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    WalterS-NC

    Question for Mr. Daniel Lowrie,

    I am very thankful for him putting together this series. For cases where client keys are generated for each user, and a user leaves the organization, how are they keys they may still have be revoked on the server side?

    -Walter Schulze

    posted in General Discussion read more
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    WalterS-NC

    btw, I have been fighting for the past few days with the /etc/sysconfig/docker OPTIONS directive.

    Anytime I add the -H tcp://0.0.0.0:2375 and start docker, there are the below msgs in journalctl and when I try to run a docker command, I get the response "cannot connect to the Docker daemon. Is the docker daemon running on this host?".

    Shutting down firewalld doesn't solve the problem.

    I also tried adding the below two commands with firewalld running and it too did not solve the problem.
    sudo firewall-cmd --zone=public --add-port=2375/tcp
    sudo firewall-cmd --zone-public --add-port=2375/tcp --permanent

    Any help would be appreciated. I have docker on a RHEL 7.4 host. Google searches have been inconclusive so far.

    MSGS::
    Sep 17 16:07:00 qemu-kvm.clt01 firewalld[5293]: WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w2 -t nat -D OUTPUT -m addrt
    Sep 17 16:07:00 qemu-kvm.clt01 firewalld[5293]: WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w2 -t nat -D PREROUTING' fai
    Sep 17 16:07:00 qemu-kvm.clt01 firewalld[5293]: WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w2 -t nat -D OUTPUT' failed:
    Sep 17 16:07:00 qemu-kvm.clt01 firewalld[5293]: WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w2 -t filter -X DOCKER' fail
    Sep 17 16:07:00 qemu-kvm.clt01 firewalld[5293]: WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w2 -t filter -X DOCKER-ISOLA
    Sep 17 16:07:01 qemu-kvm.clt01 firewalld[5293]: WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w2 -t nat -n -L DOCKER' fail
    Sep 17 16:07:01 qemu-kvm.clt01 firewalld[5293]: WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w2 -t filter -C DOCKER-ISOLA
    Sep 17 16:07:01 qemu-kvm.clt01 firewalld[5293]: WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w2 -t nat -C DOCKER -i docke
    Sep 17 16:07:01 qemu-kvm.clt01 firewalld[5293]: WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w2 -D FORWARD -i docker0 -o
    Sep 17 16:07:01 qemu-kvm.clt01 firewalld[5293]: WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w2 -t nat -C PREROUTING -m a
    Sep 17 16:07:01 qemu-kvm.clt01 firewalld[5293]: WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w2 -t nat -C OUTPUT -m addrt
    Sep 17 16:07:01 qemu-kvm.clt01 dockerd-current[13353]: time="2017-09-17T16:07:01.297529385Z" level=info msg="Default bridg
    Sep 17 16:07:01 qemu-kvm.clt01 firewalld[5293]: WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w2 -t nat -C POSTROUTING -s
    Sep 17 16:07:01 qemu-kvm.clt01 firewalld[5293]: WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w2 -t nat -C DOCKER -i docke
    Sep 17 16:07:01 qemu-kvm.clt01 firewalld[5293]: WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w2 -D FORWARD -i docker0 -o
    Sep 17 16:07:01 qemu-kvm.clt01 firewalld[5293]: WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w2 -t filter -C FORWARD -i d
    Sep 17 16:07:01 qemu-kvm.clt01 firewalld[5293]: WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w2 -t filter -C FORWARD -i d
    Sep 17 16:07:01 qemu-kvm.clt01 firewalld[5293]: WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w2 -t filter -C FORWARD -o d
    Sep 17 16:07:01 qemu-kvm.clt01 firewalld[5293]: WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w2 -t filter -C FORWARD -o d

    posted in General Discussion read more
  • W
    WalterS-NC

    sure enough. Must of been added after. I'm off to watch them both. Thanks!

    posted in General Discussion read more
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    WalterS-NC

    Hello,

    The series ends with Linux as a Docker Host and there is mention that there will be a subsequent episode with a walk through on how to spin up docker containers. I do not see anything on the Google Calendar for this subsequent episode to be recorded and wanted to ask if it is still scheduled to be added.

    BTW, I like this content very much and have been taking notes for my own edification and enjoying doing so.

    Thanks.

    -Walter Schulze

    posted in General Discussion read more
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    WalterS-NC

    @Ronnie-Wong Can't wait. Soooooooo much to watch while it is put in so I am going to be busy until. Thanks again!

    posted in General Discussion read more
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    WalterS-NC

    just finished binge watching this new course, the third in the series. So much good content. I got so much valuable information. Thank you ITPro.TV for producing!

    posted in General Discussion read more
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    WalterS-NC

    question. what are the pros/cons to using systemctl vs. the scripts in /etc/init.d/ ?

    Thank you. I love this course and the previous one "Becoming a Linux Power User". Great stuff!

    posted in General Discussion read more