Author Archives: admin

CentOS snmpd Logging

After setting up snmpd you may get a lot of messages in /var/log/messages: Sep 24 04:04:04 hostname snmpd[3016]: Received SNMP packet(s) from UDP: [dot.quad.ip.address]:57229 Sep 24 04:04:04 hostname snmpd[3016]: Received SNMP packet(s) from UDP: [dot.quad.ip.address]:37295 Sep 24 04:04:04 hostname snmpd[3016]: Received SNMP packet(s) from UDP: [dot.quad.ip.address]:56589 Sep 24 04:04:04 hostname snmpd[3016]: Received SNMP packet(s) from… Read More »

CentOS Repositories

[root@oxygen ~]# cd /etc/yum.repos.d/ [root@oxygen yum.repos.d]# ls CentOS-Base.repo CentOS-Debuginfo.repo CentOS-Media.repo CentOS-Vault.repo epel-testing.repo CentOS-CR.repo CentOS-fasttrack.repo CentOS-Sources.repo epel.repo

Is rpm still useful?

Where does that file come from? # rpm -qf /etc/yum.repos.d/epel.repo epel-release-7-11.noarch When was it installed? # rpm -qif /etc/yum.repos.d/epel.repo | grep Install Install Date: Sun 10 Jun 2018 03:26:11 BST What does it need? # rpm -q –requires -f /etc/yum.repos.d/epel.repo config(epel-release) = 7-11 redhat-release >= 7 rpmlib(CompressedFileNames) <= 3.0.4-1 rpmlib(FileDigests) <= 4.6.0-1 rpmlib(PayloadFilesHavePrefix) <= 4.0-1… Read More »

Converting Virtual Machine Images

Converting from QCOW2 to RAW qemu-img convert -p windows7.qcow2 -O raw windows7.raw qemu-img convert -p windows7.qcow2 -O raw /dev/mapper/3600144f00000000000005367385c0004 Converting from RAW to iSCSI device ddrescue -v -d -f windows7.raw /dev/mapper/3600144f00000000000005367385c0004 windows7.log Converting from VMware Running kvm with vmdk disks Apparently it is possible to run vmdk disk images directly in KVM. So far I… Read More »