Common errors of VMware building es8

1. max virtual memory areas vm.max_map_count [65530] is too low, increase to at least

resolvent ： Obviously , You have been prompted that there is too little memory , If the virtual machine is 2G Memory , It's not enough. , I turned it off and set it to 4G, Or this , And then use root The user to change /etc/sysctl.conf

vm.max_map_count=655360

And then when we're done sysctl -p Take effect immediately .

2. max file descriptors [4096] for elasticsearch process is too low

resolvent ： Obviously , The number of files is too small , modify /etc/security/limits.conf, Then switch to normal users ,ulimit -n See if it works , Then it starts normally

* soft nofile 924000
* hard nofile 924000

Start up normal

 

3. Nothing comes out of visiting the page ,curl: (52) Empty reply from server

  resolvent ： Use https visit ,http Access not allowed , I didn't know until I read the log .

Or modify the configuration file elasticsearch.yml, The default is true Of , So you don't have to use https Visited , You don't need certification anymore

xpack.security.enabled: false

Enter the username and password , User name is elastic , If you don't know what the password is , Then you can reset , Normally, it is entered into the log when it is started for the first time , Search for keywords password It should be able to find , I deleted the log several times , I can't see the password , Simply reset .

./elasticsearch-reset-password -u elastic   #bin Under the table of contents 

 

 

 

 

4. Password reset failed ERROR: Failed to determine the health of the cluster

resolvent ： Because I'm asking questions 3 When , Authentication selected false, Change back true, Just reset the password .（ Because of the cancellation of certification , So you don't need users , Certification will fail ）

 

5. visit kibana blank .

resolvent ：kibana function , Port boot , But access is a blank page ,kibana.yml The... Is not enabled in the configuration file “elasticsearch.hosts”, Open notes , restart kibana, Browser access is normal .

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