Execute the startup specification after entering the bin directory
./solr start
report errors
What should I do?
View system limits
ulimit -a
Now you need to change the system limit and log in to the root account
Locate the file/etc/security/limits At the end of conf, add the following two lines [added by default in some systems]
* soft nofile 65535 * hard nofile 65535
Then locate the file/etc/security/limits d/20-nproc.conf
Change 4096 to 65535
Login again and take effect after modification
1. The exception thrown in the code causes Solr not to be closed. The control panel prompts as follows. What should I do?
2. Solution
This is caused by an index error
After closing the Solr service, find the data in the core and delete the two. However, the index will be lost. At this time, you need to import the data again
1. In the Linux system, when installing applications such as elastic search and Solr, the Linux system will prompt various installation failures due to various restrictions. Here are some problems encountered.
2. Various restrictions
1. View all system restrictions
ulimit – A
2. Modify the limit on the number of open files
phenomenon:
***[WARN]***Your open file limit is currently 1024. It should be set to65000 to avoid operational disruption.
Solution:
a) Switch to the root account first (note that the operation is unsuccessful if it is not switched)
b) modify the/etc/security/limits.conf file as root and add
* hard nofile 65000
* soft nofile 65000 at the end
3. Modify the opening process limit
phenomenon:
***[WARN]***Your Max Processes Limit is currently 2048.It should be set to 65000 to avoid operational disruption.
Solution:
a) Switch to the root account first (note that the operation is unsuccessful if it is not switched)
b) modify the/etc/security/limits.conf file as root and add it at the end
* hard nproc 65000
* soft nproc 65000