Build High Availability Network
During update process I got below error message The GPG keys listed for the “MySQL 8.0 Community Server” repository are already installed but they are not correct for this package. Check that the correct key URLs are configured for this Read More
Download centos boot drive Boot, select Language, Select networking – enable network On Instalation Source view on the network http: http://mirror.init7.net/centos/8/BaseOS/x86_64/os/ dropdown – Repository URL Select instalation package Configure HDD Install System
Using Zabbix I am monitoring MySQL instance data. To allow the Zabbix agent to connect MySQL and run MySQL command we need to add an exception for SELinux rules. module zabbix_agent_mysql 1.0; require { type mysqld_t; type mysqld_etc_t; type zabbix_agent_t; Read More
Base on post from https://www.zabbix.com/forum/zabbix-help/367261-selinux-and-zabbix Install: Generate custom SELinux plicy file for Zabbix grep zabbix_t /var/log/audit/audit.log | audit2allow -M zabbix_server_custom Load new policy semodule -i zabbix_server_custom.pp There is possibility that the server will not start correctly. Repeat above steps several Read More
Command line speed test curl -s https://raw.githubusercontent.com/sivel/speedtest-cli/master/speedtest.py | python –
#netstat -nt | grep :80 | wc -l # netstat -plan|grep :80 | wc -l # netstat -an | grep ‘EST’ | wc -l # netstat -ant | grep ESTABLISHED | grep :80 | wc -l # ps -A | Read More
When creating a template I want to use this same template in QA environment and Production environment without any changes when moving to production. I achieve this using user macros. Template Add macro {$ODBCMYSQLCLUSTER} => db ( this value is Read More
Two level discovery Create discovery rules Type: database monitoring key: db.odbc.discovery[daily_sales,db_qa_masqa_3306] SQL: select term_no as TERMNO ,sum(amount) as AMOUNT from p_trx where trx_date > curdate() group by term_no item prototype Name: Daily sales term 2: {#TERMNO} Type: Database monitoring key:db.odbc.select[sales{#TERMNO},db_qa_masqa_3306] Read More
When installing epel repository in centos in some conditions there is an error during yum update. This is an epel repository bug https://bugs.centos.org/view.php?id=12597 Solution Work around applied: In /etc/yum.repos.d/epel.repo, commented out the following lines; #mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-7&arch=$basearch Enabled baseurl lines in configuration Read More
Download java.tar.gz file Unzip to /usr/java/jdkVERSION Create link for latest and default Use alternative to setup default java envirement See your current envirement alternatives –config java There is 1 program that provides ‘java’. Selection Command ———————————————– *+ 1 java-1.8.0-openjdk.x86_64 (/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.141-1.b16.el7_3.x86_64/jre/bin/java) Read More