mysql – MariaDB crashed: Unknown/unsupported storage engine: InnoDB

I’ve a Debian GNU/Linux 9 (4GB, 2 CPUs) on Digitalocean. Tonight (I’ve done nothing) my DB (mariaDB) crashed with this errors. I ran a wordpress with InnoDB and myISAM tables:

2020-10-17  0:51:18 140430430813568 (Note) InnoDB: Using mutexes to ref count buffer pool pages
2020-10-17  0:51:18 140430430813568 (Note) InnoDB: The InnoDB memory heap is disabled
2020-10-17  0:51:18 140430430813568 (Note) InnoDB: Mutexes and rw_locks use GCC atomic builtins
2020-10-17  0:51:18 140430430813568 (Note) InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier
2020-10-17  0:51:18 140430430813568 (Note) InnoDB: Compressed tables use zlib 1.2.8
2020-10-17  0:51:18 140430430813568 (Note) InnoDB: Using Linux native AIO
2020-10-17  0:51:18 140430430813568 (Note) InnoDB: Using SSE crc32 instructions
2020-10-17  0:51:18 140430430813568 (Note) InnoDB: Initializing buffer pool, size = 500.0M
InnoDB: mmap(549126144 bytes) failed; errno 12
2020-10-17  0:51:18 140430430813568 (ERROR) InnoDB: Cannot allocate memory for the buffer pool
2020-10-17  0:51:18 140430430813568 (ERROR) Plugin 'InnoDB' init function returned error.
2020-10-17  0:51:18 140430430813568 (ERROR) Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
2020-10-17  0:51:18 140430430813568 (Note) Plugin 'FEEDBACK' is disabled.
2020-10-17  0:51:18 140430430813568 (ERROR) **Unknown/unsupported storage engine: InnoDB**
2020-10-17  0:51:18 140430430813568 (ERROR) Aborting

My full DB conf:

# These groups are read by MariaDB server.
# Use it for options that only the server (but not clients) should see
# See the examples of server my.cnf files in /usr/share/mysql/

# this is read by the standalone daemon and embedded servers

# this is only for the mysqld standalone daemon

# * Basic Settings
user        = mysql
pid-file    = /var/run/mysqld/
socket      = /var/run/mysqld/mysqld.sock
port        = 3306
basedir     = /usr
datadir     = /var/lib/mysql
tmpdir      = /tmp
lc-messages-dir = /usr/share/mysql

# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
bind-address        =

# * Fine Tuning
key_buffer_size     = 16M
max_allowed_packet  = 16M
thread_stack        = 192K
thread_cache_size       = 8
# This replaces the startup script and checks MyISAM tables if needed
# the first time they are touched
myisam_recover_options  = BACKUP
#max_connections        = 100
#table_cache            = 64
#thread_concurrency     = 10

innodb_buffer_pool_instances = 1
innodb_buffer_pool_size = 500M
max_heap_table_size     = 25M
tmp_table_size          = 25M
#log_slow_queries        = /var/log/mysql/mysql-slow.log
#long_query_time = 2

# * Query Cache Configuration
query_cache_limit   = 2M
query_cache_size        = 50M

# * Logging and Replication
# Both location gets rotated by the cronjob.
# Be aware that this log type is a performance killer.
# As of 5.1 you can enable the log at runtime!
#general_log_file        = /var/log/mysql/mysql.log
#general_log             = 1
# Error log - should be very few entries.
log_error = /var/log/mysql/error.log
# Enable the slow query log to see queries with especially long duration
#slow_query_log_file    = /var/log/mysql/mariadb-slow.log
#long_query_time = 10
#log_slow_rate_limit    = 1000
#log_slow_verbosity = query_plan
# The following can be used as easy to replay backup logs or for replication.
# note: if you are setting up a replication slave, see README.Debian about
#       other settings you may need to change.
#server-id      = 1
#log_bin            = /var/log/mysql/mysql-bin.log
expire_logs_days    = 10
max_binlog_size   = 100M
#binlog_do_db       = include_database_name
#binlog_ignore_db   = exclude_database_name

# * InnoDB
# InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/.
# Read the manual for more InnoDB related options. There are many!

# * Security Features
# Read the manual, too, if you want chroot!
# chroot = /var/lib/mysql/
# For generating SSL certificates you can use for example the GUI tool "tinyca".
# ssl-ca=/etc/mysql/cacert.pem
# ssl-cert=/etc/mysql/server-cert.pem
# ssl-key=/etc/mysql/server-key.pem
# Accept only connections using the latest and most secure TLS protocol version.
# ..when MariaDB is compiled with OpenSSL:
# ssl-cipher=TLSv1.2
# ..when MariaDB is compiled with YaSSL (default in Debian):
# ssl=on

# * Character sets
# MySQL/MariaDB default is Latin1, but in Debian we rather default to the full
# utf8 4-byte character set. See also client.cnf
character-set-server  = utf8mb4
collation-server      = utf8mb4_general_ci

# * Unix socket authentication plugin is built-in since 10.0.22-6
# Needed so the root database user can authenticate without a password but
# only when running as the unix root user.
# Also available for other users if required.
# See

# this is only for embedded server

# This group is only read by MariaDB servers, not by MySQL.
# If you use the same .cnf file for MySQL and MariaDB,
# you can put MariaDB-only options here

# This group is only read by MariaDB-10.1 servers.
# If you use the same .cnf file for MariaDB of different versions,
# use this group for options that older servers don't understand

Here my first page of htop
htop result after some minutes
Could not export/copy htop result.

I would be happy if you could help me out!!

Thanks a lot

crash – OBS Studio crashed with SIGSEGV in avcodec_find_best_pix_fmt_of_list ( segmentation fault )

My Obs Studio, after pressing record button, crash and close automatically and show this problem:

enter image description here

osb crashed with (sigsegv)(2) in avcodec find best pix fmt of list

And its log file is :

09:44:41 AM.440: CPU Name: Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz
09:44:41 AM.440: CPU Speed: 800.040MHz
09:44:41 AM.441: Physical Cores: 2, Logical Cores: 4
09:44:41 AM.441: Physical Memory: 11882MB Total, 222MB Free
09:44:41 AM.441: Kernel Version: Linux 5.4.0-26-generic
09:44:41 AM.486: Distribution: "Ubuntu" "20.10"
09:44:41 AM.487: Window System: X11.0, Vendor: The X.Org Foundation, Version: 1.20.8
09:44:41 AM.535: Portable mode: false
09:44:43 AM.112: OBS 25.0.8+dfsg1-3 (linux)
09:44:43 AM.112: ---------------------------------
09:44:43 AM.118: ---------------------------------
09:44:43 AM.118: audio settings reset:
09:44:43 AM.118:    samples per sec: 44100
09:44:43 AM.118:    speakers:        2
09:44:43 AM.205: ---------------------------------
09:44:43 AM.205: Initializing OpenGL...
09:44:44 AM.174: Loading up OpenGL on adapter NVIDIA Corporation GeForce 920MX/PCIe/SSE2
09:44:44 AM.174: OpenGL loaded successfully, version 3.3.0 NVIDIA 450.51.06, shading language 3.30 NVIDIA via Cg compiler
09:44:44 AM.332: ---------------------------------
09:44:44 AM.332: video settings reset:
09:44:44 AM.332:    base resolution:   1680x1050
09:44:44 AM.332:    output resolution: 1680x1050
09:44:44 AM.332:    downscale filter:  Bicubic
09:44:44 AM.332:    fps:               30/1
09:44:44 AM.332:    format:            NV12
09:44:44 AM.332:    YUV mode:          601/Partial
09:44:44 AM.333: NV12 texture support not available
09:44:44 AM.370: Audio monitoring device:
09:44:44 AM.370:    name: Default
09:44:44 AM.370:    id: default
09:44:44 AM.376: ---------------------------------
09:44:44 AM.415: Failed to load 'en-US' text for module: ''
09:44:45 AM.251: A DeckLink iterator could not be created.  The DeckLink drivers may not be installed
09:44:45 AM.251: No blackmagic support
09:44:46 AM.525: NVENC supported
09:44:46 AM.525: FFMPEG VAAPI supported
09:44:47 AM.096: VLC found, VLC video source enabled
09:44:47 AM.097: ---------------------------------
09:44:47 AM.097:   Loaded Modules:
09:44:47 AM.097:
09:44:47 AM.097:
09:44:47 AM.097:
09:44:47 AM.097:
09:44:47 AM.097:
09:44:47 AM.097:
09:44:47 AM.097:
09:44:47 AM.097:
09:44:47 AM.097:
09:44:47 AM.097:
09:44:47 AM.097:
09:44:47 AM.097:
09:44:47 AM.097:
09:44:47 AM.097:
09:44:47 AM.097:
09:44:47 AM.097:
09:44:47 AM.097:
09:44:47 AM.097: ---------------------------------
09:44:47 AM.163: ==== Startup complete ===============================================
09:44:47 AM.189: Service '' not found
09:44:47 AM.245: All scene data cleared
09:44:47 AM.245: ------------------------------------------------
09:44:47 AM.257: pulse-input: Server name: 'pulseaudio 13.99.1'
09:44:47 AM.259: pulse-input: Audio format: s16le, 44100 Hz, 2 channels
09:44:47 AM.259: pulse-input: Started recording from 'alsa_output.pci-0000_00_1f.3.analog-stereo.monitor'
09:44:47 AM.259: (Loaded global audio device): 'Desktop Audio'
09:44:47 AM.363: pulse-input: Server name: 'pulseaudio 13.99.1'
09:44:47 AM.366: pulse-input: Audio format: s16le, 44100 Hz, 2 channels
09:44:47 AM.366: pulse-input: Started recording from 'alsa_input.pci-0000_00_1f.3.analog-stereo'
09:44:47 AM.366: (Loaded global audio device): 'Mic/Aux'
09:44:47 AM.372: xshm-input: Geometry 1680x1050 @ 1920,0
09:44:47 AM.374: Switched to scene 'Scene'
09:44:47 AM.375: ------------------------------------------------
09:44:47 AM.375: Loaded scenes:
09:44:47 AM.375: - scene 'Scene':
09:44:47 AM.375:     - source: 'Screen Capture (XSHM)' (xshm_input)
09:44:47 AM.375: ------------------------------------------------
09:44:47 AM.938: adding 69 milliseconds of audio buffering, total audio buffering is now 69 milliseconds (source: Desktop Audio)
09:44:47 AM.938: 

also my OS version is :

so@sosa:/var/www/html$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu Groovy Gorilla (development branch)
Release:    20.10
Codename:   groovy

I have googled the osb crashed with sigsegv in avcodec find best pix fmt of list and don’t find any related solution, also i have asked here about this problem, which dont find any answer and today i have tried to reinstall OBS Studio by Synaptic Package Manager in Ubuntu which don’t solved my problem, so i asked here.

Thanks for your attention.

how do you reinstall windows 10 pro using installation media on a black screen crashed laptop?

on my other laptop which is my "work laptop" i use windows 10 pro. After an automatic windows update my laptop (bmax y11 convertible) crashed and began booting to the boot manager or UEFI. I had tried several different methods and settings for booting back into windows which all failed. i messed with some display output settings or something i didnt know nothing about and i think i switched my display output to hdmi. now i can only boot to a blank black screen. i have tried to reinstall windows using downloaded bootable installation media from the microsoft download center but when i insert the usb drive and boot i still have nothing but a black screen. Please help as i am a single mother of 4 trying to school my babies virtually to keep them safe and attempting to succeed in working from home as an independent agent using my crashed and useless "work laptop"!!!!!!

software recommendation – My installation crashed

Yesterday I decided to install Ubuntu (from a bootable pendrive) alongside Windows. During the installation Ubuntu didn’t recognize Windows, so I manually partitioned the disk and started the installation. A few minutes into the installation process it crashed, the error message said something about not being able to install grub. Everything froze, so I had to power off and on again. I had a lot of trouble with a problematic grub shell, but eventually was able to run Boot-Repair from the live USB drive and booted into the Ubuntu that I had installed in my computer. It seems everything is working OK.

Ubuntu seems to be working OK. The only thing not working is “hibernate”.
Is there a way to check if Ubuntu is correctly installed?

reactjs – State changed from starting to crashed

estoy trantando de hacer deploy de una aplicacion web echa en react, con el comando npx create-react-app --template typescript, todo normal, el proyecto lo estoy subiendo a heroku, pero al ingresar me devuelve el Application error de heroku, y en la consola me muestra esto:

2020-08-07T00:22:58.903383+00:00 heroku[web.1]: Starting process with command `npm start`
2020-08-07T00:23:01.524320+00:00 app[web.1]:
2020-08-07T00:23:01.524336+00:00 app[web.1]: > frontend@0.1.0 start /app
2020-08-07T00:23:01.524337+00:00 app[web.1]: > react-scripts start
2020-08-07T00:23:01.524337+00:00 app[web.1]:
2020-08-07T00:23:04.112800+00:00 app[web.1]: ℹ 「wds」: Project is running at
2020-08-07T00:23:04.113178+00:00 app[web.1]: ℹ 「wds」: webpack output is served from
2020-08-07T00:23:04.113271+00:00 app[web.1]: ℹ 「wds」: Content not from webpack is served from /app/public
2020-08-07T00:23:04.113357+00:00 app[web.1]: ℹ 「wds」: 404s will fallback to /
2020-08-07T00:23:04.113530+00:00 app[web.1]: Starting the development server...
2020-08-07T00:23:04.113532+00:00 app[web.1]:
2020-08-07T00:23:04.191902+00:00 heroku[web.1]: Process exited with status 0
2020-08-07T00:23:04.225928+00:00 heroku[web.1]: State changed from starting to crashed
2020-08-07T00:23:04.228748+00:00 heroku[web.1]: State changed from crashed to starting
2020-08-07T00:23:12.542665+00:00 heroku[web.1]: Starting process with command `npm start`
2020-08-07T00:23:14.727877+00:00 app[web.1]:
2020-08-07T00:23:14.727901+00:00 app[web.1]: > frontend@0.1.0 start /app
2020-08-07T00:23:14.727901+00:00 app[web.1]: > react-scripts start
2020-08-07T00:23:14.727901+00:00 app[web.1]:
2020-08-07T00:23:17.274918+00:00 app[web.1]: ℹ 「wds」: Project is running at
2020-08-07T00:23:17.275295+00:00 app[web.1]: ℹ 「wds」: webpack output is served from
2020-08-07T00:23:17.275368+00:00 app[web.1]: ℹ 「wds」: Content not from webpack is served from /app/public
2020-08-07T00:23:17.275438+00:00 app[web.1]: ℹ 「wds」: 404s will fallback to /
2020-08-07T00:23:17.275596+00:00 app[web.1]: Starting the development server...
2020-08-07T00:23:17.275597+00:00 app[web.1]:
2020-08-07T00:23:17.374732+00:00 heroku[web.1]: Process exited with status 0
2020-08-07T00:23:17.408529+00:00 heroku[web.1]: State changed from starting to crashed
2020-08-07T00:23:18.134850+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" request_id=5e7f2956-5121-4da3-bd10-2118542ffbf0 fwd="" dyno= connect= service= status=503 bytes= protocol=https
2020-08-07T00:23:18.838008+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" request_id=2c08df67-393a-4017-95b1-2640bf58e6d4 fwd="" dyno= connect= service= status=503 bytes= protocol=https
2020-08-07T00:23:20.008776+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" request_id=8ba6cd1a-7757-48ec-85ec-e63fd533a809 fwd="" dyno= connect= service= status=503 bytes= protocol=https

no entiendo cual seria el problema, pense que era un error de mi aplicacion, pero genere otro proyecto de react para subirlo asi nomas como se genera, pero igual da el error, me parece raro por que antes de subir este proyecto subi mi backend y se desplego sin errores, pero me esta dando este error ahora, ayuda

high sierra – After Disk Utility crashed while adding a new partition, main APFS container (macOS + user data) became unbootable

I’m running macOS High Sierra on early-2015 Macbook Pro.

I used to have two more partitions: one with Bootcamp, and the other one as a shared FAT32 folder.

As far as I remember, at some point I made the mistake of using something other than Disk Utility to manage my partitions. I messed up GUIDs but I fixed them manually later, and deleted the bootcamp drive.

I tried formatting the FAT32 drive as APFS and Disk Utility crashed and I ended up with the small “VM”-named drive (I named it that way, and it was intended to be around 25GB). While I was running with no problems afterwards, after a reboot my main APFS drive (Macintosh HD, 387GB) no longer boots. (and does not show up on the boot menu) and shows up as unformatted on all disk tools I could test. (doesn’t show up on DiskUtil at all). I have tried changing the GUID but it still doesn’t boot.

I currently don’t have a Linux stick, but I’ll create one if you need more info. (and if the solution requires one)

overview disk partition

PS: I’m very sorry for the image quality and size, but I don’t have my computer at hand to fix them.

Windows 10 crashed. Reinstalled and now need to install fresh BlueStacks. Can I get the old instances somehow from the Windows.old folder?

I had BlueStacks running on Windows 10 and then I got the Blue screen of death. I need to reinstall windows. My existing BlueStacks will be save in Windows.old. Is there a way to "move" the old instances back once I reinstall Windows and install a fresh BlueStacks again?

❕NEWS – Reasons For Bitcoin Crashed Last July 10 and Analysis | Proxies-free

According to statistical data, an exchange was responsible for the drop of bitcoin last July 10, 2020, where bitcoin dropped down 150$ in a just a few seconds, more data said that the cause for the drop was bitcoin miners who sold their bitcoins at once during the time, the effect of this case was felt market-wide,

But after the dropped, bitcoin immediately rebounded back up, some analyst suspect that after the sell-off investors were jumping to buy bitcoin, increasing the demand at the same time

Chrome Automation Extension has Crashed – Using Selenium in Python

I’m trying to automate some stuffs via Chrome by using Selenium in Python

When I execute the code, I’m getting an error like in Pop-up format

Pop-up is showing

In Chrome it’s showing like below

enter image description here

Note: I found some similar stuffs but which is in C# reference here which is not actually solved my problem!

So based on my debugging I’ve added some chrome options in my code

from import Options
chrome_options = Options()

After ran my code I’m getting an error in IDE like

WebDriverException: unknown error: Chrome failed to start: exited normally.
  (chrome not reachable)

As I’m new to Automation so unable to deep dive into the error can anyone help me here to move forward in my carrier

Additinal Information

  • IDE Used: Spyder
  • Chrome Version: Version 83.0.4103.116 (Official Build) (64-bit)
  • Chrome Driver: 83.0.4103.39
  • Python Version: Python 3.7.0

Thanks in Advance

bitcoind – Recover corrupted wallet due to system crashed

My server was crashed suddenly and didn’t shut down bitcoin core probably, so now my wallet was corrupted due to it didn’t be released. I try to moved the corrupted wallet to a new server but it can’t be load:

Wallet file verification failed: wallet.dat corrupt, salvage failed

I have also tried to use pywallet to rescue, but getting this error:

ERROR:root:Couldn't open wallet.dat/main. Try quitting Bitcoin and running this again.

I suspect that my wallet.dat was totally corrupt so pywallet couldn’t found main . Any help on this please ? Possible to get back my privatekey from wallet.dat please ? Thanks alot.


bitcoin version: v0.18
os: centos7