How to setup logarithmic axis for line chart in rails chartkick?

Is there way to setup log axis using chartkick and default chart.js library?

Yes, you can pass the axis options using 'library' option like this:

<%= line_chart data, {
    library: {
        legend: {
            position: 'bottom',
        },
        scales: {
            yAxes: [
                {
                    id: 'y-axis',
                      type: 'logarithmic'
                },]
        }
    }
} %>

For more options please consult with chart.js docs.