Why geth switch to full node when starting

I start my geth with –syncmode “fast” but I get this warning: WARN [01-21|14:47:59.148] Switch sync mode from fast sync to full sync And my geth will start with full sync mode with this warning. Any solution for this? OS version: CentOS Linux 7 Full command: $ go-ethereum/build/bin/geth –syncmode “fast” –rpc –rpcapi db,eth,net,web3 –cache=16384 –rpcport…

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Can not change Mysql Server 8 root password Kubuntu 19.10

I have a fresh installation of Kubuntu 19.10 and Mysql Server 8.0.18-0ubuntu0.19.10.1 I tried to start mysql with command below: sudo mysqld –init-file=/home/da/dainit & I’ve an init file under /home/da/dainit contains and tried varied of choices like ALTER USER ‘root’@’localhost’ IDENTIFIED BY ‘abc’; or UPDATE mysql.user SET authentication_string = PASSWORD(‘[email protected]’) WHERE User = ‘root’ AND…

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Instal using apt-get always fails with ‘ … no installation candidate’ 16.10

New to Ubuntu – got 16.10 installed. Trying for days to install many packages like kdesudo gksu p7zip synaptic software-center etc. … all fail with message “Package is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source…

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