https://www.zabbix.com/download?zabbix=4.4&os_distribution=centos&os_version=7&db=mysql&ws=apache

SELINUX

AUDIT2ALLOW

yum install policycoreutils-python

cat /var/log/audit/audit.log | grep zabbix_server | grep denied | audit2allow -M zabbix-server_setrlimit
semodule -i zabbix-server_setrlimit.pp
grep AVC /var/log/audit/audit.log* | audit2allow -M systemd-allow; semodule -i systemd-allow.pp

FIREWALL

firewall-cmd --permanent --add-port=10050/tcp
firewall-cmd --permanent --add-port=10051/tcp
firewall-cmd --permanent --add-port=80/tcp
firewall-cmd --reload

To remove the MySQL root password, just run the following script right after installation:

On MySQL 5.7:

password=$(grep -oP 'temporary password(.*): \K(\S+)' /var/log/mysqld.log)
mysqladmin --user=root --password="$password" password aaBB@@cc1122
mysql --user=root --password=aaBB@@cc1122 -e "UNINSTALL PLUGIN validate_password;"
mysqladmin --user=root --password="aaBB@@cc1122" password ""

On MySQL 8.0:

password=$(grep -oP 'temporary password(.*): \K(\S+)' /var/log/mysqld.log)
mysqladmin --user=root --password="$password" password aaBB@@cc1122
mysql --user=root --password=aaBB@@cc1122 -e "UNINSTALL COMPONENT 'file://component_validate_password';"
mysqladmin --user=root --password="aaBB@@cc1122" password ""

Para identificar qual servidor de cache do Google GGC e youtube está sendo utilizado, só acessar o seguinte endereço:

https://redirector.googlevideo.com/report_mapping

Algumas rotas de BGP ficam com gateway recursivo com mesmo gateway da rota default.

Para corrigir isso, deve-ser fazer um filtro alterando o escopo da rota, para o range de IPs utilizando internamente.

Deve-se colocar um valor menor que 40 (padrão do BGP).

https://forum.mikrotik.com/viewtopic.php?t=85699

Using that information and information provided here: http://wiki.mikrotik.com/wiki/Manual:IP/Route, I managed to correct the issue presented. I had to do with scope/target-scope. I never knew what they were used for and still not have a full understanding yet. I did notice the rule where if the scope is greater than the target-scope, the route would not be be used for nexthop lookup. By lowering the BGP route on the inbound filter for the specific subnet that should be used as the next-hop to something lower than 40 (the default for BGP), the floating route followed the desired path.

Comando para atualizar a lista de horários, inclusive horários de verão:

yum update tzdata -y

Comando para listar os horários

zdump -v /usr/share/zoneinfo/America/Sao_Paulo | grep 2019

Comando para sincronizar horário pelo NTP

ntpdate a.ntp.br

Para criar um novo projeto em Angular

ng new NOME_NO_PROJETO

Para instalar Bootstrap e Jquery no projeto Angular

npm install bootstrap jquery --save

"styles": [ 
 "src/styles.css", 
 "./node_modules/bootstrap/dist/css/bootstrap.min.css" 
],

Para criar um módulo

ng g module student

Criar componentes dentro do módulo

ng g c student/student --spec=false 
ng g c student/student-list --spec=false 
ng g c student/student-list-item --spec=false

Iniciar o servidor  web de desenvolvimento

ng serve

Criar o serviço para ser utilizando dentro do módulo

ng g s student/student --spec=false

https://appdividend.com/2018/12/09/how-to-create-angular-modules-to-organize-code/

Manual:

https://cloud.anatel.gov.br/index.php/s/bwE3PAh6xbak9cH#pdfviewer