部署虚拟开发环境

虽然自己不是软件工程师，但有时候为了测试会写一些小程序，所以常常需要在自己电脑上设置开发环境。由于MacOS原生支持Python，所以我们可以不用那么麻烦的设置开发环境。但为了系统的稳定性，还是不要随便增加或变更自带的python，所以开发环境直接用虚拟环境就可以了，大概构架如下：

完整阅读

Introduction

If you found similar alarms, you can follow the guide and try to workaround the issue.

Problem

My customer found WAE REST API not workable, after checked, found wae-db have issue and report alarm, as follow.
And try to restart the WAE service and reload VM, not any useful.

[root@wae-auto wae-db]# service --status-all | grep wae
JAVA_EXECUTABLE or HSQLDB_JAR_PATH in '/etc/sysconfig/hsqldb' is set to a non-file.
wae-appenginecore is running OK, with PID=18606
wae-core is running OK, with PID=18163
wae-db dead but pid file exists  <<<<<<
wae-designapiserver is running OK, with PID=18847
wae-messaging is running OK, with PID=17874
wae-ni is running OK, with PID=17525
wae-osc is running OK, with PID=18369
wae-svcs-dashui is running OK, with PID=16652
wae-svcs-db is running OK, with PID=16277
wae-svcs-localrepo is not running
wae-svcs-log is running OK, with PID=16497
wae-svcs-logagent is running OK, with PID=16570
wae-svcs-metricsbkr is running OK, with PID=16716
wae-svcs-metricsd is running OK, with PID=16806
wae-svcs-mon is running OK, with PID=16138
wae-svcs-ui is running OK, with PID=16917
wae-system-server is running OK, with PID=16186
wae-web-server is running OK, with PID=17761

完整阅读

If you want to check steps in Ubuntu, can check this attachment: lvm-resize-ubuntu14.04

1. Follow disk info

Check system contents by “sudo df -H”, check all disk status by “sudo fdisk -l”.

[root@frank ~]# df -H
Filesystem             Size  Used Avail Use% Mounted on
/dev/mapper/myvg-root  7.4G  7.4G  4.0M 100% /
devtmpfs               2.1G     0  2.1G   0% /dev
tmpfs                  2.1G  250k  2.1G   1% /dev/shm
tmpfs                  2.1G  9.5M  2.1G   1% /run
tmpfs                  2.1G     0  2.1G   0% /sys/fs/cgroup
/dev/mapper/myvg-home  731M  140M  591M  20% /home
/dev/sda1              521M  126M  396M  25% /boot
/dev/sr0               4.2G  4.2G     0 100% /run/media/root/CentOS 7 x86_64

2. Relationship for VG, PV and LV

完整阅读

搬家之前的一些感受

在Hostgator上顺利用了6年了，我是3年一续费，每次续费都贵一大截，这是欺负老客户么？！太蛋疼了，而且动态ip，什么功能都没有，真是心灰意冷：
痛定思痛，弃用Hostgator！经同事推荐，Bandwagonhost 速度不错，便宜，稳定，而且还是VPS，自由度很大，最好的是每年续费不涨钱:-) 所以我买了他们比较便宜的那款，年费在29美金/year（CN2），比 Hostgator便宜，速度还快！
完整阅读

原始文章：
http://iknow.lenovo.com/detail/dc_148601.html

虚拟机MAC改变后，无法启动，并报错：“Device eth0 does not seem to be present”
出现该问题，是由于MAC地址变更后，操作系统仍然保留原来MAC地址作为eth0，并且将新的MAC地址识别为新的网卡导致的，可以删除文件“/etc/udev/rules.d/70-persistent-net.rule”中老MAC的信息，并把新MAC中的eth1改成eth0，通过start_udev重新加载udev，然后重启网卡恢复：“service network restart”