Logs are essential to troubleshooting your Redis installation. You may ask yourself “Where are my Redis logs?” or “Where does Redis store log files on Ubuntu 14.04?”
With a default apt-get installation on Ubuntu 14.04, Redis log files are located at /var/log/redis/redis-server.log.
To view the last 10 lines:
- sudo tail /var/log/redis/redis-server.log
With a default from-source installation on Ubuntu 14.04, Redis log files are located at /var/log/redis_6379.log.
To view the last 10 lines:
- sudo tail /var/log/redis_6379.log
The DigitalOcean Redis one-click log files are located at /var/log/redis/redis_6379.log.
To view the last 10 lines:
- sudo tail /var/log/redis/redis_6379.log
Checking Archived Log Files
Redis also archives older log files. See a list of the archived logs with:
- ls /var/log/redis
redis-server.log redis-server.log.1.gz
You can gunzip an older file:
sudo gunzip /var/log/redis/redis-server.log.1.gz
Then view its last 10 lines:
sudo tail /var/log/redis/redis-server.log.1
Using find to Search for Logs
If your logs aren’t in either of those locations, you can conduct a more general search using find in the /var/logs directory:
find /var/log/* -name *redis*
Or, search your entire system. This might take a while if you have a lot of files. It will turn up a few permission warnings, which is normal, although we’re avoiding the worst of them in /proc and /sys with the two -prune flags. It will also turn up every file with redis in the name, which includes installation files:
find / -path /sys -prune -o -path /proc -prune -o -name *redis*
Setting the Log Location in redis.conf
The Redis log location is specified in Redis’s configuration file, redis.conf, often located at /etc/redis/redis.conf.
Open that file for editing:
- sudo nano /etc/redis/redis.conf
Locate the logfile line:
logfile /var/log/redis/redis-server.log
Note the location of the log files. You can edit this file path if you want to rename the log file or change its location.
Ubuntu 15.04 and Higher: Checking systemd Logs with journalctl
You may also want to check the logs collected for Redis by systemd. (Ubuntu 15.04 and higher use systemd, although Ubuntu 14.04 defaults to Upstart.) To learn how to use the journalctl command for this purpose, please read this article about journalctl.
Conclusion
If you want to learn more about setting up Redis, please read this article about setting up a Redis cluster.
Thanks for learning with the DigitalOcean Community. Check out our offerings for compute, storage, networking, and managed databases.
About the author
Current fan and former Editorial Manager at DigitalOcean. Hi! Expertise in areas including Ubuntu, Docker, Rails, and more.
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