040035000 - 0000001040234fff] pages 200
Feb 11 11:19:56 xxx kernel: (8 early reservations) ==> bootmem [1040000000 - 2040000000]
Feb 11 11:19:56 xxx kernel: Reserving 137MB of memory at 48MB for crashkernel (System RAM: 132096MB)
Feb 11 11:19:56 xxx kernel: PM: Registered nosave memory: 000000000009c000 - 0000000000100000
Feb 11 11:19:56 xxx kernel: PM: Registered nosave memory: 00000000bd2f0000 - 00000000bd31c000
Feb 11 11:19:56 xxx kernel: PM: Registered nosave memory: 00000000bd31c000 - 00000000bd35b000
Feb 11 11:19:56 xxx kernel: PM: Registered nosave memory: 00000000bd35b000 - 00000000c0000000
Feb 11 11:19:56 xxx kernel: PM: Registered nosave memory: 00000000c0000000 - 00000000e0000000
Feb 11 11:19:56 xxx kernel: PM: Registered nosave memory: 00000000e0000000 - 00000000f0000000
Feb 11 11:19:56 xxx kernel: PM: Registered nosave memory: 00000000f0000000 - 00000000fe000000
Feb 11 11:19:56 xxx kernel: PM: Registered nosave memory: 00000000fe000000 - 0000000100000000
Feb 11 11:19:56 xxx kernel: please try 'cgroup_disable=memory' option if you don't want memory cgroups
Feb 11 11:19:56 xxx kernel: Initializing cgroup subsys memory
Feb 11 11:19:56 xxx kernel: Freeing initrd memory: 15695k freed
Feb 11 11:19:56 xxx kernel: Non-volatile memory driver v1.3
Feb 11 11:19:56 xxx kernel: crash memory driver: version 1.1
Feb 11 11:19:56 xxx kernel: Freeing unused kernel memory: 1252k freed
Feb 11 11:19:56 xxx kernel: Freeing unused kernel memory: 1051k freed
Feb 11 11:19:56 xxx kernel: Freeing unused kernel memory: 1734k freed
Feb 11 11:19:56 xxx kernel: EXT4-fs (dm-13): warning: checktime reached, running e2fsck is recommended
Feb 11 11:19:56 xxx kernel: EXT4-fs (dm-14): warning: checktime reached, running e2fsck is recommended
Feb 11 11:19:56 xxx kernel: EXT4-fs (dm-15): warning: checktime reached, running e2fsck is recommended
Feb 11 11:19:56 xxx kernel: EXT4-fs (dm-16): warning: maximal mount count reached, running e2fsck is recommended
Feb 11 11:50:05 xxx snmpd[24795]: Warning: no access control information configured.#012 It's unlikely this agent can serve any useful purpose in this state.#012 Run "snmpconf -g basic_setup" to help you configure the snmpd.conf file for this agent.
[JovaTricolo@xxx log]$

Bolded some lines for emphasis only; did you read those lines? Apparently, your server wasn't shut down correctly or is having a disk error, and it's telling you to run a disk check (and giving you the command) to check that/those devices.

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