linux随笔

1 定时任务

*/2 * * * * root /usr/sbin/ntpdate 10.6.131.22 > /dev/null 2>&1

 

 

2 删除卡死namspace

kubectl proxy

curl -k -H "Content-Type: application/json" -X PUT --data-binary @mon.json 127.0.0.1:8001/api/v1/namespaces/system-monitoring/finalize

 

 

3 JAVA环境配置

export JAVA_HOME=/root/jdk/jdk1.8.0_144
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/jre/lib/rt.jar:${JAVA_HOME}/lib/dt.jar:${JAVA_HOME}/lib/tools.jar
export PATH=$PATH:${JAVA_HOME}/bin

 

4 清理BUFFER/CACHE

echo 1 > /proc/sys/vm/drop_caches