Ansible implementation of one of the following is required: name,list Perform playbooks [root@controller playbook]# ansible-playbook package.yaml Error message [root@controller playbook]# ansible-playbook package.yaml [WARNING]: While constructing a mapping from /root/ansible/playbook/package.yaml, line 11, column 5, found a duplicate dict key (name). Using last defined value only. [WARNING]: Ignoring invalid attribute: state PLAY [app] **************************************************************************************************************************************************************************************************************************************************************** TASK [Gathering Facts] […]
Environment: Virtual Machine + CentOS 7 1. download binary package, the following mysql-5.7.19-linux-glibc2.12-x86_64.tar.gz link is the official website cd /usr/local/src wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.19-linux-glibc2.12-x86_64.tar.gz 2. extract, rename [root@beta src]# tar zxvf mysql-5.7.19-linux-glibc2.12-x86_64.tar.gz [root@beta src]# ls index.html?id=471614 mysql-5.7.19-linux-glibc2.12-x86_64 mysql-5.7.19-linux-glibc2.12-x86_64.tar.gz [root@beta src]# mv mysql-5.7.19-linux-glibc2.12-x86_64 /usr/local/mysql 3. Initialize [root@beta mysql]# useradd -M -s /sbin/nologin mysql [root@beta mysql]# ls bin COPYING […]
RHEL / CentOS 7 Network Teaming Below is an example on how to configure network teaming on RHEL/CentOS 7. It is assumed that you have at least two interface cards. Show Current Network Interfaces [root@rhce-server ~]$ ip link 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 2: eno16777736: […]
How to sync standby database which is lagging behind from primary database Primary Database cluster: cluster1.rmohan.com Standby Database cluster: cluster2.rmohan.com Primary Database: prim Standby database: stand Database version:11.2.0.1.0 Reason:- 1. Might be due to the network outage between the primary and the standby database leading to the archive gaps. Data guard would be able to […]
[root@clusterserver1 ~]# cat /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 192.168.1.20 clusterserver1.rmohan.com clusterserver1 192.168.1.21 clusterserver2.rmohan.com clusterserver2 192.168.1.22 clusterserver3.rmohan.com clusterserver3 perl -pi.orig -e ‘s/SELINUX=enforcing/SELINUX=permissive/g’ /etc/selinux/config setenforce 0 timedatectl status yum install -y ntp systemctl enable ntpd ; systemctl start ntpd run ssh-keygen [root@clusterserver1 ~]# ssh-keygen Generating public/private rsa key pair. Enter file […]
nginx is a high performance web server software. It is a much more flexible and lightweight program than apache. yum install epel-release yum install nginx ifconfig eth0 | grep inet | awk ‘{ print $2 }’ wget –no-cookies –no-check-certificate –header “Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie” “http://download.oracle.com/otn-pub/java/jdk/8u60-b27/jdk-8u60-linux-x64.tar.gz” wget http://mirror.nus.edu.sg/apache/tomcat/tomcat-8/v8.0.30/bin/apache-tomcat-8.0.30.tar.gz tar xzf jdk-8u40-linux-i586.tar.gz mkdir /usr/java/ cd /usr/java/jdk1.8.0_40/ [root@cluster1 java]# […]
study notes 2 — command line file 1, create and delete files Create a file touch xxxx touch -t 20151225 create a file and specify time properties rm xxx delete the file rm -rf forced to delete files 2. Create a directory and delete the directory mkdir -p xxx/yyy recursively create directories; rmdir xxx delete […]
The servlet was taking a long time to compress the log files, and Apache‘s timeout was set to 2min. The error was fixed by increasing the TimeOut Directive on the httpd.conf file: # # Timeout: The number of seconds before receives and sends time out. # ##Timeout 120 Timeout 600
MARIADB MASTER SLAVE Install on both master and slave yum install mariadb-server mariadb -y systemctl enable mariadb systemctl start mariadb.service mysql_secure_installation Master Add below lines on the mysql vi /etc/my.cnf [server] # add follows in [server] section : get binary logs log-bin=mysql-bin # define uniq server ID server-id=101 Restart the mariadb service systemctl restart mariadb.service […]
Install of docker Lets remove all the unnecessary software on the machine yum remove docker docker-client docker-client-latest docker-common docker-latest docker-latest-logrotate docker-logrotate docker-selinux docker-engine-selinux docker-engine now we have to install dependancy software for Docker yum install -y yum-utils device-mapper-persistent-data lvm2 Let add a docker repo yum-config-manager –add-repo https://download.docker.com/linux/centos/docker-ce.repo Enable the yum docker repo on the centos […]
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