I just tried to install Apache Zookeeper standalone in Ubuntu OS. I have installed Java environment and install Zookeeper 3.4.6.
However, when I typed JPS here are only I got.
following are the configuration for bashrc and zoo.cfg file:
[terminal~] vim .bashrc
[terminal~]vim /usr/local/zookeeper/conf/zoo.cfg
Please anyone help me. I wasted 2 days for only Zookeeper. It was really frustrated.
I have a fresh installed Ubuntu machine, and this is what I did to get ZooKeeper working as a standalone program (I assume you mean that you didn't install it with the package manager.)
Download ZooKeeper tar. (I used 3.4.8)
Extract the folder zookeeper-3.4.8 somewhere. (I placed it on my desktop for now)
Copy .../zookeeper-3.4.8/conf/zoo_sample.cfg to /zookeeper-3.4.8/conf/zoo.cfg
And change the dataDir=... line to whatever you want. (I made a data dir inside the zookeeper-3.4.8 folder)
Now you can run zookeeper by executing the script ../zookeeper-3.4.8/bin/zkServer.sh start
foo#bar:~$ /home/foo/Desktop/zookeeper-3.4.8/bin/zkServer.sh start
ZooKeeper JMX enabled by default
Using config: /home/foo/Desktop/zookeeper-3.4.8/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
foo#bar:~$ /home/foo/Desktop/zookeeper-3.4.8/bin/zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /home/foo/Desktop/zookeeper-3.4.8/bin/../conf/zoo.cfg
Mode: standalone
Related
The problem is my Windows 10 does not understand redis commands. I downlaoded and installed on D/Program Files/Redis my cli and server .msi files.
I run with command:
redis-server D:/Program Files/Redis/redis-slave.windows.conf
and expect to get an instance on redis slave with configuration provided in course in .conf file but ger error:
Invalid argument during startup: Failed to open the .conf file: Files/Redis/redis-slave.windows.conf CWD=D:\Program Files\Redis
and the problem is not in wrong configuration because I can copy default .conf redis file and it is the same
Another problem - but not so important as above to me -- but similar when I try to run a cluster Windows 10 does not know how to open this file. I run command:
D:\Program Files\Redis2\redis-7.0.4\utils\create-cluster>./create-cluster start
and receive windows where I need to choose a program to run this file but does not seen it in your MacOS case, anyway this create-cluster file does not have extension so I do not know what to do to make it run
I've got a Debian server running Redis and I'd like to run a second copy using a different port. There are plenty of guides explaining how to do it on Ubuntu and other flavours of Linux but I'm having a hard time translating those to Debian.
So far I've created a copy of the /etc/redis/redis.conf and have renamed it /etc/redis/redis_6380.conf. In the new file I've changed the name of the PID file, location of the log file, the listening port (to 3680) so that they do not conflict with the existing instance of Redis.
The problem I have is knowing which changes to make so that systemd can start the new instance.
I've made a duplicate of /lib/systemd/system/redis-server.service and called it redis-server-6380.service and have changed the EXECStart and PIDFile lines to point to the new files:
ExecStart=/usr/bin/redis-server /etc/redis/redis_6380.conf
PIDFile=/var/run/redis/redis-server_6380.pid
Doing:
systemctl enable redis-server-6380.service
results in:
Failed to enable unit: File /etc/systemd/system/redis.service already exists and is a symlink to /lib/systemd/system/redis-server.service
How do I fix this ? I'm guessing that I've missed out a vital step but I'm not that familiar with configuring systemd supervised processes on Debian.
The end of the redis-server unit file would say:
[Install]
WantedBy=multi-user.target
Alias=redis.service
Either remove that Alias, or make sure it would be unique.
Also: make sure your Redis instances would have their own database and log files.
I'm "extremely" new to Kubernetes, and I wanted to try it out on my local machine, which is running Windows 10 along with HyperV. I saw that minikube is used for local development, and I was able to find in on Chocolatey, so I installed it using that:
choco install minikube -y
(I think this also installs kubectl)
The problem I have is that I'm not able to start it; I'm running the following command:
minikube start --vm-driver=hyperv
I have an external switch configured in HyperV (I found it as a suggestion somewhere), but when I run the command, it's stuck in Creating VM ...
I thought maybe it would give me a clue if I look at the VM created in HyperV, and when I open that, I see the following:
So, it seems that it's waiting for input, and that's why it's stuck! I tried searching for the problem, but to no avail.
I would appreciate any help
PS: It seems to me that if I wait long enough, the following message appears on the console:
Temporary Error: provisioning: error getting ssh client: Error dialing
tcp via ssh client: ssh: handshake failed: ssh: unable to authenticate,
attempted methods [none publickey], no supported methods remain
So, somehow by chance, I think I found how to resolve the issue.
First thing is that: the fact the VM is displaying that prompt (minikube login) seems to be normal, and it does NOT prevent the minikube start from succeeding.
To resolve the issue, this is what I did:
Delete ~/.kube directory
Delete ~/.minikube directory (in case it exists)
The MOST IMPORTANT step: stop/start the Hyper-V Virtual Machine Management Windows service
These steps seem to have solved the issue for me
PS: I used this command to start minikube and enable verbose logging:
minikube start --vm-driver hyperv -v 7 --alsologtostderr
Farzad, what resources have you used for setting up the minikube? Can you please clarify what do you mean by "unable to start". Are the regular kubectl commands working?
For example kubectl get nodes? That is of course if below steps won't help you.
The screenshot you shared shows a running VM:
Minikube runs a single-node Kubernetes cluster inside a VM on your
laptop for users looking to try out Kubernetes or develop with it
day-to-day.
You mentioned that you've created the vSwitch, you should be using a flag that is pointing minikube to use that external vSwitch:
minikube start --vm-driver hyperv --hyperv-virtual-switch "vSwitch name"
You also mentioned choco, did you install kubernetes-cli (as you did not mention it in the question)? It might be the reason why your commands do not work (seems like the new version downloads kubectl with choco install minikube):
kubectl is a command line interface for running commands against
Kubernetes clusters
At this moment I recommend stoping the minikube VM:
minikub stop
Delete the cluster
minikube delete
Sometimes regular minikube stop, minikube delete does not work so you might have to manually turn off the minikubeVM in Hyper-V, then I recommend to go to c:\users\%username%\ and delete .kube and .minikube.
Use cuninst minikube
Restart and install again as specified in the minikube documentation:
choco install minikube
choco install kubernetes-cli
As for the error you mentioned, let's try to run the cluster properly, and if this persists, we will take care of it.
Try this:
kubectl config use-context minikube
I encountered the same issue. The reason was I chose the wrong disk file to start my VM after creating it in Virtual Box.
This solved my issue.
minikube delete
minikube start --vm-driver hyperv -v 7 --alsologtostderr
I'm currently setting up a Kaltura streaming server on CentOS 7 with mariaDB. When I come to the point the installation manual requires me to install oflaDemo via browser, I only get an empty list. No connection errors occour. The debug output states:
Host: vstream-dev.my.domain
Trying to connect
Net status: NetConnection.Connect.Success
Got the application list
Got the application list
Got the application list
So, in theory there shouldn't be a problem.
Firewall is down for testing/devel
SELinux is off (permissive)
The only error that ocoured during the installation process was packet mysql-server is not installed. But the manual states that I should use mariaDB on CentOS 7.
I tried to clone https://github.com/Red5/red5-examples and link the ofla Demo folder to /usr/lib/red5/webapps/ with no success.
Ok, I solved it.
What I did:
I cloned the repo with the red5 examples: https://github.com/Red5/red5-examples and navigated into the subfolder oflaDemo (with pom.xml).
Then I had to install maven with
yum install -y maven
and do a maven build
mvn clean install
After that, I was able to grab the file target/red5-example-oflaDemo-2.0.war. I extracted this file into a folder oflaDemo in /var/lib/red5/webapps and restarted the server. Finally, I did mkdir /usr/lib/red5/webapps/oflaDemo/streams to create a folder for the streams.
After that, I was able to navigate to the demo via
http://my.domain:5080/oflaDemo/
I am trying to install rabbitmq. The installation of both erlang i.e OTP 18.1 file was done successfulyl and also rabbitmq installation completed successfully. But when I try to connect rabbitmq, I get the following error:
C:\Program Files (x86)\RabbitMQ Server\rabbitmq_server-3.5.6\sbin>rabbitmq-plugins.bat enable rabbitmq_management
Plugin configuration unchanged.
Applying plugin configuration to rabbit#INLN50899724A... failed.
* Could not contact node rabbit#INLN50899724A.
Changes will take effect at broker restart.
* Options: --online - fail if broker cannot be contacted.
--offline - do not try to contact broker.
C:\Program Files (x86)\RabbitMQ Server\rabbitmq_server-3.5.6\sbin>rabbitmq-server restart
ERROR: epmd error for host INLN50899724A: address (cannot connect to host/port)
Click below to see the image containing error
Error Empd Rabbitmq
I may be replying really late, but still I'm facing this issue. So it may help somebody event while installing rabbitmq version 3.6.5. To change the node name, open "rabbitmq-env.bat" under "installation dir\sbin" and change RABBITMQ_NODENAME to "rabbit#localhost" (line number 90 in rabbitmq 3.6.5). But make sure you remove the windows service, do change the nodename, install service and start it. This worked for me.
No other options worked for me which were marked as right answer in stackoverflow!
Remove the RabbitMQ service. Uninstall RabbitMQ. Kill the epmd.exe process. Delete your c:\users\\AppData\Roaming\RabbitMQ Directory.
Go to Control Panels -> System -> Advanced -> Environment Variables
Add a variable named RABBITMQ_NODENAME and set it to rabbit#localhost
Reinstall RabbitMQ.
Navigate to the RabbitMQ sbin directory (or run the command from the start menu) and run rabbitmqctl status.
You should no longer see the (cannot connect to host/port) error.
And yes, this will fix your Cisco AnyConnect VPN related installation issues.
open C:\Program Files\RabbitMQ Server\rabbitmq_server-3.7.15\sbin\rabbitmq-server.bat
Add the below command as the first line in
set RABBITMQ_NODENAME=rabbit#localhost
refer attached image
For Windows Machine:
Go in C:\Users\<YourUserName>\AppData\Roaming\RabbitMQ
Create a file rabbitmq-env.conf
Add the following:
CONFIG_FILE=C:\Users\<YourUserName>\AppData\Roaming\RabbitMQ\rabbitmq
NODE_IP_ADDRESS=127.0.0.1
NODENAME=rabbit#localhost
The above is my env-config, for this particular issue setting
the nodename will be sufficient.
Turn off you firewall & start the rabbitmq, it will work. After running it one time, even if you turn on the firewall, it will work.
This works for me in Windows 10 machine.
in your shell
$ export RABBITMQ_NODENAME=rabbit#localhost
$ /sbin/rabbitmq-server -detached
change rabbit#INLN50899724A
to rabbit#localhost and try again.
Or, edits your hosts file so that INLN50899724A points to 127.0.0.1
For using rabbit mq on windows 10 for similar error I did below
set RABBITMQ_NODENAME=rabbit#localhost
in the path where rabbit MQ is installed i.e for me it was in C:\Program Files\RabbitMQ Server\rabbitmq_server-3.8.5\sbin>
and then started
.\rabbitmq-server start
Also, I had changed the host to point to my computer name in c:\Windows\System32\Drivers\etc
127.0.0.1 yourhostnamehere