I have installed and configured ambari-server as root user and ambari agents as a non root user.
Also
SSH Passwordless authentication is setup and working fine.
ntp is installed and running
Hostname is updated in /etc/hostname /etc/hosts and
/etc/syscongig/network
Anaconda python 2.7.13 is installed as the python environment and
package manager
Restarted the service systemctl restart systemd.hostnamed as well
Add all the sudoer entries as per documentation
At the host configuration page. It is not able to register the hosts
Getting the information message as below and it eventually times out.
BSHostStatusCollector:55 - Request directory /var/run/ambari-server/bootstrap/6
Since I did a non root installation for ambari client. I had to chose the option manual registration instead of automated registration and after that it worked.
Related
I am trying to create localhost Apache Ambari cluster on CentOS7. I am using Ambari 2.2.2 binaries downloaded and installed from the Ambari repository with the following commands
cd /etc/yum.repos.d/
wget http://public-repo-1.hortonworks.com/ambari/centos7/2.x/updates/2.2.2.0/ambari.repo
yum install ambari-server
ambari-server setup
ambari-server start
Before starting the server I have done all the necessary preparations steps described on the Hortonworks including the setup of passwordless ssh, which is frequent reason of problems according to the posts found on the internet. I verify it with
ssh root#localhost
During the creation of cluster in the "Install options" window I enter the name of the host I want to create (localhost in my case) and have already tried both of the options, which are
providing rsa secret key direktly - in this case the next window
simply stucks in the "Installing" stage and does not go any further,
showing no errors
performing manual registration of hosts.
For the second option I have downloaded and installed ambari-agent
yum install ambari-agent
ambari-agent start
In case of manual host registration I am getting the following error
"Host checks were skipped on 1 hosts that failed to register.".
When I click on "Failed", which in some cases described over the internet is supposed to deliver more precise description of a problem I see the following
"Registering with the server...
Registration with the server failed."
As a result I don't even now where to start searching for the possible reasons of this error.
Ambari cluster nodes need to be configured with a Fully Qualified Domain Name (FQDN). localhost is not an FQDN. You will need to configure the node with an FQDN and then retry the installation. You could use something like: localhost.local which is an FQDN. This requirement and how to configure the node to meet it are documented in the pre-requirements. From the HDP documentation:
All hosts in your system must be configured for both forward and and reverse DNS.
If you are unable to configure DNS in this way, you should edit the /etc/hosts file on every host in your cluster to contain the IP address and Fully Qualified Domain Name of each of your hosts.
I had the same "Registering with the server... Registration with the server failed." problem just recently.
I found the response on the same topic recommending to take a look at the log file which is located here /var/log/ambari-agent/ambari-agent.log from there was able to check that the hostname was set up incorrectly during some other phase of installation (I had it something like ambari.hadoop instead of localhost). So I went to the /etc/ambari-agent/conf/ambari-agent.ini and fixed it there.
I know that I'm digging some quite old question, but seems that compiling all that at one place might help someone with the same problem.
I have a problem with my registry docker. My "server" VM is on kali-linux. I created the registry docker in HTTP and use a centOS VM as a client. I declared the registry insecure in the client VM and it worked perfectly.
Now I try to put it in HTTPS. In order to do that, I use nginx as a proxy. I followed this tutorial : Step 5 — Setting Up SSL except for Part 8 to make it a service (I don't know why but i can't do it).
Because I don't have a domain name, I used a fake one. In order to be recognized, I added my IP (192.168.X.X) and the domain name I used (myregistryexemple) to the /etc/hosts file on both VM.
As asked by the tutorial, I generated the certificat on my "server" VM (the kali one), and send it by scp to my client VM. I make the centOS vm trust the certificate thanks to this commands :
yum install ca-certificates
update-ca-trust force-enable
cp cert.crt /etc/pki/ca-trust/source/anchors/
update-ca-trust extract
I restart the service docker on the client VM. And launch the docker registry and the nginx proxy with "docker-compose up" on my kali VM.
I tag and try to push an ubuntu on the registry :
docker tag ubuntu myregistryexemple/ubuntu
docker push myregistryexemple/ubuntu
But I get this error :
The push refers to a repository [docker.io/myregistryexemple/ubuntu]
56827159aa8b: Preparing
440e02c3dcde: Preparing
29660d0e5bb2: Preparing
85782553e37a: Preparing
745f5be9952c: Preparing
denied: requested access to the resource is denied
Then I try to push to localhost directly :
docker tag ubuntu localhost:5000/ubuntu & docker push localhost:5000/ubuntu
then I docker login on the domain from the client VM, it worked, but when i tried to pull from my domain registry on the client VM, docker cannot find on the registry the docker images i tried to push.
Do someone has any idea why and knows how to help me ?
Ok so i found a way to make it work.
It is quite simple : Juste follow the complete tutorial I quote on the question ( https://www.digitalocean.com/community/tutorials/how-to-set-up-a-private-docker-registry-on-ubuntu-14-04#step-5-%E2%80%94-setting-up-ssl )
After you created the repository, and before you push/pull a docker image.
You need to go, in both client and server VM, on /etc/hosts .
Add the line : domainChosen serverVmIp
Save and quit it.
Now we need the client to trust the certificate generated. In order to do that, you can use this tutorial : http://kb.kerio.com/product/kerio-connect/server-configuration/ssl-certificates/adding-trusted-root-certificates-to-the-server-1605.html .
Then restart your registry and your docker deamon. And you normaly can use your domain name to push/pull in your registry in https.
I'm using Ansible to spin up a new Amazon EC2 install, and then I install Java and Tomcat (via the yum module). After placing the war for sample project from the Apache website in the webapps directory, I go and run the the command (below), nothing happens. It returns with response, no error. I've checked both the IP and port 8080 and Tomcat is not running.
[centos#sonar-test webapps]$ sudo systemctl start tomcat
[centos#sonar-test webapps]$ sudo systemctl start tomcat
[centos#sonar-test webapps]$
For reference, I was following this tutorial as well:
https://www.digitalocean.com/community/tutorials/how-to-install-apache-tomcat-7-on-centos-7-via-yum
From your comment on my question running curl in your ec2 instance
When I curl I get a large html document with various apache-esque things on it
It means Tomcat is installed and running.
If you don't access it, its because of your security group rules
In your ec2 console, select the Security Groups option. Edit the rules that is associated with your ec2 instance (the one running Tomcat) and permits inbound connections to port 8080 (so you can make request to your Tomcat server) and port 80 if you're running Apache (or nginx/another web server). If you're not sure about security, you can restrict the inbound traffic to come only from your IP so you can test but no-one else can make request.
I use Debian 8.0 running an Apache v.2.4.10 and I try to add the OpenID Connect module named libapach2-mod-auth-openidc version 1.6.0.
After installing the module, I enable it with the command: sudo a2enmod auth_openidc. This works fine and now I want to restart the Apache server with sudo service apache2 restart, which leads me to an error
"Job for apache2 failed. See 'systemctl status apache2.service' and 'journalctl -xn' for details."
The result of
systemctl status apache2.service
shows an error while starting the server, but no detailed information of the error (code=exited, status=1/FAILURE).
And the result of
journalctl -xn
tells, that there are no journals.
So if I am disabling the auth_openidc module, the Apache server starts again without problems.
Details of the Configuration:
Apache runs with its default settings. I did not change anything!
auth_openidc module was not changed by me neither at this time!
Can someone explain why Apache with the enabled auth_openidc module would not start anymore?
After installing libapache2-mod-auth-openidc you will have to configure some settings before the module can be used successfully. Two of the mandatory settings are OIDCRedirectURI and OIDCCryptoPassphrase. Most probably you'll also have to configure client credentials for your OpenID Connect provider. You can take a look at the sample configurations at: https://github.com/pingidentity/mod_auth_openidc#openid-connect-sso-with-google-sign-in
Errors/warnings about the missing configuration directives should be displayed in: /var/log/apache2/error.log
While we're at it, I would also advise you to use the latest version 1.8.1 from https://github.com/pingidentity/mod_auth_openidc/releases
all. I am trying to install openshift with one command
[root#demo ~]# sh <(curl -s https://install.openshift.com/)
Checking for necessary tools...
...looks good.
Downloading oo-install package...
Extracting oo-install to temporary directory...
Starting oo-install...
OpenShift Installer (Build 20140722-1618)
.....
....
....
Deploying workflow 'origin_deploy'.
The OpenShift deployment configuration has the following errors:
* The implied host domain 'com' does not match the specified host domain of 'demo.com' for DNS
Rerun the installer to correct these errors.
I don't know what is the reason it keeps telling me that 'the implied host domain 'com' ...' what need to be changed?
[root#demo ~]# sh <(curl -s https://install.openshift.com/)
Checking for necessary tools...
...looks good.
Downloading oo-install package...
Extracting oo-install to temporary directory...
Starting oo-install...
OpenShift Installer (Build 20140722-1618)
Welcome to OpenShift.
This installer will guide you through a basic system deployment, based
on one of the scenarios below.
Select from the following installation scenarios.
You can also type '?' for Help or 'q' to Quit:
Install OpenShift Origin
Add a Node to an OpenShift Origin deployment
Generate a Puppet Configuration File
Type a selection and press : 1
Your system deployment configuration is incomplete.
The installer will guide you through the necessary configuration
steps.
Note: ActiveMQ and MongoDB will be installed on all Broker instances.
For more flexibility, rerun the installer in advanced mode (-a).
DNS Settings
Installer will deploy DNS
Application Domain: example.com
Register OpenShift hosts with DNS? Yes
Component Domain: demo.com
Global Gear Settings
Account Settings
![enter image description here][2]
Node Districts
Role Assignments
Host Information
The configuration file does not include some of the required settings
for host instance demo.com. Please provide them here.
Hostname (the FQDN that other OpenShift hosts will use to connect to
the host that you are describing): |demo.com|
Hostname / IP address for SSH access to demo.com from the host where
you are running oo-install. You can say 'localhost' if you are running
oo-install from the system that you are describing: |demo.com| 10.1.14.145
Username for SSH access to 10.1.14.145: |root|
Validating root#10.1.14.145... looks good.
Detected multiple network interfaces for this host:
* 192.168.142.128 on interface eth2
* 10.1.14.145 on interface eth3
Do you want to use one of these as the public IP information for this
Node? (y/n/q/?) y
The following network interfaces were found on this host. Choose the
one that it uses for communication on the local subnet:
1. 192.168.142.128 on interface eth2
2. 10.1.14.145 on interface eth3
Type a selection and press : 2
Normally, the BIND DNS server that is installed on this host will be
reachable from other OpenShift components using the host's configured
IP address (10.1.14.145).
If that will work in your deployment, press to accept the
default value. Otherwise, provide an alternate IP address that will
enable other OpenShift components to reach the BIND DNS service on
this host: |10.1.14.145|
This Node host is currently associated with the Default district. Do
you want to change this district assignment? (y/n/q) n
Do you want to modify the account info settings for the various role
services? (y/n/q/?) n
Here are the details of your current deployment.
Note: ActiveMQ and MongoDB will be installed on all Broker instances.
For more flexibility, rerun the installer in advanced mode (-a).
DNS Settings
Installer will deploy DNS
Application Domain: example.com
Register OpenShift hosts with DNS? Yes
Component Domain: demo.com
Choose from the following deployment configuration options:
1. Change the DNS configuration
2. Manage Hosts
3. Services Accounts Settings
4. Global Gear Settings
5. Node Districts
6. Display full Host details
7. Finish editing the deployment configuration
Type a selection and press : 7
Here is the subscription configuration that the installer will use for
this deployment.
Do you want to make any changes to the subscription info in the
configuration file? (y/n/q/?) n
Do you want to set any temporary subscription settings for this
installation only? (y/n/q/?) n
Preflight check: verifying system and resource availability.
Checking demo.com:
* SSH connection succeeded
* Target host is running CentOS
* Located getenforce
* SELinux is running in enforcing mode
* Located yum
* puppet RPM is installed.
* openssh-clients RPM is installed.
* bind RPM is installed.
Deploying workflow 'origin_deploy'.
The OpenShift deployment configuration has the following errors:
* The implied host domain 'com' does not match the specified host domain of 'demo.com' for DNS
Rerun the installer to correct these errors.
The issue is that OpenShift requires hosts to be part of a second-level domain. myhost.openshift.localdomain works, while myhost.localdomain does not.
I entered oshost.localdomain as component domain (configured right after the application domain) and 0.oshost.localdomain for the actual host and now it installs just fine.