bug: log-rotate.lua

[saintak]

Issue description

1.log-rotate 每次会操作之前一次的文件，下图为我设置为两分钟一切割，开启压缩的情况。

析
2.用tar做压缩不合适，最好是改成"gzip filename",不仅不需要删除源文件，而且less filename.gz可以直接读取文件内容，方便大数据分
3.如 #5658 所述，开启log-rotate之后，没有log了

Environment

• apisix version (cmd: apisix version):2.11.0

• OS (cmd: uname -a):Linux apisix-test 3.10.0-1160.15.2.el7.x86_64 change: added doc of how to load plugin. #1 SMP Wed Feb 3 15:06:38 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

• OpenResty / Nginx version (cmd: nginx -V or openresty -V):nginx version: openresty/1.19.3.2
  built by gcc 9.3.1 20200408 (Red Hat 9.3.1-2) (GCC)
  built with OpenSSL 1.1.1l 24 Aug 2021
  TLS SNI support enabled
  configure arguments: --prefix=/usr/local/openresty/nginx --with-cc-opt='-O2 -DAPISIX_BASE_VER=1.19.3.2.2 -DNGX_LUA_ABORT_AT_PANIC -I/usr/local/openresty/zlib/include -I/usr/local/openresty/pcre/include -I/usr/local/openresty/openssl111/include' --add-module=../ngx_devel_kit-0.3.1 --add-module=../echo-nginx-module-0.62 --add-module=../xss-nginx-module-0.06 --add-module=../ngx_coolkit-0.2 --add-module=../set-misc-nginx-module-0.32 --add-module=../form-input-nginx-module-0.12 --add-module=../encrypted-session-nginx-module-0.08 --add-module=../srcache-nginx-module-0.32 --add-module=../ngx_lua-0.10.19 --add-module=../ngx_lua_upstream-0.07 --add-module=../headers-more-nginx-module-0.33 --add-module=../array-var-nginx-module-0.05 --add-module=../memc-nginx-module-0.19 --add-module=../redis2-nginx-module-0.15 --add-module=../redis-nginx-module-0.3.7 --add-module=../ngx_stream_lua-0.0.9 --with-ld-opt='-Wl,-rpath,/usr/local/openresty/luajit/lib -Wl,-rpath,/usr/local/openresty/wasmtime-c-api/lib -L/usr/local/openresty/zlib/lib -L/usr/local/openresty/pcre/lib -L/usr/local/openresty/openssl111/lib -Wl,-rpath,/usr/local/openresty/zlib/lib:/usr/local/openresty/pcre/lib:/usr/local/openresty/openssl111/lib' --add-module=/tmp/tmp.wRcqhSzQQC/openresty-1.19.3.2/../mod_dubbo --add-module=/tmp/tmp.wRcqhSzQQC/openresty-1.19.3.2/../ngx_multi_upstream_module --add-module=/tmp/tmp.wRcqhSzQQC/openresty-1.19.3.2/../apisix-nginx-module --add-module=/tmp/tmp.wRcqhSzQQC/openresty-1.19.3.2/../wasm-nginx-module --add-module=/tmp/tmp.wRcqhSzQQC/openresty-1.19.3.2/../lua-var-nginx-module --with-poll_module --with-pcre-jit --with-stream --with-stream_ssl_module --with-stream_ssl_preread_module --with-http_v2_module --without-mail_pop3_module --without-mail_imap_module --without-mail_smtp_module --with-http_stub_status_module --with-http_realip_module --with-http_addition_module --with-http_auth_request_module --with-http_secure_link_module --with-http_random_index_module --with-http_gzip_static_module --with-http_sub_module --with-http_dav_module --with-http_flv_module --with-http_mp4_module --with-http_gunzip_module --with-threads --with-compat --with-stream --with-http_ssl_module

• etcd version, if have (cmd: run curl http://127.0.0.1:9090/v1/server_info to get the info from server-info API):

• apisix-dashboard version, if have:

• the plugin runner version, if the issue is about a plugin runner (cmd: depended on the kind of runner):

• luarocks version, if the issue is about installation (cmd: luarocks --version):/usr/bin/luarocks 2.3.0
  LuaRocks main command-line interface

Steps to reproduce

plugins:
# the plugins you enabled
- log-rotate
#
plugin_attr:
log-rotate:
interval: 120 # rotate interval (unit: second)
max_kept: 6 # max number of log files will be kept
enable_compression: true # enable log file compression(gzip) or not, default false

Actual result

1.可能会造成日志丢失
2.tar.gz不方便进一步进行大数据运算

Error log

null

Expected result

1.修复压缩的bug
2.最好将tar改为gzip

[besich]

you can try disable compression option, i think it can solve the problem of lost logs.
I will verify whether it is caused by compression. If so, I want to try to repair it

[saintak]

#5658 是相同的问题，等待修复中。