I tried both ubuntu16.04 and ubuntu18.04 with version 1.8.4 installed on Debian 4.9.144-2 (2019-01-21), and always get below error when start nodeos:

nodeos: /usr/lib/x86_64-linux-gnu/libcrypto.so.1.0.0: version `OPENSSL_1.0.2' not found (required by nodeos)

Anyone can help me to figure the problem?

2 Answers 2


You have to Install OpenSSL first.

sudo apt-get update
sudo apt-get install openssl
  • openssl is already installed, but the version seems not matched
    – Jimmy Guo
    Oct 15, 2019 at 11:35
  • I am working on debian
    – Jimmy Guo
    Oct 15, 2019 at 11:36
sudo apt-get install libssl1.0.2

If your issue is not solved by above command, you had better build openssl by yourself.

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