Containerized. If set to true, containerized OpenShift Origin services are run on all target master and node hosts in the cluster instead of installed using RPM packages.Advanced Installation - Installing a Cluster . The inventory file describes the configuration. Open. Shift Origin cluster. You must replace the default contents of the. Thank you for taking the time to read about SCons. SCons is a next-generation software construction tool, or make tool--that is, a software utility for building. ![]() The following sections describe commonly- used variables to set in your inventory. Many of the Ansible variables described are optional. Accepting the default. The example inventories describe various environment topographies, including. ![]() You can. choose an example that matches your requirements, modify it to match your own. Image Version Policy. Images require a version number policy in order to maintain updates. See. Version Tag Policy section in the Architecture Guide for more information. Configuring Cluster Variables. To assign environment variables during the Ansible install that apply more. Open. Shift Origin cluster overall, indicate the desired variables in. For example. Cluster Variables. Variable. Purposeansible. This user should allow SSH- based authentication. If. using SSH key- based authentication, then the key should be managed by an SSH. Set one of the following: 0 to log errors and warnings only. This is the default level.)4 to log debugging- level information. API- level debugging information (request / response)8 to log body- level API debugging information. For more information on debug log levels, see Configuring Logging Levels. If set to true, containerized Open. Shift Origin services are run on all target master. RPM packages. If set to. RPM method is used. RHEL Atomic Host requires the. See. Containerized Hosts for more details. This variable defines the HA method when deploying multiple masters. See Multiple Masters for. It defaults to services, which allows rolling. It can instead be set to system, which. Set the variable to redhat/openshift- ovs- multitenant to. See Configuring Custom Certificates for more information. Defaults to 7. 30 (2 years). Defaults to 1. 82. Defaults to 7. 30 (2 years). Defaults to 7. 30 (2 years). Controls. validity for etcd CA, peer, server and client certificates. Defaults to 1. 82. Not available on RHEL Atomic Host. See the Configuring the Firewall section for more information. See Configuring Session Options for more information. This network block should be private and must not conflict with any. Defaults to. 1. 72. If changing from the default, avoid 1. See Image Configuration for details. This is the network from which pod IPs are. This network block should be a private block and must not conflict. Defaults to 1. 0. Defaults to 9 which means that a subnet of size /2. This cannot be. re- configured after deployment. If enabling flannel, disable the default SDN with the. For more information, see Using Flannel. For example. Host Variables. Variable. Purposeopenshift. Use this. when the system’s default IP address does not resolve to the system host name. Use this for cloud. NAT). openshift. Use. Use this for cloud. NAT). containerized. If set to true, containerized Open. Shift Origin services are run on the target master and. RPM packages. If set to false or unset. RPM method is used. RHEL Atomic Host requires the containerized. See. Installing on Containerized Hosts for more details. See. Configuring Node Host Labels for more. These values override other settings in node configuration. Example usage. Configuring Node Host Labels for details. See. Configuring Node Host Labels for details. Example usage: . Do not use when. See. Configuring Schedulability on Masters. Configuring Cluster Pre- install Checks. Pre- install checks are a set of diagnostic tasks that run as part of the. They run prior to an Ansible. Open. Shift Origin, ensure that required inventory values are set. The following table describes available pre- install checks that will run before. Ansible installation of Open. Shift Origin: Table 3. Pre- install Checks. Check Name. Purposememory. Default values have been derived from. A user- defined value for minimum memory. It ensures that the mount. Open. Shift Origin installation has sufficient disk space remaining. A user- defined value for minimum disk space. Checks that docker's total usage does not exceed a. If no user- defined limit is set, docker's maximum usage. The threshold limit for. A user- defined limit for maximum thinpool. If the. storage driver is being used, the check additionally ensures that a loopback. Having multiple releases of a package. Open. Shift suggests that there. This check is skipped if the openshift. Ensures that. RPM packages required for the current installation are available. For example: openshift. Another set of checks for checking certificate. Redeploying Certificates. Configuring System Containers. All system container components are. Tech Preview features in Open. Shift Origin 1. 6. They are Docker- formatted containers that use: System containers are therefore stored and run outside of the traditional. For more details on system container technology, see. Running System Containers in the Red Hat Enterprise Linux Atomic Host: Managing Containers documentation. You can configure your Open. Shift Origin installation to run certain components as. RPM or standard containerized methods. For example, different system containers are. RHEL, Fedora, or Cent. OS. Ensure that the system containers you are. OS of the host they will run on. Running Docker as a System Container. All system container components are. Tech Preview features in Open. Shift Origin 1. 6. For Red Hat Enterprise Linux (RHEL) systems, it must be. RHEL Atomic Host systems, it is provided by default. However, you can configure your Open. Shift Origin installation to alternatively. When using the system. To run docker as a system container: Because the default storage back end for Docker on RHEL 7 is a thin pool on. RHEL systems you must still configure a thin pool. Open. Shift Origin. You can skip these steps for any RHEL Atomic Host systems. For any RHEL systems, perform the steps described in the following sections: After completing the storage configuration steps, you can leave the RPM. Set the following cluster variable to True in your inventory file in the. To do so, set the. When using the containerized. RHEL or RHEL. Atomic Hosts. However, you can configure your Open. Shift Origin installation to alternatively. Whereas the standard containerized method uses. The data directory for etcd. To run etcd as a system container, set the following cluster variable in your. Registry Variables. Variable. Purposeoreg. Necessary if you are not using the default registry at registry. Modifies the image stream location to the value of oreg. Node services only connect to the. API requiring no external access and therefore do not need to be. In order to simplify this configuration, the following Ansible variables can be. Table 5. Cluster Proxy Variables. Variable. Purposeopenshift. This value should be set to a comma separated list of. This. list will be augmented with the list of all defined Open. Shift Origin host names. Defaults to true; set it to false to override this. If. openshift. However, iptables rules can break Open. Shift Origin if. not configured correctly. The advantages of firewalld include allowing multiple. To use firewalld as the firewall for an Open. Shift Origin installation, add the. You must do so by adding entries for these hosts to the . This is the same as setting the. Labels are useful for determining the placement of pods onto nodes using. In the following example, labels are. They are set to region=infra by default: # default selectors for router and registry services. For example. Ensure that at least one node host in your Open. Shift Origin. environment has the region=infra label. It is recommended for production environments that you maintain dedicated. As described in Configuring. Schedulability on Masters, master hosts are marked unschedulable by default. If. you label a master host with region=infra and have no other dedicated. Otherwise, the registry and router pods cannot be placed anywhere. By. default, Ansible populates a session. Secrets. File with generated. The default location is. You can set the session name and maximum number of seconds with. Using a custom serving certificate. URL. (openshift. Certificates. The validity (length in days until they expire) for the. CA, node, and master certificates can be configured. Set the. following to enable cluster metrics when using the advanced install. The metrics public URL can be set during cluster. If. openshift. For example, the volume path using these options would. Set the. following to enable cluster logging when using the advanced installation method. If openshift. For example, the volume path using these options would be. See. Customizing the Web Console for more details on these customization options. Table 6. Web Console Customization Variables. Variable. Purposeopenshift. See Changing the Logout URL for details. Example value: http: //example. See Loading Extension Scripts and Stylesheets for details. Example value: . See Loading Extension Scripts and Stylesheets for details. Example value: . See Serving Static Files and Customizing the About Page for details. Example value: . See Customizing the Login Page for details. Example value: . See Setting the Metrics Public URL for details. Example value: https: //hawkular- metrics. See Kibana for details. Example value: https: //kibana.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
August 2017
Categories |