[root@localhost ~]# free -h
              total        used        free      shared  buff/cache   available
Mem:            15G        3.0G         11G         36M        1.1G         12G
Swap:          7.9G          0B        7.9G
[root@localhost ~]# df
Filesystem              1K-blocks    Used Available Use% Mounted on
devtmpfs                  8091868       0   8091868   0% /dev
tmpfs                     8106452       0   8106452   0% /dev/shm
tmpfs                     8106452    8776   8097676   1% /run
tmpfs                     8106452       0   8106452   0% /sys/fs/cgroup
/dev/mapper/centos-root  52403200 7047240  45355960  14% /
/dev/sda1                 1038336  246324    792012  24% /boot
/dev/mapper/centos-home 228367416  534636 227832780   1% /home
tmpfs                     1621292       0   1621292   0% /run/user/0
[root@localhost ~]# ls -l /etc/yum.repos.d
total 48
-rw-r--r--. 1 root root 1404 Jan  1 21:39 brainy.repo
-rw-r--r--. 1 root root 1663 Jan  1 11:51 CentOS-Base.repo
-rw-r--r--. 1 root root 1309 Nov 23  2020 CentOS-CR.repo
-rw-r--r--. 1 root root  649 Nov 23  2020 CentOS-Debuginfo.repo
-rw-r--r--. 1 root root  314 Nov 23  2020 CentOS-fasttrack.repo
-rw-r--r--. 1 root root  630 Nov 23  2020 CentOS-Media.repo
-rw-r--r--. 1 root root 1331 Nov 23  2020 CentOS-Sources.repo
-rw-r--r--. 1 root root 8515 Nov 23  2020 CentOS-Vault.repo
-rw-r--r--. 1 root root  616 Nov 23  2020 CentOS-x86_64-kernel.repo
-rw-r--r--. 1 root root  245 Jul 27  2021 kernel_v3.repo
[root@localhost ~]# cat /etc/os-release
NAME="CentOS Linux"
VERSION="7 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (Core)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:7"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"

CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"

[root@localhost ~]# yum list installed | grep python3
bind.x86_64                     40:9.16.11-5.4.el7            @brainy-python3_sb
bind-chroot.x86_64              40:9.16.11-5.4.el7            @brainy-python3_sb
bind-libs.x86_64                40:9.16.11-5.4.el7            @brainy-python3_sb
bind-libs-lite.x86_64           40:9.16.11-5.4.el7            @brainy-python3_sb
bind-license.noarch             40:9.16.11-5.4.el7            @brainy-python3_sb
bind-utils.x86_64               40:9.16.11-5.4.el7            @brainy-python3_sb
certbot.noarch                  1.11.0-3.brainy.el7           @brainy-python3_sb
libuv.x86_64                    1:1.40.0-1.brainy.el7         @brainy-python3_sb
lmdb-libs.x86_64                0.9.23-2.el7                  @brainy-python3_sb
php80w.x86_64                   8.0.18-1.1.el7                @brainy-python3_sb
php80w-apcu.x86_64              5.1.19-3.18.brainy.el7        @brainy-python3_sb
php80w-apcu-devel.x86_64        5.1.19-3.18.brainy.el7        @brainy-python3_sb
php80w-bcmath.x86_64            8.0.18-1.1.el7                @brainy-python3_sb
php80w-brotli.x86_64            0.11.1-3.18.el7.8.0           @brainy-python3_sb
php80w-cli.x86_64               8.0.18-1.1.el7                @brainy-python3_sb
php80w-common.x86_64            8.0.18-1.1.el7                @brainy-python3_sb
php80w-dba.x86_64               8.0.18-1.1.el7                @brainy-python3_sb
php80w-dbg.x86_64               8.0.18-1.1.el7                @brainy-python3_sb
php80w-devel.x86_64             8.0.18-1.1.el7                @brainy-python3_sb
php80w-embedded.x86_64          8.0.18-1.1.el7                @brainy-python3_sb
php80w-enchant.x86_64           8.0.18-1.1.el7                @brainy-python3_sb
php80w-ffi.x86_64               8.0.18-1.1.el7                @brainy-python3_sb
php80w-fpm.x86_64               8.0.18-1.1.el7                @brainy-python3_sb
php80w-gd.x86_64                8.0.18-1.1.el7                @brainy-python3_sb
php80w-geoip.x86_64             1.1.1-8.18.brainy.el7         @brainy-python3_sb
php80w-gmp.x86_64               8.0.18-1.1.el7                @brainy-python3_sb
php80w-igbinary.x86_64          3.2.1-1.18.brainy.el7.8.0     @brainy-python3_sb
php80w-igbinary-devel.x86_64    3.2.1-1.18.brainy.el7.8.0     @brainy-python3_sb
php80w-imagick.x86_64           3.4.4-1.18.brainy.el7         @brainy-python3_sb
php80w-imagick-devel.x86_64     3.4.4-1.18.brainy.el7         @brainy-python3_sb
php80w-imap.x86_64              8.0.18-1.1.el7                @brainy-python3_sb
php80w-interbase.x86_64         8.0.18-1.1.el7                @brainy-python3_sb
php80w-intl.x86_64              8.0.18-1.1.el7                @brainy-python3_sb
php80w-ldap.x86_64              8.0.18-1.1.el7                @brainy-python3_sb
php80w-lz4.x86_64               0.4.1-1.18.el7.8.0            @brainy-python3_sb
php80w-mailparse.x86_64         3.1.1-1.18.el7                @brainy-python3_sb
php80w-mbstring.x86_64          8.0.18-1.1.el7                @brainy-python3_sb
php80w-mcrypt.x86_64            1.0.4-1.18.brainy.el7         @brainy-python3_sb
php80w-memcache.x86_64          8.0-1.18.brainy.el7           @brainy-python3_sb
php80w-mhash.x86_64             8.0.18-1.1.el7                @brainy-python3_sb
php80w-msgpack.x86_64           2.1.2-1.18.brainy.el7         @brainy-python3_sb
php80w-msgpack-devel.x86_64     2.1.2-1.18.brainy.el7         @brainy-python3_sb
php80w-mysql.x86_64             8.0.18-1.1.el7                @brainy-python3_sb
php80w-odbc.x86_64              8.0.18-1.1.el7                @brainy-python3_sb
php80w-pdo.x86_64               8.0.18-1.1.el7                @brainy-python3_sb
php80w-pdo_dblib.x86_64         8.0.18-1.1.el7                @brainy-python3_sb
php80w-pear.noarch              1.10.10-7.18.brainy.el7       @brainy-python3_sb
php80w-pgsql.x86_64             8.0.18-1.1.el7                @brainy-python3_sb
php80w-process.x86_64           8.0.18-1.1.el7                @brainy-python3_sb
php80w-pspell.x86_64            8.0.18-1.1.el7                @brainy-python3_sb
php80w-psr.x86_64               1.1.0-4.18.brainy.el7         @brainy-python3_sb
php80w-psr-devel.x86_64         1.1.0-4.18.brainy.el7         @brainy-python3_sb
php80w-redis.x86_64             5.3.2-3.18.brainy.el7         @brainy-python3_sb
php80w-snmp.x86_64              8.0.18-1.1.el7                @brainy-python3_sb
php80w-soap.x86_64              8.0.18-1.1.el7                @brainy-python3_sb
php80w-sodium.x86_64            8.0.18-1.1.el7                @brainy-python3_sb
php80w-sqlsrv.x86_64            5.9.0-1.18.brainy.el7         @brainy-python3_sb
php80w-ssh2.x86_64              1.2-1.18.brainy.el7           @brainy-python3_sb
php80w-tidy.x86_64              8.0.18-1.1.el7                @brainy-python3_sb
php80w-uploadprogress.x86_64    2.0.2-1.18.brainy.el7         @brainy-python3_sb
php80w-xml.x86_64               8.0.18-1.1.el7                @brainy-python3_sb
php80w-xmlrpc.x86_64            20200602-4.18.el7.8.0         @brainy-python3_sb
php80w-yaml.x86_64              2.2.1-3.18.brainy.el7         @brainy-python3_sb
php80w-zendopcache.x86_64       8.0.18-1.1.el7                @brainy-python3_sb
php80w-zts.x86_64               8.0.18-1.1.el7                @brainy-python3_sb
php81w.x86_64                   8.1.9-1.1.el7                 @brainy-python3_sb
php81w-apcu.x86_64              5.1.21-1.5.brainy.el7         @brainy-python3_sb
php81w-apcu-devel.x86_64        5.1.21-1.5.brainy.el7         @brainy-python3_sb
php81w-bcmath.x86_64            8.1.9-1.1.el7                 @brainy-python3_sb
php81w-brotli.x86_64            0.11.1-3.5.el7.8.1            @brainy-python3_sb
php81w-cli.x86_64               8.1.9-1.1.el7                 @brainy-python3_sb
php81w-common.x86_64            8.1.9-1.1.el7                 @brainy-python3_sb
php81w-dba.x86_64               8.1.9-1.1.el7                 @brainy-python3_sb
php81w-dbg.x86_64               8.1.9-1.1.el7                 @brainy-python3_sb
php81w-devel.x86_64             8.1.9-1.1.el7                 @brainy-python3_sb
php81w-embedded.x86_64          8.1.9-1.1.el7                 @brainy-python3_sb
php81w-enchant.x86_64           8.1.9-1.1.el7                 @brainy-python3_sb
php81w-env.x86_64               0.2.1-1.5.brainy.el7          @brainy-python3_sb
php81w-ffi.x86_64               8.1.9-1.1.el7                 @brainy-python3_sb
php81w-fpm.x86_64               8.1.9-1.1.el7                 @brainy-python3_sb
php81w-gd.x86_64                8.1.9-1.1.el7                 @brainy-python3_sb
php81w-geoip.x86_64             1.1.1-1.5.brainy.el7          @brainy-python3_sb
php81w-gmp.x86_64               8.1.9-1.1.el7                 @brainy-python3_sb
php81w-gnupg.x86_64             1.5.1-1.5.el7                 @brainy-python3_sb
php81w-igbinary.x86_64          3.2.7-1.12.brainy.el7.8.1     @brainy-python3_sb
php81w-igbinary-devel.x86_64    3.2.7-1.12.brainy.el7.8.1     @brainy-python3_sb
php81w-imagick.x86_64           3.5.1-1.12.brainy.el7.8.1     @brainy-python3_sb
php81w-imagick-devel.x86_64     3.5.1-1.12.brainy.el7.8.1     @brainy-python3_sb
php81w-imap.x86_64              8.1.9-1.1.el7                 @brainy-python3_sb
php81w-interbase.x86_64         8.1.9-1.1.el7                 @brainy-python3_sb
php81w-intl.x86_64              8.1.9-1.1.el7                 @brainy-python3_sb
php81w-ioncubeloader.x86_64     12.0.1-1.9.el7                @brainy-python3_sb
php81w-ldap.x86_64              8.1.9-1.1.el7                 @brainy-python3_sb
php81w-lz4.x86_64               0.4.1-1.12.el7.8.1            @brainy-python3_sb
php81w-mailparse.x86_64         3.1.2-1.12.el7                @brainy-python3_sb
php81w-mbstring.x86_64          8.1.9-1.1.el7                 @brainy-python3_sb
php81w-mcrypt.x86_64            1.0.4-1.12.brainy.el7         @brainy-python3_sb
php81w-memcache.x86_64          8.0-1.5.brainy.el7            @brainy-python3_sb
php81w-mhash.x86_64             8.1.9-1.1.el7                 @brainy-python3_sb
php81w-msgpack.x86_64           2.2.0RC1-1.5.brainy.el7       @brainy-python3_sb
php81w-msgpack-devel.x86_64     2.2.0RC1-1.5.brainy.el7       @brainy-python3_sb
php81w-mysql.x86_64             8.1.9-1.1.el7                 @brainy-python3_sb
php81w-odbc.x86_64              8.1.9-1.1.el7                 @brainy-python3_sb
php81w-pdo.x86_64               8.1.9-1.1.el7                 @brainy-python3_sb
php81w-pdo_dblib.x86_64         8.1.9-1.1.el7                 @brainy-python3_sb
php81w-pear.noarch              1.10.10-1.9.brainy.el7        @brainy-python3_sb
php81w-pgsql.x86_64             8.1.9-1.1.el7                 @brainy-python3_sb
php81w-process.x86_64           8.1.9-1.1.el7                 @brainy-python3_sb
php81w-pspell.x86_64            8.1.9-1.1.el7                 @brainy-python3_sb
php81w-psr.x86_64               1.0.1-1.5.brainy.el7          @brainy-python3_sb
php81w-psr-devel.x86_64         1.0.1-1.5.brainy.el7          @brainy-python3_sb
php81w-redis.x86_64             5.3.7-1.12.brainy.el7         @brainy-python3_sb
php81w-smbclient.x86_64         1.0.6-1.5.brainy.el7.8.1      @brainy-python3_sb
php81w-snmp.x86_64              8.1.9-1.1.el7                 @brainy-python3_sb
php81w-soap.x86_64              8.1.9-1.1.el7                 @brainy-python3_sb
php81w-sodium.x86_64            8.1.9-1.1.el7                 @brainy-python3_sb
php81w-sqlsrv.x86_64            5.10.0-1.5.el7                @brainy-python3_sb
php81w-ssh2.x86_64              1.3.1-1.5.brainy.el7          @brainy-python3_sb
php81w-tidy.x86_64              8.1.9-1.1.el7                 @brainy-python3_sb
php81w-uploadprogress.x86_64    2.0.2-1.5.brainy.el7          @brainy-python3_sb
php81w-xml.x86_64               8.1.9-1.1.el7                 @brainy-python3_sb
php81w-xmlrpc.x86_64            1.0.0-1.5.el7                 @brainy-python3_sb
php81w-yaml.x86_64              2.2.2-1.5.brainy.el7          @brainy-python3_sb
php81w-zendopcache.x86_64       8.1.9-1.1.el7                 @brainy-python3_sb
php81w-zip.x86_64               1.20.1-1.el7                  @brainy-python3_sb
php81w-zts.x86_64               8.1.9-1.1.el7                 @brainy-python3_sb
python2-Cython.x86_64           0.28.6-1.el7                  @brainy-python3_sb
python2-cffi.x86_64             1.11.5-7.1.el7                @brainy-python3_sb
python2-decorator.noarch        4.3.0-3.el7                   @brainy-python3_sb
python2-nose.noarch             1.3.7-20.el7                  @brainy-python3_sb
python2-numpy.x86_64            1:1.14.1-2.el7                @brainy-python3_sb
python2-ply.noarch              3.9-10.el7                    @brainy-python3_sb
python2-pycparser.noarch        2.14-16.el7                   @brainy-python3_sb
python2-setuptools.noarch       40.4.3-2.el7                  @brainy-python3_sb
python3.x86_64                  3.6.8-18.el7                  @updates
python3-Cython.x86_64           0.28.6-1.el7                  @brainy-python3_sb
python3-acme.noarch             1.11.0-3.brainy.el7           @brainy-python3_sb
python3-asn1crypto.noarch       1.3.0-2.el7                   @myrepo-centos
python3-atomicwrites.noarch     1.3.0-2.el7                   @brainy-python3_sb
python3-attrs.noarch            18.2.0-2.el7                  @brainy-python3_sb
python3-certbot.noarch          1.11.0-3.brainy.el7           @brainy-python3_sb
python3-certbot-dns-cloudflare.noarch
                                1.12.0-2.brainy.el7           @brainy-python3_sb
python3-cffi.x86_64             1.11.5-7.1.el7                @brainy-python3_sb
python3-chardet.noarch          3.0.4-9.el7                   @myrepo-centos
python3-cloudflare.noarch       2.1.0-12.brainy.el7           @brainy-python3_sb
python3-configargparse.noarch   0.14.0-5.brainy.el7           @brainy-python3_sb
python3-configobj.noarch        5.0.6-15.brainy.el7           @myrepo-centos
python3-cryptography.x86_64     2.1.4-1.el7                   @myrepo-centos
python3-distro.noarch           1.3.0-5.brainy.el7            @myrepo-centos
python3-future.noarch           0.17.1-0.3.brainy.el7         @brainy-python3_sb
python3-idna.noarch             2.8-1.el7                     @myrepo-centos
python3-josepy.noarch           1.2.0-2.brainy.el7            @myrepo-centos
python3-libs.x86_64             3.6.8-18.el7                  @updates
python3-linecache2.noarch       1.0.0-19.el7                  @brainy-python3_sb
python3-mock.noarch             2.0.0-14.el7                  @brainy-python3_sb
python3-ndg_httpsclient.noarch  0.4.0-14.brainy.el7           @myrepo-centos
python3-numpy.x86_64            1:1.14.1-2.el7                @brainy-python3_sb
python3-olefile.noarch          0.46-2.el7                    @myrepo-centos
python3-parsedatetime.noarch    2.4-10.brainy.el7             @brainy-python3_sb
python3-pathlib2.noarch         2.3.4-3.brainy.el7            @brainy-python3_sb
python3-pbr.noarch              5.1.2-4.el7                   @brainy-python3_sb
python3-pillow.x86_64           5.3.0-1.el7                   @myrepo-centos
python3-pip.noarch              9.0.3-8.el7                   @base
python3-ply.noarch              3.9-10.el7                    @brainy-python3_sb
python3-py.noarch               1.7.0-4.el7                   @brainy-python3_sb
python3-pyOpenSSL.noarch        17.3.0-3.brainy.el7           @myrepo-centos
python3-pyasn1.noarch           0.1.9-20.el7                  @myrepo-centos
python3-pyasn1-modules.noarch   0.1.9-20.el7                  @myrepo-centos
python3-pycparser.noarch        2.14-16.el7                   @brainy-python3_sb
python3-pyrfc3339.noarch        1.0-12.brainy.el7             @myrepo-centos
python3-pysocks.noarch          1.6.8-4.el7                   @myrepo-centos
python3-pytz.noarch             2018.5-4.el7                  @brainy-python3_sb
python3-pyyaml.x86_64           5.3-3.brainy.el7              @brainy-python3_sb
python3-regex.x86_64            2019.05.25-1.el7              @myrepo-centos
python3-requests.noarch         2.22.0-5.el7                  @myrepo-centos
python3-requests-toolbelt.noarch
python3-scandir.x86_64          1.8-2.braainy.el7             @myrepo-centos
python3-service-identity.noarch 18.1.0-1.el7                  @myrepo-centos
python3-setuptools.noarch       39.2.0-10.el7                 @base
python3-six.noarch              1.11.0-5.el7                  @brainy-python3_sb
python3-textile.noarch          3.0.4-1.el7                   @myrepo-centos
python3-urllib3.noarch          1.24.3-4.el7                  @myrepo-centos
python3-zope-component.noarch   4.3.0-7.el7                   @myrepo-centos
python3-zope-event.noarch       4.2.0-12.el7                  @myrepo-centos
python3-zope-interface.x86_64   4.4.3-1.el7                   @myrepo-centos
rclone.x86_64                   1.54.0-1.el7                  @brainy-python3_s