I am trying to connect my RedisInsightsv2 client to a cluster of redis instances.
When the redis instance hasn't joined the cluster yet, redisinsights is able to make a connection.
After the cluster is created however, new connections from the GUI, just fail.
I have 3 shards with 1 replica each:
redis-cli -h 10.9.9.4 -p 7001 --cluster create 10.9.9.4:7001 10.9.9.5:7002 10.9.9.6:7003 10.9.9.4:7004 10.9.9.5:7005 10.9.9.6:7006 --cluster-replicas 1 -a Password
The cluster gets successfully created with the right shards and everything.
I can even verify using the CLUSTER NODES command
root ➜ ~ $ redis-cli -h 10.9.9.4 -p 7004 -a Password
Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.
10.9.9.4:7004> CLUSTER NODES
5b77b776f0ed08b4f34b0fe3e48b609e4bd8400e 10.9.9.6:7003#17003 master - 0 1662318446553 3 connected 10923-16383
a42f44163b046273ca02b1fc99ed93cf6188f65e 10.9.9.5:7002#17002 master - 0 1662318446755 2 connected 5461-10922
d2b21a37b62283a6cfbd5fb436df505ddc31aea8 10.1.1.10:7001#17001 master - 0 1662318445549 1 connected 0-5460
2cd5783411ceea96b4006b596942cc49484884ab 10.9.9.5:7005#17005 slave d2b21a37b62283a6cfbd5fb436df505ddc31aea8 0 1662318445750 1 connected
61541ad0455539335f27d5a90a5a8e504b3dea5f 10.1.1.11:7004#17004 myself,slave 5b77b776f0ed08b4f34b0fe3e48b609e4bd8400e 0 1662318445000 3 connected
c00d264a625998e89becb9334a1f4ea9d2057a0d 10.9.9.6:7006#17006 slave a42f44163b046273ca02b1fc99ed93cf6188f65e 0 1662318445550 2 connected
10.9.9.4:7004>
However, when trying to connect to any of these in the UI I get the following errors:
9/4/2022, 12:03:31 PM | ERROR | TimeoutInterceptor | Request Timeout. GET /api/instance/9e253e74-0091-44b8-bf8c-29ff0f4f0275/connect | {"stack":[{}]}
9/4/2022, 12:03:41 PM | ERROR | TimeoutInterceptor | Request Timeout. GET /api/instance/9e253e74-0091-44b8-bf8c-29ff0f4f0275/connect | {"stack":[{}]}
OR
9/4/2022, 12:16:17 PM | ERROR | KeysBusinessService | Failed to get keys with details info. Connection is closed.. | {"stack":[{}]}
9/4/2022, 12:16:18 PM | ERROR | ExceptionsHandler | Connection is closed. | {"stack":[{}]}
9/4/2022, 12:16:23 PM | ERROR | ExceptionsHandler | Connection is closed. | {"stack":[{}]}
This is the redis.conf that I use for 10.9.9.5:
port 7002
loadmodule /opt/redis-stack/lib/redisearch.so
loadmodule /opt/redis-stack/lib/redisgraph.so
loadmodule /opt/redis-stack/lib/redistimeseries.so
loadmodule /opt/redis-stack/lib/rejson.so
loadmodule /opt/redis-stack/lib/redisbloom.so
cluster-enabled yes
cluster-config-file cluster-node-2.conf
cluster-node-timeout 5000
dbfilename dump-2.rdb
maxmemory 1862mb
maxmemory-policy allkeys-lru
requirepass Password
masterauth Password
I've done a bunch of googling but I'm not able to determine why this is failing. Any help is appreciated!
RedisInsight version: 2.8.0
Running on: Windows 11
Cluster is running on remote machines part of my local network i.e.
10.9.9.0/24
please specify additional information:
what is your OS
what is the version of RedisInsight? (2.8.0?)
where is your cluster running? (is it local? k8s? any SSH tunnels?)
Can you try and see if you are able to connect using this debug build: https://drive.google.com/file/d/1od2uClDKb0649ixkgyRwXfqj8QLr0GXw/view?usp=sharing
Also please check and comment the logs if it is not working
I am trying out okd but it fails for me during the oc cluster up port check step. The debug output is not very verbose to be polite. Do you have an idea what to look for.
$ oc cluster up
Getting a Docker client ...
Checking if image openshift/origin-control-plane:v3.11 is available ...
Checking type of volume mount ...
Determining server IP ...
Checking if OpenShift is already running ...
Checking for supported Docker version (=>1.22) ...
Checking if insecured registry is configured properly in Docker ...
Checking if required ports are available ...
error: a port needed by OpenShift is not available
But the required ports 53 and 8443 are not taken
sudo netstat -tulpn | grep '\(:8443\|:53\)'
At least netstat returns nothing
Versions:
$ oc version
oc v3.11.0+0cbc58b
kubernetes v1.11.0+d4cacc0
features: Basic-Auth GSSAPI Kerberos SPNEGO
and
CentOS Linux release 7.6.1810 (Core)
I have not been able to find out how to turn debugging on so that it is possible to see what it really checks for.
Has the user you are running the command as enough priveledges to open privileged ports (ports <1024) on your host machine?
try running cluster up as root or with sudo
yes I starting whole okd as root user
I am aware of using systemctl status to check a particular status of the service and using systemctl enable to put a service in auto-start when system boot. But how can I list all exisiting auto-start services?
For both system and user unit files :
systemctl list-unit-files | grep enabled && systemctl --user list-unit-files | grep enabled
Using homebrew to install Redis but when I try to ping Redis it shows this error:
Could not connect to Redis at 127.0.0.1:6379: Connection refused
Note :
I tried to turn off firewall and edit conf file but still cannot ping.
I am using macOS Sierra and homebrew version 1.1.11
After installing redis, type from terminal:
redis-server
And Redis-Server will be started
I found this question while trying to figure out why I could not connect to redis after starting it via brew services start redis.
tl;dr
Depending on how fresh your machine or install is you're likely missing a config file or a directory for the redis defaults.
You need a config file at /usr/local/etc/redis.conf. Without this file redis-server will not start. You can copy over the default config file and modify it from there with
cp /usr/local/etc/redis.conf.default /usr/local/etc/redis.conf
You need /usr/local/var/db/redis/ to exist. You can do this easily with
mkdir -p /usr/local/var/db/redis
Finally just restart redis with brew services restart redis.
How do you find this out!?
I wasted a lot of time trying to figure out if redis wasn't using the defaults through homebrew and what port it was on. Services was misleading because even though redis-server had not actually started, brew services list would still show redis as "started." The best approach is to use brew services --verbose start redis which will show you that the log file is at /usr/local/var/log/redis.log. Looking in there I found the smoking gun(s)
Fatal error, can't open config file '/usr/local/etc/redis.conf'
or
Can't chdir to '/usr/local/var/db/redis/': No such file or directory
Thankfully the log made the solution above obvious.
Can't I just run redis-server?
You sure can. It'll just take up a terminal or interrupt your terminal occasionally if you run redis-server &. Also it will put dump.rdb in whatever directory you run it in (pwd). I got annoyed having to remove the file or ignore it in git so I figured I'd let brew do the work with services.
If after install you need to run redis on all time, just type in terminal:
redis-server &
Running redis using upstart on Ubuntu
I've been trying to understand how to setup systems from the ground up on Ubuntu. I just installed redis onto the box and here's how I did it and some things to look out for.
To install:
sudo apt-get install redis-server
That will create a redis user and install the init.d script for it. Since upstart is now the replacement for using init.d, I figure I should convert it to run using upstart.
To disable the default init.d script for redis:
sudo update-rc.d redis-server disable
Then create /etc/init/redis-server.conf with the following script:
description "redis server"
start on runlevel [23]
stop on shutdown
exec sudo -u redis /usr/bin/redis-server /etc/redis/redis.conf
respawn
What this is the script for upstart to know what command to run to start the process. The last line also tells upstart to keep trying to respawn if it dies.
One thing I had to change in /etc/redis/redis.conf is daemonize yes to daemonize no. What happens if you don't change it then redis-server will fork and daemonize itself, and the parent process goes away. When this happens, upstart thinks that the process has died/stopped and you won't have control over the process from within upstart.
Now you can use the following commands to control your redis-server:
sudo start redis-server
sudo restart redis-server
sudo stop redis-server
Hope this was helpful!
redis-server --daemonize yes
I have solved this issue by running this command.
This work for me :
sudo service redis-server start
Date: Dec 2021
There is a couple of reason for this error. I read one article to fix the issue for me. So I just summarize what to check one by one.
1 Check: Redis-Server not Started
redis-server
Also to run Redis in the background, the following command could be used.
redis-server --daemonize yes
2. Check: Firewall Restriction
sudo ufw status (inactive)
sudo ufw active (for making active it might disable ssh when first time active. So enable port 22 to access ssh.)
sudo ufw allow 22
sudo ufw allow 6379
3. Check: Resource usage
ps -aux | grep redis
4. Config setup restriction
sudo vi /etc/redis/redis.conf.
Comment the following line.
# bind 127.0.0.1 ::1
Note: It will be more difficult for malicious actors to make requests or gain access to your server. Make sure you're bound to correct IP address network.
Hope it helps someone. For more information read the following article.
https://bobcares.com/blog/could-not-connect-to-redis-connection-refused/
It's the better way to connect to your redis.
At first, check the ip address of redis server like this.
ps -ef | grep redis
The result is kind of " redis 1184 1 0 .... /usr/bin/redis-server 172.x.x.x:6379
And then you can connect to redis with -h(hostname) option like this.
redis-cli -h 172.x.x.x
Try this :
sudo service redis-server restart
Error connecting Redis on Apple Silicon( Macbook Pro M1 - Dec 2020), you have to just know 2 things:
Run the redis-server using a sudo will remove the server starting error
shell% sudo redis-server
For running it as a service "daemonize" it will allow you to run in the background
shell% sudo redis-server --daemonize yes
Verify using below steps:
shell% redis-cli ping
Hope this helps all Macbook Pro M1 users who are really worried about lack of documentation on this.
I was stuck on this for a long time. After a lot of tries I was able to configure it properly.
There can be different reasons of raising the error. I am trying to provide the reason and the solution to overcome from that situation. Make sure you have installed redis-server properly.
6379 Port is not allowed by ufw firewall.
Solution: type following command sudo ufw allow 6379
The issue can be related to permission of redis user. May be redis user doesn't have permission of modifying necessary redis directories. The redis user should have permissions in the following directories:
/var/lib/redis
/var/log/redis
/run/redis
/etc/redis
To give the owner permission to redis user, type the following commands:
sudo chown -R redis:redis /var/lib/redis
sudo chown -R redis:redis /var/log/redis
sudo chown -R redis:redis /run/redis
sudo chown -R redis:redis /etc/redis.
Now restart redis-server by following command:
sudo systemctl restart redis-server
Hope this will be helpful for somebody.
First you need to up/start the all the redis nodes using below command, one by one for all conf files.
#Note : if you are setting up cluster then you should have 6 nodes, 3 will be master and 3 will be slave.redis-cli will automatically select master and slave out of 6 nodes using --cluster command as shown in my below commands.
[xxxxx#localhost redis-stable]$ redis-server xxxx.conf
then run
[xxxxx#localhost redis-stable]$ redis-cli --cluster create 127.0.0.1:7000 127.0.0.1:7001 127.0.0.1:7002 127.0.0.1:7003 127.0.0.1:7004 127.0.0.1:7005 --cluster-replicas 1
output of above should be like:
>>> Performing hash slots allocation on 6 nodes...
2nd way to set up all things automatically:
you can use utils/create-cluster scripts to set up every thing for you like
starting all nodes, creating cluster
you an follow https://redis.io/topics/cluster-tutorial
Thanks
Actually you need to run "redis-server &" after instalation to start the service, when you only run "redis-server" the service runs in undetached mode. emphasis on "&"
I just had this same problem because I had used improper syntax in my config file. I meant to add:
maxmemory-policy allkeys-lru
to my config file, but instead only added:
allkeys-lru
which evidently prevented Redis from parsing the config file, which in turn prevented me from connecting through the cli. Fixing this syntax allowed me to connect to Redis.
Had that issue with homebrew MacOS the problem was some sort of permission missing on /usr/local/var/log directory see issue here
In order to solve it I deleted the /usr/local/var/log and reinstall redis brew reinstall redis
In my case, it was the password that contained some characters like ', after changing it the server started without problems.
Just like Aaron, in my case brew services list claimed redis was running, but it wasn't. I found the following information in my log file at /usr/local/var/log/redis.log:
4469:C 28 Feb 09:03:56.197 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
4469:C 28 Feb 09:03:56.197 # Redis version=4.0.9, bits=64, commit=00000000, modified=0, pid=4469, just started
4469:C 28 Feb 09:03:56.197 # Configuration loaded
4469:M 28 Feb 09:03:56.198 * Increased maximum number of open files to 10032 (it was originally set to 256).
4469:M 28 Feb 09:03:56.199 # Creating Server TCP listening socket 192.168.161.1:6379: bind: Can't assign requested address
That turns out to be caused by the following configuration:
bind 127.0.0.1 ::1 192.168.161.1
which was necessary to give my VMWare Fusion virtual machine access to the redis server on macOS, the host. However, if the virtual machine wasn't started, this binding failure caused redis not to start up at all. So starting the virtual machine solved the problem.
I was trying to connect my Redis running in wsl2 from vs code running in Windows.
I have listed down what worked for me and the order in which I have performed these actions:
1) sudo ufw allow 6379
2) Update redis.conf to bind 127.0.0.1 ::1 192.168.1.7
3) sudo service redis-server restart
NOTE: This is the first time I have installed Redis on wsl2 and have not run a single command yet.
Let me know if it works for you.
Thanks.
Redis for Mac:
1- brew install redis
2- brew services start redis
3- redis-cli ping
$ brew services start redis
$ brew services stop redis
$ brew services restart redis
Lunch autostart options:
$ ln -sfv /usr/local/opt/redis/*.plist ~/Library/LaunchAgents
# autostart activate
$ launchctl load ~/Library/LaunchAgents/homebrew.mxcl.redis.plist
# autostart deactivate
$ launchctl unload ~/Library/LaunchAgents/homebrew.mxcl.redis.plist
Redis conf default path : /usr/local/etc/redis.conf
In my case, someone had come along and incorrectly edited the redis.conf file to this:
bind 127.0.0.1 ::1
bind 192.168.1.7
when, it really needed to be this (one line):
bind 127.0.0.1 ::1 192.168.1.7
I am using Ubuntu 18.04
I have just enter this command in CMD
sudo systemctl start redis-server
And it is now working. so I thing my redis server was not started that why it showing me the error
Could not connect to Redis at 127.0.0.1:6379: Connection refused.
I have a two server RabbitMQ cluster behind a load balancer, but right now only the first nodes seems to be fielding traffic.
When I do:
> rabbitmqadmin list nodes name type running uptime
+----------------------+------+---------+------------+
| name | type | running | uptime |
+----------------------+------+---------+------------+
| rabbit#n2-rabbitmq-1 | disc | True | 3899164848 |
| rabbit#n2-rabbitmq-2 | disc | True | |
+----------------------+------+---------+------------+
The second node shows no uptime. A cluster_status shows:
> sudo rabbitmqctl cluster_status
Cluster status of node 'rabbit#n2-rabbitmq-1' ...
[{nodes,[{disc,['rabbit#n2-rabbitmq-1','rabbit#n2-rabbitmq-2']}]},
{running_nodes,['rabbit#n2-rabbitmq-2','rabbit#n2-rabbitmq-1']},
{cluster_name,<<"rabbit#n2-rabbitmq-1">>},
{partitions,[]}]
...done.
What am I doing wrong or what should I look for?
Maybe for some reasons, one of your node went down and when it's up again, it does not sync with the 'master' node( which is the one running). To do so, set in the configuration file, /etc/rabbitmq/rabbitmq.config :
{cluster_partition_handling, autoheal}
I recommend that you should be using web management plugin for better observation:
$ rabbitmq-plugins enable rabbitmq_management
From the main (overview) page, you could see the status of your nodes in the cluster(connected, partitioned ...)
Anyway you'd better show your procedure of configuring (every step) your cluster with more information. If my above guess is wrong, please show me some information you get from the web interface.