Redis is an open source, highly-scalable key-value store, commonly referred to as a "NoSQL database."

learn more… | top users | synonyms

0
votes
0answers
2 views

Redis and Postgresql on same machine: vm.overcommit_memory=?

In the Redis documentation it clearly states that vm.overcommit_memory should be set to 1 to ensure background saving newer fails: http://redis.io/topics/faq HOWVER In postgresql documentation it ...
0
votes
0answers
15 views

Redis Sentinel master not downgraded to slave immediately

I have an architecture with three Redis instances (one master and two slaves) and three Sentinel instances. In front of it there is a HaProxy. All works well until the master Redis instance goes down. ...
0
votes
0answers
22 views

How can I monitor the backlog on a Redis pubsub subscription?

As documented in an issue on Google Code, when a Redis pubsub client can't keep up with the rate at which messages are being PUBLISHed to the channel, Redis maintains an ever-growing message backlog ...
0
votes
0answers
25 views

PG, Redis, and Elasticsearch replication for 2 distant metal servers

After years of running a web app on ~15 separate VPS, I'm switching to a single physical server*. App uses 3 DBs: Postgres, Redis, and Elasticsearch, and can update to latest version on all 3. ...
0
votes
0answers
15 views

Redis unable to AUTH to Master

I was trying to do redis replication between two servers, however I got the following information in the redis log [5295] 13 Jan 12:39:30.211 * MASTER <-> SLAVE sync started [5295] 13 Jan ...
0
votes
1answer
56 views

Redis installation “make test” errors

I am getting the following errors when running a "make test" for Redis 2.8 installation on CentOS 6.7: *** [err]: Test replication partial resync: ok psync (diskless: no, reconnect: 1) in ...
0
votes
0answers
25 views

Unable to connect to MASTER: Resource temporarily unavailable : Connecting to MASTER no:0

I'm currently working on simle active stand/by Redis clustering for query caching with Keepalived. The problem I'm facing is when I shutdown&start(restart) the host1 server for testing, it ...
0
votes
0answers
24 views

Redis Windows maxmemory not respected

We made an upgrade from redis 2.8 to 3.0.500 In the past our redis server consumed about 1-2gb of RAM, so we defined a maxmemory of 4gb. I ensured with "config get maxmemory" that anything is ...
0
votes
1answer
10 views

// , Can I change the MASTERAUTH value on a running Redis instance in a Redis Cluster?

// , According to http://redis.io/topics/security, I can set a requirepass value, for example, requirepass foobared, in the Redis configuration files. However, I don't want this in my configuration ...
0
votes
0answers
46 views

Setting up Redis (Windows) Master-Slave Cluster “CLUSTER IS DOWN”

I've two pc's and set up a cluster the way I describe below.- Now when It ry to set a KEY i get "CLUSTERISDOWN" but the console looks like it is running.. Master Config cluster-enabled yes ...
1
vote
0answers
49 views

Redis 3.0.5 on Debian Jessie hangs on shutdown when database not in /var/lib/redis. Any ideas?

I am trying to configure redis 3.0.5 (DotDeb build) on Debian Jessie to dump the database in another directory instead of the default /var/lib/redis. I know how to do this, and in my wheezy server ...
1
vote
1answer
34 views

Limit redis connections when using PhpRedis as session store

We are using PhpRedis as a session handler for PHP sessions. Other than that, we are running a standard Apache/PHP configuration. Since we are using an external Redis-as-a-service provider, we would ...
3
votes
2answers
398 views

Redis: Error moving temp DB file on the final destination: Operation not permitted

I have a nodeBB install which relies on Redis as the data store. Its just a test install at the moment while I iron out any problems. The Redis instance stayed up for a few days but then fell over ...
1
vote
1answer
58 views

Can't touch/connect to a unix socket from the same group

sudo ls -la /var/lib/redis/6379/ produces: drwxrwxr-x 2 redis redis 4096 Nov 28 23:10 . drwx-w---- 3 redis redis 4096 Nov 22 00:10 .. srwxrwx--- 1 redis redis 0 Nov 28 23:10 redis.sock ...
0
votes
1answer
80 views

Connect remotely to ElastiCache - Redis

We are using ElastiCache - Redis for our site, we need to flush the Redis cache and when I try to connect to my ElastiCache - Redis remotely by this command from any PC redis-cli -h ...
0
votes
1answer
28 views

Redis - Master - Master Sync without sharding

I'm currently using redis in a master -slave scenario. In my case i use redis as some kind of CacheBus and I want ot eliminate the single point of failure (if the master server goes down) Is there a ...
0
votes
2answers
232 views

Redis fails to start on OpenSuse Leap 42.1 after upgrade

I decided to upgrade a machine running 13.2 to the latest Leap 42.1. I started the process and it did the upgrade. After the reboot everything is working except for the redis server service. I can't ...
2
votes
0answers
31 views

Correctly Optimizing Redis for memory ussage

I'm a but of a newbie to systems admin & redis configuration and am trying to figure our how to optimize redis. We are running a Magento eCommerce app on an AWS m3.large EC2 instance with redis ...
0
votes
1answer
119 views

Starting Redis as a service on OS X with Homebrew

I installed Redis via brew install redis and attempted to add it as a service via: ln -sfv /usr/local/opt/redis/*.plist ~/Library/LaunchAgents launchctl load ...
1
vote
1answer
545 views

How to run multiple redis instances with systemd

I recently moved to Debian 8 "Jessie" which now use systemd and I can't find a way to run multiple redis instances. I found out there is a /lib/systemd/system/redis-server.service file to start ...
0
votes
1answer
296 views

How to stop celery worker?

I am running celery via redis. I start my worker like this: celery multi start worker1 -A mypackage.tasks.tasks celery multi v3.1.18 (Cipater) > Starting nodes... > ...
2
votes
0answers
239 views

Avoiding swap on ElastiCache Redis

We have been having ongoing trouble with our ElastiCache Redis instance swapping. Amazon seems to have some crude internal monitoring in place which notices swap usage spikes and simply restarts the ...
0
votes
1answer
35 views

How can I start redis on RedHat RHEL 6?

I followed the instructions for installing redis from here. I also ran: make test and all the tests passed. Then: make install and that appears to have worked. I've done all this as root. But ...
0
votes
2answers
2k views

Redis (error) NOAUTH Authentication required

I get the error: (error) NOAUTH Authentication required. When in redis-cli and trying to display the KEYS *. I've only set a requirepass not an auth afaiac. I'm in the redis.conf but do not know ...
1
vote
2answers
389 views

Create a cron job to run redis every 30 minutes if it is not running

I want to create a cron job that will run redis every 30 minutes if it is not already running, but I don't know what I should do. I know that the beginning should look like this */30 * * * */<some ...
1
vote
2answers
205 views

Redis Sentinel Configuration and Hostnames

I have 2 sentineles and 2 redis servers. I want to configure sentinels using hostnames of redis servers. Currently, I define each hostname in hosts file like this. 10.22.20.156 clsupport1 ...
0
votes
0answers
211 views

Redis Multi-Master Replication

Scenario: We have two datacentres which run concurrently (both serve traffic). Each has it's own entire stack of infrastructure, so it can operate without the other being up. That said, we would ...
1
vote
0answers
82 views

Redis parent process smashing disk despite appendfsync = no

We are seeing loads of IO from redis-server despite our save operations being set to occur once every 15 minutes only. The workload is a "full page cache"; we store blobs of compressed HTML. The HTML ...
0
votes
0answers
59 views

Problems with the sessions and HAProxy in OpenShift

I have written an application using Kraken and deploy in OpenShift with the option of auto-scaling (use HAProxy) but this has led me two problems: 1) HAProxy constantly sends requests to the ...
0
votes
1answer
83 views

Redis memory usage impact on performance

While performing health checks of a Redis 2.8.19 setup running on an 30GB Ubuntu Server 14.04 LTS, I noticed that Linux memory usage was split as follows: Used memory : 10GB Cached Memory : 10GB ...
1
vote
1answer
381 views

How can I add rule to iptables on ubuntu to enable redis on local ip but not external

I've followed the various scripts to set up 2 linode machines. Both have an external and local Ip. On one I have installed redis, and I want to connect to this machine via the local ip. Which rules ...
0
votes
1answer
95 views

Trouble while installing redis-server

So for some reason it seems that the installation of the redis-server that was serving the sidekiq on one of my machines got removed (How does that happen?). I assume this because commands like which ...
0
votes
0answers
408 views

redis server does not create socket file

I'm trying to install gitlab on my apache2 server using this tutorial : http://blog.florentlim.com/how-to-install-gitlab-on-debian-7-wheezy-on-apache2-http-server/ Everything seemed to go correctly, ...
0
votes
1answer
249 views

Installing Redis on CentOS 6.6 final - no package available

I've added the "EPEL" repo: Loaded plugins: changelog, downloadonly, fastestmirror, presto Loading mirror speeds from cached hostfile * elrepo: repos.mia.lax-noc.com * epel: epel.gtdinternet.com * ...
8
votes
2answers
754 views

Troubleshooting a Redis Stall

We have several redis instances running on a server. There are also multiple web tier servers connecting to those instance that experience a stall at the same time. We had packet captures going at ...
1
vote
1answer
135 views

resdis bgsave hangs forever on windows

I recently had a data loss due to a non functional bgsave/save (it hang up giving me always the "ERR Background save already in progress" error message) This is my server section of the redis info ...
0
votes
1answer
38 views

What does it mean when a process's cpu utilization seconds does not increase even though the process is clearly running?

On a Ubuntu 12.04 system, I'm running redis. Our monitoring looks at the redis process and grabs cpu utilization out of /proc/pid/stats. Great. For tens of seconds, this number does not increase at ...
1
vote
1answer
323 views

Redis GUI needed for AWS ElastiCache on an EC2 instance

I've a AWS ElastiCache Redis cluster setup that I wish to manage. Since AWS doesn't let you access ElastiCache outside the VPC, I've setup a micro EC2 instance that carried a copy of the phpRedisAdmin ...
1
vote
1answer
130 views

Use in-memory database or search engine for read only to make website faster

I have an application which require doing a lot of queries for every single page which make it slower. I have tried to use cache systems (Redis) but implementation are little bit complicated and will ...
1
vote
0answers
91 views

Setting up a caching system r/w in DCs across continents

We are going to implement a caching system to make our front-end servers which are located in different data centres in Asia, America and Europe can read and write some small JSON data in the shortest ...
1
vote
1answer
25 views

i need redis high availability statistics

does anyone have any real life statistics on how long they can keep a Redis instance up and running for? I know I can get Redis Sentinel to give me fail over functionality but what is should be my ...
1
vote
1answer
129 views

How to config user_prefs (SpamAssassin) individually per user in Redis DB?

I'm going to implement mail gateway with FreeBSD 10.1. So, I installed Postfix, Amavisd, Clamav, Spamassassin, Procmail (for filtering spam from maildir to spam folder), Bayes with Redis database. I ...
0
votes
1answer
36 views

ElasticCache enpoint to use in code

I have provisioned ElasticCache and launched a Redis cache cluster with Enable Replication option selected in Single Availability Zone, now I see three cache nodes under cache cluster as following ...
2
votes
0answers
251 views

Using autossh to port forward redis traffic on an unstable connection

Setup 1 redis master 3 clients redis slaves(for reads) with tunnels to master for writes Each redis instance is a different server in a different location. Requirement Keep a persistent ...
4
votes
1answer
308 views

Redis Sentinel does not take action when the master goes down

I am trying to setup a Redis/Sentinel setup across 3 nodes, each of them running one redis instance and a sentinel instance. However, when the master machine goes down, the remaining sentinels just ...
1
vote
1answer
441 views

Moving a web application to use HAProxy, Varnish, and nginx

I currently have 4 web application servers (running on application) on Rackspace that sit behind a Load Balancer (on Rackspace). In front of the Load Balancer. The application itself makes moderate ...
7
votes
1answer
1k views

upgrading from Redis 2.8.19 to 3.0.1

I currently have installed Redis 2.8.19 but I'm looking to upgrade to the latest stable release 3.0.1. Originally I downloaded, uncompressed, and compiled 2.8.9. What is the recommended approach to ...
1
vote
0answers
109 views

Redis Sentinel false failovers

I'm having problems with Redis. I have 3 servers. Each server have 10 Redises working on different port. Also, each server has one Sentinel instance. Also, there are 5 application servers. Each ...
2
votes
1answer
2k views

Redis high availability and load balancing

I'm using Redis for some time and now we want to move to a redundant cluster which would be fault tolerant, highly available and load balanced. I principally use Redis for some PHP web application ...
0
votes
1answer
125 views

Nagios3 with check_radius.pl and check_redis.pl (conflict?)

Using Nagios3 on Ubuntu 15.04 to monitor a dozen or so CentOS, RHEL and Ubuntu hosts. Everything works just great, including the check_radius.pl plugin (3 hosts). After installing the Redis plugin ...