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Koen van der Rijt's questions

Martin Hope
Koen van der Rijt
Asked: 2020-11-06 00:16:58 +0800 CST
  • 1

For testing purposes I want to build a MySQL container that has a dataset bootstrapped into it. I know that mounting is possible and that you can place sql scripts into the init directory to run the import at start, but thats not what we want. So I tried to build one myself that just copies the datafiles into the docker container.

I use the following dockerfile to build my container.

FROM mysql:8.0.21
EXPOSE 3306

ARG BUILD_ID
LABEL stage=builder
LABEL build=$BUILD_ID
ENV TZ=Europe/Amsterdam

RUN apt-get update && apt-get install -y tzdata
ADD http://server.example.com/data/datafiles_2020_11_02.tar.gz /var/lib/datafile.tar.gz
RUN tar -xvzf /var/lib/datafile.tar.gz -C /var/lib/mysql && chown -R mysql.root /var/lib/mysql
#ADD initieel/* /docker-entrypoint-initdb.d/
ADD cnf/* /etc/mysql/mysql.conf.d/

This runs succesfully so afterwards I spin up my freshly build container and during the startup something in the container will just initialize a fresh database and throw everything that I placed into /var/lib/mysql away. I checked the README that comes with the mysql container but there is nothing I can find that relates to this.

thanks in advance for taking the time to read. I will update if my post is lacking any information.

mysql docker containers
Martin Hope
Koen van der Rijt
Asked: 2014-06-07 04:09:29 +0800 CST
  • 2

Is there a way to make yum update to a certain patchlevel?

I always promise my devs the servers between Dev, Test, Acc and Prod are the same with versions of software. But when u use yum via the redhat network it will just update to the latest versions regardless.

the problem arrives when u roll out to a server beyond dev or Test. You can of course exclude important packages from this update process. But al kinds of other packages will still update to a newer version if there is a new version available since u updated last. This way your servers wont exactly be the same.

Is there a way (via yum) to be certain you will get the exact same package configuration as the other servers in your DTAP street.

centos
Martin Hope
Koen van der Rijt
Asked: 2013-12-31 03:05:36 +0800 CST
  • 2

Im at the start of learning puppet. So far I successfully setup my master with dashboard and a couple of agents. But on one of my testing nodes I made a mistake when adding the node. I added it twice with 2 different certificates.

the first certificate is just the hostname and the other one is the FQDN. I cant seem to remove either of them properly. I used the puppet syntax for revoking the certificate. But when the next puppet run comes it adds itself to the dashboard again and gives me all kinda of errors cos its not allowed to do stuff. Im not sure if this is due to a lingering config on the master or a configuration on the agent.

how can I get a clean slate for an agent node?

linux
Martin Hope
Koen van der Rijt
Asked: 2013-11-29 02:34:44 +0800 CST
  • 0

Im tinkering with my iptables logging at the moment. So I got my syslog to use another log file with tips from the web. basically you end up changing some chains and rules plus aan extra line in the /etc/syslog.conf

kern.warning /var/log/iptables.log

But I get a strange feeling with this. I know why you need to do it like this because iptables is a kernel thing. BUT I cant shake the feeling that something else that produces a kernel warning is also gonna log to this file? I cant really find a clear explanation about this. It just doesnt feel clean.. mayb its just my adminautism kickin in

thanks in advance Koen

linux