Архів автора: reverse

Disable SMT from running Linux

Sometimes we need to stop SMT on CPU for unlock the max frequency For one core Globally

Mongo: Force move Secondary to Primary

If happen that your cluster is degraded, for example, two nodes dead in PSS configuration, and the last node is in status Secondary. Then we can force move this node to Primary Remove old nodes maybe change the priority on some members And force apply changes on Secondary

Kafka: deleting offset of a consumer group from a topic

After Kafka 2.8

Prevent storing huge transaction logs in Zookeeper

After some time of work Zookeeper writes a huge transaction log and adding any new event in the log makes fsync to FS very long Logs: To prevent size growth we can add two options to Zookeeper In config file: Or via Env variables when running in Docker This options will keep only last 7… Читати далі »

Git: warning: Not a git repository

When you try to update/pull or get a diff for the Git repository, you can get a warning: It is because the new version of Git forbidden to run git commands in a directory that is not owned by the current user ( CVE-2022-24765 ) To fix, you need to change permission for the directory… Читати далі »

Run CentOS 8 in rescue mode to change root password

In case you forgot the root password or can’t login to the CentOS, we can start OS by editing kernel boot options in Grub When the system is booting press any key (left, right, top, down) on Grub screen Select the kernel you need to run and press ‘e’ to open the editor

Debezium: getaddrinfo() thread failed to start

When building debezium-connect image on Gitlab runners had error After running all commands in Container found the problem Bug on Fedora issue tracker https://bugzilla.redhat.com/show_bug.cgi?id=2019901 Fix by running a container with security options or add config to Runner