The Embedded Ansible role enables the use of the built-in "Ansible Inside" automation manager, which allows Ansible playbooks to be run from service catalogs, from control actions and alerts, or as Automate methods. If more than one CFME appliance in a region has this role enabled, only one will be active at a time. This role has a dedicated worker called the EmbeddedAnsibleWorker, but enabling the role also starts the following event catcher and refresh workers:
The PostgreSQL configuration file on a newly installed CFME 5.9 appliance is /var/opt/rh/rh-postgresql95/lib/pgsql/data/postgresql.conf. This file contains no CloudForms-specific settings, however it makes reference to a CloudForms/ManageIQ-specific include directory with the line:
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All CloudForms/ManageIQ-specific customisations are read from files in the directory. The file /etc/manageiq/postgresql.conf.d/01_miq_overrides.conf contains the default CloudForms-specific PostgreSQL settings, however as this file is potentially overwritten on a yum update, any user-custom settings should be added to a new file in the include directory such as /etc/manageiq/postgresql.conf.d/02_user_overrides.conf.
CFME appliances upgraded from a version prior to 5.9 will retain all PostgreSQL configuration in the main /var/opt/rh/rh-postgresql95/lib/pgsql/data/postgresql.conf file as before. This will not make reference to the include directory, and any of the parameters changes described below should be made to this file.
By default the block device used for the database partition is used for the PGDATA directories and files, and also the postgresql.log log file (this is the text log file, not the database write-ahead log). Moving the log file to a separate partition allows the PGDATA block device to be used exclusively for database I/O, which can improve performance. The default value for log_directory in the configuration file is as follows:
This value creates the log file as /var/opt/rh/rh-postgresql95/lib/pgsql/data/pg_log/postgresql.log. The following commands can be used to setup an alternative directory for the log file such as /var/log/pg_log.
The database mount point /var/opt/rh/rh-postgresql95/lib/pgsql is a logical volume formatted as XFS. A new disk can be presented to the database appliance and added to LVM to allow the filesystem to grow.
Because Nix (the package manager) & Nixpkgs (the Nix packages collection) can both be installed on any (most?) Linux distributions, they can be used to install NixOS in various creative ways. You can, for instance:
Note that alice is a member of the wheel and networkmanager groups, which allows her to use sudo to execute commands as root and to configure the network, respectively. Also note the SSH public key that allows remote logins with the corresponding private key. Users created in this way do not have a password by default, so they cannot log in via mechanisms that require a password. However, you can use the passwd program to set a password, which is retained across invocations of nixos-rebuild.
While X11 (see Chapter 10, X Window System) is still the primary display technology on NixOS, Wayland support is steadily improving. Where X11 separates the X Server and the window manager, on Wayland those are combined: a Wayland Compositor is like an X11 window manager, but also embeds the Wayland 'Server' functionality. This means it is sufficient to install a Wayland Compositor such as sway without separately enabling a Wayland server:
Thunar (the Xfce file manager) is automatically enabled when Xfce is enabled. To enable Thunar without enabling Xfce, use the configuration option programs.thunar.enable instead of simply adding pkgs.xfce.thunar to environment.systemPackages.
but please be aware using Pantheon without LightDM as a display manager will break screenlocking from the UI. The NixOS module for Pantheon installs all of Pantheon's default applications. If you'd like to not install Pantheon's apps, set
activate is used to skip the email verification of the admin-user that's automatically created by plausible. This is only supported if postgresql is configured by the module. This is done by default, but can be turned off with services.plausible.database.postgres.setup.
Sourcehut is a Python and Go based set of applications. This NixOS module also provides basic configuration integrating Sourcehut into locally running services.nginx, services.redis.servers.sourcehut, services.postfix and services.postgresql services.
After this has been done and appropriate DNS records have been set up, the Postorius mailing list manager and the Hyperkitty archive browser will be available at Note that this setup is not sufficient to deliver emails to most email providers nor to avoid spam -- a number of additional measures for authenticating incoming and outgoing mails, such as SPF, DMARC and DKIM are necessary, but outside the scope of the Mailman module.
Note that you are required to specify the desired version of PostgreSQL (e.g. pkgs.postgresql_11). Since upgrading your PostgreSQL version requires a database dump and reload (see below), NixOS cannot provide a default value for services.postgresql.package such as the most recent release of PostgreSQL.
Major PostgreSQL upgrades require a downtime and a few imperative steps to be called. This is the case because each major version has some internal changes in the databases' state during major releases. Because of that, NixOS places the state into /var/lib/postgresql/ where each version can be obtained like this:
Run upgrade-pg-cluster. It will stop old postgresql, initialize a new one and migrate the old one to the new one. You may supply arguments like --jobs 4 and --link to speedup migration process. See for details.
Change postgresql package in NixOS configuration to the one you were upgrading to via services.postgresql.package. Rebuild NixOS. This should start new postgres using upgraded data directory and all services you stopped during the upgrade.
As an example, we will take the case of display managers. There is a central display manager module for generic display manager options and a module file per display manager backend (sddm, gdm ...).
As a result, displayManager.enable option values can be added without changing the main service module file and the type system automatically enforces that there can only be a single display manager enabled.
This example will replace the existing postgresql module with the version defined in the nixos-unstable channel while keeping the rest of the modules and packages from the original nixos channel. This only overrides the module definition, this won't use postgresql from nixos-unstable unless explicitly configured to do so.
The Prometheus plugin is now enhanced to support collecting metrics from Kubernetes endpoints such as the control plane components. The key to providing a scalable, fault-tolerant, highly available Kubernetes service are the control plane components of Kubernetes such as the scheduler, etcd, api-server, and control-manager. In order to maintain a healthy Kubernetes cluster, monitoring these components is crucial. These components can expose internal performance metrics using Prometheus format. The Prometheus plugin can scrape the metric endpoints exposed by these components directly, without the need to install Prometheus server to aggregate this data.
Kubernetes plugin can now collect metrics describing the state of namespaces, nodes, pods, and the workload resources such as deployments, daemon sets, replica sets, stateful sets, and jobs. We will continue to focus on the Kubernetes plugin in the next release to add more metrics describing the state of control plane objects such as API Server, control manager, and scheduler.
7. To change the upload time, in the web-based manager, select Change beside the upload time period, and then make the changes in the Upload Schedule window. Select OK.
When you subscribe to FortiCloud, you can configure to send logs to the FortiCloud server. The account activation can be done within the web-based manager, from the License Information widget located in System > Dashboard.
The customized display of log messages in the CLI is similar to how you customize the display of log messages in the web-based manager. For example, category 9 is the DLP log messages, and the start-line is the first line in the log database table for DLP log messages, and there will be 20 lines (view-lines 20) that will display.
1. Open the Reporting Services configuration manager Start ->All Programs->Microsoft SQL Server 2008 R2 ->Configuration Tools ->Reporting Services configuration manager.
5. Stop the SQL Server Reporting Services. In the SQL Server configuration manager Start ->All Programs->Microsoft SQL Server 2008 R2 ->Configuration Tools ->SQL Server Configuration Manager find SQL Server Reporting Services and click Stop.
Abstract: Rust is known as one of the most popular programming languages on the Stack Overflow website in 2020, indicating that many programmers have had the opportunity to use Rust in different projects. There are many reasons for this success, mostly due to its performance and safety. Rust is a friendly compiler with useful error messages, which provides excellent documentation with an integrated package manager. Furthermore, it is memory-efficient and fast without a garbage collector. Hence, the Rust compiler can power performance-critical services run on embedded devices. Likewise, due to Rusts rich type system and ownership model, it guarantees memory-safety and thread-safety enabling the end-users to reduce various bug types at compile-time. 2ff7e9595c
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