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  • Docker fun

    calendar Jul 21, 2018 · 1 min read · DOCKER  ·
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    1root@m2-kolla-deploy:~# curl -X GET https://localhost/v2/_catalog?n=2000 -k …


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  • Linux static routes & fixing 'Error either to is duplicate, or gw is a garbage'

    calendar Jun 25, 2018 · 2 min read · LINUX ROUTING TROUBLESHOOTING  ·
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    While working with Linux routing, it's not uncommon to encounter errors when adding static routes. A typical issue is the error message: "Error: either 'to' is duplicate, or 'gateway IP' is a garbage." This post details my experience with this error and how I resolved it. Encounter with the Error In my …


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  • Dell MD3060 JBOD

    calendar May 11, 2018 · 6 min read · DELLMD3060JBOD UBUNTU  ·
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    Here is what it looks like to have a Dell MD3060 JBOD Chassis attached to a an Ubuntu box 1root@sata01:~# lsscsi 2[0:0:0:0] cd/dvd PLDS DVD+-RW DS-8A3S HD51 /dev/sr0 3[2:2:0:0] disk DELL PERC H700 2.10 /dev/sda 4[3:0:0:0] disk iDRAC LCDRIVE 0323 /dev/sdaf 5[4:0:0:0] cd/dvd iDRAC Virtual CD 0323 /dev/sr1 6[4:0:0:1] disk …


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  • LibreNMS - Ignore junk ports

    calendar May 10, 2018 · 1 min read · LIBRENMS  ·
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    I'm sick of seeing alerts in LibreNMS about ports on my virtual hosts I don't care about. So I'll set them all to ignore I'll also update the rule to prevent the alerts coming trough if a new tap port gets created 1update librenms.ports set ports.ignore='1' where ports.ifName like 'tap%' or ports.ifName …


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  • OpenVSwitch - Remove a port from a bond

    calendar May 6, 2018 · 1 min read · OPENVSWITCH  ·
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    Short answer: There is no dedicated command for that but it can done. Long answer: ovs-vsctl --id=@eth0 get Interface eth0 -- remove Port bond0 interfaces @eth0 https://mail.openvswitch.org/pipermail/ovs-discuss/2015-May/037372.html


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  • Linux speedtest

    calendar May 6, 2018 · 1 min read · LINUX SPEEDTEST  ·
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    1curl -s https://raw.githubusercontent.com/CoryHawkless/speedtest-cli/master/speedtest.py | python3 https://github.com/sivel/speedtest-cli/ https://askubuntu.com/questions/104755/how-to-check-internet-speed-via-terminal#269821


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  • Kolla commands

    calendar May 2, 2018 · 1 min read · KOLLA  ·
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    Build just one container and send it to a private registry 1kolla-build -b ubuntu kolla-toolbox --registry localhost:443 --push Build one thing and publish it to a custom namespace 1sudo kolla-build horizon -b ubuntu --push --registry m2-kolla-deploy:443 -n cory Push a single 'project' out - Unconfirmed 1kolla-ansible …


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  • Openstack Queens - Nova: Error creating new key pair

    calendar May 2, 2018 · 3 min read · OPENSTACK-QUEENS NOVA KEYGEN  ·
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    In a fresh install of Openstack Queens I was having an issue generating new key pairs after a reboot f the Nova node. The following error was logged in nova-api.log A simple restart of the nova-api service resolved this issue for me 12018-05-02 13:25:41.101 1351 ERROR nova.api.openstack.wsgi …


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  • Openstack - Layer2 Gateway(VXLAN -> Real world bridge)

    calendar Apr 29, 2018 · 4 min read · OPENSTACK VXLAN  ·
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    This article is the culmination of 100's of hours of work, I hope it can save others some time. Here are some super useful articles that got me across the line: https://networkop.co.uk/blog/2016/05/21/neutron-l2gw https://wiki.openstack.org/wiki/Ovs-flow-logic …


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  • HPACUCLI - Mapping a disk to a linux mount point /dev/sdx

    calendar Apr 28, 2018 · 1 min read · HPACUCLI DISK-MGMT LINUX  ·
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    Found this little nugget by accident but here is the command to use hpacucli on linux to determine which logical disk is mapped to which mount point 1[root@ceph1 ~]# /usr/sbin/uname26 hpacucli controller slot=2 ld 3 show 1Smart Array P410 in Slot 2 2 3array C 4 5Logical Drive: 3 6 Size: 3.6 TB 7 Fault Tolerance: 0 8 …


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Cory Hawkvelt photo

Cory Hawkvelt

CTO @ Nexgen Cloud | Career Nerd and Open Source Cloud Architect
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Recent Posts

  • Converting Cisco AirAP3802i to Mobility Express Mode
  • Mastering SSH Certificates: A Comprehensive Guide
  • My First Dabbling with LoRa
  • Deploying pam_ussh: A Comprehensive Guide
  • Validating SSH Certificates with a Local CA Using Python
  • Unpacking the NVIDIA H100 Tensor Core GPU: A Deep Dive for CTOs
  • Caddy proxy for OpenStack API's
  • HP Server ACPI errors

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